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    Wildfire aerosol deposition likely amplified a summertime Arctic phytoplankton bloom

    Li, F. et al. Historical (1700–2012) global multi-model estimates of the fire emissions from the Fire Modeling Intercomparison Project (FireMIP). Atmos. Chem. Phys. 19, 12545–12567 (2019).CAS 
    Article 

    Google Scholar 
    Ward, D. S. et al. The changing radiative forcing of fires: Global model estimates for past, present and future. Atmos. Chem. Phys. 12, 10857–10886 (2012).CAS 
    Article 

    Google Scholar 
    Andela, N. et al. A human-driven decline in global burned area. Science 356, 1356–1362 (2017).CAS 
    Article 

    Google Scholar 
    McCarty, J. L. et al. Reviews and syntheses: Arctic fire regimes and emissions in the 21st century. Biogeosciences 18, 5053–5083 (2021).CAS 
    Article 

    Google Scholar 
    Kim, J.-S., Kug, J.-S., Jeong, S.-J., Park, H. & Schaepman-Strub, G. Extensive fires in southeastern Siberian permafrost linked to preceding Arctic Oscillation. Sci. Adv. 6, eaax3308 (2020).Article 

    Google Scholar 
    Mahowald, N. et al. Global distribution of atmospheric phosphorus sources, concentrations and deposition rates, and anthropogenic impacts. Global Biogeochem. Cy. https://doi.org/10.1029/2008gb003240 (2008).Barkley, A. E. et al. African biomass burning is a substantial source of phosphorus deposition to the Amazon, Tropical Atlantic Ocean, and Southern Ocean. Proc. Natl. Acad. Sci. USA 116, 16216–16221 (2019).CAS 
    Article 

    Google Scholar 
    Andreae, M. O. Emission of trace gases and aerosols from biomass burning—an updated assessment. Atmos. Chem. Phys. 19, 8523–8546 (2019).CAS 
    Article 

    Google Scholar 
    Guieu, C., Bonnet, S., Wagener, T. & Loÿe-Pilot, M.-D. Biomass burning as a source of dissolved iron to the open ocean? Geophys. Res. Lett. https://doi.org/10.1029/2005gl022962 (2005).Hamilton, D. S. et al. Improved methodologies for Earth system modelling of atmospheric soluble iron and observation comparisons using the Mechanism of Intermediate complexity for Modelling Iron (MIMI v1.0). Geosci. Model Dev. 12, 3835–3862 (2019).CAS 
    Article 

    Google Scholar 
    Kharol, S. K. et al. Dry deposition of reactive nitrogen from satellite observations of ammonia and nitrogen dioxide over North America. Geophys. Res. Lett. 45, 1157–1166 (2018).CAS 
    Article 

    Google Scholar 
    Wentworth, G. R. et al. Ammonia in the summertime Arctic marine boundary layer: Sources, sinks, and implications. Atmos. Chem. Phys. 16, 1937–1953 (2016).CAS 
    Article 

    Google Scholar 
    Pellegrini, A. F. A. et al. Fire frequency drives decadal changes in soil carbon and nitrogen and ecosystem productivity. Nature 553, 194–198 (2018).CAS 
    Article 

    Google Scholar 
    Mahowald, N. M. et al. Aerosol deposition impacts on land and ocean carbon cycles. Curr. Clim. Change Rep. 3, 16–31 (2017).Article 

    Google Scholar 
    van der Werf, G. R. et al. Global fire emissions estimates during 1997–2016. Earth Syst. Sci. Data 9, 697–720 (2017).Article 

    Google Scholar 
    Evangeliou, N. et al. Open fires in Greenland in summer 2017: Transport, deposition and radiative effects of BC, OC, and BrC emissions. Atmos. Chem. Phys. 19, 1393–1411 (2019).CAS 
    Article 

    Google Scholar 
    Hamilton, D. S. et al. Earth, wind, fire, and pollution: Aerosol nutrient sources and impacts on ocean biogeochemistry. Annu. Rev. Mar. Sci. 14, 303–330 (2022).Article 

    Google Scholar 
    Soja, A. J., Shugart, H. H., Sukhinin, A., Conard, S. & Stackhouse, P. W. Satellite-derived mean fire return intervals as indicators of change in Siberia (1995–2002). Mitig. Adapt. Strateg. Glob. Chang. 11, 75–96 (2006).Article 

    Google Scholar 
    Ito, A. Mega fire emissions in Siberia: Potential supply of bioavailable iron from forests to the ocean. Biogeosciences 8, 1679–1697 (2011).CAS 
    Article 

    Google Scholar 
    Myriokefalitakis, S., Gröger, M., Hieronymus, J. & Döscher, R. An explicit estimate of the atmospheric nutrient impact on global oceanic productivity. Ocean Sci. 16, 1183–1205 (2020).CAS 
    Article 

    Google Scholar 
    Harrison, W. G. & Cota, G. F. Primary production in polar waters: Relation to nutrient availability. Polar Res. 10, 87–104 (1991).Article 

    Google Scholar 
    Tremblay, J.-É. et al. Global and regional drivers of nutrient supply, primary production and CO2 drawdown in the changing Arctic Ocean. Prog. Oceanogr. 139, 171–196 (2015).Article 

    Google Scholar 
    Ardyna, M., Gosselin, M., Michel, C., Poulin, M. & Tremblay, J.-É. Environmental forcing of phytoplankton community structure and function in the Canadian High Arctic: contrasting oligotrophic and eutrophic regions. Mar. Ecol. Prog. Ser. 442, 37–57 (2011).CAS 
    Article 

    Google Scholar 
    Rainville, L. & Woodgate, R. A. Observations of internal wave generation in the seasonally ice-free Arctic. Geophys. Res. Lett. 36, L23604 (2009).Article 

    Google Scholar 
    Ardyna, M. et al. Recent Arctic Ocean sea-ice loss triggers novel fall phytoplankton blooms. Geophys. Res. Lett. 41, 6207–6212 (2014).Article 

    Google Scholar 
    Baumann, T. M. et al. On the seasonal cycles observed at the continental slope of the Eastern Eurasian Basin of the Arctic Ocean. J. Phys. Oceanogr. 48, 1451–1470 (2018).Article 

    Google Scholar 
    Bauch, D. & Cherniavskaia, E. Water mass classification on a highly variable Arctic shelf region: Origin of Laptev sea water masses and implications for the nutrient budget. J. Geophys. Res. Oceans 123, 1896–1906 (2018).Article 

    Google Scholar 
    Pnyushkov, A. V. et al. Heat, salt, and volume transports in the eastern Eurasian Basin of the Arctic Ocean from 2 years of mooring observations. Ocean Sci. 14, 1349–1371 (2018).Article 

    Google Scholar 
    Hölemann, J. A. et al. The impact of land-fast ice on the distribution of terrestrial dissolved organic matter in the Siberian Arctic shelf seas. Biogeosci. Discuss 2021, 1–30 (2021).
    Google Scholar 
    Polyakov, I. V. et al. Greater role for Atlantic inflows on sea-ice loss in the Eurasian Basin of the Arctic Ocean. Science 356, 285–291 (2017).CAS 
    Article 

    Google Scholar 
    Lutsch, E. et al. Unprecedented atmospheric ammonia concentrations detected in the high Arctic from the 2017 Canadian wildfires. J. Geophys. Res. Atmos. 124, 8178–8202 (2019).CAS 
    Article 

    Google Scholar 
    Zhang, J., Li, D., Bian, J. & Bai, Z. Deep stratospheric intrusion and Russian wildfire induce enhanced tropospheric ozone pollution over the northern Tibetan Plateau. Atmos. Res. 259, 105662 (2021).CAS 
    Article 

    Google Scholar 
    Hurrell, J. W. et al. The Community Earth System Model: A framework for collaborative research. Bull. Amer. Meteor. Soc. 94, 1339–1360 (2013).Article 

    Google Scholar 
    Clark, S. K., Ward, D. S. & Mahowald, N. M. The sensitivity of global climate to the episodicity of fire aerosol emissions. J. Geophys. Res.: Atmos. 120, 11,589–511,607 (2015).CAS 
    Article 

    Google Scholar 
    Shi, J.-H. et al. Examination of causative link between a spring bloom and dry/wet deposition of Asian dust in the Yellow Sea, China. J. Geophys. Res. Atmos. https://doi.org/10.1029/2012JD017983 (2012).Wiedinmyer, C. et al. The Fire INventory from NCAR (FINN): A high resolution global model to estimate the emissions from open burning. Geosci. Model Dev. 4, 625–641 (2011).Article 

    Google Scholar 
    Eckhardt, S. et al. Current model capabilities for simulating black carbon and sulfate concentrations in the Arctic atmosphere: a multi-model evaluation using a comprehensive measurement data set. Atmos. Chem. Phys. 15, 9413–9433 (2015).CAS 
    Article 

    Google Scholar 
    Hamilton, D. S. et al. Impact of changes to the atmospheric soluble iron deposition flux on ocean biogeochemical cycles in the anthropocene. Glob. Biogeochem. Cycle 34, e2019GB006448 (2020).CAS 
    Article 

    Google Scholar 
    Kramer, S. J., Bisson, K. M. & Fischer, A. D. Observations of phytoplankton community composition in the Santa Barbara channel during the Thomas fire. J. Geophys. Res. Oceans 125, e2020JC016851 (2020).Article 

    Google Scholar 
    Kim, Y., Hatsushika, H., Muskett, R. R. & Yamazaki, K. Possible effect of boreal wildfire soot on Arctic sea ice and Alaska glaciers. Atmos. Environ. 39, 3513–3520 (2005).CAS 
    Article 

    Google Scholar 
    Knapp, P. A. & Soulé, P. T. Spatio-temporal linkages between declining Arctic sea-ice extent and increasing wildfire activity in the Western United States. Forests 8, 313 (2017).Article 

    Google Scholar 
    Horvat, C. et al. The frequency and extent of sub-ice phytoplankton blooms in the Arctic Ocean. Sci. Adv. https://doi.org/10.1126/sciadv.1601191 (2017).Ardyna, M. et al. Under-ice phytoplankton blooms: Shedding light on the “invisible” part of arctic primary production. Front. Mar. Sci. https://doi.org/10.3389/fmars.2020.608032 (2020).Altieri, K. E., Fawcett, S. E. & Hastings, M. G. Reactive nitrogen cycling in the atmosphere and ocean. Annu. Rev. Earth Planet. Sci. https://doi.org/10.1146/annurev-earth-083120-052147 (2021).Baker, A. R. & Jickells, T. D. Atmospheric deposition of soluble trace elements along the Atlantic Meridional Transect (AMT). Prog. Oceanogr. 158, 41–51 (2017).Article 

    Google Scholar 
    Hugelius, G. et al. Large stocks of peatland carbon and nitrogen are vulnerable to permafrost thaw. Proc. Natl. Acad. Sci. USA 117, 20438–20446 (2020).CAS 
    Article 

    Google Scholar 
    Schmale, J. et al. Pan-Arctic seasonal cycles and long-term trends of aerosol properties from 10 observatories. Atmos. Chem. Phys. 22, 3067–3096 (2022).CAS 
    Article 

    Google Scholar 
    Lewis, K. M., van Dijken, G. L. & Arrigo, K. R. Changes in phytoplankton concentration now drive increased Arctic Ocean primary production. Science 369, 198–202 (2020).CAS 
    Article 

    Google Scholar 
    Ardyna, M. & Arrigo, K. R. Phytoplankton dynamics in a changing Arctic Ocean. Nat. Clim. Change 10, 892–903 (2020).CAS 
    Article 

    Google Scholar 
    Tang, W. et al. Widespread phytoplankton blooms triggered by 2019–2020 Australian wildfires. Nature 597, 370–375 (2021).CAS 
    Article 

    Google Scholar 
    Fossheim, M. et al. Recent warming leads to a rapid borealization of fish communities in the Arctic. Nat. Clim. Change 5, 673–677 (2015).Article 

    Google Scholar 
    Sathyendranath, S. et al. An ocean-colour time series for use in climate studies: The experience of the Ocean-colour Climate Change Initiative (OC-CCI). Sensors 19, 4285 (2019).CAS 
    Article 

    Google Scholar 
    Gordon, H. R. & Wang, M. Retrieval of water-leaving radiance and aerosol optical thickness over the oceans with SeaWiFS: A preliminary algorithm. Appl. Opt. 33, 443–452 (1994).CAS 
    Article 

    Google Scholar 
    Werdell, P. J. & Bailey, S. W. An improved in-situ bio-optical data set for ocean color algorithm development and satellite data product validation. Remote Sens. Environ. 98, 122–140 (2005).Article 

    Google Scholar 
    Hu, C., Lee, Z. & Franz, B. Chlorophyll a algorithms for oligotrophic oceans: A novel approach based on three-band reflectance difference. J. Geophys. Res. Oceans https://doi.org/10.1029/2011JC007395 (2012).Tilmes, S. et al. Description and evaluation of tropospheric chemistry and aerosols in the Community Earth System Model (CESM1.2). Geosci. Model Dev. 8, 1395–1426 (2015).Article 

    Google Scholar 
    Bernstein, D. et al. Short-term impacts of 2017 western North American wildfires on meteorology, the atmosphere’s energy budget, and premature mortality. Environ. Res. Lett. 16, 064065 (2021).Article 

    Google Scholar 
    Liu, X. et al. Description and evaluation of a new four-mode version of the Modal Aerosol Module (MAM4) within version 5.3 of the Community Atmosphere Model. Geosci. Model Dev. 9, 505–522 (2016).CAS 
    Article 

    Google Scholar 
    Suarez, M. J. et al. The GEOS-5 Data Assimilation System – Documentation of Versions 5.0.1, 5.1.0, and 5.2.0. No. NASA/TM-2008-104606-VOL-27 (2008).Janssens-Maenhout, G. et al. HTAP_v2.2: A mosaic of regional and global emission grid maps for 2008 and 2010 to study hemispheric transport of air pollution. Atmos. Chem. Phys. 15, 11411–11432 (2015).CAS 
    Article 

    Google Scholar 
    Dentener, F. et al. Emissions of primary aerosol and precursor gases in the years 2000 and 1750 prescribed data-sets for AeroCom. Atmos. Chem. Phys. 6, 4321–4344 (2006).CAS 
    Article 

    Google Scholar 
    Inness, A. et al. The CAMS reanalysis of atmospheric composition. Atmos. Chem. Phys. 19, 3515–3556 (2019).CAS 
    Article 

    Google Scholar 
    Stein, A. F. et al. NOAA’s HYSPLIT atmospheric transport and dispersion modeling system. Bull. Am. Meteorol. Soc. 96, 2059–2077 (2015).Article 

    Google Scholar 
    Carter, T. S. et al. How emissions uncertainty influences the distribution and radiative impacts of smoke from fires in North America. Atmos. Chem. Phys. 20, 2073–2097 (2020).CAS 
    Article 

    Google Scholar 
    Pan, X. et al. Six global biomass burning emission datasets: Intercomparison and application in one global aerosol model. Atmos. Chem. Phys. 20, 969–994 (2020).CAS 
    Article 

    Google Scholar 
    Reddington, C. L. et al. Analysis of particulate emissions from tropical biomass burning using a global aerosol model and long-term surface observations. Atmos. Chem. Phys. 16, 11083–11106 (2016).CAS 
    Article 

    Google Scholar 
    Kiely, L. et al. New estimate of particulate emissions from Indonesian peat fires in 2015. Atmos. Chem. Phys. 19, 11105–11121 (2019).CAS 
    Article 

    Google Scholar 
    Giglio, L., Boschetti, L., Roy, D. P., Humber, M. L. & Justice, C. O. The Collection 6 MODIS burned area mapping algorithm and product. Remote Sens. Environ. 217, 72–85 (2018).Arrigo, K. R. et al. Phytoplankton blooms beneath the sea ice in the Chukchi Sea. Deep Sea Res. Pt. 2 105, 1–16 (2014).Article 

    Google Scholar 
    Geider, R. J., Maclntyre, H. L. & Kana, T. M. A dynamic regulatory model of phytoplanktonic acclimation to light, nutrients, and temperature. Limnol. Oceanogr. 43, 679–694 (1998).CAS 
    Article 

    Google Scholar 
    Liefer, J. D., Garg, A., Campbell, D. A., Irwin, A. J. & Finkel, Z. V. Nitrogen starvation induces distinct photosynthetic responses and recovery dynamics in diatoms and prasinophytes. PLoS One 13, e0195705 (2018).Article 
    CAS 

    Google Scholar  More

  • in

    Selection, drift and community interactions shape microbial biogeographic patterns in the Pacific Ocean

    Nelson G. From Candolle to croizat: comments on the history of biogeography. J Hist Biol. 1978;11:269–305.PubMed 
    Article 
    CAS 

    Google Scholar 
    Lomolino MV, Riddle BR, Whittaker RJ, Brown JH. Biogeography. Sunderland, MA: Sinauer Associates; 2005. p. 752Wang J, Soininen J, Zhang Y, Wang B, Yang X, Shen J. Contrasting patterns in elevational diversity between microorganisms and macroorganisms. J Biogeogr. 2011;38:595–603.Article 

    Google Scholar 
    Treseder KK, Maltz MR, Hawkins BA, Fierer N, Stajich JE, Mcguire KL. Evolutionary histories of soil fungi are reflected in their large-scale biogeography. Ecol Lett. 2014;17:1086–93.PubMed 
    Article 

    Google Scholar 
    Meyer KM, Memiaghe H, Korte L, Kenfack D, Alonso A, Bohannan BJM. Why do microbes exhibit weak biogeographic patterns? ISME J. 2018;12:1404–13.PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Lindström ES, Langenheder S. Local and regional factors influencing bacterial community assembly. Environ Microbiol Rep. 2012;4:1–9.PubMed 
    Article 

    Google Scholar 
    Ghiglione JF, Galand PE, Pommier T, Pedrós-Alió C, Maas EW, Bakker K, et al. Pole-to-pole biogeography of surface and deep marine bacterial communities. Proc Natl Acad Sci USA 2012;109:17633–8.PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Sul WJ, Oliver TA, Ducklow HW, Amaral-Zettlera LA, Sogin ML. Marine bacteria exhibit a bipolar distribution. Proc Natl Acad Sci USA 2013;110:2342–7.PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Sunagawa S, Coelho LP, Chaffron S, Kultima JR, Labadie K, Salazar G, et al. Structure and function of the global ocean microbiome. Science. 2015;348:1261359.PubMed 
    Article 
    CAS 

    Google Scholar 
    de Vargas C, Audic S, Henry N, Decelle J, Mahé F, Logares R, et al. Eukaryotic plankton diversity in the sunlit ocean. Science. 2015;348:1261605.PubMed 
    Article 
    CAS 

    Google Scholar 
    Milici M, Tomasch J, Wos-Oxley ML, Decelle J, Jáuregui R, Wang H. et al. Bacterioplankton biogeography of the Atlantic ocean: a case study of the distance-decay relationship. Front Microbiol. 2016;7:Article 590.PubMed 

    Google Scholar 
    Raes EJ, Bodrossy L, Van De Kamp J, Bissett A, Ostrowski M, Brown MV, et al. Oceanographic boundaries constrain microbial diversity gradients in the south pacific ocean. Proc Natl Acad Sci USA 2018;115:8266–75.Article 
    CAS 

    Google Scholar 
    Wu W, Lu HP, Sastri A, Yeh YC, Gong GC, Chou WC, et al. Contrasting the relative importance of species sorting and dispersal limitation in shaping marine bacterial versus protist communities. ISME J. 2018;12:485–94.PubMed 
    Article 

    Google Scholar 
    Vellend M. Conceptual synthesis in community ecology. Q Rev Biol. 2010;85:183–206.PubMed 
    Article 

    Google Scholar 
    Hanson CA, Fuhrman JA, Horner-Devine MC, Martiny JBH. Beyond biogeographic patterns: Processes shaping the microbial landscape. Nat Rev Microbiol. 2012;10:497–506.PubMed 
    Article 
    CAS 

    Google Scholar 
    Nemergut DR, Schmidt SK, Fukami T, O’Neill SP, Bilinski TM, Stanish LF, et al. Patterns and processes of microbial community assembly. Microbiol Mol Biol Rev. 2013;77:342–56.PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Stegen JC, Lin X, Fredrickson JK, Chen X, Kennedy DW, Murray CJ, et al. Quantifying community assembly processes and identifying features that impose them. ISME J. 2013;7:2069–79.PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Schmidt TSB, Matias Rodrigues JF, Von Mering C. A family of interaction-adjusted indices of community similarity. ISME J. 2017;11:791–807.PubMed 
    Article 

    Google Scholar 
    Zhou J, Ning D. Stochastic community assembly: does it matter in microbial ecology? Microbiol Mol Biol Rev. 2017;81:1–32.Article 

    Google Scholar 
    Djurhuus A, Port J, Closek CJ, Yamahara KM, Romero-maraccini O, Walz KR. et al. Evaluation of filtration and DNA extraction methods for environmental DNA biodiversity assessments across multiple trophic levels. Front Mar Sci. 2017;4:Article 314.Article 

    Google Scholar 
    Wang ZB, Sun YY, Li Y, Chen XL, Wang P, Ding HT, et al. Significant bacterial distance-decay relationship in continuous, well-connected southern ocean surface water. Micro Ecol. 2020;80:73–80.Article 
    CAS 

    Google Scholar 
    Dlugosch L, Pohlein A, Wemheuer B, Pfeiffer B, Badewien T, Daniel R, et al. Significance of gene variants for the functional biogeography of the near-surface Atlantic Ocean microbiome. Nat Commun. 2022;13:456.PubMed 
    PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Lozupone C, Knight R. UniFrac: A new phylogenetic method for comparing microbial communities. Appl Environ Microbiol. 2005;71:8228–35.PubMed 
    PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Logares R, Deutschmann IM, Junger PC, Giner CR, Krabberød AK, Schmidt TSB, et al. Disentangling the mechanisms shaping the surface ocean microbiota. Microbiome. 2020;8:55.PubMed 
    PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Doblin MA, Petrou K, Sinutok S, Seymour JR, Messer LF, Brown MV, et al. Nutrient uplift in a cyclonic eddy increases diversity, primary productivity and iron demand of microbial communities relative to a western boundary current. PeerJ. 2016;4:e1973.PubMed 
    PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Polovina JJ, Howell E, Kobayashi DR, Seki MP. The transition zone chlorophyll front, a dynamic global feature defining migration and forage habitat for marine resources. Prog Oceanogr. 2001;49:469–83.Article 

    Google Scholar 
    Karl DM, Church MJ. Ecosystem structure and dynamics in the north pacific subtropical gyre: new views of an old ocean. Ecosystems. 2017;20:433–57.Article 

    Google Scholar 
    Mestre M, Ruiz-González C, Logares R, Duarte CM, Gasol JM, Sala MM. Sinking particles promote vertical connectivity in the ocean microbiome. Proc Natl Acad Sci USA 2018;115:6799–807.Article 
    CAS 

    Google Scholar 
    Balmonte JP, Simon M, Giebel HA, Arnosti C. A sea change in microbial enzymes: Heterogeneous latitudinal and depth-related gradients in bulk water and particle-associated enzymatic activities from 30°S to 59°N in the Pacific Ocean. Limnol Oceanogr. 2021;66:3489–507.Article 
    CAS 

    Google Scholar 
    Giebel H-A, Arnosti C, Badewien TH, Bakenhus I, Balmonte JP, Billerbeck S. et al. Microbial growth and organic matter cycling in the Pacific Ocean along a latitudinal transect between subarctic and subantarctic waters. Front Mar Sci. 2021;8:Article 764383.Article 

    Google Scholar 
    Milici M, Tomasch J, Wos-Oxley ML, Wang H, Jáuregui R, Camarinha-Silva A, et al. Low diversity of planktonic bacteria in the tropical ocean. Sci Rep. 2016;6:19054.PubMed 
    PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Longhurst AR. Ecological geography of the sea. San Diego, USA: Academic Press; 2007.Parada AE, Needham DM, Fuhrman JA. Every base matters: Assessing small subunit rRNA primers for marine microbiomes with mock communities, time series and global field samples. Environ Microbiol. 2016;18:1403–14.PubMed 
    Article 
    CAS 

    Google Scholar 
    Milke F, Sanchez-Garcia S, Dlugosch L, McNichol J, Fuhrman J, Simon M. et al. Composition and biogeography of pro- and eukaryotic communities in the Atlantic Ocean: primer choice matters. Front Microbiol. 2022;13:Article 895875.PubMed 
    Article 

    Google Scholar 
    Vaulot D, Geisen S, Mahé F, Bass D. pr2-primers: An 18S rRNA primer database for protists. Mol Ecol Resour. 2022;22:168–79.PubMed 
    Article 
    CAS 

    Google Scholar 
    Yeh YC, McNichol J, Needham DM, Fichot EB, Berdjeb L, Fuhrman JA. Comprehensive single-PCR 16S and 18S rRNA community analysis validated with mock communities, and estimation of sequencing bias against 18S. Environ Microbiol. 2021;23:3240–50.PubMed 
    Article 
    CAS 

    Google Scholar 
    Quast C, Pruesse E, Yilmaz P, Gerken J, Schweer T, Yarza P, et al. The SILVA ribosomal RNA gene database project: Improved data processing and web-based tools. Nucleic Acids Res. 2013;41:590–6.Article 
    CAS 

    Google Scholar 
    Guillou L, Bachar D, Audic S, Bass D, Berney C, Bittner L, et al. The Protist Ribosomal Reference database (PR2): a catalog of unicellular eukaryote Small Sub-Unit rRNA sequences with curated taxonomy. Nucleic Acids Res. 2013;41:597–604.Article 
    CAS 

    Google Scholar 
    Bolyen E, Rideout JR, Dillon MR, Bokulich NA, Abnet CC, Al-Ghalith GA, et al. Reproducible, interactive, scalable and extensible microbiome data science using QIIME 2 (Nature Biotechnology, (2019), 37, 8, (852-857), 10.1038/s41587-019-0209-9). Nat Biotechnol. 2019;37:1091.PubMed 
    Article 
    CAS 

    Google Scholar 
    Callahan BJ, McMurdie PJ, Rosen MJ, Han AW, Johnson AJA, Holmes SP. DADA2: High-resolution sample inference from Illumina amplicon data. Nat Methods. 2016;13:581–3.PubMed 
    PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Friedman J, Alm EJ. Inferring correlation networks from genomic survey data. PLoS Comput Biol. 2012;8:e1002687.PubMed 
    PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Bodenhofer U, Bonatesta E, Horejš-Kainrath C, Hochreiter S. Msa: an R package for multiple sequence alignment. Bioinformatics. 2015;31:3997–9.PubMed 
    CAS 

    Google Scholar 
    Kaufman L, Rousseeuw PJ. Finding groups in data: an introduction to cluster analysis. Hoboken NJ, USA: John Wiley & Sons; 2009.Pruesse E, Peplies J, Glöckner FO. SINA: Accurate high-throughput multiple sequence alignment of ribosomal RNA genes. Bioinformatics. 2012;28:1823–9.PubMed 
    PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Price MN, Dehal PS, Arkin AP. FastTree 2 – approximately maximum-likelihood trees for large alignments. PLoS ONE. 2010;5:e9490.PubMed 
    PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Losos JB. Phylogenetic niche conservatism, phylogenetic signal and the relationship between phylogenetic relatedness and ecological similarity among species. Ecol Lett. 2008;11:995–1003.PubMed 
    Article 

    Google Scholar 
    Stegen JC, Lin X, Konopka AE, Fredrickson JK. Stochastic and deterministic assembly processes in subsurface microbial communities. ISME J. 2012;6:1653–64.PubMed 
    PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Fine PVA, Kembel SW. Phylogenetic community structure and phylogenetic turnover across space and edaphic gradients in western Amazonian tree communities. Ecography. 2011;34:552–65.Article 

    Google Scholar 
    Chase JM, Kraft NJB, Smith KG, Vellend M, Inouye BD. Using null models to disentangle variation in community dissimilarity from variation in α-diversity. Ecosphere. 2011;2:1–11.Article 

    Google Scholar 
    NASA Goddard Space Flight Center, Ocean Ecology Laboratory OBPG. Moderate-resolution Imaging Spectroradiometer (MODIS) aqua chlorophyll data. https://oceancolor.gsfc.nasa.gov/data/10.5067/AQUA/MODIS/L3B/CHL/2018/. Accessed 13 Nov 2020.Pommier T, Douzery EJP, Mouillot D. Environment drives high phylogenetic turnover among oceanic bacterial communities. Biol Lett. 2012;8:562–6.PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Giovannoni SJ, Cameron Thrash J, Temperton B. Implications of streamlining theory for microbial ecology. ISME J. 2014;8:1553–65.PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Sañudo-Wilhelmy SA, Gómez-Consarnau L, Suffridge C, Webb EA. The role of B vitamins in marine biogeochemistry. Ann Rev Mar Sci. 2014;6:339–67.PubMed 
    Article 

    Google Scholar 
    Morris JJ, Lenski RE, Zinser ER. The black queen hypothesis: evolution of dependencies through adaptive gene loss. MBio. 2012;3:e00036–12.PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Carini P, Campbell EO, Morré J, Sañudo-Wilhelmy SA, Cameron Thrash J, Bennett SE, et al. Discovery of a SAR11 growth requirement for thiamin’s pyrimidine precursor and its distribution in the Sargasso Sea. ISME J. 2014;8:1727–38.PubMed 
    PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Wienhausen G, Bruns S, Sultana S, Dlugosch L, Groon L, Wilkes H, et al. The overlooked role of a biotin precursor for marine bacteria – desthiobiotin as an escape route for biotin auxotrophy. ISME J. 2022. https://doi.org/10.1038/s41396-022-01304-w.Biller SJ, Coe A, Chisholm SW. Torn apart and reunited: Impact of a heterotroph on the transcriptome of Prochlorococcus. ISME J. 2016;10:2831–43.PubMed 
    PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Sokolovskaya OM, Shelton AN, Taga ME. Sharing vitamins: cobamides unveil microbial interactions. Science. 2020;369:eaba0165.PubMed 
    PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Wienhausen G, Dlugosch L, Jarling R, Wilkes H, Giebel H-A, Simon M. Availability of vitamin B12 and its lower ligand intermediate a-ribazole impact prokaryotic and protist communities in oceanic systems. ISME J. 2022;16:2002–14.PubMed 
    PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Reintjes G, Arnosti C, Fuchs B, Amann R. Selfish, sharing and scavenging bacteria in the Atlantic Ocean: a biogeographical study of bacterial substrate utilisation. ISME J. 2019;13:1119–32.PubMed 
    Article 
    CAS 

    Google Scholar 
    Bertrand EM, McCrow JP, Moustafa A, Zheng H, McQuaid JB, Delmont TO, et al. Phytoplankton-bacterial interactions mediate micronutrient colimitation at the coastal Antarctic sea ice edge. Proc Natl Acad Sci USA 2015;112:9938–43.PubMed 
    PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Amin SA, Hmelo LR, Van Tol HM, Durham BP, Carlson LT, Heal KR, et al. Interaction and signalling between a cosmopolitan phytoplankton and associated bacteria. Nature. 2015;522:98–101.PubMed 
    Article 
    CAS 

    Google Scholar 
    Shibl AA, Isaac A, Ochsenkühn MA, Cárdenas A, Fei C, Behringer G, et al. Diatom modulation of select bacteria through use of two unique secondary metabolites. Proc Natl Acad Sci USA 2020;117:27445–55.PubMed 
    PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Villarino E, Watson JR, Chust G, Woodill AJ, Klempay B, Jonsson B, et al. Global beta diversity patterns of microbial communities in the surface and deep ocean. Glob Ecol Biogeogr. 2022;00:1–14.
    Google Scholar 
    Cravatte S, Kestenare E, Marin F, Dutrieux P, Firing E. Subthermocline and intermediate zonal currents in the tropical Pacific Ocean: Paths and vertical structure. J Phys Oceanogr. 2017;47:2305–24.Article 

    Google Scholar 
    Cho BC, Azam F. Major role of bacteria in biogeochemical fluxes in the ocean’s interior. Nature. 1988;332:441–3.Article 
    CAS 

    Google Scholar 
    Salazar G, Cornejo-Castillo FM, Benítez-Barrios V, Fraile-Nuez E, Álvarez-Salgado XA, Duarte CM, et al. Global diversity and biogeography of deep-sea pelagic prokaryotes. ISME J. 2016;10:596–608.PubMed 
    Article 

    Google Scholar 
    Delmont TO, Kiefl E, Kilinc O, Esen OC, Uysal I, Rappé MS, et al. Single-amino acid variants reveal evolutionary processes that shape the biogeography of a global SAR11 subclade. Elife. 2019;8:e46497.PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Hillebrand H. On the generallity of the latutinal diversity gradient. Am Nat. 2004;163:192–211.PubMed 
    Article 

    Google Scholar  More

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    Evaluation of animal and plant diversity suggests Greenland’s thaw hastens the biodiversity crisis

    Species occurrence recordsWe compiled data on the distribution of 21,252 endemic species of any of the twelve megadiverse countries from four tetrapod (5,757) and four vascular plant groups (15,389) (amphibians, reptiles, birds, mammals, lycophytes, ferns, gymnosperms, and flowering plants). Species occurrence records were obtained from the Global Biodiversity Information Facility (GBIF)27, the International Union of Conservation of Nature (IUCN)28, and BirdLife60,61. We only modeled species with at least 25 unique records at a 5 arc-minute resolution (~10 km at the equator). In many cases, the processing of the IUCN polygons resulted in species with thousands of occurrence records. In these cases, we randomly chose a maximum of 500 records per species. The greater the number of observed records, more problems can be associated with spatial bias in the modeling62. In the case of records coming from IUCN polygons, more records require more computing time and these do not necessarily provide more information into the modeling given that their distribution is quite homogeneous.For tetrapods, we first explored the possibility of using occurrence records from GBIF, but data for megadiverse countries were scarce. Consequently, we decided to use the distribution polygons provided by the IUCN for amphibians, reptiles, and mammals (terrestrial and freshwater species)28, and the distribution polygons provided by BirdLife60. We based this decision on the fact that ecological niche modeling using IUCN polygons has been proven to give robust results20. For the IUCN polygons, we retained species that have been categorized as “extant”, “possibly extinct”, “probably extant”, “possibly extant”, and “presence uncertain”, discarding species considered to be “extinct”. In addition, we did not model species reported by the IUCN as “introduced”, “vagrant”, or those in the “assisted colonization” category; for mammals and birds, we only considered the distribution of “resident” species. Depending on the taxonomic group, and given the information available, we used different approaches to identify species endemic to any of twelve megadiverse countries: Australia, Brazil, China, Colombia, Ecuador, India, Indonesia, Madagascar, Mexico, Peru, Philippines, and Venezuela. For birds, we used BirdLife to identify species listed as “breeding endemic” and then choose the corresponding IUCN polygons. To identify the rest of endemic species in the other groups, we used a 0.08333° buffer around each country to select the IUCN polygons that fall completely within the country limits. We converted all selected species polygons into unique records at a 5 min resolution (~10 km at the equator).For vascular plants, we used geographic occurrence data obtained from the Global Biodiversity Information Facility by querying all records under “Tracheophyta” (we only considered “Preserved Specimens” in our search). Plants records were taxonomically homogenized and cleaned following the procedures described in ref. 63 using Kew’s Plants of the World database64 as the source of taxonomic information. Mostly, we identified endemic species as those with all occurrence records restricted to any given megadiverse country. For countries in which data for vascular plants were scarce or absent (e.g., India), we complemented occurrence information with polygons from the IUCN (although IUCN data for plants remains limited) following the procedure described for tetrapods.Climatic dataWe used the 19 bioclimatic variables available at WorldClim v.2 (Fick 2017) as the baseline (present-day) climatic conditions (1970–2000) (annual mean temperature, mean diurnal range, isothermality, temperature seasonality, the maximum temperature of the warmest month, minimum temperature of the coldest month, temperature annual range, mean annual range, mean temperature of wettest quarter, mean temperature of driest quarter, mean temperature of warmest quarter, mean temperature of coldest quarter, annual precipitation, precipitation of wettest month, precipitation of driest month, precipitation seasonality, precipitation of wettest quarter, precipitation of driest quarter, precipitation of warmest quarter and precipitation of coldest quarter). From this baseline scenario, bioclimatic variables start to vary because of climate change. We used bioclimatic variables derived from the IPSL-CM5-LR ocean-atmospheric model under five scenarios: (i) the high-emissions RCP 8.5 W/m2; and (ii) melting scenarios consisting of four different experiments of freshwater discharge into the North Atlantic from Greenland’s meltwater (see DeFrance16 for details). We acknowledge that using a single GCM does not allow us to estimate inter-GCM variability in the resulting distribution models; however, the melting scenarios do only exist for IPSL-CM5-LR GCM. We applied as control scenario RCP 8.5 because melting scenarios would have been more complicated to support with lower emission scenarios. In addition, we are using well-designed opportunity experiments from ref. 11 and wanted to be consistent with their choice of RCP 8.5. Also, these experiments are based on CMIP5, which shows similar climate impact fingerprints than CMIP665. This might be explained by the fact that CMIP5 and CMIP6 are still relatively close, and that the main climatic effects of the AMOC are already well-represented by the climate dynamics in CMIP5.The four melting scenarios are equivalent to a sea-level rise of 0.5, 1.0, 1.5, and 3.0 meters above the current sea level, and these are named accordingly: Melting 0.5, Melting 1.0, Melting 1.5., and Melting 3.0. These AMOC scenarios are experiments that were superimposed to the RCP 8.5 scenario adding 0.11, 0.22, 0.34, and 0.68 Sv (1 Sv = 106 m3/s) coming from a freshwater release that starts in 2020 and finishes in 2070 (Anthoff et al.14). We obtained debiased bioclimatic variables11 under the five future scenarios for three consecutive time horizons: T1: 2030 (2030–2060); T2: 2050 (2050–2080); and T3: 2070 (2070–2100). The time horizons evaluated represent short, medium, and long terms in order to help decision-makers order conservation priorities.Ecological niche modelingAt their most basic, the algorithms used to construct species distribution models relate species occurrence records with climatic variables to create a climatic profile that can be projected onto other time periods and geographic regions66. The resulting models have proven useful in evaluating the impacts of climate change on biodiversity and to identify varying levels of vulnerability among species32,67,68. Here, we employed a multi-algorithm (ensemble) approach to construct species distribution models as implemented in the “biomod2” package67 in R69 (Supplementary Fig. 33). The underlying philosophy of ensemble modeling is that each model carries a true “signal” about the climate-occurrence relationships we aim to capture, but it also carries “noise” created by biases and uncertainties in the data and model structure32,67. By combining models created with different algorithms, ensemble models aim at capturing the true “signal” while controlling for algorithm-derived model differences; therefore, model uncertainty is accounted for during model construction (see Supplementary Material for further detail).Prior to modeling, we reduced the number of bioclimatic variables per species by estimating collinearity among present-day bioclimatic variables. We employed the “corrSelect” function of the package fuzzySim70 in R69, using a Pearson correlation threshold of 0.8 and variance inflation factors as criteria to select variables. Given the number of species evaluated and the ecological information scarcity, we did not select a set of variables based on ecological knowledge by each of the species modeled. Instead, for the variables pre-selection, we used the statistical approach described above that has been proven to give models with good performance71,72. We used seven algorithms with a good predictive performance (evaluated with the TSS and ROC statistics; Supplementary Fig. 1): Maxent (MAXENT.Phillips), Generalized Additive Models (GAM), Classification Trees Analysis (CTA), Artificial Neural Networks (ANN), Surface Range Envelope (SRE), Flexible Discriminant Analysis (FDA), and Random Forest (RF). Because occurrence datasets consisted of presence-only data, for each model, we randomly generated 10,000 pseudo-absences within the model calibration area; we gave presences and absences the same importance during the calibration process (BIOMOD’s prevalence = 0.5). For each species, we selected a calibration area (i.e., the accessible area or M)73 using a spatial intersection between a 4° buffer around species occurrences and the terrestrial ecoregions occupied by the species73 (Supplementary Fig. 33). The projected M (i.e., the area accessible for species in future scenarios) was defined using a 2° buffer around the present-day calibration area (M). By limiting the M, we incorporated information about dispersal and ecological limitations of each species into the modeling66. We did this to take into account a more realistic dispersal scenario given the velocity with which climatic changes are happening and because there are geographic and ecological barriers, which is the reason why we used ecoregions to limit our M. We assumed climatic niche conservatism across time; and inside the projected M we also assumed full dispersal. Consequently, inside the projected M, the evaluated species can win or lose suitable climatic conditions.We calibrated each algorithm using a random sample of 70% of occurrence records and evaluated the resulting models using the remaining 30% of records. To validate the predictive power of the ecological niche models, we used the True Skill Statistics (TSS) and the Receiver Operating Characteristics (ROC) and performed 10 replicates for every model, providing a tenfold internal cross-validation. To account for uncertainty, we constructed the ensemble models (seven algorithms × ten replicates) using a total consensus rule, where models from different algorithms were assembled using a weighted mean of replicates with an evaluation threshold of AUC  > 0.7 (Supplementary Fig. 1). However, as shown by the distribution of validation statistic in Supplementary Fig. 1, most ensemble models presented a very good predictive power (AUC  > 0.8). In some cases, modeling issues in some insular species required that we change the calibration area (M) to the entire country.We used the resulting ensemble models to project the potential distribution of each species under both current and future climatic conditions (Supplementary Fig. 34). We then examined the frequency in which different bioclimatic variables appeared to have the highest contribution during model construction for each species. The algorithms used (Maxent, GAM, CTA, ANN, SRE, FDA, and RF) identify these variables by iteratively testing combinations of all the available variables (i.e., those selected based on low correlation values) until reaching a set of variables that was most informative on the distribution of species; this set of variables had the highest predictive power of species occurrence. For every species, we retrieved the two variables with the largest model contribution (Supplementary Figs. 34 and 35).Species geographic rangeWe converted ensemble probability maps into binary maps of presence/absence using the TSS threshold; these binary maps reflect the distribution of climatic suitability of species, where values of 0 and 1 represent grid cells with non-suitable and suitable climates, respectively. In order to approximate the vulnerability of individual species to climate change, we estimated the temporal changes in the extent of the area of climatic suitability (geographic range) for every species relative to the present-day distribution. We estimated species’ geographic ranges by identifying and counting those grid cells with suitable climatic conditions (values of 1) in the present-day and under future scenarios. We then estimated the proportion of range changes through time, quantifying the proportion of grid cells either lost or gained for each species. This allowed us to estimate the proportion of species (by country and group) projected to have a complete loss of geographic ranges in the future.Species richness, differences in species richness, potential species hotspots (PSH), and temporal dissimilarityWe used binary maps to construct presence-absence matrices (PAM), which contain information on the presence (values of 1) or absence (values of 0) of species across grid cells. Using these PAMs, we estimated species richness (SR) as the sum of species present in each grid cell; to visualize SR across space, we generated 16 species richness maps corresponding to the present-day and the four future scenarios at each of the three temporal horizons. We used these maps to estimate and visualize temporal differences in species richness (ΔSR) over time by subtracting the estimated SR in the future from the current SR, for every grid cell; for visualization, we standardized SR per country to the range 0–1. We assumed full dispersal ability of species in all analyses, meaning that all suitable areas in the future had the same probability of being occupied, irrespective of the distance to the present-day distribution.By calculating species richness (SR) across grid cells, we defined Potential Species Hotspots (PSH) within each country as those grid cells with the highest levels of SR. For this, we defined the PSH by calculating the maximum present-day species richness (maxSR) observed in each country and then identified grid cells with richness values above a threshold of maxSR*0.6. Considering only those grid cells with a SR above this threshold, we estimated the geographic extent of PSH across time periods and scenarios and estimated changes to the extent of PSH relative to present-day conditions. Given that we use the threshold to define PSHs, we tested two additional thresholds (20 and 90%) to define and quantify the extent of PSHs. However, these additional results agree with the general trend. We chose not to base our threshold on the distribution of SR values (i.e., quantiles, median) due to the high proportion of grid cells with SR  More

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    Fungi are more transient than bacteria in caterpillar gut microbiomes

    Futuyma, D. J. & Agrawal, A. A. Macroevolution and the biological diversity of plants and herbivores. Proc. Natl. Acad. Sci. 106, 18054–18061 (2009).ADS 
    CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Frago, E., Dicke, M. & Godfray, H. C. J. Insect symbionts as hidden players in insect–plant interactions. Trends Ecol. Evol. 27, 705–711 (2012).PubMed 
    Article 

    Google Scholar 
    Gurung, K., Wertheim, B. & Salles, J. F. The microbiome of pest insects: It is not just bacteria. Entomol. Exp. Appl. 167, 156–170 (2019).Article 

    Google Scholar 
    Douglas, A. E. Multiorganismal insects: Diversity and function of resident microorganisms. Annu. Rev. Entomol. 60, 17–34 (2015).CAS 
    PubMed 
    Article 

    Google Scholar 
    Engel, P. & Moran, N. A. The gut microbiota of insects—diversity in structure and function. FEMS Microbiol. Rev. 37, 699–735 (2013).CAS 
    PubMed 
    Article 

    Google Scholar 
    Giron, D. et al. Chapter seven—influence of microbial symbionts on plant-insect interactions. In Advances in Botanical Research Vol. 81 (eds Sauvion, N. et al.) 225–257 (Academic Press, 2017).
    Google Scholar 
    Chen, B. et al. Biodiversity and activity of the gut microbiota across the life history of the insect herbivore Spodoptera littoralis. Sci. Rep. 6, 29505 (2016).ADS 
    CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Vacher, C. et al. The phyllosphere: Microbial jungle at the plant–climate interface. Annu. Rev. Ecol. Evol. Syst. 47, 1–24 (2016).Article 

    Google Scholar 
    Griffin, E. A. & Carson, W. P. Tree endophytes: cryptic drivers of tropical forest diversity. In Endophytes of Forest Trees: Biology and Applications (eds Pirttilä, A. M. & Frank, A. C.) 63–103 (Springer International Publishing, 2018). https://doi.org/10.1007/978-3-319-89833-9_4.Chapter 

    Google Scholar 
    Peñuelas, J., Rico, L., Ogaya, R., Jump, A. S. & Terradas, J. Summer season and long-term drought increase the richness of bacteria and fungi in the foliar phyllosphere of Quercus ilex in a mixed Mediterranean forest. Plant Biol. 14, 565–575 (2012).PubMed 
    Article 

    Google Scholar 
    Laforest-Lapointe, I., Paquette, A., Messier, C. & Kembel, S. W. Leaf bacterial diversity mediates plant diversity and ecosystem function relationships. Nature 546, 145–147 (2017).ADS 
    CAS 
    PubMed 
    Article 

    Google Scholar 
    Kembel, S. W. et al. Relationships between phyllosphere bacterial communities and plant functional traits in a neotropical forest. Proc. Natl. Acad. Sci. USA. 111, 13715–13720 (2014).ADS 
    CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Kembel, S. W. & Mueller, R. C. Plant traits and taxonomy drive host associations in tropical phyllosphere fungal communities. Botany 92, 303–311 (2014).Article 

    Google Scholar 
    Faeth, S. H. & Hammon, K. E. Fungal endophytes in oak trees: Long-term patterns of abundance and associations with leafminers. Ecology 78, 810–819 (1997).Article 

    Google Scholar 
    Broderick, N. A., Raffa, K. F., Goodman, R. M. & Handelsman, J. Census of the bacterial community of the gypsy moth larval midgut by using culturing and culture-independent methods. Appl. Environ. Microbiol. 70, 293–300 (2004).ADS 
    CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Pinto-Tomás, A. A. et al. Comparison of midgut bacterial diversity in tropical caterpillars (Lepidoptera: Saturniidae) fed on different diets. Environ. Entomol. 40, 1111–1122 (2011).PubMed 
    Article 

    Google Scholar 
    Ravenscraft, A., Berry, M., Hammer, T., Peay, K. & Boggs, C. Structure and function of the bacterial and fungal gut microbiota of Neotropical butterflies. Ecol. Monogr. 89, e01346 (2019).Article 

    Google Scholar 
    Hammer, T. J., Sanders, J. G. & Fierer, N. Not all animals need a microbiome. FEMS Microbiol. Lett. 366, 117 (2019).Article 
    CAS 

    Google Scholar 
    Mason, C. J. et al. Diet influences proliferation and stability of gut bacterial populations in herbivorous lepidopteran larvae. PLoS ONE 15, e0229848 (2020).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Montagna, M. et al. Evidence of a bacterial core in the stored products pest Plodia interpunctella: The influence of different diets. Environ. Microbiol. 18, 4961–4973 (2016).CAS 
    PubMed 
    Article 

    Google Scholar 
    Phalnikar, K., Kunte, K. & Agashe, D. Disrupting butterfly caterpillar microbiomes does not impact their survival and development. Proc. R. Soc. B Biol. Sci. 286, 20192438 (2019).CAS 
    Article 

    Google Scholar 
    Somerville, J., Zhou, L. & Raymond, B. Aseptic rearing and infection with gut bacteria improve the fitness of transgenic diamondback moth, Plutella xylostella. Insects 10, 89 (2019).PubMed Central 
    Article 

    Google Scholar 
    González-Serrano, F. et al. The gut microbiota composition of the moth brithys crini reflects insect metamorphosis. Microb. Ecol. 79, 960–970 (2020).PubMed 
    Article 
    CAS 

    Google Scholar 
    Goharrostami, M. & JalaliSendi, J. Investigation on endosymbionts of Mediterranean flour moth gut and studying their role in physiology and biology. J. Stored Prod. Res. 75, 10–17 (2018).Article 

    Google Scholar 
    Vilanova, C., Baixeras, J., Latorre, A. & Porcar, M. The generalist inside the specialist: Gut bacterial communities of two insect species feeding on toxic plants are dominated by Enterococcus sp. Front. Microbiol. 7, 1005 (2016).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Minard, G., Tikhonov, G., Ovaskainen, O. & Saastamoinen, M. The microbiome of the Melitaea cinxia butterfly shows marked variation but is only little explained by the traits of the butterfly or its host plant. Environ. Microbiol. 21, 4253–4269 (2019).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Shapira, M. Gut microbiotas and host evolution: Scaling up symbiosis. Trends Ecol. Evol. 31, 539–549 (2016).PubMed 
    Article 

    Google Scholar 
    Chen, B. et al. Gut bacterial and fungal communities of the domesticated silkworm (Bombyx mori) and wild mulberry-feeding relatives. ISME J. 12, 2252–2262 (2018).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Mason, C. J. & Raffa, K. F. Acquisition and structuring of midgut bacterial communities in gypsy moth (Lepidoptera: Erebidae) larvae. Environ. Entomol. 43, 595–604 (2014).PubMed 
    Article 

    Google Scholar 
    Paniagua Voirol, L. R., Frago, E., Kaltenpoth, M., Hilker, M. & Fatouros, N. E. Bacterial symbionts in Lepidoptera: Their diversity, transmission, and impact on the host. Front. Microbiol. 9, 556 (2018).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Laforest-Lapointe, I., Messier, C. & Kembel, S. W. Host species identity, site and time drive temperate tree phyllosphere bacterial community structure. Microbiome 4, 27 (2016).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Meyer, K. M. & Leveau, J. H. J. Microbiology of the phyllosphere: A playground for testing ecological concepts. Oecologia 168, 621–629 (2012).ADS 
    PubMed 
    Article 

    Google Scholar 
    Gomes, T., Pereira, J. A., Benhadi, J., Lino-Neto, T. & Baptista, P. Endophytic and epiphytic phyllosphere fungal communities are shaped by different environmental factors in a Mediterranean ecosystem. Microb. Ecol. 76, 668–679 (2018).PubMed 
    Article 

    Google Scholar 
    Rastogi, G. et al. Leaf microbiota in an agroecosystem: Spatiotemporal variation in bacterial community composition on field-grown lettuce. ISME J. 6, 1812–1822 (2012).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Whitaker, M. R. L., Salzman, S., Sanders, J., Kaltenpoth, M. & Pierce, N. E. Microbial communities of lycaenid butterflies do not correlate with larval diet. Front. Microbiol. 7, 1920 (2016).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Zheng, Y. et al. Midgut microbiota diversity of potato tuber moth associated with potato tissue consumed. BMC Microbiol. 20, 58 (2020).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Griffin, E. A., Harrison, J. G., McCormick, M. K., Burghardt, K. T. & Parker, J. D. Tree diversity reduces fungal endophyte richness and diversity in a large-scale temperate forest experiment. Diversity 11, 234 (2019).Article 

    Google Scholar 
    Kim, M. et al. Distinctive phyllosphere bacterial communities in tropical trees. Microb. Ecol. 63, 674–681 (2012).PubMed 
    Article 

    Google Scholar 
    Hammer, T. J., Janzen, D. H., Hallwachs, W., Jaffe, S. P. & Fierer, N. Caterpillars lack a resident gut microbiome. Proc. Natl. Acad. Sci. 114, 9641–9646 (2017).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Višňovská, D. et al. Caterpillar gut and host plant phylloplane mycobiomes differ: A new perspective on fungal involvement in insect guts. FEMS Microbiol. Ecol. 96, fiaa116 (2020).PubMed 
    Article 
    CAS 

    Google Scholar 
    Voříšková, J. & Baldrian, P. Fungal community on decomposing leaf litter undergoes rapid successional changes. ISME J. 7, 477–486 (2013).PubMed 
    Article 
    CAS 

    Google Scholar 
    Pochon, X., Zaiko, A., Fletcher, L. M., Laroche, O. & Wood, S. A. Wanted dead or alive? Using metabarcoding of environmental DNA and RNA to distinguish living assemblages for biosecurity applications. PLoS ONE 12, e0187636 (2017).PubMed 
    PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Schlechter, R. O., Miebach, M. & Remus-Emsermann, M. N. P. Driving factors of epiphytic bacterial communities: A review. J. Adv. Res. 19, 57–65 (2019).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Seabloom, E. W. et al. Effects of nutrient supply, herbivory, and host community on fungal endophyte diversity. Ecology 100, e02758 (2019).PubMed 
    Article 

    Google Scholar 
    Berlec, A. Novel techniques and findings in the study of plant microbiota: Search for plant probiotics. Plant Sci. 193–194, 96–102 (2012).PubMed 
    Article 
    CAS 

    Google Scholar 
    Unterseher, M., Reiher, A., Finstermeier, K., Otto, P. & Morawetz, W. Species richness and distribution patterns of leaf-inhabiting endophytic fungi in a temperate forest canopy. Mycol. Prog. 6, 201–212 (2007).Article 

    Google Scholar 
    Gilbert, G. S., Reynolds, D. R. & Bethancourt, A. The patchiness of epifoliar fungi in tropical forests: Host range, host abundance, and environment. Ecology 88, 575–581 (2007).PubMed 
    Article 

    Google Scholar 
    Stone, B. W. G. & Jackson, C. R. Canopy position is a stronger determinant of bacterial community composition and diversity than environmental disturbance in the phyllosphere. FEMS Microbiol. Ecol. 95, fiz032 (2019).CAS 
    PubMed 
    Article 

    Google Scholar 
    Copeland, J. K., Yuan, L., Layeghifard, M., Wang, P. W. & Guttman, D. S. Seasonal community succession of the phyllosphere microbiome. Mol. Plant. Microbe Interact. 28, 274–285 (2015).CAS 
    PubMed 
    Article 

    Google Scholar 
    Stone, B. W. G. & Jackson, C. R. Seasonal patterns contribute more towards phyllosphere bacterial community structure than short-term perturbations. Microb. Ecol. https://doi.org/10.1007/s00248-020-01564-z (2020).Article 
    PubMed 
    PubMed Central 

    Google Scholar 
    Truchado, P., Gil, M. I., Reboleiro, P., Rodelas, B. & Allende, A. Impact of solar radiation exposure on phyllosphere bacterial community of red-pigmented baby leaf lettuce. Food Microbiol. 66, 77–85 (2017).PubMed 
    Article 

    Google Scholar 
    Wang, X. et al. Variability of gut microbiota across the life cycle of Grapholita molesta (Lepidoptera: Tortricidae). Front. Microbiol. 11, 1366 (2020).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Toju, H. & Fukatsu, T. Diversity and infection prevalence of endosymbionts in natural populations of the chestnut weevil: Relevance of local climate and host plants. Mol. Ecol. 20, 853–868 (2011).PubMed 
    Article 

    Google Scholar 
    Yun, J.-H. et al. Insect gut bacterial diversity determined by environmental habitat, diet, developmental stage, and phylogeny of host. Appl. Environ. Microbiol. 80, 5254–5264 (2014).ADS 
    PubMed 
    PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Sánchez, N. E., Pereyra, P. C. & Luna, M. G. Spatial patterns of parasitism of the solitary parasitoid Pseudapanteles dignus (Hymenoptera: Braconidae) on Tuta absoluta (Lepidoptera: Gelechiidae). Environ. Entomol. 38, 365–374 (2009).PubMed 
    Article 

    Google Scholar 
    Santos, A. M. C. & Quicke, D. L. J. Large-scale diversity patterns of parasitoid insects. Entomol. Sci. 14, 371–382 (2011).Article 

    Google Scholar 
    Mereghetti, V., Chouaia, B. & Montagna, M. New insights into the microbiota of moth pests. Int. J. Mol. Sci. 18, 2450 (2017).PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Floater, G. J. Estimating movement of the processionary caterpillar Ochrogaster zunifer Herrich-Schäffer (Lepidoptera: Thaumetopoeidae) between discrete resource patches. Aust. J. Entomol. 35, 279–283 (1996).Article 

    Google Scholar 
    Turčáni, M. & Patočka, J. Does intraguild predation of Cosmia trapezina L. (Lep.: Noctuidae) influence the abundance of other Lepidoptera forest pests?. J. For. Sci. 57, 472–482 (2011).Article 

    Google Scholar 
    Hikisz, J. & Soszynska-Maj, A. What moths fly in winter? The assemblage of moths active in a temperate deciduous forest during the cold season in Central Poland. J. Entomol. Res. Soc. 17, 59–71 (2015).
    Google Scholar 
    Bell, J. R., Bohan, D. A., Shaw, E. M. & Weyman, G. S. Ballooning dispersal using silk: World fauna, phylogenies, genetics and models. Bull. Entomol. Res. 95, 69–114 (2005).CAS 
    PubMed 
    Article 

    Google Scholar 
    Griffin, E. A. & Carson, W. P. The ecology and natural history of foliar bacteria with a focus on tropical forests and agroecosystems. Bot. Rev. 81, 105–149 (2015).Article 

    Google Scholar 
    Qian, X. et al. Mainland and island populations of Mussaenda kwangtungensis differ in their phyllosphere fungal community composition and network structure. Sci. Rep. 10, 952 (2020).ADS 
    CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Herren, C. M. & McMahon, K. D. Keystone taxa predict compositional change in microbial communities. Environ. Microbiol. 20, 2207–2217 (2018).PubMed 
    Article 

    Google Scholar 
    Humphrey, P. T. & Whiteman, N. K. Insect herbivory reshapes a native leaf microbiome. Nat. Ecol. Evol. 4, 221–229 (2020).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Müller, T., Müller, M., Behrendt, U. & Stadler, B. Diversity of culturable phyllosphere bacteria on beech and oak: The effects of lepidopterous larvae. Microbiol. Res. 158, 291–297 (2003).PubMed 
    Article 

    Google Scholar 
    Hrcek, J., Miller, S. E., Quicke, D. L. J. & Smith, M. A. Molecular detection of trophic links in a complex insect host-parasitoid food web. Mol. Ecol. Resour. 11, 786–794 (2011).PubMed 
    Article 

    Google Scholar 
    Bateman, C., Šigut, M., Skelton, J., Smith, K. E. & Hulcr, J. Fungal associates of the Xylosandrus compactus (Coleoptera: Curculionidae, Scolytinae) are spatially segregated on the insect body. Environ. Entomol. 45, 883–890 (2016).CAS 
    PubMed 
    Article 

    Google Scholar 
    Toju, H., Tanabe, A. S., Yamamoto, S. & Sato, H. High-coverage ITS primers for the DNA-based identification of ascomycetes and basidiomycetes in environmental samples. PLoS ONE 7, e40863 (2012).ADS 
    CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Chelius, M. K. & Triplett, E. W. The diversity of archaea and bacteria in association with the roots of Zea mays L. Microb. Ecol. 41, 252–263 (2001).CAS 
    PubMed 
    Article 

    Google Scholar 
    Redford, A. J., Bowers, R. M., Knight, R., Linhart, Y. & Fierer, N. The ecology of the phyllosphere: Geographic and phylogenetic variability in the distribution of bacteria on tree leaves. Environ. Microbiol. 12, 2885–2893 (2010).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Bolyen, E. et al. QIIME 2: Reproducible, Interactive, Scalable, and Extensible Microbiome Data Science https://peerj.com/preprints/27295 (2018) https://doi.org/10.7287/peerj.preprints.27295v2.Rivers, A. R., Weber, K. C., Gardner, T. G., Liu, S. & Armstrong, S. D. ITSxpress: Software to rapidly trim internally transcribed spacer sequences with quality scores for marker gene analysis. F1000Research 7, 1418 (2018).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Callahan, B. J. et al. DADA2: High-resolution sample inference from Illumina amplicon data. Nat. Methods 13, 581–583 (2016).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Bokulich, N. A. et al. Optimizing taxonomic classification of marker-gene amplicon sequences with QIIME 2’s q2-feature-classifier plugin. Microbiome 6, 90 (2018).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Quast, C. et al. The SILVA ribosomal RNA gene database project: Improved data processing and web-based tools. Nucleic Acids Res. 41, D590–D596 (2013).CAS 
    PubMed 
    Article 

    Google Scholar 
    Nilsson, R. H. et al. The UNITE database for molecular identification of fungi: Handling dark taxa and parallel taxonomic classifications. Nucleic Acids Res. 47, D259–D264 (2019).CAS 
    PubMed 
    Article 

    Google Scholar 
    UNITE Community. UNITE QIIME Release for Fungi 2. (2019).Davis, N. M., Proctor, D. M., Holmes, S. P., Relman, D. A. & Callahan, B. J. Simple statistical identification and removal of contaminant sequences in marker-gene and metagenomics data. Microbiome 6, 226 (2018).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    R Core Team. R: A Language and Environment for Statistical Computing (R Foundation for Statistical Computing, 2020).Ter Braak, C. J. F. ter & Smilauer, P. Canoco reference manual and user’s guide: software for ordination, version 5.0. (2012).Ondov, B. D., Bergman, N. H. & Phillippy, A. M. Interactive metagenomic visualization in a Web browser. BMC Bioinform. 12, 385 (2011).Article 

    Google Scholar 
    Chrostek, E., Pelz-Stelinski, K., Hurst, G. D. D. & Hughes, G. L. Horizontal transmission of intracellular insect symbionts via plants. Front. Microbiol. 8, 2237 (2017).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Fox, J. & Weisberg, S. An R Companion to Applied Regression (SAGE Publications, 2018).
    Google Scholar 
    Oksanen, J. et al. vegan: Community Ecology Package. (2020).Anderson, M. J. Distance-based tests for homogeneity of multivariate dispersions. Biometrics 62, 245–253 (2006).MathSciNet 
    PubMed 
    MATH 
    Article 

    Google Scholar 
    Renkonen, O. Statistisch-ökologische Untersuchungen über die terrestrische Käferwelt der finnischen Bruchmoore. Ann. Zool. Soc. Zool.-Bot. Fenn. Vanamo 6, 1–231 (1938).
    Google Scholar 
    Bates, D., Mächler, M., Bolker, B. & Walker, S. Fitting linear mixed-effects models using lme4. J. Stat. Softw. 67, 1–48 (2015).Article 

    Google Scholar 
    Roberts, D. W. labdsv: Ordination and Multivariate Analysis for Ecology (2019).Cáceres, M. D. & Legendre, P. Associations between species and groups of sites: Indices and statistical inference. Ecology 90, 3566–3574 (2009).PubMed 
    Article 

    Google Scholar 
    Dufrêne, M. & Legendre, P. Species assemblages and indicator species: The need for a flexible asymmetrical approach. Ecol. Monogr. 67, 345–366 (1997).
    Google Scholar 
    Benjamini, Y. & Hochberg, Y. Controlling the false discovery rate: A practical and powerful approach to multiple testing. J. R. Stat. Soc. Ser. B Methodol. 57, 289–300 (1995).MathSciNet 
    MATH 

    Google Scholar  More

  • in

    Ecological niche modeling based on ensemble algorithms to predicting current and future potential distribution of African swine fever virus in China

    Galindo, I. & Alonso, C. African swine fever virus: A review. Viruses 9, 103 (2017).PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Blome, S., Franzke, K. & Beer, M. African swine fever: A review of current knowledge. Virus Res. 2020, 198099 (2020).Article 
    CAS 

    Google Scholar 
    Li, X. & Tian, K. African swine fever in China. Vet. Rec. 183, 300 (2018).PubMed 
    Article 

    Google Scholar 
    Wang, T., Sun, Y. & Qiu, H. J. African swine fever: An unprecedented disaster and challenge to China. Infect. Dis. Poverty 7, 66–70 (2018).Article 

    Google Scholar 
    Gaudreault, N. N., Madden, D. W., Wilson, W. C., Trujillo, J. D. & Richt, J. A. African swine fever virus: An emerging DNA arbovirus. Front. Vet. Sci. 7, 215 (2020).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Ge, S. et al. Molecular characterization of African swine fever virus, China, 2018. Emerg. Infect. Dis. 24, 2131–2133 (2018).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Mason-D’Croz, D. et al. Modelling the global economic consequences of a major African swine fever outbreak in China. Nat. Food 1, 221–228 (2020).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Woonwong, Y., Do, T. D. & Thanawongnuwech, R. The future of the pig industry after the introduction of African swine fever into Asia. Anim. Front. 10, 30–37 (2020).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Mulieri, P. R. & Patitucci, L. D. Using ecological niche models to describe the geographical distribution of the myiasis-causing Cochliomyia hominivorax (Diptera: Calliphoridae) in southern South America. Parasitol. Res. 118, 1077–1086 (2019).PubMed 
    Article 

    Google Scholar 
    Escobar, L. E. Ecological niche modeling: An introduction for veterinarians and epidemiologists. Front. Vet. Sci. 7, 519059 (2020).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Bosso, L. et al. The rise and fall of an alien: why the successful colonizer Littorina saxatilis failed to invade the Mediterranean Sea. Biol. Invasions https://doi.org/10.1007/s10530-022-02838-y (2022).Article 

    Google Scholar 
    Wen, X. et al. Prediction of the potential distribution pattern of the great gerbil (Rhombomys opimus) under climate change based on ensemble modelling. Pest Manag. Sci. 78, 3128–3134 (2022).CAS 
    PubMed 
    Article 

    Google Scholar 
    Cheng, Y. et al. Evaluating the risk for Usutu virus circulation in Europe: Comparison of environmental niche models and epidemiological models. Int. J. Health Geogr. 17, 1–14 (2018).Article 

    Google Scholar 
    Naimi, B. & Araújo, M. B. Sdm: A reproducible and extensible R platform for species distribution modelling. Ecography 39, 368–375 (2016).Article 

    Google Scholar 
    Georges, D. & Thuiller, W. An example of species distribution modeling with biomod2. https://r-forge.r-project.org/…/inst/doc/Simple_species_modelling.pdf?root=biomod (2013).Thuiller, W. BIOMOD: Optimizing predictions of species distributions and projecting potential future shifts under global change. Glob. Change Biol. 9, 1353–1362 (2003).ADS 
    Article 

    Google Scholar 
    Thuiller, W., Lafourcade, B., Engler, R. & Araújo, M. B. BIOMOD: A platform for ensemble forecasting of species distributions. Ecography 32, 369–373 (2009).Article 

    Google Scholar 
    Thuiller, W. Editorial commentary on “BIOMOD: Optimizing predictions of species distributions and projecting potential future shifts under global change”. Glob. Change Biol. 20, 3591–3592 (2014).ADS 
    Article 

    Google Scholar 
    Navarro-Cerrillo, R. M., Duque-Lazo, J., Manzanedo, R. D., Sánchez-Salguero, R. & Palacios-Rodriguez, G. Climate change may threaten the southernmost Pinus nigra subsp. salzmannii (Dunal) Franco populations: An ensemble niche-based approach. iForest Biogeosci. For. 11, 396–405 (2018).Article 

    Google Scholar 
    Assefa, A., Tibebu, A., Bihon, A., Dagnachew, A. & Muktar, Y. Ecological niche modeling predicting the potential distribution of African horse sickness virus from 2020 to 2060. Sci. Rep. 12, 1748 (2022).ADS 
    CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Raffini, F. et al. From nucleotides to satellite imagery: Approaches to identify and manage the invasive pathogen Xylella fastidiosa and its insect vectors in Europe. Sustainability 12, 4508 (2020).CAS 
    Article 

    Google Scholar 
    Wani, I. A. et al. Predicting habitat suitability and niche dynamics of Dactylorhiza hatagirea and Rheum webbianum in the Himalaya under projected climate change. Sci. Rep. 12, 13205 (2022).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Boulanger-Lapointe, N. et al. Herbivore species coexistence in changing rangeland ecosystems: First high resolution national open-source and open-access ensemble models for Iceland. Sci. Total Environ. 845, 157140 (2022).ADS 
    CAS 
    PubMed 
    Article 

    Google Scholar 
    Sillero, N. & Barbosa, A. M. Common mistakes in ecological niche models. Int. J. Geogr. Inf. Sci. 35, 213–226 (2020).Article 

    Google Scholar 
    Varela, S., Anderson, R. P., García-Valdés, R. & Fernández-González, F. Environmental filters reduce the effects of sampling bias and improve predictions of ecological niche models. Ecography 37, 1084–1091 (2014).
    Google Scholar 
    Barbet-Massin, M., Jiguet, F., Albert, C. H. & Thuiller, W. Selecting pseudo-absences for species distribution models: How, where and how many?. Methods Ecol. Evol. 3, 327–338 (2010).Article 

    Google Scholar 
    Allouche, O., Tsoar, A. & Kadmon, R. Assessing the accuracy of species distribution models: Prevalence, kappa and the true skill statistic (TSS). J. Appl. Ecol. 43, 1223–1232 (2006).Article 

    Google Scholar 
    Xiao-Ge, X. et al. Introduction of BCC models and its participation in CMIP6. Clim. Change Res. 5, 533–539 (2019).
    Google Scholar 
    Wu, T. et al. The Beijing Climate Center Climate System Model (BCC-CSM): The main progress from CMIP5 to CMIP6. Geosci. Model Dev. 12, 1573–1600 (2019).ADS 
    Article 

    Google Scholar 
    Thomson, A. M. et al. RCP4.5: A pathway for stabilization of radiative forcing by 2100. Clim. Change 109, 77–94 (2011).ADS 
    CAS 
    Article 

    Google Scholar 
    Assefa, A., Tibebu, A., Bihon, A. & Yimana, M. Global ecological niche modelling of current and future distribution of peste des petits ruminants virus (PPRv) with an ensemble modelling algorithm. Transbound Emerg. Dis. 68, 3601–3610 (2021).PubMed 
    Article 

    Google Scholar 
    Jori, F. & Bastos, A. D. Role of wild suids in the epidemiology of African swine fever. EcoHealth 6, 296–310 (2009).PubMed 
    Article 

    Google Scholar 
    Teklue, T., Sun, Y., Abid, M., Luo, Y. & Qiu, H. J. Current status and evolving approaches to African swine fever vaccine development. Transbound Emerg. Dis. 67, 529–542 (2020).PubMed 
    Article 

    Google Scholar 
    Arias, M. et al. Approaches and perspectives for development of African swine fever virus vaccines. Vaccines 5, 35 (2017).PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Chenais, E. et al. Epidemiological considerations on African swine fever in Europe 2014–2018. Porcine Health Manag. 5, 1–10 (2019).Article 

    Google Scholar 
    Quembo, C. J., Jori, F., Vosloo, W. & Heath, L. Genetic characterization of African swine fever virus isolates from soft ticks at the wildlife/domestic interface in Mozambique and identification of a novel genotype. Transbound Emerg. Dis. 65, 420–431 (2018).CAS 
    PubMed 
    Article 

    Google Scholar 
    Torres, J. R. et al. Chikungunya fever: Atypical and lethal cases in the Western hemisphere: A Venezuelan experience. IDCases 2, 6–10 (2015).PubMed 
    Article 

    Google Scholar 
    Nuanualsuwan, S. et al. Persistence of African swine fever virus on porous and non-porous fomites at environmental temperatures. Porc. Health Manag. 8, 34 (2022).Article 

    Google Scholar 
    Davies, K. et al. Survival of African swine fever virus in excretions from pigs experimentally infected with the Georgia 2007/1 isolate. Transbound Emerg. Dis. 64, 425–431 (2017).CAS 
    PubMed 
    Article 

    Google Scholar 
    Carlson, J. et al. Stability of African swine fever virus in soil and options to mitigate the potential transmission risk. Pathogens 9, 977 (2020).CAS 
    PubMed Central 
    Article 

    Google Scholar 
    Salari, L. S., Vatandoost, H., Telmadarraiy, Z., Entezar, M. R. & Kia, E. Seasonal activity of ticks and their importance in tick-borne infectious diseases in West Azerbaijan, Iran. J. Arthropod. Borne Dis. 2, 28–34 (2008).
    Google Scholar 
    Vial, L. Biological and ecological characteristics of soft ticks (Ixodida: Argasidae) and their impact for predicting tick and associated disease distribution. Parasite 16, 191–202 (2009).CAS 
    PubMed 
    Article 

    Google Scholar 
    Jian, L. et al. WANG potential adaptability of soft tick vectors of African swine fever to China. Chin. J. Vect. Biol. Control 21, 317–320 (2010).
    Google Scholar 
    Cwynar, P., Stojkov, J. & Wlazlak, K. African swine fever status in Europe. Viruses 11, 310 (2019).PubMed Central 
    Article 

    Google Scholar 
    Marmion, M., Parviainen, M., Luoto, M., Heikkinen, R. K. & Thuiller, W. Evaluation of consensus methods in predictive species distribution modelling. Divers. Distrib. 15, 59–69 (2009).Article 

    Google Scholar  More

  • in

    Genomic adaptation of the picoeukaryote Pelagomonas calceolata to iron-poor oceans revealed by a chromosome-scale genome sequence

    Field, C. B., Behrenfeld, M. J., Randerson, J. T. & Falkowski, P. Primary production of the biosphere: integrating terrestrial and oceanic components. Science 281, 237–240 (1998).CAS 
    PubMed 
    Article 

    Google Scholar 
    Boyce, D. G., Lewis, M. R. & Worm, B. Global phytoplankton decline over the past century. Nature 466, 591–596 (2010).CAS 
    PubMed 
    Article 

    Google Scholar 
    Henson, S. A., Cael, B. B., Allen, S. R. & Dutkiewicz, S. Future phytoplankton diversity in a changing climate. Nat. Commun. 12, 5372 (2021).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Vaulot, D., Eikrem, W., Viprey, M. & Moreau, H. The diversity of small eukaryotic phytoplankton (≤3 μm) in marine ecosystems. FEMS Microbiol. Rev. 32, 795–820 (2008).CAS 
    PubMed 
    Article 

    Google Scholar 
    Agawin, N. S. R., Duarte, C. M. & Agustí, S. Nutrient and temperature control of the contribution of picoplankton to phytoplankton biomass and production. Limnol. Oceanogr. 45, 591–600 (2000).CAS 
    Article 

    Google Scholar 
    Morán, X. A. G., López-Urrutia, Á., Calvo-Díaz, A. & Li, W. K. W. Increasing importance of small phytoplankton in a warmer ocean. Glob. Change Biol. 16, 1137–1144 (2010).Article 

    Google Scholar 
    Li, W. K. W., McLaughlin, F. A., Lovejoy, C. & Carmack, E. C. Smallest algae thrive as the arctic ocean freshens. Science 326 https://doi.org/10.1126/science.1179798 (2009).Benner, I., Irwin, A. J. & Finkel, Z. V. Capacity of the common Arctic picoeukaryote Micromonas to adapt to a warming ocean. Limnol. Oceanography Lett. 5, 221–227 (2020).Sunda, W. G. & Huntsman, S. A. Iron uptake and growth limitation in oceanic and coastal phytoplankton. Mar. Chem. 50, 189–206 (1995).CAS 
    Article 

    Google Scholar 
    Raven, J. A. The twelfth Tansley Lecture. Small is beautiful: the picophytoplankton. Funct. Ecol. 12, 503–513 (1998).Article 

    Google Scholar 
    Morel, F. M. M. & Price, N. M. The biogeochemical cycles of trace metals in the oceans. Science 300, 944–947 (2003).CAS 
    PubMed 
    Article 

    Google Scholar 
    Gao, X., Bowler, C. & Kazamia, E. Iron metabolism strategies in diatoms. J. Exp. Bot. 72, 2165–2180 (2021).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Caputi, L. et al. Community-level responses to iron availability in open ocean plankton ecosystems. Glob. Biogeochemical Cycles 33, 391–419 (2019).CAS 
    Article 

    Google Scholar 
    Carradec, Q. et al. A global ocean atlas of eukaryotic genes. Nat. Commun. 9, 373 (2018).PubMed 
    PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Morrissey, J. et al. A novel protein, ubiquitous in marine phytoplankton, concentrates iron at the cell surface and facilitates uptake. Curr. Biol. 25, 364–371 (2015).CAS 
    PubMed 
    Article 

    Google Scholar 
    Moore, C. M. et al. Processes and patterns of oceanic nutrient limitation. Nat. Geosci. 6, 701–710 (2013).CAS 
    Article 

    Google Scholar 
    Kumar, A. & Bera, S. Revisiting nitrogen utilization in algae: a review on the process of regulation and assimilation. Bioresour. Technol. Rep. 12, 100584 (2020).Article 

    Google Scholar 
    Smith, S. R. et al. Evolution and regulation of nitrogen flux through compartmentalized metabolic networks in a marine diatom. Nat. Commun. 10, 4552 (2019).PubMed 
    PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Berg, G. M., Glibert, P. M., Lomas, M. W. & Burford, M. A. Organic nitrogen uptake and growth by the chrysophyte Aureococcus anophagefferens during a brown tide event. Mar. Biol. 129, 377–387 (1997).CAS 
    Article 

    Google Scholar 
    Andersen, R. A., Saunders, G. W., Paskind, M. P. & Sexton, J. P. Ultrastructure and 18s rRNA gene sequence for Pelagomonas calceolata gen. et sp. nov. and the description of a new algal class, the pelagophyceae classis nov. J. Phycol. 29, 701–715 (1993).CAS 
    Article 

    Google Scholar 
    Choi, C. J. et al. Seasonal and geographical transitions in eukaryotic phytoplankton community structure in the Atlantic and Pacific Oceans. Front. Microbiol. 11, 542372 (2020).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Duerschlag, J. et al. Niche partitioning by photosynthetic plankton as a driver of CO2-fixation across the oligotrophic South Pacific Subtropical Ocean. ISME J 1–12 https://doi.org/10.1038/s41396-021-01072-z (2021).Worden, A. Z. et al. Global distribution of a wild alga revealed by targeted metagenomics. Curr. Biol. 22, R675–R677 (2012).CAS 
    PubMed 
    Article 

    Google Scholar 
    Dimier, C. é, Brunet, C., Geider, R. & Raven, J. Growth and photoregulation dynamics of the picoeukaryote Pelagomonas calceolata in fluctuating light. Limnol. Oceanogr. 54, 823–836 (2009).CAS 
    Article 

    Google Scholar 
    Dupont, C. L. et al. Genomes and gene expression across light and productivity gradients in eastern subtropical Pacific microbial communities. ISME J. 9, 1076–1092 (2015).CAS 
    PubMed 
    Article 

    Google Scholar 
    Kang, Y. et al. Transcriptomic responses of four pelagophytes to nutrient (N, P) and light stress. Front. Mar. Sci. 8, 636699 (2021).Huff, J. T., Zilberman, D. & Roy, S. W. Mechanism for DNA transposons to generate introns on genomic scales. Nature 538, 533–536 (2016).PubMed 
    PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Waterhouse, R. M. et al. BUSCO applications from quality assessments to gene prediction and phylogenomics. Mol. Biol. Evol. 35, 543–548 (2018).CAS 
    PubMed 
    Article 

    Google Scholar 
    Nambiar, M. & Smith, G. R. Repression of harmful meiotic recombination in centromeric regions. Semin Cell Dev. Biol. 54, 188–197 (2016).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Pessia, E. et al. Evidence for widespread GC-biased gene conversion in eukaryotes. Genome Biol. Evol. 4, 675–682 (2012).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Chi, J., Mahé, F., Loidl, J., Logsdon, J. & Dunthorn, M. Meiosis gene inventory of four ciliates reveals the prevalence of a synaptonemal complex-independent crossover pathway. Mol. Biol. Evol. 31, 660–672 (2014).CAS 
    PubMed 
    Article 

    Google Scholar 
    Ramesh, M. A., Malik, S.-B. & Logsdon, J. M. A phylogenomic inventory of meiotic genes; evidence for sex in Giardia and an early eukaryotic origin of meiosis. Curr. Biol. 15, 185–191 (2005).CAS 
    PubMed 

    Google Scholar 
    Schurko, A. M. & Logsdon, J. M. Using a meiosis detection toolkit to investigate ancient asexual ‘scandals’ and the evolution of sex. Bioessays 30, 579–589 (2008).CAS 
    PubMed 
    Article 

    Google Scholar 
    Ibarbalz, F. M. et al. Global trends in marine plankton diversity across kingdoms of life. Cell 179, 1084–1097.e21 (2019).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Frémont, P. et al. Restructuring of plankton genomic biogeography in the surface ocean under climate change. Nat. Clim. Chang. 12, 393–401 (2022).Article 

    Google Scholar 
    Ward, D. M. & Kaplan, J. Ferroportin-mediated iron transport: expression and regulation. Biochim Biophys. Acta 1823, 1426–1433 (2012).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Gobler, C. J., Lonsdale, D. J. & Boyer, G. L. A review of the causes, effects, and potential management of harmful brown tide blooms caused by Aureococcus anophagefferens (Hargraves et sieburth). Estuaries 28, 726–749 (2005).Article 

    Google Scholar 
    Agusti, S., Lubián, L. M., Moreno-Ostos, E., Estrada, M. & Duarte, C. M. Projected changes in photosynthetic picoplankton in a warmer subtropical ocean. Front. Mar. Sci. 5, 506 (2019).Article 

    Google Scholar 
    Anderson, S. I., Barton, A. D., Clayton, S., Dutkiewicz, S. & Rynearson, T. A. Marine phytoplankton functional types exhibit diverse responses to thermal change. Nat. Commun. 12, 6413 (2021).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Martin, J. H. et al. Testing the iron hypothesis in ecosystems of the equatorial Pacific Ocean. Nature 371, 123–129 (1994).CAS 
    Article 

    Google Scholar 
    Shi, D., Xu, Y., Hopkinson, B. M. & Morel, F. M. M. Effect of ocean acidification on iron availability to marine phytoplankton. Science 327, 676–679 (2010).CAS 
    PubMed 
    Article 

    Google Scholar 
    McQuaid, J. B. et al. Carbonate-sensitive phytotransferrin controls high-affinity iron uptake in diatoms. Nature 555, 534–537 (2018).CAS 
    PubMed 
    Article 

    Google Scholar 
    Turnšek, J. et al. Proximity proteomics in a marine diatom reveals a putative cell surface-to-chloroplast iron trafficking pathway. eLife 10, e52770 (2021).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Urzica, E. I. et al. Systems and trans-system level analysis identifies conserved iron deficiency responses in the plant lineage[W][OA]. Plant Cell 24, 3921–3948 (2012).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Mao, X. et al. Diversity, prevalence, and expression of cyanase genes (cynS) in planktonic marine microorganisms. ISME J. 16, 602–605 (2022).CAS 
    PubMed 
    Article 

    Google Scholar 
    Ou, L., Cai, Y., Jin, W., Wang, Z. & Lu, S. Understanding the nitrogen uptake and assimilation of the Chinese strain of Aureococcus anophagefferens (Pelagophyceae). Algal Res. 34, 182–190 (2018).Article 

    Google Scholar 
    Shu, C. J., Ulrich, L. E. & Zhulin, I. B. The NIT domain: a predicted nitrate-responsive module in bacterial sensory receptors. Trends Biochem Sci. 28, 121–124 (2003).CAS 
    PubMed 
    Article 

    Google Scholar 
    Wu, S. Q., Chai, W., Lin, J. T. & Stewart, V. General nitrogen regulation of nitrate assimilation regulatory gene nasR expression in Klebsiella oxytoca M5al. J. Bacteriol. 181, 7274–7284 (1999).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Durand, N. C. et al. Juicer provides a one-click system for analyzing loop-resolution Hi-C experiments. Cell Syst. 3, 95–98 (2016).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Li, R., Li, Y., Kristiansen, K. & Wang, J. SOAP: short oligonucleotide alignment program. Bioinformatics 24, 713–714 (2008).CAS 
    PubMed 
    Article 

    Google Scholar 
    Alberti, A. et al. Viral to metazoan marine plankton nucleotide sequences from the Tara Oceans expedition. Sci. Data 4, 170093 (2017).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Kopylova, E., Noé, L. & Touzet, H. SortMeRNA: fast and accurate filtering of ribosomal RNAs in metatranscriptomic data. Bioinformatics 28, 3211–3217 (2012).CAS 
    PubMed 
    Article 

    Google Scholar 
    Kim, D., Song, L., Breitwieser, F. P. & Salzberg, S. L. Centrifuge: rapid and sensitive classification of metagenomic sequences. Genome Res. https://doi.org/10.1101/gr.210641.116 (2016).Vurture, G. W. et al. GenomeScope: fast reference-free genome profiling from short reads. Bioinformatics 33, 2202–2204 (2017).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Vaser, R. & Šikić, M. Yet another de novo genome assembler. BioRxiv. https://doi.org/10.1101/656306 (2019).Liu, H. et al. SMARTdenovo: a de novo assembler using long noisy reads. Gigabyte 2021, 1–9 (2021).Article 

    Google Scholar 
    Kolmogorov, M., Yuan, J., Lin, Y. & Pevzner, P. A. Assembly of long, error-prone reads using repeat graphs. Nat. Biotechnol. 37, 540–546 (2019).CAS 
    PubMed 
    Article 

    Google Scholar 
    Ruan, J. & Li, H. Fast and accurate long-read assembly with wtdbg2. Nat. Methods 17, 155–158 (2020).CAS 
    PubMed 
    Article 

    Google Scholar 
    Wick, R. R., Schultz, M. B., Zobel, J. & Holt, K. E. Bandage: interactive visualization of de novo genome assemblies. Bioinformatics 31, 3350–3352 (2015).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Vaser, R., Sović, I., Nagarajan, N. & Šikić, M. Fast and accurate de novo genome assembly from long uncorrected reads. Genome Res 27, 737–746 (2017).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Aury, J.-M. & Istace, B. Hapo-G, haplotype-aware polishing of genome assemblies with accurate reads. NAR Genomics Bioinform. 3, lqab034 (2021).Benson, G. Tandem repeats finder: a program to analyze DNA sequences. Nucleic Acids Res. 27, 573–580 (1999).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Morgulis, A., Gertz, E. M., Schäffer, A. A. & Agarwala, R. A fast and symmetric DUST implementation to mask low-complexity DNA sequences. J. Comput Biol. 13, 1028–1040 (2006).CAS 
    PubMed 
    Article 

    Google Scholar 
    Smit, A. F. A., Hubley, R. & Green, P. RepeatMasker. http://repeatmasker.org/ (2013).Price, A. L., Jones, N. C. & Pevzner, P. A. De novo identification of repeat families in large genomes. Bioinformatics 21, i351–i358 (2005).CAS 
    PubMed 
    Article 

    Google Scholar 
    Quinlan, A. R. & Hall, I. M. BEDTools: a flexible suite of utilities for comparing genomic features. Bioinformatics 26, 841–842 (2010).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Pedersen, B. S. & Quinlan, A. R. Mosdepth: quick coverage calculation for genomes and exomes. Bioinformatics 34, 867–868 (2018).CAS 
    PubMed 
    Article 

    Google Scholar 
    Schulz, M. H., Zerbino, D. R., Vingron, M. & Birney, E. Oases: robust de novo RNA-seq assembly across the dynamic range of expression levels. Bioinformatics 28, 1086–1092 (2012).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Zerbino, D. R. & Birney, E. Velvet: algorithms for de novo short read assembly using de Bruijn graphs. Genome Res. 18, 821–829 (2008).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Li, H. et al. The sequence Alignment/Map format and SAMtools. Bioinformatics 25, 2078–2079 (2009).PubMed 
    PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Marchler-Bauer, A. et al. CDD: NCBI’s conserved domain database. Nucleic Acids Res. 43, D222–D226 (2015).CAS 
    PubMed 
    Article 

    Google Scholar 
    Niang, G. et al. METdb: A genomic reference database for marine species. F1000Research, https://doi.org/10.7490/f1000research.1118000.1 (2020).Kent, W. J. BLAT–the BLAST-like alignment tool. Genome Res. 12, 656–664 (2002).CAS 
    PubMed 
    PubMed Central 

    Google Scholar 
    Altschul, S. F., Gish, W., Miller, W., Myers, E. W. & Lipman, D. J. Basic local alignment search tool. J. Mol. Biol. 215, 403–410 (1990).CAS 
    PubMed 
    Article 

    Google Scholar 
    Birney, E., Clamp, M. & Durbin, R. GeneWise and genomewise. Genome Res. 14, 988–995 (2004).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Stanke, M. et al. AUGUSTUS: ab initio prediction of alternative transcripts. Nucleic Acids Res. 34, W435–W439 (2006).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Dubarry, M. et al. Gmove a tool for eukaryotic gene predictions using various evidences. F1000Research, https://doi.org/10.7490/f1000research.1111735.1 (2016).Sibbald, S. J., Lawton, M. & Archibald, J. M. Mitochondrial genome evolution in pelagophyte algae. Genome Biol. Evol. 13, evab018 (2021).Quevillon, E. et al. InterProScan: protein domains identifier. Nucleic Acids Res. 33, W116–W120 (2005).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Buchfink, B., Reuter, K. & Drost, H.-G. Sensitive protein alignments at tree-of-life scale using DIAMOND. Nat. Methods 18, 366–368 (2021).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Aramaki, T. et al. KofamKOALA: KEGG Ortholog assignment based on profile HMM and adaptive score threshold. Bioinformatics 36, 2251–2252 (2020).CAS 
    PubMed 
    Article 

    Google Scholar 
    Delmont, T. O. et al. Functional repertoire convergence of distantly related eukaryotic plankton lineages abundant in the sunlit ocean. Cell Genomics 2, 100123 (2022).CAS 
    Article 

    Google Scholar 
    Li, H. & Durbin, R. Fast and accurate short read alignment with Burrows–Wheeler transform. Bioinformatics 25, 1754–1760 (2009).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Pesant, S. et al. Open science resources for the discovery and analysis of Tara Oceans data. Sci. Data 2, 150023 (2015).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Aumont, O., Ethé, C., Tagliabue, A., Bopp, L. & Gehlen, M. PISCES-v2: an ocean biogeochemical model for carbon and ecosystem studies. Geoscientific Model Dev. 8, 2465–2513 (2015).CAS 
    Article 

    Google Scholar 
    Clayton, S. et al. Biogeochemical versus ecological consequences of modeled ocean physics. Biogeosciences 14, 2877–2889 (2017).CAS 
    Article 

    Google Scholar 
    Ravindra, K., Rattan, P., Mor, S. & Aggarwal, A. N. Generalized additive models: building evidence of air pollution, climate change and human health. Environ. Int. 132, 104987 (2019).CAS 
    PubMed 
    Article 

    Google Scholar 
    Günther, F. & Fritsch, S. neuralnet: training of neural networks. R. J. 2, 30–38 (2010).Article 

    Google Scholar 
    Gobler, C. J. et al. Niche of harmful alga Aureococcus anophagefferens revealed through ecogenomics. Proc. Natl Acad. Sci. USA 108, 4352–4357 (2011).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Guo, L. et al. Genome assembly of Nannochloropsis oceanica provides evidence of host nucleus overthrow by the symbiont nucleus during speciation. Commun. Biol. 2, 1–12 (2019).CAS 
    Article 

    Google Scholar 
    Bowler, C. et al. The Phaeodactylum genome reveals the evolutionary history of diatom genomes. Nature 456, 239–244 (2008).CAS 
    PubMed 
    Article 

    Google Scholar 
    Armbrust, E. V. et al. The genome of the diatom thalassiosira pseudonana: ecology, evolution, and metabolism. Science 306, 79–86 (2004).CAS 
    PubMed 
    Article 

    Google Scholar 
    Worden, A. Z. et al. Green evolution and dynamic adaptations revealed by genomes of the marine picoeukaryotes micromonas. Science 324, 268–272 (2009).CAS 
    PubMed 
    Article 

    Google Scholar 
    Palenik, B. et al. The tiny eukaryote Ostreococcus provides genomic insights into the paradox of plankton speciation. PNAS 104, 7705–7710 (2007).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Moreau, H. et al. Gene functionalities and genome structure in Bathycoccus prasinos reflect cellular specializations at the base of the green lineage. Genome Biol. 13, R74 (2012).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Read, B. A. et al. Pan genome of the phytoplankton Emiliania underpins its global distribution. Nature 499, 209–213 (2013).CAS 
    PubMed 
    Article 

    Google Scholar  More

  • in

    Genic distribution modelling predicts adaptation of the bank vole to climate change

    Davis, M. B. & Shaw, R. G. Range shifts and adaptive responses to Quaternary climate change. Science 292, 673–679 (2001).CAS 
    PubMed 
    Article 

    Google Scholar 
    Parmesan, C. Ecological and evolutionary responses to recent climate change. Annu. Rev. Ecol. Evol. Syst. 37, 637–669 (2006).Article 

    Google Scholar 
    Hewitt, G. The genetic legacy of the Quaternary ice ages. Nature 405, 907–913 (2000).CAS 
    PubMed 
    Article 

    Google Scholar 
    Williams, J. E. & Blois, J. L. Range shifts in response to past and future climate change: can climate velocities and species’ dispersal capabilities explain variation in mammalian range shifts? J. Biogeogr. 45, 2175–2189 (2018).Article 

    Google Scholar 
    Parmesan, C. & Yohe, G. A globally coherent fingerprint of climate change impacts across natural systems. Nature 421, 37–42 (2003).CAS 
    PubMed 
    Article 

    Google Scholar 
    Thomas, C. D. Climate, climate change and range boundaries. Divers. Distrib. 16, 488–495 (2010).Article 

    Google Scholar 
    Bradshaw, A. D. & McNeilly, T. Evolutionary response to global climatic change. Ann. Bot. 67, 5–14 (1991).Article 

    Google Scholar 
    Harter, D. E. V. et al. Impacts of global climate change on the floras of oceanic islands—projections, implications and current knowledge. Perspect. Plant Ecol. Evol. Syst. 17, 160–183 (2015).Article 

    Google Scholar 
    Veron, S., Haevermans, T., Govaerts, R., Mouchet, M. & Pellens, R. Distribution and relative age of endemism across islands worldwide. Sci. Rep. 9, 1–12 (2019).Article 
    CAS 

    Google Scholar 
    Román-Palacios, C. & Wiens, J. J. Recent responses to climate change reveal the drivers of species extinction and survival. Proc. Natl Acad. Sci. USA 117, 4211–4217 (2020).PubMed 
    PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Jump, A. S. & Peñuelas, J. Running to stand still: adaptation and the response of plants to rapid climate change. Ecol. Lett. 8, 1010–1020 (2005).PubMed 
    Article 

    Google Scholar 
    Freeman, B. G., Scholer, M. N., Ruiz-Gutierrez, V. & Fitzpatrick, J. W. Climate change causes upslope shifts and mountaintop extirpations in a tropical bird community. Proc. Natl Acad. Sci. USA 115, 11982–11987 (2018).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Gilbert, K. J. & Whitlock, M. C. The genetics of adaptation to discrete heterogeneous environments: frequent mutation or large-effect alleles can allow range expansion. J. Evol. Biol. 30, 591–602 (2017).CAS 
    PubMed 
    Article 

    Google Scholar 
    Christmas, M. J., Breed, M. F. & Lowe, A. J. Constraints to and conservation implications for climate change adaptation in plants. Conserv. Genet. 17, 305–320 (2015).Article 
    CAS 

    Google Scholar 
    Barrett, R. D. H. & Schluter, D. Adaptation from standing genetic variation. Trends Ecol. Evol. 23, 38–44 (2008).PubMed 
    Article 

    Google Scholar 
    Lai, Y. T. et al. Standing genetic variation as the predominant source for adaptation of a songbird. Proc. Natl Acad. Sci. USA 116, 2152–2157 (2019).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Hoban, S. et al. Finding the genomic basis of local adaptation: Pitfalls, practical solutions, and future directions. Am. Nat. 188, 379–397 (2016).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Hoffmann, A. A. & Sgrò, C. M. Climate change and evolutionary adaptation. Nature 470, 479–485 (2011).CAS 
    PubMed 
    Article 

    Google Scholar 
    Catullo, R. A., Llewelyn, J., Phillips, B. L. & Moritz, C. C. The potential for rapid evolution under anthropogenic climate change. Curr. Biol. 29, R996–R1007 (2019).CAS 
    PubMed 
    Article 

    Google Scholar 
    Botkin, D. B. et al. Forecasting the effects of global warming on biodiversity. BioScience 57, 227–236 (2007).Article 

    Google Scholar 
    Wiens, J. A., Stralberg, D., Jongsomjit, D., Howell, C. A. & Snyder, M. A. Niches, models, and climate change: assessing the assumptions and uncertainties. Proc. Natl Acad. Sci. USA 106, 19729–19736 (2009).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Smith, A. B., Godsoe, W., Rodríguez-Sánchez, F., Wang, H. H. & Warren, D. Niche estimation above and below the species level. Trends Ecol. Evol. 34, 260–273 (2019).PubMed 
    Article 

    Google Scholar 
    Waldvogel, A.-M. et al. Evolutionary genomics can improve prediction of species’ responses to climate change. Evol. Lett. 4, 4–18 (2020).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Razgour, O. et al. An integrated framework to identify wildlife populations under threat from climate change. Mol. Ecol. Resour. 18, 18–31 (2018).PubMed 
    Article 

    Google Scholar 
    Razgour, O. et al. Considering adaptive genetic variation in climate change vulnerability assessment reduces species range loss projections. Proc. Natl Acad. Sci. USA 116, 10418–10423 (2019).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Aguirre-Liguori, J. A., Ramírez-Barahona, S., Tiffin, P. & Eguiarte, L. E. Climate change is predicted to disrupt patterns of local adaptation in wild and cultivated maize. Proc. R. Soc. B 286, 20190486 (2019).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Evans, T. G., Diamond, S. E. & Kelly, M. W. Mechanistic species distribution modelling as a link between physiology and conservation. Conserv. Physiol. 3, cov056 (2015).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Hall, S. J. G. Haemoglobin polymorphism in the bank vole, Clethrionomys glareolus, in Britain. J. Zool. 187, 153–160 (1979).Article 

    Google Scholar 
    Kotlík, P. et al. Adaptive phylogeography: functional divergence between haemoglobins derived from different glacial refugia in the bank vole. Proc. R. Soc. B 281, 20140021 (2014).PubMed 
    PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Searle, J. B. et al. The Celtic fringe of Britain: Insights from small mammal phylogeography. Proc. R. Soc. B 276, 4287–4294 (2009).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Escalante, M. A., Horníková, M., Marková, S. & Kotlík, P. Niche differentiation in a postglacial colonizer, the bank vole Clethrionomys glareolus. Ecol. Evol. 11, 8054–8070 (2021).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Reischl, E., Dafre, A. L., Franco, J. L. & Wilhelm Filho, D. Distribution, adaptation and physiological meaning of thiols from vertebrate hemoglobins. Comp. Biochem. Physiol. Part C. Toxicol. Pharmacol. 146, 22–53 (2007).Article 
    CAS 

    Google Scholar 
    Storz, J. F. & Wheat, C. W. Integrating evolutionary and functional approaches to infer adaptation at specific loci. Evolution 64, 2489–2509 (2010).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Rossi, R. et al. Different metabolizing ability of thiol reactants in human and rat blood. Biochemical and pharmacological implications. J. Biol. Chem. 276, 7004–7010 (2001).CAS 
    PubMed 
    Article 

    Google Scholar 
    Vitturi, D. A. et al. Antioxidant functions for the hemoglobin β93 cysteine residue in erythrocytes and in the vascular compartment in vivo. Free Radic. Biol. Med. 55, 119–129 (2013).CAS 
    PubMed 
    Article 

    Google Scholar 
    Petersen, A. G. et al. Hemoglobin polymerization via disulfide bond formation in the hypoxia-tolerant turtle Trachemys scripta: Implications for antioxidant defense and O2 transport. Am. J. Physiol. Regul. Integr. Comp. Physiol. 314, R84–R93 (2018).PubMed 
    Article 
    CAS 

    Google Scholar 
    Paital, B. et al. Longevity of animals under reactive oxygen species stress and disease susceptibility due to global warming. World J. Biol. Chem. 7, 110–127 (2016).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Jacobs, P. J., Oosthuizen, M. K., Mitchell, C., Blount, J. D. & Bennett, N. C. Heat and dehydration induced oxidative damage and antioxidant defenses following incubator heat stress and a simulated heat wave in wild caught four-striped field mice Rhabdomys dilectus. PLoS One 15, e0242279 (2020).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Kotlík, P., Marková, S., Horníková, M., Escalante, M. A. & Searle, J. B. The bank vole (Clethrionomys glareolus) as a model system for adaptive phylogeography in the European theater. Front. Ecol. Evol. 10, 866605 (2022).Article 

    Google Scholar 
    Strážnická, M., Marková, S., Searle, J. B. & Kotlík, P. Playing hide-and-seek in beta-globin genes: Gene conversion transferring a beneficial mutation between differentially expressed gene guplicates. Genes 9, 492 (2018).PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Stocker, T. Climate Change 2013: the Physical Science Basis: Working Group I Contribution to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change (Cambridge University Press, 2013).Araújo, M. B., Pearson, R. G., Thuiller, W. & Erhard, M. Validation of species-climate impact models under climate change. Glob. Chang. Biol. 11, 1504–1513 (2005).Article 

    Google Scholar 
    Peterson, A. T., Papeş, M. & Soberón, J. Rethinking receiver operating characteristic analysis applications in ecological niche modeling. Ecol. Modell. 213, 63–72 (2008).Article 

    Google Scholar 
    Warren, D. L., Glor, R. E. & Turelli, M. Environmental niche equivalency versus conservatism: quantitative approaches to niche evolution. Evolution 62, 2868–2883 (2008).PubMed 
    Article 

    Google Scholar 
    Warren, D. L. et al. ENMTools 1.0: an R package for comparative ecological biogeography. Ecography 44, 504–511 (2021).Article 

    Google Scholar 
    Mayes, J. & Wheeler, D. Regional weather and climates of the British Isles—part 1: introduction. Weather 68, 3–8 (2013).Article 

    Google Scholar 
    Kotlík, P., Marková, S., Konczal, M., Babik, W. & Searle, J. B. Genomics of end-Pleistocene population replacement in a small mammal. Proc. R. Soc. B 285, 20172624 (2018).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Capblancq, T., Fitzpatrick, M. C., Bay, R. A., Exposito-Alonso, M. & Keller, S. R. Genomic prediction of (mal)adaptation across current and future climatic landscapes. Annu. Rev. Ecol. Evol. Syst. 51, 245–269 (2020).Article 

    Google Scholar 
    Benito Garzón, M., Robson, T. M. & Hampe, A. ΔTraitSDMs: species distribution models that account for local adaptation and phenotypic plasticity. N. Phytol. 222, 1757–1765 (2019).Article 

    Google Scholar 
    Wisz, M. S. et al. Effects of sample size on the performance of species distribution models. Divers. Distrib. 14, 763–773 (2008).Article 

    Google Scholar 
    Phillips, S. J., Dudík, M. & Schapire, R. E. A maximum entropy approach to species distribution modeling. in Twenty-first International Conference on Machine Learning – ICML ’04 9, 83 (ACM Press, 2004).Hijmans, R. J., Cameron, S. E., Parra, J. L., Jones, P. G. & Jarvis, A. Very high resolution interpolated climate surfaces for global land areas. Int. J. Climatol. 25, 1965–1978 (2005).Article 

    Google Scholar 
    Zeng, Y., Low, B. W. & Yeo, D. C. J. Novel methods to select environmental variables in MaxEnt: A case study using invasive crayfish. Ecol. Modell. 341, 5–13 (2016).Article 

    Google Scholar 
    Warren, D. L. & Seifert, S. N. Ecological niche modeling in Maxent: the importance of model complexity and the performance of model selection criteria. Ecol. Appl. 21, 335–342 (2011).PubMed 
    Article 

    Google Scholar 
    Warren, D. L., Glor, R. E. & Turelli, M. ENMTools: a toolbox for comparative studies of environmental niche models. Ecography 33, 607–611 (2010).Article 

    Google Scholar 
    Gent, P. R. et al. The community climate system model version 4. J. Clim. 24, 4973–4991 (2011).Article 

    Google Scholar 
    Dufresne, J. L. et al. Climate change projections using the IPSL-CM5 Earth System Model: from CMIP3 to CMIP5. Clim. Dyn. 40, 2123–2165 (2013).Article 

    Google Scholar 
    Watanabe, S. et al. MIROC-ESM 2010: model description and basic results of CMIP5-20c3m experiments. Geosci. Model Dev. 4, 845–872 (2011).Article 

    Google Scholar 
    Giorgetta, M. A. et al. Climate and carbon cycle changes from 1850 to 2100 in MPI-ESM simulations for the Coupled Model Intercomparison Project phase 5. J. Adv. Model. Earth Syst. 5, 572–597 (2013).Article 

    Google Scholar 
    Schoener, T. W. The anolis lizards of Bimini: resource partitioning in a complex fauna. Ecology 49, 704–726 (1968).Article 

    Google Scholar  More

  • in

    Putting pesticides on the map for pollinator research and conservation

    Overall strategyThe aim of this project was to synthesize publicly available data on land use, pesticide use, and toxicity to generate a ‘toolkit’ of data resources enabling improved landscape-scale research on pesticide-pollinator interactions. The main outcomes are several novel datasets covering ten major crops or crop groups in each of the 48 contiguous U.S. states:

    I)

    Average application rate (kg/ha/yr) of >500 common pesticide active ingredients (1997–2017),

    II)

    Aggregate bee toxic load (honey bee lethal doses/ha/yr) of all insecticides combined (1997–2014), (Note that this dataset ends in 2014 because after that year, data on seed-applied pesticides were excluded29, and these contribute significantly to bee toxic load21)

    III)

    Reclass tables relating these pesticide-use indicators to land use/land cover classes to enable the creation of maps predicting annual pesticide loading at 30–56 m resolution.

    An overview of the steps, inputs, and outcomes are provided in Fig. 1.Fig. 1Overview of the data synthesis workflow described in this paper.Full size imageData inputsA summary of input datasets is provided in Table 1.Table 1 Data inputs used in this study.Full size tablePesticide dataPesticide use data were last downloaded from the USGS National Pesticide Synthesis Project30,31 in June 2020. This dataset reports total kg applied of 508 common pesticide active ingredients by combinations of state, crop group, and year for the contiguous U.S. from 1992–2017 (crop groups explained in Table 2). The data are derived primarily from farmer surveys conducted by a private firm (Kynetec). For California, USGS obtains data from the state’s pesticide use reporting program32. USGS then aggregates and standardizes both data sources into a common national dataset that is released to the public and was used in this effort. The USGS dataset includes both a ‘high’ and a ‘low’ estimate of pesticide use, varying based on the treatment of missing values in the source data31. Because previous work on this dataset suggested that the ‘low’ estimate more closely matches independent pesticide estimates33, we used the ‘low’ estimate throughout, but assess the influence of this choice on the resulting estimates (see Technical Validation). While we focus on the ‘low’ estimate for the data and outputs presented in this manuscript, the workflow we developed can accommodate both the low and high estimates.Table 2 USGS crop categories in pesticide source data, based on metadata from USGS30,31 and personal communication with USGS staff scientists.Full size tableCrop area dataTo translate pesticide use estimates into average application rates, it was necessary to divide total kg of pesticide applied by the land area to which it was potentially applied. Crop area data were last downloaded from the Quick Stats Database of the USDA34 in May 2020, using data files downloaded from the ‘developer’ page. This USDA dataset contains crop acreage estimates generated from two sources: the Census of Agriculture (Census), which is comprehensive but conducted only once every five years35 and the crop survey conducted by the National Agricultural Statistics Service (NASS), which is an annual survey based on a representative sample of farmers in major production regions for a more limited subset of crops36.Honey bee toxicity dataTranslating insecticide application rates into estimates of bee toxic load (honey bee lethal doses/ha/yr) required toxicity values for each insecticide active ingredient in the USGS dataset. We used LD50 values for the honey bee (Apis mellifera) because this is the standard terrestrial insect species used in regulatory procedures, and so has the most comprehensive data available. This species is also of particular concern as an important provider of pollination services to agriculture. As previously reported21, the LD50 values were derived from two sources, the ECOTOX database37 of the U.S. Environmental Protection Agency (US-EPA), and the Pesticide Properties Database (PPDB)038. ECOTOX was queried in July 2017, by searching for all LD50 values for the honey bee (Apis mellifera) that were generated under laboratory conditions. Acute contact and oral LD50 values for the honey bee were recorded manually from the PPDB in June 2018.Land cover dataMapping pesticides to the landscape requires land use/land cover data indicating where crops are grown. We used the USDA Cropland Data Layer (CDL)39, a land cover dataset at 30–56 m resolution produced through remote sensing. This dataset is available starting in 2008 for states in the contiguous U.S., with some states (primarily in the Midwest and Mid-South) available back to the early 2000s.Data preparationRelating datasetsA major challenge in this data synthesis effort was relating the various data sources to each other, given that each dataset has unique nomenclature and organization. We created the following keys (summarized in Table 3) to facilitate joining datasets:

    I)

    USGS-USDA crop keys – Using documentation and metadata associated with the USGS pesticide dataset31,33,40, we created keys relating the USGS surveyed crop names (‘ePest’ crops) and the ten USGS crop categories to the large number of corresponding crop acreage data items in the Census and NASS datasets. For annual crops and hay crops we used ‘harvested acres,’ and for tree crops we used ‘acres bearing & non-bearing.’ These choices were made to maximize data availability and to correspond as closely as possible to the crop acreage from which the pesticide data were derived31. A separate key was developed for California because California pesticide data derives from different source data and covers a larger range of crops.

    II)

    USGS-CASRN compound key – Using USGS documentation as well as background information on pesticide active ingredients38,41, we generated keys relating USGS active ingredient names to chemical abstracts service (CAS) registry numbers to facilitate matching compounds to the ECOTOX and PPDB databases.

    III)

    USGS compound-category key – In this key we classified active ingredients into major groups (insecticides, fungicides, nematicides, etc.) and into mode-of-action classes on the basis of information from pesticide databases and resistance action committees38,41,42,43,44.

    IV)

    USGS-USDA compound key – To facilitate our data validation effort, we generated a key relating USGS compound names to USDA compound names, on the basis of information from several pesticide databases38,41.

    V)

    USGS-CDL land use-land cover keys – Using documentation from the USGS pesticide dataset describing the crop composition of each of the ten crop categories31, we created a key that matches these categories to land cover classes in the CDL. A separate key was developed for California given the differences in surveyed crops in this state, noted above.

    Table 3 Keys generated to relate datasets.Full size tableProcessing crop area dataBecause of differences in the crops included in pesticide use estimates, crop acreage data were processed separately for California and for all other states, and then re-joined, as follows: Acreage data were first filtered to include only data at the state level, reporting total annual acreage for states in the contiguous U.S. after 1996. Acreage data were joined to the appropriate USGS-USDA crop key and only those crops represented in the pesticide dataset were retained. We then generated an acreage dataset with single rows for each combination of crop, state, and year using data from the Census when available (1997, 2002, 2007, 2012, 2017), data from NASS in non-Census years, and temporal interpolation to fill in remaining missing values (i.e. linear interpolation between values in the same state and crop in the nearest surrounding years). This process was repeated for California, using acreage data for only that state in combination with the CA crop key. Finally, acreage data in the two datasets were recombined, converted to hectares, and summed by USGS crop group.Processing honey bee toxicity dataProcessing for the honey bee toxicity data has been described in detail elsewhere21. Briefly, toxicity values were categorized as contact, oral, or other and standardized where possible into µg/bee. Records were retained if they represented acute exposure (4 days or less) for adult bees representing contact or oral LD50 values in µg/bee. To generate a consensus list of contact and oral LD50 values for all insecticides reported in the USGS dataset, we gave preference to point estimates and estimates generated through U.S. or E.U. regulatory procedures, taking a geometric mean if multiple such estimates were available. Unbounded estimates (“greater than” or “less than” some value) were only used when point estimates were unavailable, using the minimum (for “less than”) or the maximum (for “greater than”). If values for a compound were unavailable in both datasets, we used the median toxicity value for the insecticide mode-of-action group. And finally, in rare cases (n = 1/148 compounds for contact toxicity and 8/148 compounds for oral toxicity) we were still left without a toxicity estimate for a particular insecticide. In those cases, we used the median value for all insecticides.Data synthesisCompound-specific application rates for state-crop-year combinationsUSGS data on pesticide application were joined to data on crop area. Average pesticide application rates were calculated by dividing kg applied by crop area (ha) for each combination of compound, crop group, state, and year.Aggregate insecticide application rates for state-crop-year combinationsThe dataset from the previous step was filtered to include only insecticides, and then joined to LD50 data by compound name. Bee toxic load associated with each insecticide active ingredient was calculated by dividing the application rate by the contact or oral LD50 value (µg/bee) to generate a number of lethal doses applied per unit area. These values were then summed across compounds to generate estimates of kg and bee toxic load per ha for combinations of crop group, state, and year.Missing values were estimated using temporal interpolation, where possible (i.e. linear interpolation between values in the same state and crop group in the nearest surrounding years). This dataset ends in 2014 because after that year seed-applied pesticides were excluded from the source data29, and they constitute a major contribution to bee toxic load21.We focused bee toxic load on insecticides for three reasons. First, quality of LD50 data is highest for insecticides and uneven for fungicides and herbicides. Point estimates make up the majority of LD50 values for insecticides, whereas  100 µg/bee”, increasing the uncertainty of downstream estimates). Second, insecticides tend to have greater acute toxicity toward insects than fungicides and herbicides (median [IQR] LD50 = 100 [44–129] µg/bee for fungicides, 100 [75–112] µg/bee for herbicides, and 1.36 [0.16–12] µg/bee for insecticides). As a result, insecticides account for > 95% of bee toxic load nationally, even when herbicides and fungicides are included (and even though insecticides make up only 6.5% of pesticides applied on a weight basis). Third, focusing these values on insecticides increases their interpretability, reflecting efforts directed toward insect pest management, rather than a mix of insect, weed, and fungal pest management (which often have distinct dynamics and constraints for farmers).While we chose to include only insecticides in this aggregate value, users are welcome to adjust the workflow to include fungicides and herbicides if desired. To this end, we provide our best estimates for LD50 values for fungicides and herbicides in the USGS dataset (Table 4).Table 4 Data outputs generated by this study.Full size tableReclassification tablesTo generate reclassification tables for the CDL, the pesticide datasets described above were joined by crop group to CDL land use categories. The output of these processes was a set of reclassification tables for combinations of compound, state, and year. Also generated was a set of reclassification tables for aggregate insecticide use for combinations of state and year.Of the 131 land use categories in the CDL, 16 represent two crops grown sequentially in the same year (double crops, found on ~2% of U.S. cropland in 201245), which required a modified accounting in our workflow. Pesticide use practices on double crops are not well described, but one study suggested that pesticide expenditures on soybean grown after wheat were similar to pesticide expenditures in soybean grown alone46. Therefore, we assumed that pesticide use on double crops would be additive (e.g. for a wheat-soybean double crop, the annual pesticide use estimate was generated by summing pesticide use associated with wheat and soybean).Missing values in the reclassification tables resulted from several distinct issues. Some values were missing because a particular crop was not included in the underlying pesticide use survey (e.g. oats was not included in the Kynetec survey), or because the land use category was not a crop at all (e.g. deciduous forest). These two issues were indicated with values of ‘1’ in columns called ‘unsurveyed’ and ‘noncrop,’ respectively. For double crops, a value of 0.5 in the ‘unsurveyed’ column indicates that one of the crops was surveyed and the other was not. For compound-specific datasets, missing values may reflect that a given compound was not used in a state-crop group-year combination. For the aggregate insecticide dataset, even after interpolation there were some missing values, usually when a state had very little area of a particular crop or crop group.Finally, missing data for double crops were treated slightly differently in the aggregate vs. compound-specific reclassification tables. For the aggregate insecticide dataset, estimates for double crops were only included if estimates were available for both crops; otherwise the value was reported as missing. For the compound-specific datasets, estimates for double crops were included if there was an estimate for at least one of the crops, since specific compounds may be used in one crop but not another. More