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    A complex story of groundwater abstraction and ecological threats to the Doñana National Park World Heritage Site

    To the Editor — It is widely appreciated that the world’s wetlands provide important ecosystem services including critical biodiversity, stores of carbon and strong cultural links to people. Yet wetlands are disappearing at an alarming rate due to diversion and abstraction of water, to conversion to agricultural land and to pollution. In response, there has been a major commitment to conserve and restore wetlands worldwide, including more than 2,400 sites on the territories of 172 Contracting Parties of the Convention on Wetlands (Ramsar Sites), covering more than 2.5 million square kilometres. Some wetlands, such as Doñana in southern Spain, are also World Heritage sites to protect their natural and cultural values. The Ramsar Convention and UNESCO World Heritage Convention strongly support the rights of non-governmental organizations to appraise the status and management of designated sites and welcome reports of threats to site integrity. However, such claims should be substantiated by all the available scientific evidence. More

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    Phycobilisome light-harvesting efficiency in natural populations of the marine cyanobacteria Synechococcus increases with depth

    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 
    Goericke, R. & Welschmeyer, N. A. The marine prochlorophyte Prochlorococcus contributes significantly to phytoplankton biomass and primary production in the Sargasso Sea. Deep Res. 40, 2283–2294 (1993).Article 

    Google Scholar 
    Liu, H., Nolla, H. A. & Campbell, L. Prochlorococcus growth rate and contribution to primary production in the equatorial and subtropical North Pacific Ocean. Aquat. Microb. Ecol. 12, 39–47 (1997).Article 

    Google Scholar 
    Huang, S. et al. Novel lineages of prochlorococcus and synechococcus in the global oceans. ISME J. 6, 285–297 (2012).CAS 
    PubMed 
    Article 

    Google Scholar 
    Ting, C. S., Rocap, G., King, J. & Chisholm, S. W. Cyanobacterial photosynthesis in the oceans: the origins and significance of divergent light-harvesting strategies. Trends Microbiol. 10, 134–142 (2002).CAS 
    PubMed 
    Article 

    Google Scholar 
    Barlow, A. Photosynthetic characteristics of phycoerythrin-containing marine Synechococcus spp. Arctic 22, 63–74 (1985).
    Google Scholar 
    Yeh, S. W. et al. Role of phycoerythrin in marine picoplankton synechococcus spp. Science 234, 1422–1424 (1986).CAS 
    PubMed 
    Article 

    Google Scholar 
    Giovannoni, S. J. & Vergin, K. L. Seasonality in ocean microbial communities. Science 335, 671–676 (2012).CAS 
    PubMed 
    Article 

    Google Scholar 
    Carlson, D. F., Fredj, E. & Gildor, H. The annual cycle of vertical mixing and restratification in the Northern Gulf of Eilat/Aqaba (Red Sea) based on high temporal and vertical resolution observations. Deep Res. Part I Oceanogr. Res. Pap. 84, 1–17 (2014).Article 

    Google Scholar 
    Larkum, A. W. D. & Barrett, J. Light-harvesting processes in algae. Adv. Bot. Res. 10, 1–219 (1983).CAS 
    Article 

    Google Scholar 
    Bibby, T. S., Mary, I., Nield, J., Partensky, F. & Barber, J. Low-light-adapted Prochlorococcus species possess specific antennae for each photosystem. Nature 424, 1051–1054 (2003).CAS 
    PubMed 
    Article 

    Google Scholar 
    Bibby, T. S., Nield, J., Chen, M., Larkum, A. W. D. & Barber, J. Structure of a photosystem II supercomplex isolated from Prochloron didemni retaining its chlorophyll a/b light-harvesting system. Proc. Natl Acad. Sci. USA 100, 9050–9054 (2003).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Palenik, B. Chromatic adaptation in marine Synechococcus strains. Appl. Environ. Microbiol. 67, 991–994 (2001).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Kana, T. M. & Glibert, P. M. Effect of irradiances up to 2000 μE m-2 s-1 on marine Synechococcus WH7803-I. Growth, pigmentation, and cell composition. Deep Sea Res. Part A Oceanogr. Res. Pap. 34, 479–495 (1987).CAS 
    Article 

    Google Scholar 
    Six, C., Ratin, M., Marie, D. & Corre, E. Marine Synechococcus picocyanobacteria: light utilization across latitudes. Proc. Natl Acad. Sci. USA 118, 1–11 (2021).Article 
    CAS 

    Google Scholar 
    Perry, M. J., Talbot, M. C. & Alberte, R. S. Photoadaption in marine phytoplankton: response of the photosynthetic unit. Mar. Biol. 62, 91–101 (1981).Mauzerall, D. & Greenbaum, N. L. The absolute size of a photosynthetic unit. BBA Bioenerg. 974, 119–140 (1989).CAS 
    Article 

    Google Scholar 
    Sanfilippo, J. E., Garczarek, L., Partensky, F. & Kehoe, D. M. Chromatic acclimation in cyanobacteria: a diverse and widespread process for optimizing photosynthesis. Annu. Rev. Microbiol. 73, 407–433 (2019).CAS 
    PubMed 
    Article 

    Google Scholar 
    Keren, N. & Paltiel, Y. Photosynthetic energy transfer at the quantum/classical border. Trends Plant Sci. 23, 497–506 (2018).CAS 
    PubMed 
    Article 

    Google Scholar 
    Kolodny, Y. et al. Marine cyanobacteria tune energy transfer efficiency in their light‐harvesting antennae by modifying pigment coupling. FEBS J. https://doi.org/10.1111/febs.15371 (2020).Wientjes, E., Van Amerongen, H. & Croce, R. Quantum yield of charge separation in photosystem II: functional effect of changes in the antenna size upon light acclimation the migration of LHCII from PSII to PSI has. J. Phys. Chem. B 117, 51 (2013).Article 
    CAS 

    Google Scholar 
    Chenu, A. et al. Light adaptation in phycobilisome antennas: influence on the rod length and structural arrangement. J. Phys. Chem. B 121, 9196–9202 (2017).CAS 
    PubMed 
    Article 

    Google Scholar 
    Falkowski, P. G., Lin, H. & Gorbunov, M. Y. What limits photosynthetic energy conversion efficiency in nature? Lessons from the oceans. Philos. Trans. R. Soc. B Biol. Sci. 372, 2–8 (2017).Article 
    CAS 

    Google Scholar 
    Gorbunov, M. Y. & Falkowski, P. G. Using chlorophyll fluorescence to determine the fate of photons absorbed by phytoplankton in the world’s oceans. Ann. Rev. Mar. Sci. 14, 367–393 (2021).
    Google Scholar 
    Govindjee, Hammond, J. H. & Merkelo, H. Primary events, energy transfer, and reactions in photosynthetic events: lifetime of the excited state in vivo: II. Bacteriochlorophyll in photosynthetic bacteria at room temperature. Biophys. J. 12, 809 (1972).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Biggins, J. & Bruce, D. Regulation of excitation energy transfer in organisms containing phycobilins. Photosynth. Res. 20, 1–34 (1989).CAS 
    PubMed 
    Article 

    Google Scholar 
    Roach, T. & Krieger-Liszkay, A. Regulation of photosynthetic electron transport and photoinhibition. Curr. Protein Pept. Sci. 15, 351–362 (2014).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Govindjee, U. Non-Photochemical Quenching and Energy Dissipation in Plants, Algae, and Cyanobacteria (Springer Netherlands, 2014).
    Google Scholar 
    Kirilovsky, D. Photoprotection in cyanobacteria: the orange carotenoid protein (OCP)-related non-photochemical-quenching mechanism. Photosynth. Res. 93, 7–16 (2007).CAS 
    PubMed 
    Article 

    Google Scholar 
    Lin, H. et al. The fate of photons absorbed by phytoplankton in the global ocean. Science 351, 264–267 (2016).Croce, R. & Van Amerongen, H. Light-harvesting and structural organization of photosystem II: from individual complexes to thylakoid membrane. J. Photochem. Photobiol. B Biol. 104, 142–153 (2011).CAS 
    Article 

    Google Scholar 
    Rahav, E. et al. Heterotrophic and autotrophic contribution to dinitrogen fixation in the Gulf of Aqaba. Mar. Ecol. Prog. Ser. 522, 67–77 (2015).CAS 
    Article 

    Google Scholar 
    Reiss, Z. & Hottinger, L. The Gulf of Aqaba (Springer-Verlag, 1984).Genin, A., Lazar, B. & Brenner, S. Vertical mixing and coral death in the red sea following the eruption of Mount Pinatubo. Nature 377, 507–510 (1995).CAS 
    Article 

    Google Scholar 
    Labiosa, R. G., Arrigo, K. R., Genin, A., Monismith, S. G. & Van Dijken, G. The interplay between upwelling and deep convective mixing in determining the seasonal phytoplankton dynamics in the Gulf of Aqaba: evidence from SeaWiFS and MODIS. Limnol. Oceanogr. 48, 2355–2368 (2003).Article 

    Google Scholar 
    Zarubin, M., Lindemann, Y. & Genin, A. The dispersion-confinement mechanism: phytoplankton dynamics and the spring bloom in a deeply-mixing subtropical sea. Prog. Oceanogr. 155, 13–27 (2017).Article 

    Google Scholar 
    Lindell, D. & Post, A. F. Ultraphytoplankton succession is triggered by deep winter mixing in the Gulf of Aqaba (Eilat), Red Sea. Limnol. Oceanogr. 40, 1130–1141 (1995).Article 

    Google Scholar 
    Suggett, D. J. et al. Nitrogen and phosphorus limitation of oceanic microbial growth during spring in the Gulf of Aqaba. Aquat. Microb. Ecol. 56, 227–239 (2009).Article 

    Google Scholar 
    Post, A. F. et al. Long term seasonal dynamics of Synechococcus population structure in the Gulf of Aqaba, Northern Red Sea. Front. Microbiol. 2, 131 (2011).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Sherman, J., Gorbunov, M. Y., Schofield, O. & Falkowski, P. G. Photosynthetic energy conversion efficiency in the West Antarctic Peninsula. Limnol. Oceanogr. 65, 2912–2925 (2020).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Yoo, Y. D. et al. Mixotrophy in the marine red-tide cryptophyte Teleaulax amphioxeia and ingestion and grazing impact of cryptophytes on natural populations of bacteria in Korean coastal waters. Harmful Algae 68, 105–117 (2017).PubMed 
    Article 

    Google Scholar 
    Marie, D., Partensky, F., Jacquet, S. & Vaulot, D. Enumeration and cell cycle analysis of natural populations of marine picoplankton by flow cytometry using the nucleic acid stain SYBR Green I. Appl. Environ. Microbiol. 63, 186–193 (1997).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Brody, S. S. & Rabinowitch, E. Excitation lifetime of photosynthetic pigments in vitro and in vivo. Science 125, 555 (1979).Article 

    Google Scholar 
    Six, C., Thomas, J. C., Brahamsha, B., Lemoine, Y. & Partensky, F. Photophysiology of the marine cyanobacterium Synechococcus sp. WH8102, a new model organism. Aquat. Microb. Ecol. 35, 17–29 (2004).Article 

    Google Scholar 
    Krumova, S. B. et al. Monitoring photosynthesis in individual cells of Synechocystis sp. PCC 6803 on a picosecond timescale. Biophys. J. 99, 2006–2015 (2010).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Tian, L. et al. Picosecond kinetics of light harvesting and photoprotective quenching in wild-type and mutant phycobilisomes isolated from the cyanobacterium Synechocystis PCC 6803. Biophys. J. 102, 1692–1700 (2012).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Bhatti, A. F., Kirilovsky, D., van Amerongen, H. & Wientjes, E. State transitions and photosystems spatially resolved in individual cells of the cyanobacterium Synechococcus elongatus. Plant Physiol. 186, 569–580 (2021).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Adir, N., Bar-Zvi, S. & Harris, D. The amazing phycobilisome. Biochim. Biophys. Acta Bioenerg. 1861, 148047 (2020).Anderson, J. M. & Andersson, B. The dynamic photosynthetic membrane and regulation of solar energy conversion. Trends Biochem. Sci. 13, 351–355 (1988).CAS 
    PubMed 
    Article 

    Google Scholar 
    Mackey, K. R. M., Post, A. F., McIlvin, M. R. & Saito, M. A. Physiological and proteomic characterization of light adaptations in marine Synechococcus. Environ. Microbiol. https://doi.org/10.1111/1462-2920.13744 (2017).Article 
    PubMed 

    Google Scholar 
    Mendoza-Arenas, J. J. et al. Transport enhancement from incoherent coupling between one-dimensional quantum conductors. New J. Phys. 16, 053016 (2014).Campbell, D., Hurry, V., Clarke, A. K., Gustafsson, P. & Quist, G. O. Chlorophyll fluorescence analysis of cyanobacterial photosynthesis and acclimation. Microbiol. Mol. Biol. Rev. 62, 667–683 (1998).Ogawa, T., Misumi, M. & Sonoike, K. Estimation of photosynthesis in cyanobacteria by pulse-amplitude modulation chlorophyll fluorescence: problems and solutions. Photosynth. Res. 133, 63–73 (2017).CAS 
    PubMed 
    Article 

    Google Scholar 
    Kolber, Z. S., Prášil, O. & Falkowski, P. G. Measurements of variable chlorophyll fluorescence using fast repetition rate techniques: defining methodology and experimental protocols. Biochim. Biophys. Acta Bioenerg. 1367, 88–106 (1998).CAS 
    Article 

    Google Scholar 
    Kolber, Z. & Falkowski, P. G. Use of active fluorescence to estimate phytoplankton photosynthesis in situ. Limnol. Oceanogr. 38, 1646–1665 (1993).CAS 
    Article 

    Google Scholar 
    Siegel, D. A. et al. Regional to global assessments of phytoplankton dynamics from the SeaWiFS mission. Remote Sens. Environ. 135, 77–91 (2013).Article 

    Google Scholar 
    Gregg, W. W. & Rousseaux, C. S. Global ocean primary production trends in the modern ocean color satellite record (1998-2015). Environ. Res. Lett. 14, 124011 (2019).Kulk, G. et al. Primary production, an index of climate change in the ocean: satellite-based estimates over two decades. Remote Sens. 12, 826 (2020).Van De Poll, W. H. et al. Phytoplankton chlorophyll a biomass, composition, and productivity along a temperature and stratification gradient in the northeast Atlantic Ocean. Biogeosciences 10, 4227–4240 (2013).Article 
    CAS 

    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, 1–16 (2019).Article 

    Google Scholar 
    Capotondi, A., Alexander, M. A., Bond, N. A., Curchitser, E. N. & Scott, J. D. Enhanced upper ocean stratification with climate change in the CMIP3 models. J. Geophys. Res. Ocean. 117, 1–23 (2012).Article 

    Google Scholar 
    Li, G. et al. Increasing ocean stratification over the past half-century. Nat. Clim. Chang. 10, 1116–1123 (2020).Article 

    Google Scholar 
    Kolodny, Y. et al. Tuning quantum dots coupling using organic linkers with different vibrational modes. J. Phys. Chem. C 124, 16159–16165 (2020).CAS 
    Article 

    Google Scholar  More

  • in

    Root exudate composition reflects drought severity gradient in blue grama (Bouteloua gracilis)

    Reichstein, M. et al. Climate extremes and the carbon cycle. Nature 500, 287–295 (2013).ADS 
    CAS 
    PubMed 
    Article 

    Google Scholar 
    IPCC, 2018. Summary for Policymakers. in Global warming of 1.5°C. An IPCC Special Report on the impacts of global warming of 1.5°C above pre-industrial levels and related global greenhouse gas emission pathways, in the context of strengthening the global response to the threat of climate change, sustainable development, and efforts to eradicate poverty (eds. Masson-Delmotte, V. et al.) 32 (World Meteorological Organization, 2018).Kozlowski, T. Carbohydrate sources and sinks in woody plants. Bot. Rev. 58, 107–222 (1992).Article 

    Google Scholar 
    Hartmann, H., Bahn, M., Carbone, M. & Richardson, A. D. Plant carbon allocation in a changing world–challenges and progress: Introduction to a Virtual Issue on carbon allocation. New Phytol. 227, 981–988 (2020).PubMed 
    Article 

    Google Scholar 
    Shahzad, T. et al. Contribution of exudates, arbuscular mycorrhizal fungi and litter depositions to the rhizosphere priming effect induced by grassland species. Soil Biol. Biochem. 80, 146–155 (2015).CAS 
    Article 

    Google Scholar 
    Williams, A. & de Vries, F. T. Plant root exudation under drought: implications for ecosystem functioning. New Phytol. 225, 1899–1905 (2020).PubMed 
    Article 

    Google Scholar 
    Dijkstra, F. A., Zhu, B. & Cheng, W. Root effects on soil organic carbon: a double-edged sword. New Phytol. 230, 60–65 (2021).CAS 
    PubMed 
    Article 

    Google Scholar 
    Bakker, P. A. H. M., Pieterse, C. M. J., de Jonge, R. & Berendsen, R. L. The soil-borne legacy. Cell 172, 1178–1180 (2018).CAS 
    PubMed 
    Article 

    Google Scholar 
    Mendes, R., Garbeva, P. & Raaijmakers, J. M. The rhizosphere microbiome: significance of plant beneficial, plant pathogenic, and human pathogenic microorganisms. FEMS Microbiol. Rev. 37, 634–663 (2013).CAS 
    PubMed 
    Article 

    Google Scholar 
    Roberson, E. B. & Firestone, M. K. Relationship between desiccation and exopolysaccharide production in a soil Pseudomonas sp. Appl. Environ. Microbiol. 58, 1284–1291 (1992).ADS 
    CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Preece, C. & Peñuelas, J. Rhizodeposition under drought and consequences for soil communities and ecosystem resilience. Plant Soil 409, 1–17 (2016).CAS 
    Article 

    Google Scholar 
    Ulrich, D. E. M. et al. Plant-microbe interactions before drought influence plant physiological responses to subsequent severe drought. Sci. Rep. 9, 249 (2019).ADS 
    PubMed 
    PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Oleghe, E., Naveed, M., Baggs, E. M. & Hallett, P. D. Plant exudates improve the mechanical conditions for root penetration through compacted soils. Plant Soil 421, 19–30 (2017).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Clarholm, M., Skyllberg, U. & Rosling, A. Organic acid induced release of nutrients from metal-stabilized soil organic matter—The unbutton model. Soil Biol. Biochem. 84, 168–176 (2015).CAS 
    Article 

    Google Scholar 
    Liu, W., Xu, G., Bai, J. & Duan, B. Effects of warming and oxalic acid addition on plant–microbial competition in Picea brachytyla. Can. J. For. Res. https://doi.org/10.1139/cjfr-2020-0019 (2021).Article 

    Google Scholar 
    Keiluweit, M. et al. Mineral protection of soil carbon counteracted by root exudates. Nat. Clim. Change 5, 588–595 (2015).ADS 
    CAS 
    Article 

    Google Scholar 
    Zhalnina, K. et al. Dynamic root exudate chemistry and microbial substrate preferences drive patterns in rhizosphere microbial community assembly. Nat. Microbiol. 1, 470–480 (2018).Article 
    CAS 

    Google Scholar 
    Canarini, A., Kaiser, C., Merchant, A., Richter, A. & Wanek, W. Root exudation of primary metabolites: Mechanisms and their roles in plant responses to environmental stimuli. Front. Plant Sci. 10, 157 (2019).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Worchel, E. R., Giauque, H. E. & Kivlin, S. N. Fungal symbionts alter plant drought response. Microb. Ecol. 65, 671–678 (2013).CAS 
    PubMed 
    Article 

    Google Scholar 
    Sasse, J., Martinoia, E. & Northen, T. Feed your friends: Do plant exudates shape the root microbiome?. Trends Plant Sci. 23, 25–41 (2018).CAS 
    PubMed 
    Article 

    Google Scholar 
    Shade, A. & Stopnisek, N. Abundance-occupancy distributions to prioritize plant core microbiome membership. Curr. Opin. Microbiol. 49, 50–58 (2019).PubMed 
    Article 

    Google Scholar 
    Zhu, B. et al. Rhizosphere priming effects on soil carbon and nitrogen mineralization. Soil Biol. Biochem. 76, 183–192 (2014).CAS 
    Article 

    Google Scholar 
    Wang, X., Tang, C., Severi, J., Butterly, C. R. & Baldock, J. A. Rhizosphere priming effect on soil organic carbon decomposition under plant species differing in soil acidification and root exudation. New Phytol. 211, 864–873 (2016).CAS 
    PubMed 
    Article 

    Google Scholar 
    Henry, A., Doucette, W., Norton, J. & Bugbee, B. Changes in crested wheatgrass root exudation caused by flood, drought, and nutrient stress. J. Environ. Qual. 36, 904–912 (2007).CAS 
    PubMed 
    Article 

    Google Scholar 
    Calvo, O. C. et al. Atmospheric CO2 enrichment and drought stress modify root exudation of barley. Glob. Change Biol. 23, 1292–1304 (2017).ADS 
    Article 

    Google Scholar 
    Bais, H. P., Weir, T. L., Perry, L. G., Gilroy, S. & Vivanco, J. M. The role of root exudates in rhizosphere interactions with plants and other organisms. Annu. Rev. Plant Biol. 57, 233–266 (2006).CAS 
    PubMed 
    Article 

    Google Scholar 
    Naylor, D. & Coleman-Derr, D. Drought stress and root-associated bacterial communities. Front. Plant Sci. 8, 2223 (2018).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Karst, J., Gaster, J., Wiley, E. & Landhäusser, S. M. Stress differentially causes roots of tree seedlings to exude carbon. Tree Physiol. 37, 154–164 (2017).CAS 
    PubMed 

    Google Scholar 
    Preece, C., Farré-Armengol, G., Llusià, J. & Peñuelas, J. Thirsty tree roots exude more carbon. Tree Physiol. 38, 690–695 (2018).CAS 
    PubMed 
    Article 

    Google Scholar 
    Brunner, I., Herzog, C., Dawes, M. A., Arend, M. & Sperisen, C. How tree roots respond to drought. Front. Plant Sci. 6, 547 (2015).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Gargallo-Garriga, A. et al. Root exudate metabolomes change under drought and show limited capacity for recovery. Sci. Rep. 8, 12696 (2018).ADS 
    PubMed 
    PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Muller, B. et al. Water deficits uncouple growth from photosynthesis, increase C content, and modify the relationships between C and growth in sink organs. J. Exp. Bot. 62, 1715–1729 (2011).CAS 
    PubMed 
    Article 

    Google Scholar 
    Dong, X., Patton, J., Wang, G., Nyren, P. & Peterson, P. Effect of drought on biomass allocation in two invasive and two native grass species dominating the mixed-grass prairie. Grass Forage Sci. 69, 160–166 (2014).Article 

    Google Scholar 
    Sevanto, S. & Dickman, L. T. Where does the carbon go?—Plant carbon allocation under climate change. Tree Physiol. 35, 581–584 (2015).CAS 
    PubMed 
    Article 

    Google Scholar 
    Qi, Y., Wei, W., Chen, C. & Chen, L. Plant root-shoot biomass allocation over diverse biomes: A global synthesis. Glob. Ecol. Conserv. 18, e00606 (2019).Article 

    Google Scholar 
    Ruehr, N. K., Grote, R., Mayr, S. & Arneth, A. Beyond the extreme: Recovery of carbon and water relations in woody plants following heat and drought stress. Tree Physiol. 39, 1285–1299 (2019).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Farrar, J. & Jones, D. The control of carbon acquisition by roots. New Phytol. 147, 43–53 (2000).CAS 
    Article 

    Google Scholar 
    Prescott, C. E. et al. Surplus carbon drives allocation and plant-soil interactions. Trends Ecol. Evol. 35, 1110–1118 (2020).PubMed 
    Article 

    Google Scholar 
    Costello, D. Important species of the major forage types in Colorado and Wyoming. Ecol. Monogr. 14, 107–134 (1944).Article 

    Google Scholar 
    Hunt, H. W. et al. Simulation model for the effects of climate change on temperate grassland ecosystems. Ecol. Model. 53, 205–246 (1991).Article 

    Google Scholar 
    Follett, R. F., Stewart, C. E., Pruessner, E. G. & Kimble, J. M. Effects of climate change on soil carbon and nitrogen storage in the US Great Plains. J. Soil Water Conserv. 67, 331–342 (2012).Article 

    Google Scholar 
    Belovsky, G. E. & Slade, J. B. Climate change and primary production: Forty years in a bunchgrass prairie. PLoS ONE 15, e0243496 (2020).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Kuzyakov, Y. & Domanski, G. Carbon input by plants into the soil. Review. J. Plant Nutr. Soil Sci. 163, 421–431 (2000).CAS 
    Article 

    Google Scholar 
    Knapp, A. K. & Smith, M. D. Variation among biomes in temporal dynamics of aboveground primary production. Science 291, 481–484 (2001).ADS 
    CAS 
    PubMed 
    Article 

    Google Scholar 
    Peng, J., Dong, W., Yuan, W. & Zhang, Y. Responses of grassland and forest to temperature and precipitation changes in Northeast China. Adv. Atmos. Sci. 29, 1063–1077 (2012).Article 

    Google Scholar 
    Porras-Alfaro, A., Herrera, J., Natvig, D. O. & Sinsabaugh, R. L. Effect of long-term nitrogen fertilization on mycorrhizal fungi associated with a dominant grass in a semiarid grassland. Plant Soil 296, 65–75 (2007).CAS 
    Article 

    Google Scholar 
    Bokhari, U. G., Coleman, D. C. & Rubink, A. Chemistry of root exudates and rhizosphere soils of prairie plants. Can. J. Bot. 57, 1473–1477 (1979).CAS 
    Article 

    Google Scholar 
    Dormaar, J. F., Tovell, B. C. & Willms, W. D. Fingerprint composition of seedling root exudates of selected grasses. Rangel. Ecol. Manag. J. Range Manag. Arch. 55, 420–423 (2002).
    Google Scholar 
    Harris, S. A. Grasses (Reaktion Books, 2014).
    Google Scholar 
    Hoffman, A. M., Bushey, J. A., Ocheltree, T. W. & Smith, M. D. Genetic and functional variation across regional and local scales is associated with climate in a foundational prairie grass. New Phytol. 227, 352–364 (2020).PubMed 
    Article 

    Google Scholar 
    Gould, F. W. Grasses of the southwestern United States. (1951).Smith, S. E., Haferkamp, M. R. & Voigt, P. W. Gramas. in Warm-Season (C4) Grasses 975–1002 (Wiley, 2004). https://doi.org/10.2134/agronmonogr45.c30.Jackson, R. D., Paine, L. K. & Woodis, J. E. Persistence of native C4 grasses under high-intensity, short-duration summer bison grazing in the eastern tallgrass prairie. Restor. Ecol. 18, 65–73 (2010).Article 

    Google Scholar 
    Kim, S., Williams, A., Kiniry, J. R. & Hawkes, C. V. Simulating diverse native C4 perennial grasses with varying rainfall. J. Arid Environ. 134, 97–103 (2016).ADS 
    Article 

    Google Scholar 
    Sala, A., Fouts, W. & Hoch, G. Carbon storage in trees: Does relative carbon supply decrease with tree size? In Size-and age-related changes in tree structure and function 287–306 (Springer, 2011).Badri, D. V. & Vivanco, J. M. Regulation and function of root exudates. Plant Cell Environ. 32, 666–681 (2009).CAS 
    PubMed 
    Article 

    Google Scholar 
    Yin, H. et al. Enhanced root exudation stimulates soil nitrogen transformations in a subalpine coniferous forest under experimental warming. Glob. Change Biol. 19, 2158–2167 (2013).ADS 
    Article 

    Google Scholar 
    Drigo, B. et al. Shifting carbon flow from roots into associated microbial communities in response to elevated atmospheric CO2. Proc. Natl. Acad. Sci. 107, 10938–10942 (2010).ADS 
    CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Eisenhauer, N. et al. Root biomass and exudates link plant diversity with soil bacterial and fungal biomass. Sci. Rep. 7, 1–8 (2017).CAS 
    Article 

    Google Scholar 
    Karlowsky, S. et al. Drought-induced accumulation of root exudates supports post-drought recovery of microbes in mountain grassland. Front. Plant Sci. 9, 1593 (2018).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Zwetsloot, M. J., Kessler, A. & Bauerle, T. L. Phenolic root exudate and tissue compounds vary widely among temperate forest tree species and have contrasting effects on soil microbial respiration. New Phytol. 218, 530–541 (2018).CAS 
    PubMed 
    Article 

    Google Scholar 
    Zhen, W. & Schellenberg, M. P. Drought and N addition in the greenhouse experiment: blue grama and western wheatgrass. J. Agric. Sci. Technol. B 2, 29–37 (2012).
    Google Scholar 
    Bahn, M. et al. Responses of belowground carbon allocation dynamics to extended shading in mountain grassland. New Phytol. 198, 116–126 (2013).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Allen, M. F., Smith, W. K., Moore, T. S. & Christensen, M. Comparative water relations and photosynthesis of mycorrhizal and non-mycorrhizal bouteloua gracilis hbk lag ex steud. New Phytol. 88, 683–693 (1981).Article 

    Google Scholar 
    Weaver, J. E. Summary and interpretation of underground development in natural grassland communities. Ecol. Monogr. 28, 55–78 (1958).Article 

    Google Scholar 
    Carvalhais, L. C. et al. Linking plant nutritional status to plant-microbe interactions. PLoS ONE 8, e68555 (2013).ADS 
    CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Dignac, M.-F. & Rumpel, C. Organic matter stabilization and ecosystem functions: proceedings of the fourth conference on the mechanisms of organic matter stabilization and destabilization (SOM-2010, Presqu’île de Giens, France). Biogeochemistry 112, 1–6 (2013).Article 

    Google Scholar 
    Slama, I., Abdelly, C., Bouchereau, A., Flowers, T. & Savouré, A. Diversity, distribution and roles of osmoprotective compounds accumulated in halophytes under abiotic stress. Ann. Bot. 115, 433–447 (2015).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Khaleghi, A. et al. Morphological, physiochemical and antioxidant responses of Maclura pomifera to drought stress. Sci. Rep. 9, 19250 (2019).ADS 
    CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    de Werra, P., Péchy-Tarr, M., Keel, C. & Maurhofer, M. Role of gluconic acid production in the regulation of biocontrol traits of pseudomonas fluorescens CHA0. Appl. Environ. Microbiol. 75, 4162–4174 (2009).ADS 
    PubMed 
    PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Vyas, P. & Gulati, A. Organic acid production in vitro and plant growth promotion in maize under controlled environment by phosphate-solubilizing fluorescent Pseudomonas. BMC Microbiol. 9, 174 (2009).PubMed 
    PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Pang, Z. et al. Differential response to warming of the uptake of nitrogen by plant species in non-degraded and degraded alpine grasslands. J. Soils Sediments 19, 2212–2221 (2019).CAS 
    Article 

    Google Scholar 
    Blum, A. & Ebercon, A. Genotypic responses in sorghum to drought stress. III. Free proline accumulation and drought resistance1. Crop Sci. 16, 428–431 (1976).CAS 
    Article 

    Google Scholar 
    Verbruggen, N. & Hermans, C. Proline accumulation in plants: a review. Amino Acids 35, 753–759 (2008).CAS 
    PubMed 
    Article 

    Google Scholar 
    Chun, S. C., Paramasivan, M. & Chandrasekaran, M. Proline accumulation influenced by osmotic stress in arbuscular mycorrhizal symbiotic plants. Front. Microbiol. 9, 2525 (2018).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Fu, Y., Ma, H., Chen, S., Gu, T. & Gong, J. Control of proline accumulation under drought via a novel pathway comprising the histone methylase CAU1 and the transcription factor ANAC055. J. Exp. Bot. 69, 579–588 (2018).CAS 
    PubMed 
    Article 

    Google Scholar 
    Dien, D. C., Mochizuki, T. & Yamakawa, T. Effect of various drought stresses and subsequent recovery on proline, total soluble sugar and starch metabolisms in Rice (Oryza sativa L.) varieties. Plant Prod. Sci. 22, 530–545 (2019).CAS 
    Article 

    Google Scholar 
    Traoré, O., Groleau-Renaud, V., Plantureux, S., Tubeileh, A. & Boeuf-Tremblay, V. Effect of root mucilage and modelled root exudates on soil structure. Eur. J. Soil Sci. 51, 575–581 (2000).
    Google Scholar 
    Harun, S., Abdullah-Zawawi, M.-R., A-Rahman, M. R. A., Muhammad, N. A. N. & Mohamed-Hussein, Z.-A. SuCComBase: A manually curated repository of plant sulfur-containing compounds. Database J. Biol. Databases Curation 219, 21 (2019).
    Google Scholar 
    Steinauer, K., Chatzinotas, A. & Eisenhauer, N. Root exudate cocktails: the link between plant diversity and soil microorganisms?. Ecol. Evol. 6, 7387–7396 (2016).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Kraus, T. E. C., Dahlgren, R. A. & Zasoski, R. J. Tannins in nutrient dynamics of forest ecosystems—A review. Plant Soil 256, 41–66 (2003).CAS 
    Article 

    Google Scholar 
    Madritch, M., Cavender-Bares, J., Hobbie, S. E. & Townsend, P. A. Linking foliar traits to belowground processes. In Remote Sensing of Plant Biodiversity (eds Cavender-Bares, J. et al.) 173–197 (Springer, 2020). https://doi.org/10.1007/978-3-030-33157-3_8.Chapter 

    Google Scholar 
    Shaw, L. J., Morris, P. & Hooker, J. E. Perception and modification of plant flavonoid signals by rhizosphere microorganisms. Environ. Microbiol. 8, 1867–1880 (2006).CAS 
    PubMed 
    Article 

    Google Scholar 
    Ray, S. et al. Modulation in phenolic root exudate profile of Abelmoschus esculentus expressing activation of defense pathway. Microbiol. Res. 207, 100–107 (2018).CAS 
    PubMed 
    Article 

    Google Scholar 
    Walker, T. S., Bais, H. P., Grotewold, E. & Vivanco, J. M. Root exudation and rhizosphere biology. Plant Physiol. 132, 44–51 (2003).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Popa, V. I., Dumitru, M., Volf, I. & Anghel, N. Lignin and polyphenols as allelochemicals. Ind. Crops Prod. 27, 144–149 (2008).CAS 
    Article 

    Google Scholar 
    Badri, D. V., Chaparro, J. M., Zhang, R., Shen, Q. & Vivanco, J. M. Application of natural blends of phytochemicals derived from the root exudates of Arabidopsis to the soil reveal that phenolic-related compounds predominantly modulate the soil microbiome. J. Biol. Chem. 288, 4502–4512 (2013).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    el Haichar, F. Z., Santaella, C., Heulin, T. & Achouak, W. Root exudates mediated interactions belowground. Soil Biol. Biochem. 77, 69–80 (2014).CAS 
    Article 

    Google Scholar 
    Northup, R. R., Yu, Z., Dahlgren, R. A. & Vogt, K. A. Polyphenol control of nitrogen release from pine litter. Nature 377, 227 (1995).ADS 
    CAS 
    Article 

    Google Scholar 
    Schmidt-Rohr, K., Mao, J.-D. & Olk, D. Nitrogen-bonded aromatics in soil organic matter and their implications for a yield decline in intensive rice cropping. Proc. Natl. Acad. Sci. 101, 6351–6354 (2004).ADS 
    CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Salminen, J. & Karonen, M. Chemical ecology of tannins and other phenolics: We need a change in approach. Funct. Ecol. 25, 325–338 (2011).Article 

    Google Scholar 
    Ghanbary, E. et al. Drought and pathogen effects on survival, leaf physiology, oxidative damage, and defense in two middle eastern oak species. Forests 12, 247 (2021).Article 

    Google Scholar 
    Baetz, U. & Martinoia, E. Root exudates: the hidden part of plant defense. Trends Plant Sci. 19, 90–98 (2014).CAS 
    PubMed 
    Article 

    Google Scholar 
    Fan, T.W.-M., Lane, A. N., Pedler, J., Crowley, D. & Higashi, R. M. Comprehensive analysis of organic ligands in whole root exudates using nuclear magnetic resonance and gas chromatography–mass spectrometry. Anal. Biochem. 251, 57–68 (1997).CAS 
    PubMed 
    Article 

    Google Scholar 
    Qiao, M. et al. Analysis of the phenolic compounds in root exudates produced by a subalpine coniferous species as responses to experimental warming and nitrogen fertilisation. Chem. Ecol. 30, 555–565 (2014).Article 
    CAS 

    Google Scholar 
    Hussein, R. A. & El-Anssary, A. A. Plants Secondary Metabolites: The Key Drivers of the Pharmacological Actions of Medicinal Plants. Herbal Medicine (IntechOpen, 2018). https://doi.org/10.5772/intechopen.76139.Oburger, E. & Jones, D. L. Sampling root exudates–mission impossible?. Rhizosphere 6, 116–133 (2018).Article 

    Google Scholar 
    Vives-Peris, V., de Ollas, C., Gómez-Cadenas, A. & Pérez-Clemente, R. M. Root exudates: From plant to rhizosphere and beyond. Plant Cell Rep. 39, 3–17 (2020).CAS 
    PubMed 
    Article 

    Google Scholar 
    Chaparro, J. M., Badri, D. V. & Vivanco, J. M. Rhizosphere microbiome assemblage is affected by plant development. ISME J. 8, 790–803 (2014).CAS 
    PubMed 
    Article 

    Google Scholar 
    Mönchgesang, S. et al. Natural variation of root exudates in Arabidopsis thaliana-linking metabolomic and genomic data. Sci. Rep. 6, 1–1 (2016).Article 
    CAS 

    Google Scholar 
    Sandnes, A., Eldhuset, T. D. & Wollebæk, G. Organic acids in root exudates and soil solution of Norway spruce and silver birch. Soil Biol. Biochem. 37, 259–269 (2005).CAS 
    Article 

    Google Scholar 
    Prescott, C. E. & Grayston, S. J. Tree species influence on microbial communities in litter and soil: Current knowledge and research needs. For. Ecol. Manag. 309, 19–27 (2013).Article 

    Google Scholar 
    Miao, Y., Lv, J., Huang, H., Cao, D. & Zhang, S. Molecular characterization of root exudates using Fourier transform ion cyclotron resonance mass spectrometry. J. Environ. Sci. 98, 22–30 (2020).Article 

    Google Scholar 
    Grayston, S. J., Vaughan, D. & Jones, D. Rhizosphere carbon flow in trees, in comparison with annual plants: The importance of root exudation and its impact on microbial activity and nutrient availability. Appl. Soil Ecol. 5, 29–56 (1997).Article 

    Google Scholar 
    Phillips, R. P., Erlitz, Y., Bier, R. & Bernhardt, E. S. New approach for capturing soluble root exudates in forest soils. Funct. Ecol. 22, 990–999 (2008).Article 

    Google Scholar 
    Ulrich, D. E. M., Sevanto, S., Peterson, S., Ryan, M. & Dunbar, J. Effects of soil microbes on functional traits of loblolly pine (Pinus taeda) seedling families from contrasting climates. Front. Plant Sci. 10, 1643 (2020).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Preece, C., Farré-Armengol, G., Llusià, J. & Peñuelas, J. Thirsty tree roots exude more carbon. Tree Physiol https://doi.org/10.1093/treephys/tpx163 (2018).Article 
    PubMed 

    Google Scholar 
    Nguyen, C. Rhizodeposition of organic C by plants: Mechanisms and controls. Agronomie 23, 375–396 (2003).CAS 
    Article 

    Google Scholar 
    Viant, M. R. & Sommer, U. Mass spectrometry based environmental metabolomics: A primer and review. Metabolomics 9, 144–158 (2013).CAS 
    Article 

    Google Scholar 
    Fiehn, O. Metabolomics by gas chromatography–mass spectrometry: Combined targeted and untargeted profiling. Curr. Protoc. Mol. Biol. 114, 30.4.1-30.4.32 (2016).Article 

    Google Scholar 
    Hiller, K. et al. MetaboliteDetector: comprehensive analysis tool for targeted and nontargeted GC/MS based metabolome analysis. Anal. Chem. 81, 3429–3439 (2009).CAS 
    PubMed 
    Article 

    Google Scholar 
    Kind, T. et al. FiehnLib: Mass spectral and retention index libraries for metabolomics based on quadrupole and time-of-flight gas chromatography/mass spectrometry. Anal. Chem. 81, 10038–10048 (2009).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Delaglio, F. et al. NMRPipe: A multidimensional spectral processing system based on UNIX pipes. J. Biomol. NMR 6, 277–293 (1995).CAS 
    PubMed 
    Article 

    Google Scholar 
    Ulrich, E. L. et al. BioMagResBank. Nucleic Acids Res. 36, D402–D408 (2008).CAS 
    PubMed 
    Article 

    Google Scholar 
    Dittmar, T., Koch, B., Hertkorn, N. & Kattner, G. A simple and efficient method for the solid-phase extraction of dissolved organic matter (SPE-DOM) from seawater. Limnol. Oceanogr. Methods 6, 230–235 (2008).CAS 
    Article 

    Google Scholar 
    Tfaily, M. M., Hodgkins, S., Podgorski, D. C., Chanton, J. P. & Cooper, W. T. Comparison of dialysis and solid-phase extraction for isolation and concentration of dissolved organic matter prior to Fourier transform ion cyclotron resonance mass spectrometry. Anal. Bioanal. Chem. 404, 447–457 (2012).CAS 
    PubMed 
    Article 

    Google Scholar 
    Tolić, N. et al. Formularity: Software for automated formula assignment of natural and other organic matter from ultrahigh-resolution mass spectra. Anal. Chem. 89, 12659–12665 (2017).PubMed 
    Article 
    CAS 

    Google Scholar 
    Hothorn, T., Bretz, F. & Westfall, P. Simultaneous inference in general parametric models. Biom. J. 50, 346–363 (2008).MathSciNet 
    PubMed 
    MATH 
    Article 

    Google Scholar 
    Pang, Z. et al. MetaboAnalyst 5.0: Narrowing the gap between raw spectra and functional insights. Nucleic Acids Res. 49, W388–W396 (2021).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Tfaily, M. M. et al. Vertical stratification of peat pore water dissolved organic matter composition in a peat bog in Northern Minnesota. J. Geophys. Res. Biogeosci. 123, 479–494 (2018).CAS 
    Article 

    Google Scholar 
    Van Krevelen, D. Graphical-statistical method for the study of structure and reaction processes of coal. Fuel 29, 269–284 (1950).
    Google Scholar 
    Pett-Ridge, J. et al. Rhizosphere carbon turnover from cradle to grave: The role of microbe–plant interactions. in Rhizosphere Biology: Interactions Between Microbes and Plants 51–73 (Springer, 2021).Kuo, Y.-H., Lambein, F., Ikegami, F. & Parijs, R. V. Isoxazolin-5-ones and amino acids in root exudates of pea and sweet pea seedlings. Plant Physiol. 70, 1283–1289 (1982).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Yoon, M.-Y. et al. Antifungal activity of benzoic acid from bacillus subtilis GDYA-1 against fungal phytopathogens. Res. Plant Dis. 18, 109–116 (2012).CAS 
    Article 

    Google Scholar 
    Neumann, G. et al. Root exudation and root development of lettuce (Lactuca sativa L. cv. Tizian) as affected by different soils. Front. Microbiol. 5, 2 (2014).CAS 
    PubMed 
    PubMed Central 

    Google Scholar 
    Servillo, L. et al. Betaines and related ammonium compounds in chestnut (Castanea sativa Mill.). Food Chem. 196, 1301–1309 (2016).CAS 
    PubMed 
    Article 

    Google Scholar 
    Guo, J. The influence of tall fescue cultivar and endophyte status on root exudate chemistry and rhizosphere processes. (2014).Loewus, F. A. & Murthy, P. P. N. myo-Inositol metabolism in plants. Plant Sci. 150, 1–19 (2000).CAS 
    Article 

    Google Scholar 
    Valluru, R. & Van den Ende, W. Myo-inositol and beyond—Emerging networks under stress. Plant Sci. 181, 387–400 (2011).CAS 
    PubMed 
    Article 

    Google Scholar 
    Allard-Massicotte, R. et al. Bacillus subtilis early colonization of Arabidopsis thaliana roots involves multiple chemotaxis receptors. MBio 7, e01664-16 (2016).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Muthuramalingam, P. et al. Global analysis of threonine metabolism genes unravel key players in rice to improve the abiotic stress tolerance. Sci. Rep. 8, 9270 (2018).ADS 
    PubMed 
    PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Chahed, A. et al. The rare sugar tagatose differentially inhibits the growth of Phytophthora infestans and Phytophthora cinnamomi by interfering with mitochondrial processes. Front. Microbiol. 11, 128 (2020).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Mochizuki, S. et al. The rare sugar d-tagatose protects plants from downy mildews and is a safe fungicidal agrochemical. Commun. Biol. 3, 1–15 (2020).Article 
    CAS 

    Google Scholar 
    Chapin III, F. S. The cost of tundra plant structures: evaluation of concepts and currencies. The American Naturalist, 133(1), 1–19 (1989). More

  • in

    Farm size affects the use of agroecological practices on organic farms in the United States

    Wanger, T. C. et al. Integrating agroecological production in a robust post-2020 Global Biodiversity Framework. Nat. Ecol. Evol. 4, 1150–1152 (2020).PubMed 
    Article 

    Google Scholar 
    Newbold, T. et al. Global effects of land use on local terrestrial biodiversity. Nature 520, 45–50 (2015).CAS 
    PubMed 
    Article 

    Google Scholar 
    Amundson, R. et al. Soil and human security in the 21st century. Science 348, 1261071 (2015).PubMed 
    Article 
    CAS 

    Google Scholar 
    Robertson, G. P. & Vitousek, P. M. Nitrogen in agriculture: balancing the cost of an essential resource. Annu. Rev. Environ. Resour. 34, 97–125 (2009).Article 

    Google Scholar 
    Campbell, B. M. et al. Agriculture production as a major driver of the Earth system exceeding planetary boundaries. Ecol. Soc. 22, 8 (2017).Article 

    Google Scholar 
    Kremen, C. & Merenlender, A. M. Landscapes that work for biodiversity and people. Science 362, eaau6020 (2018).PubMed 
    Article 
    CAS 

    Google Scholar 
    Krebs, A. V. The Corporate Reapers: The Book of Agribusiness (Essential Books, 1992).Mortensen, D. A. & Smith, R. G. Confronting barriers to cropping system diversification. Front. Sustain. Food Syst. 4, 564197 (2020).Article 

    Google Scholar 
    2017 Census of Agriculture – 2019 Organic Survey (USDA NASS, 2020); https://www.nass.usda.gov/Publications/AgCensus/2017/index.phpFarms and Land in Farms 2019 Summary (USDA NASS, 2020); https://usda.library.cornell.edu/concern/publications/5712m6524Reganold, J. P. & Wachter, J. M. Organic agriculture in the twenty-first century. Nat. Plants 2, 15221 (2016).PubMed 
    Article 

    Google Scholar 
    Muller, A. et al. Strategies for feeding the world more sustainably with organic agriculture. Nat. Commun. 8, 1290 (2017).PubMed 
    PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Lori, M., Symnaczik, S., Mäder, P., De Deyn, G. & Gattinger, A. Organic farming enhances soil microbial abundance and activity—a meta-analysis and meta-regression. PLoS ONE 12, e0180442 (2017).PubMed 
    PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Seufert, V. & Ramankutty, N. Many shades of gray—the context-dependent performance of organic agriculture. Sci. Adv. 3, e1602638 (2017).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    USDA AMS. National Organic Program; Final Rule, 7 CFR Part 205. Fed. Regist. 65, 80547–80684 (2000).
    Google Scholar 
    Wezel, A. et al. Agroecology as a science, a movement and a practice. A review. Agron. Sustain. Dev. 29, 503–515 (2009).Article 

    Google Scholar 
    Tamburini, G. et al. Agricultural diversification promotes multiple ecosystem services without compromising yield. Sci. Adv. 6, eaba1715 (2020).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Kleijn, D. et al. Ecological intensification: bridging the gap between science and practice. Trends Ecol. Evol. 34, 154–166 (2019).PubMed 
    Article 

    Google Scholar 
    Bommarco, R., Kleijn, D. & Potts, S. G. Ecological intensification: harnessing ecosystem services for food security. Trends Ecol. Evol. 28, 230–238 (2013).PubMed 
    Article 

    Google Scholar 
    Kremen, C. & Miles, A. Ecosystem services in biologically diversified versus conventional farming systems: benefits, externalities, and trade-offs. Ecol. Soc. 17, 40 (2012).
    Google Scholar 
    Bowles, T. M. et al. Long-term evidence shows that crop-rotation diversification increases agricultural resilience to adverse growing conditions in North America. One Earth 2, 284–293 (2020).Article 

    Google Scholar 
    Wood, S. A. et al. Functional traits in agriculture: agrobiodiversity and ecosystem services. Trends Ecol. Evol. 30, 531–539 (2015).PubMed 
    Article 

    Google Scholar 
    Faucon, M.-P., Houben, D. & Lambers, H. Plant functional traits: soil and ecosystem services. Trends Plant Sci. 22, 385–394 (2017).CAS 
    PubMed 
    Article 

    Google Scholar 
    D’Hose, T. et al. The positive relationship between soil quality and crop production: a case study on the effect of farm compost application. Appl. Soil Ecol. 75, 189–198 (2014).Article 

    Google Scholar 
    Fließbach, A., Oberholzer, H.-R., Gunst, L. & Mäder, P. Soil organic matter and biological soil quality indicators after 21 years of organic and conventional farming. Agric. Ecosyst. Environ. 118, 273–284 (2007).Article 

    Google Scholar 
    Francioli, D. et al. Mineral vs. organic amendments: microbial community structure, activity and abundance of agriculturally relevant microbes are driven by long-term fertilization strategies. Front. Microbiol. 7, 1446 (2016).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Nunes, M. R., Karlen, D. L., Veum, K. S., Moorman, T. B. & Cambardella, C. A. Biological soil health indicators respond to tillage intensity: a US meta-analysis. Geoderma 369, 114335 (2020).CAS 
    Article 

    Google Scholar 
    Blanco-Canqui, H. & Ruis, S. J. No-tillage and soil physical environment. Geoderma 326, 164–200 (2018).Article 

    Google Scholar 
    Willekens, K., Vandecasteele, B., Buchan, D. & De Neve, S. Soil quality is positively affected by reduced tillage and compost in an intensive vegetable cropping system. Appl. Soil Ecol. 82, 61–71 (2014).Article 

    Google Scholar 
    Dainese, M. et al. A global synthesis reveals biodiversity-mediated benefits for crop production. Sci. Adv. 5, eaax0121 (2019).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Albrecht, M. et al. The effectiveness of flower strips and hedgerows on pest control, pollination services and crop yield: a quantitative synthesis. Ecol. Lett. 23, 1488–1498 (2020).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Chaplin-Kramer, R., de Valpine, P., Mills, N. J. & Kremen, C. Detecting pest control services across spatial and temporal scales. Agric. Ecosyst. Environ. 181, 206–212 (2013).Article 

    Google Scholar 
    Martin, E. A. et al. The interplay of landscape composition and configuration: new pathways to manage functional biodiversity and agroecosystem services across Europe. Ecol. Lett. 22, 1083–1094 (2019).PubMed 
    Article 

    Google Scholar 
    Karp, D. S. et al. Crop pests and predators exhibit inconsistent responses to surrounding landscape composition. Proc. Natl Acad. Sci. USA 115, E7863–E7870 (2018).CAS 
    PubMed 
    PubMed Central 

    Google Scholar 
    Zhang, X., Liu, X., Zhang, M., Dahlgren, R. A. & Eitzel, M. A review of vegetated buffers and a meta-analysis of their mitigation efficacy in reducing nonpoint source pollution. J. Environ. Qual. 39, 76–84 (2010).CAS 
    PubMed 
    Article 

    Google Scholar 
    Eyhorn, F. et al. Sustainability in global agriculture driven by organic farming. Nat. Sustain. 2, 253–255 (2019).Article 

    Google Scholar 
    Buck, D., Getz, C. & Guthman, J. From farm to table: the organic vegetable commodity chain of northern California. Sociol. Rural. 37, 3–20 (1997).Article 

    Google Scholar 
    Guthman, J. Raising organic: an agro-ecological assessment of grower practices in California. Agric. Hum. Values 17, 257–266 (2000).Article 

    Google Scholar 
    Guthman, J. The trouble with ‘organic lite’ in California: a rejoinder to the ‘conventionalisation’ debate. Sociol. Rural. 44, 301–316 (2004).Article 

    Google Scholar 
    Darnhofer, I., Lindenthal, T., Bartel-Kratochvil, R. & Zollitsch, W. Conventionalisation of organic farming practices: from structural criteria towards an assessment based on organic principles. A review. Agron. Sustain. Dev. 30, 67–81 (2010).Article 

    Google Scholar 
    Constance, D. H., Choi, J. Y. & Lyke-Ho-Gland, H. Conventionalization, bifurcation, and quality of life: certified and non-certified organic farmers in Texas. J. Rural Soc. Sci. 23, 208–234 (2008).
    Google Scholar 
    2017 Census of Agriculture – United States Summary and State Data (USDA NASS, 2019); https://www.nass.usda.gov/Publications/AgCensus/2017/index.php2017 Census of Agriculture: Characteristics of All Farms and Farms with Organic Sales (USDA NASS, 2019); https://www.nass.usda.gov/Publications/AgCensus/2017/index.phpPonisio, L. C. et al. Diversification practices reduce organic to conventional yield gap. Proc. R. Soc. B 282, 20141396 (2015).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Wezel, A. et al. Agroecological practices for sustainable agriculture. A review. Agron. Sustain. Dev. 34, 1–20 (2014).Article 

    Google Scholar 
    Gomiero, T., Pimentel, D. & Paoletti, M. G. Environmental impact of different agricultural management practices: conventional vs. organic agriculture. Crit. Rev. Plant Sci. 30, 95–124 (2011).Article 

    Google Scholar 
    Tittonell, P. et al. Agroecology in large scale farming—a research agenda. Front. Sustain. Food Syst. 4, 584605 (2020).Article 

    Google Scholar 
    Haan, N. L., Zhang, Y. & Landis, D. A. Predicting landscape configuration effects on agricultural pest suppression. Trends Ecol. Evol. 35, 175–186 (2020).PubMed 
    Article 

    Google Scholar 
    Martin, E. A., Seo, B., Park, C.-R., Reineking, B. & Steffan-Dewenter, I. Scale-dependent effects of landscape composition and configuration on natural enemy diversity, crop herbivory, and yields. Ecol. Appl. 26, 448–462 (2016).PubMed 
    Article 

    Google Scholar 
    Tscharntke, T. et al. Landscape moderation of biodiversity patterns and processes – eight hypotheses. Biol. Rev. 87, 661–685 (2012).PubMed 
    Article 

    Google Scholar 
    Olimpi, E. M. et al. Evolving food safety pressures in California’s central coast region. Front. Sustain. Food Syst. 3, 102 (2019).Article 

    Google Scholar 
    Karp, D. S. et al. The unintended ecological and social impacts of food safety regulations in California’s central coast region. BioScience 65, 1173–1183 (2015).Article 

    Google Scholar 
    Bovay, J., Ferrier, P. & Zhen, C. Estimated Costs for Fruit and Vegetable Producers To Comply With the Food Safety Modernization Act’s Produce Rule, EIB-195 (U.S. Department of Agriculture, Economic Research Service, 2018).Coombes, B. & Campbell, H. Dependent reproduction of alternative modes of agriculture: organic farming in New Zealand. Sociol. Rural. 38, 127–145 (1998).Article 

    Google Scholar 
    Hughner, R. S., McDonagh, P., Prothero, A., Shultz, C. J. & Stanton, J. Who are organic food consumers? A compilation and review of why people purchase organic food. J. Consum. Behav. 6, 94–110 (2007).Article 

    Google Scholar 
    Smith, E. & Marsden, T. Exploring the ‘limits to growth’ in UK organics: beyond the statistical image. J. Rural Stud. 20, 345–357 (2004).Article 

    Google Scholar 
    Howard, P. H. Concentration and Power in the Food System: Who Controls What We Eat? (Bloomsbury, 2016).Arcuri, A. The transformation of organic regulation: the ambiguous effects of publicization. Regul. Gov. 9, 144–159 (2015).Article 

    Google Scholar 
    Seufert, V., Ramankutty, N. & Mayerhofer, T. What is this thing called organic? – How organic farming is codified in regulations. Food Policy 68, 10–20 (2017).Article 

    Google Scholar 
    Guthman, J. in Alternative Food Politics: From the Margins to the Mainstream (eds. Phillipov, M. & Kirkwood, K.) 23–36 (Routledge, 2019).Jaffee, D. & Howard, P. H. Corporate cooptation of organic and fair trade standards. Agric. Hum. Values 27, 387–399 (2010).Article 

    Google Scholar 
    Campbell, H. & Rosin, C. After the ‘organic industrial complex’: an ontological expedition through commercial organic agriculture in New Zealand. J. Rural Stud. 27, 350–361 (2011).Article 

    Google Scholar 
    Lockie, S. & Halpin, D. The ‘conventionalisation’ thesis reconsidered: structural and ideological transformation of Australian organic agriculture. Sociol. Rural. 45, 284–307 (2005).Article 

    Google Scholar 
    Prokopy, L. S. et al. Adoption of agricultural conservation practices in the United States: evidence from 35 years of quantitative literature. J. Soil Water Conserv. 74, 520–534 (2019).Article 

    Google Scholar 
    Pretty, J. et al. Global assessment of agricultural system redesign for sustainable intensification. Nat. Sustain. 1, 441–446 (2018).Article 

    Google Scholar 
    Gliessman, S. Transforming food systems with agroecology. Agroecol. Sustain. Food Syst. 40, 187–189 (2016).Article 

    Google Scholar 
    Hill, S. B. Redesigning the food system for sustainability. Alternatives 12, 32–36 (1985).
    Google Scholar 
    Padel, S., Levidow, L. & Pearce, B. UK farmers’ transition pathways towards agroecological farm redesign: evaluating explanatory models. Agroecol. Sustain. Food Syst. 44, 139–163 (2020).Article 

    Google Scholar 
    Esquivel, K. E. et al. The ‘sweet spot’ in the middle: why do mid-scale farms adopt diversification practices at higher rates? Front. Sustain. Food Syst. 5, 734088 (2021).Article 

    Google Scholar 
    Brislen, L. Meeting in the middle: scaling-up and scaling-over in alternative food networks. Cult. Agric. Food Environ. 40, 105–113 (2018).Article 

    Google Scholar 
    De Master, K. New inquiries into the agri-cultures of the middle. Cult. Agric. Food Environ. 40, 130–135 (2018).Article 

    Google Scholar 
    R Core Team. R: A Language and Environment for Statistical Computing (R Foundation for Statistical Computing, 2021).Wickham, H. et al. Welcome to the Tidyverse. J. Open Source Softw. 4, 1686 (2019).Article 

    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 
    CAS 

    Google Scholar 
    Lenth, R. V. emmeans: Estimated marginal means, aka least-squares means. R package version 1.7.4-1 https://CRAN.R-project.org/package=emmeans (2021).Wasserstein, R. L. & Lazar, N. A. The ASA statement on p-values: context, process, and purpose. Am. Stat. 70, 129–133 (2016).Article 

    Google Scholar 
    Krueger, J. I. & Heck, P. R. Putting the P-value in its place. Am. Stat. 73, 122–128 (2019).Article 

    Google Scholar 
    Wasserstein, R. L., Schirm, A. L. & Lazar, N. A. Moving to a world beyond ‘p < 0.05’. Am. Stat. 73(Suppl. 1), 1–19 (2019).Article  Google Scholar  Agresti, A. Categorical Data Analysis (Wiley, 2013). More

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    Wastewater is a robust proxy for monitoring circulating SARS-CoV-2 variants

    Our long-term surveillance of SARS-CoV-2 in Austria demonstrated that WBE alone yields a time-resolved map of the genetic dynamics during a pandemic. Yet one task of pathogenomic surveillance is to link genetic pathogen information with clinical manifestation and the immunological status of patients. WBE is limited in that regard since the available data are anonymized to start with. Nonetheless, WBE provides invaluable population-level guidance on epidemiological developments, which complements case-based surveillance and provides information for optimal resource allocation. This notion can also be transferred to a global perspective. WBE provides a tool to shed light on blind spots of pathogen surveillance in places and communities with poor healthcare accessibility. If carefully set up and used in respectful and coequal terms, WBE of infectious diseases could make an important contribution to global safety.To this end, several challenges must be overcome. Current WBE methods need to be expanded to other pathogens beyond SARS-CoV-2 and validated with case-based epidemiological data. Furthermore, current methods must be adapted and optimized to be applicable in locations without a centralized sewer infrastructure5. Finally, international sharing of wastewater-based pathogen sequencing data will be needed to unleash the full potential of WBE for global pathogen surveillance.We are confident that our study will support initiatives already working in these directions, as well as encouraging intensified efforts to exploit such population-level surveillance approaches in the global fight against infectious diseases.
    Fabian Amman
    1
    & Andreas Bergthaler
    2

    1
    CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria

    2
    Medical University Vienna, Vienna, Austria More

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    Social senescence in red deer

    Snyder-Mackler, N. et al. Science 368, eaax9553 (2020).CAS 
    Article 

    Google Scholar 
    Wrzus, C., Hänel, M., Wagner, J. & Neyer, F. J. Psychol. Bull. 139, 53–80 (2013).Article 

    Google Scholar 
    Steptoe, A., Shankar, A., Demakakos, P. & Wardle, J. Proc. Natl Acad. Sci. USA 110, 5797–5801 (2013).CAS 
    Article 

    Google Scholar 
    Almeling, L., Hammerschmidt, K., Sennhenn-Reulen, H., Freund, A. M. & Fischer, J. Curr. Biol. 26, 1744–1749 (2016).CAS 
    Article 

    Google Scholar 
    Rosati, A. G. et al. Science 370, 473–476 (2020).CAS 
    Article 

    Google Scholar 
    Schino, G. & Pinzaglia, M. Am. J. Primatol. 80, e22746–e22747 (2018).Article 

    Google Scholar 
    Machanda, Z. P. & Rosati, A. G. Phil. Trans. R. Soc. Lond. B 375, 20190620 (2020).Article 

    Google Scholar 
    Kroeger, S. B., Blumstein, D. T. & Martin, J. G. A. Phil. Trans. R. Soc. Lond. B 376, 20190745 (2021).Article 

    Google Scholar 
    Weiss, M. N. et al. Proc. R. Soc. Lond. B 288, 20210617 (2021).
    Google Scholar 
    Albery, G. F. et al. Nat. Ecol. Evol. https://doi.org/10.1038/s41559-022-01817-9 (2022).Article 
    PubMed 

    Google Scholar 
    Siracusa, E. R., Higham, J. P., Snyder-Mackler, N. & Brent, L. J. N. Biol. Lett. 18, 20210643 (2022).Article 

    Google Scholar 
    Nussey, D. H., Coulson, T., Festa-Bianchet, M. & Gaillard, J. M. Funct. Ecol. 22, 393–406 (2008).Article 

    Google Scholar 
    Nussey, D. H., Froy, H., Lemaître, J.-F., Gaillard, J.-M. & Austad, S. N. Ageing Res. Rev. 12, 214–225 (2013).Article 

    Google Scholar  More

  • in

    Ageing red deer alter their spatial behaviour and become less social

    White, L. A., Forester, J. D. & Craft, M. E. Using contact networks to explore mechanisms of parasite transmission in wildlife. Biol. Rev. 92, 389–409 (2017).PubMed 
    Article 

    Google Scholar 
    Silk, M. J. et al. Using social network measures in wildlife disease ecology, epidemiology, and management. Bioscience 67, 245–257 (2017).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Albery, G. F., Kirkpatrick, L., Firth, J. A. & Bansal, S. Unifying spatial and social network analysis in disease ecology. J. Anim. Ecol. 90, 1–17 (2021).Article 

    Google Scholar 
    Evans, J. C., Silk, M. J., Boogert, N. J. & Hodgson, D. J. Infected or informed? Social structure and the simultaneous transmission of information and infectious disease. Oikos 129, 1271–1288 (2020).Article 

    Google Scholar 
    Aplin, L. M., Sheldon, B. C. & Morand-Ferron, J. Milk bottles revisited: social learning and individual variation in the blue tit, Cyanistes caeruleus. Anim. Behav. 85, 1225–1232 (2013).Article 

    Google Scholar 
    Silk, J. B. The adaptive value of sociality in mammalian groups. Phil. Trans. R. Soc. Lond. B 362, 539–559 (2007).Article 

    Google Scholar 
    Snyder-Mackler, N. et al. Social determinants of health and survival in humans and other animals. Science 368, eaax9553 (2020).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Machanda, Z. P. & Rosati, A. G. Shifting sociality during primate ageing. Phil. Trans. R. Soc. B 375, 20190620 (2020).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Nussey, D. H., Coulson, T., Festa-Bianchet, M. & Gaillard, J. M. Measuring senescence in wild animal populations: towards a longitudinal approach. Funct. Ecol. 22, 393–406 (2008).Article 

    Google Scholar 
    van de Pol, M. & Verhulst, S. Age-dependent traits: a new statistical model to separate within- and between-individual effects. Am. Nat. 167, 766–773 (2006).PubMed 
    Article 

    Google Scholar 
    Froy, H. et al. Declining home range area predicts reduced late-life survival in two wild ungulate populations. Ecol. Lett. 21, 1001–1009 (2018).PubMed 
    Article 

    Google Scholar 
    Rosati, A. G. et al. Social selectivity in aging wild chimpanzees. Science 370, 473–476 (2020).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Kim, S.-Y., Torres, R., Rodriguez, C. & Drummond, H. Effects of breeding success, mate fidelity and senescence on breeding dispersal of male and female blue-footed boobies. J. Anim. Ecol. 76, 471–479 (2007).PubMed 
    Article 

    Google Scholar 
    Webber, Q. M. R. & Vander Wal, E. An evolutionary framework outlining the integration of individual social and spatial ecology. J. Anim. Ecol. 87, 113–127 (2018).PubMed 
    Article 

    Google Scholar 
    Webber, Q. M. R. & Vander Wal, E. Trends and perspectives on the use of animal social network analysis in behavioural ecology: a bibliometric approach. Anim. Behav. 149, 77–87 (2019).Article 

    Google Scholar 
    Siracusa, E. R., Higham, J. P., Snyder-mackler, N. & Brent, L. J. N. Social ageing: exploring the drivers of late-life changes in social behaviour in mammals. Biol. Lett. 18, 20210643 (2022).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Elliott, K. H. et al. Ageing gracefully: physiology but not behaviour declines with age in a diving seabird. Funct. Ecol. 29, 219–228 (2015).Article 

    Google Scholar 
    Aartsen, M. J., Van Tilburg, T., Smits, C. H. M. & Knipscheer, K. C. P. M. A longitudinal study of the impact of physical and cognitive decline on the personal network in old age. J. Soc. Pers. Relat. 21, 249–266 (2004).Article 

    Google Scholar 
    Brent, L. J. N., Ruiz-Lambides, A. & Platt, M. L. Family network size and survival across the lifespan of female macaques. Proc. R. Soc. B 284, 20170515 (2017).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Turner, J. W., Robitaille, A. L., Bills, P. S. & Holekamp, K. E. Early-life relationships matter: social position during early life predicts fitness among female spotted hyenas. J. Anim. Ecol. 90, 183–196 (2021).PubMed 
    Article 

    Google Scholar 
    Almeling, L., Hammerschmidt, K., Sennhenn-Reulen, H., Freund, A. M. & Fischer, J. Motivational shifts in aging monkeys and the origins of social selectivity. Curr. Biol. 26, 1744–1749 (2016).CAS 
    PubMed 
    Article 

    Google Scholar 
    Albery, G. F. et al. Multiple spatial behaviours govern social network positions in a wild ungulate. Ecol. Lett. 24, 676–686 (2021).PubMed 
    Article 

    Google Scholar 
    Sanchez, J. N. & Hudgens, B. R. Interactions between density, home range behaviors, and contact rates in the Channel Island fox (Urocyon littoralis). Ecol. Evol. 5, 2466–2477 (2015).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Shizuka, D. & Johnson, A. E. How demographic processes shape animal social networks. Behav. Ecol. https://doi.org/10.1093/beheco/arz083 (2019).Krause, J., James, R., Franks, D. W. & Croft, D. P. Animal Social Networks (Oxford Univ. Press, 2015).Firth, J. A. et al. Wild birds respond to flockmate loss by increasing their social network associations to others. Proc. R. Soc. B 284, 20170299 (2017).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Evans, J. C., Liechti, J. I., Boatman, B. & König, B. A natural catastrophic turnover event: individual sociality matters despite community resilience in wild house mice. Proc. R. Soc. B 287, 20192880 (2020).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Rathke, E. & Fischer, J. Social aging in male and female Barbary macaques. Am. J. Primatol. https://doi.org/10.1002/ajp.23272 (2021).Kroeger, S. B., Blumstein, D. T. & Martin, J. G. A. A. How social behaviour and life-history traits change with age and in the year prior to death in female yellow-bellied marmots. Phil. Trans. R. Soc. B 376, 20190745 (2021).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Brambilla, A., von Hardenberg, A., Sueur, C., Canedoli, C. & Stanley, C. Long term analysis of social structure: evidence of age-based consistent associations in Alpine ibex. bioRxiv 1–42 (2021).González, N. T. et al. Age-related change in adult chimpanzee social network integration. Evol. Med. Public Health 9, 448–459 (2021).Article 

    Google Scholar 
    Clutton-Brock, T. H., Guinness, F. E. & Albon, S. D. Red Deer: Behavior and Ecology of Two Sexes. Vol. 15 (Univ. Chicago Press, 1982).Nussey, D. H., Kruuk, L. E. B., Donald, A., Fowlie, M. & Clutton-Brock, T. H. The rate of senescence in maternal performance increases with early-life fecundity in red deer. Ecol. Lett. 9, 1342–1350 (2006).PubMed 
    Article 

    Google Scholar 
    Croft, D. P., James, R. & Krause, J. Exploring Animal Social Networks (Princeton Univ. Press, 2008).Tobler, W. R. A computer movie simulating urban growth in the Detroit region. Econ. Geogr. 46, 234 (1970).Article 

    Google Scholar 
    Firth, J. A. & Sheldon, B. C. Social carry-over effects underpin trans-seasonally linked structure in a wild bird population. Ecol. Lett. 19, 1324–1332 (2016).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Spiegel, O., Leu, S. T., Sih, A. & Bull, C. M. Socially interacting or indifferent neighbours? Randomization of movement paths to tease apart social preference and spatial constraints. Methods Ecol. Evol. https://doi.org/10.1111/2041-210X.12553 (2016).Nussey, D. H. et al. The relationship between tooth wear, habitat quality and late-life reproduction in a wild red deer population. J. Anim. Ecol. 76, 402–412 (2007).PubMed 
    Article 

    Google Scholar 
    Loe, L. E., Mysterud, A., Langvatn, R. & Stenseth, N. C. Decelerating and sex-dependent tooth wear in Norwegian red deer. Oecologia 135, 346–353 (2003).PubMed 
    Article 

    Google Scholar 
    Peignier, M. et al. Space use and social association in a gregarious ungulate: testing the conspecific attraction and resource dispersion hypotheses. Ecol. Evol. 9, 5133–5145 (2019).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Franks, D. W., Ruxton, G. D. & James, R. Sampling animal association networks with the gambit of the group. Behav. Ecol. Sociobiol. 64, 493–503 (2010).Article 

    Google Scholar 
    Patterson, S. K., Strum, S. C. & Silk, J. B. Resource competition shapes female–female aggression in olive baboons, Papio anubis. Anim. Behav. 176, 23–41 (2021).Article 

    Google Scholar 
    Kays, R., Crofoot, M. C., Jetz, W. & Wikelski, M. Terrestrial animal tracking as an eye on life and planet. Science 348, aaa2478 (2015).PubMed 
    Article 
    CAS 

    Google Scholar 
    Gilbertson, M. L. J., White, L. A. & Craft, M. E. Trade‐offs with telemetry‐derived contact networks for infectious disease studies in wildlife. Methods Ecol. Evol. https://doi.org/10.1111/2041-210X.13355 (2020).Froy, H. et al. Senescence in immunity against helminth parasites predicts adult mortality in a wild mammal. Science 365, 1296–1298 (2019).CAS 
    PubMed 
    Article 

    Google Scholar 
    Siracusa, E. R. et al. Familiar neighbors, but not relatives, enhance fitness in a territorial mammal. Curr. Biol. 31, 438–445.e3 (2021).CAS 
    PubMed 
    Article 

    Google Scholar 
    Nussey, D. H., Kruuk, L. E. B., Morris, A. & Clutton-Brock, T. H. Environmental conditions in early life influence ageing rates in a wild population of red deer. Curr. Biol. 17, 1000–1001 (2007).Article 
    CAS 

    Google Scholar 
    Castles, M. et al. Social networks created with different techniques are not comparable. Anim. Behav. 96, 59–67 (2014).Article 

    Google Scholar 
    Froy, H., Walling, C. A., Pemberton, J. M., Clutton-brock, T. H. & Kruuk, L. E. B. Relative costs of offspring sex and offspring survival in a polygynous mammal. Biol. Lett. 12, 20160417 (2016).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Clutton-Brock, T. H., Albon, S. D. & Guinness, F. E. Fitness costs of gestation and lactation in wild mammals. Nature 337, 260–262 (1989).CAS 
    PubMed 
    Article 

    Google Scholar 
    Cairns, S. J. & Schwager, S. J. A comparison of association indices. Anim. Behav. 35, 1454–1469 (1987).Article 

    Google Scholar 
    Brent, L. J. N. Friends of friends: are indirect connections in social networks important to animal behaviour? Anim. Behav. 103, 211–222 (2015).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Whitehead, H. Analyzing Animal Societies: Quantitative Methods for Vertebrate Social Analysis (Univ. Chicago Press, 2008).Calenge, C. Home range estimation in R: the adehabitatHR package. https://cran.r-project.org/web/packages/adehabitatHR/index.html (2011).Lindgren, F. & Rue, H. Bayesian spatial modelling with R-INLA. J. Stat. Softw. 63, 1–25 (2015).Article 

    Google Scholar 
    Rue, H. & Martino, S. Approximate Bayesian inference for latent Gaussian models by using integrated nested Laplace approximations. Stat. Methodol. 71, 319–392 (2009).Article 

    Google Scholar 
    Bakka, H. et al. Spatial modelling with R-INLA: a review. WIREs Comput. Stat. 10, e1443 (2018).Article 

    Google Scholar 
    Lindgren, F., Rue, H. & Lindstrom, J. An explicit link between Gaussian fields and Gaussian Markov random fields: the stochastic partial differential equation approach. J. R. Stat. Soc. B 73, 423–498 (2011).Article 

    Google Scholar  More

  • in

    Glimmers of hope in large carnivore recoveries

    Possingham, H. P. et al. Limits to the use of threatened species lists. Trends Ecol. Evol. 17, 503–507 (2002).Article 

    Google Scholar 
    Duarte, C. M. et al. Rebuilding marine life. Nature 580, 39–51 (2020).ADS 
    CAS 
    PubMed 
    Article 

    Google Scholar 
    Knowlton, N. Ocean optimism: Moving beyond the obituaries in marine conservation. Annu. Rev. Mar. Sci. 13, 13 (2021).Article 

    Google Scholar 
    Cinner, J. E. et al. Bright spots among the world’s coral reefs. Nature 535, 416–419 (2016).ADS 
    CAS 
    PubMed 
    Article 

    Google Scholar 
    Ripple, W. J. et al. Status and ecological effects of the world’s largest carnivores. Science 343, 1241484 (2014).PubMed 
    Article 
    CAS 

    Google Scholar 
    Estes, J. A. et al. Trophic downgrading of planet earth. Science 333, 301–306 (2011).ADS 
    CAS 
    PubMed 
    Article 

    Google Scholar 
    Hammerschlag, N. et al. Ecosystem function and services of aquatic predators in the anthropocene. Trends Ecol. Evol. 34(4), 369–383 (2019).PubMed 
    Article 

    Google Scholar 
    Ritchie, E. G. et al. Ecosystem restoration with teeth: What role for predators?. Trends Ecol. Evol. 27, 265–271 (2012).PubMed 
    Article 

    Google Scholar 
    Young, H. S., McCauley, D. J., Galetti, M. & Dirzo, R. Patterns, causes, and consequences of anthropocene defaunation. Annu. Rev. Ecol. Evol. Syst. 47, 333–358 (2016).Article 

    Google Scholar 
    Marshall, K. N., Stier, A. C., Samhouri, J. F., Kelly, R. P. & Ward, E. J. Conservation challenges of predator recovery. Conserv. Lett. 9, 70–78 (2016).Article 

    Google Scholar 
    Gregr, E. J. et al. Cascading social-ecological costs and benefits triggered by a recovering keystone predator. Science 368, 1243–1247 (2020).ADS 
    CAS 
    PubMed 
    Article 

    Google Scholar 
    Jones, K. R. et al. The location and protection status of earth’s diminishing marine wilderness. Curr. Biol. 28, 2506-2512.e3 (2018).CAS 
    PubMed 
    Article 

    Google Scholar 
    Dirzo, R. et al. Defaunation in the anthropocene. Science 345, 401–406 (2014).ADS 
    CAS 
    PubMed 
    Article 

    Google Scholar 
    McCauley, D. J. et al. Marine defaunation: Animal loss in the global ocean. Science 347, 1255641 (2015).PubMed 
    Article 
    CAS 

    Google Scholar 
    Nielsen, M. R., Meilby, H., Smith-Hall, C., Pouliot, M. & Treue, T. The importance of wild meat in the global south. Ecol. Econ. 146, 696–705 (2018).Article 

    Google Scholar 
    Ripple, W. J. et al. Are we eating the world’s megafauna to extinction?. Conserv. Lett. 12, e12627 (2019).Article 

    Google Scholar 
    Pacoureau, N. et al. Half a century of global decline in oceanic sharks and rays. Nature 589, 567–571 (2021).ADS 
    CAS 
    PubMed 
    Article 

    Google Scholar 
    Carrizo, S. F. et al. Freshwater megafauna: Flagships for freshwater biodiversity under threat. Bioscience 67, 919–927 (2017).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Luskin, M. S., Albert, W. R. & Tobler, M. W. Sumatran tiger survival threatened by deforestation despite increasing densities in parks. Nat. Commun. 8, 1783 (2017).ADS 
    PubMed 
    PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Desforges, J.-P. et al. Predicting global killer whale population collapse from PCB pollution. Science 361, 1373–1376 (2018).ADS 
    CAS 
    PubMed 
    Article 

    Google Scholar 
    Alava, J. J., Cheung, W. W. L., Ross, P. S. & Sumaila, U. R. Climate change–contaminant interactions in marine food webs: Toward a conceptual framework. Glob. Change Biol. 23, 3984–4001 (2017).Article 

    Google Scholar 
    Chapron, G. et al. Recovery of large carnivores in Europe’s modern human-dominated landscapes. Science 346, 1517–1519 (2014).ADS 
    CAS 
    PubMed 
    Article 

    Google Scholar 
    House, P. H., Clark, B. L. & Allen, L. G. The return of the king of the kelp forest: Distribution, abundance, and biomass of Giant sea bass (Stereolepis gigas) off Santa Catalina Island, California, 2014–2015. Bull. South. Calif. Acad. Sci. 115, 1–14 (2016).
    Google Scholar 
    Waterhouse, L. et al. Recovery of critically endangered Nassau grouper (Epinephelus striatus) in the Cayman Islands following targeted conservation actions. Proc. Natl. Acad. Sci. 117, 1587–1595 (2020).CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Balmford, A. & Knowlton, N. Why Earth Optimism? (American Association for the Advancement of Science, 2017).Book 

    Google Scholar 
    Sutherland, W. J., Pullin, A. S., Dolman, P. M. & Knight, T. M. The need for evidence-based conservation. Trends Ecol. Evol. 19, 305–308 (2004).PubMed 
    Article 

    Google Scholar 
    Adams, W. M. & Sandbrook, C. Conservation, evidence and policy. Oryx 47, 329–335 (2013).Article 

    Google Scholar 
    Faith, J. T. & Surovell, T. A. Synchronous extinction of North America’s Pleistocene mammals. Proc. Natl. Acad. Sci. 106, 20641–20645 (2009).ADS 
    CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Davis, S. J., Peters, G. P. & Caldeira, K. The supply chain of CO2 emissions. Proc. Natl. Acad. Sci. https://doi.org/10.1073/pnas.1107409108 (2011).Article 
    PubMed 
    PubMed Central 

    Google Scholar 
    Visconti, P. et al. Projecting global biodiversity indicators under future development scenarios. Conserv. Lett. 9, 5–13 (2016).Article 

    Google Scholar 
    Lotze, H. K., Coll, M., Magera, A. M., Ward-Paige, C. & Airoldi, L. Recovery of marine animal populations and ecosystems. Trends Ecol. Evol. 26, 595–605 (2011).PubMed 
    Article 

    Google Scholar 
    Queiroz, N. et al. Global spatial risk assessment of sharks under the footprint of fisheries. Nature https://doi.org/10.1038/s41586-019-1444-4 (2019).Article 
    PubMed 

    Google Scholar 
    Pimiento, C. et al. Functional diversity of marine megafauna in the anthropocene. Sci. Adv. 6, 7650 (2020).ADS 
    Article 

    Google Scholar 
    Estes, J. A., Heithaus, M., McCauley, D. J., Rasher, D. B. & Worm, B. Megafaunal impacts on structure and function of ocean ecosystems. Annu. Rev. Environ. Resour. 41, 83–116 (2016).Article 

    Google Scholar 
    Hoffmann, M. et al. The impact of conservation on the status of the world’s vertebrates. Science 330, 1503–1509 (2010).ADS 
    CAS 
    PubMed 
    Article 

    Google Scholar 
    Tom Gelatt (National Marine Mammal Laboratory, A. F. S. C. & Sweeney, K. IUCN red list of threatened species: Eumetopias jubatus. IUCN Red List of Threatened Species. https://www.iucnredlist.org/en (2016).Taylor, M. F. J., Suckling, K. F. & Rachlinski, J. J. The effectiveness of the endangered species act: A quantitative analysis. Bioscience 55, 360–367 (2005).Article 

    Google Scholar 
    Hejny, J. The Trump administration and environmental policy: Reagan redux?. J. Environ. Stud. Sci. 8, 197–211 (2018).Article 

    Google Scholar 
    Sanderson, F. J. et al. Assessing the performance of EU nature legislation in protecting target bird species in an era of climate change. Conserv. Lett. 9, 172–180 (2016).Article 

    Google Scholar 
    Donald, P. F. et al. International conservation policy delivers benefits for birds in Europe. Science 317, 810–813 (2007).ADS 
    CAS 
    PubMed 
    Article 

    Google Scholar 
    Cuthbert, R. J. et al. Continuing mortality of vultures in India associated with illegal veterinary use of diclofenac and a potential threat from nimesulide. Oryx 50, 104–112 (2016).Article 

    Google Scholar 
    Margalida, A. & Oliva-Vidal, P. The shadow of diclofenac hangs over European vultures. Nat. Ecol. Evol. 1, 1050 (2017).PubMed 
    Article 

    Google Scholar 
    Williams, D. R., Balmford, A. & Wilcove, D. S. The past and future role of conservation science in saving biodiversity. Conserv. Lett. 13, e12720 (2020).Article 

    Google Scholar 
    Barnes, M. D. et al. Wildlife population trends in protected areas predicted by national socio-economic metrics and body size. Nat. Commun. 7, 12747 (2016).ADS 
    CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Sala, E. & Giakoumi, S. No-take marine reserves are the most effective protected areas in the ocean. ICES J. Mar. Sci. 75, 1166–1168 (2018).Article 

    Google Scholar 
    Watson, J. E. M., Dudley, N., Segan, D. B. & Hockings, M. The performance and potential of protected areas. Nature 515, 67–73 (2014).ADS 
    CAS 
    PubMed 
    Article 

    Google Scholar 
    Juffe-Bignoli, D. et al. Protected Planet Report 2014: Tracking Progress Towards Global Targets for Protected Areas (Springer, 2014).
    Google Scholar 
    Turnbull, J. W., Johnston, E. L. & Clark, G. F. Evaluating the social and ecological effectiveness of partially protected marine areas. Conserv. Biol. 35, 921–932 (2021).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Barnosky, A. D. et al. Merging paleobiology with conservation biology to guide the future of terrestrial ecosystems. Science 355, 1–10 (2017).Article 
    CAS 

    Google Scholar 
    White, T. D. et al. Assessing the effectiveness of a large marine protected area for reef shark conservation. Biol. Conserv. 207, 64–71 (2017).Article 

    Google Scholar 
    Geldmann, J. et al. Effectiveness of terrestrial protected areas in reducing habitat loss and population declines. Biol. Conserv. 161, 230–238 (2013).Article 

    Google Scholar 
    Daskin, J. H. & Pringle, R. M. Warfare and wildlife declines in Africa’s protected areas. Nature 553, 328–332 (2018).ADS 
    CAS 
    PubMed 
    Article 

    Google Scholar 
    Pringle, R. M. Upgrading protected areas to conserve wild biodiversity. Nature 546, 91–99 (2017).ADS 
    CAS 
    PubMed 
    Article 

    Google Scholar 
    Redpath, S. M. et al. Don’t forget to look down: Collaborative approaches to predator conservation. Biol. Rev. 92, 2157–2163 (2017).PubMed 
    Article 

    Google Scholar 
    Hazzah, L. et al. Efficacy of two lion conservation programs in Maasailand, Kenya. Conserv. Biol. 28, 851–860 (2014).PubMed 
    Article 

    Google Scholar 
    Zarfl, C. et al. Future large hydropower dams impact global freshwater megafauna. Sci. Rep. 9, 18531 (2019).ADS 
    CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Arthington, A. H., Dulvy, N. K., Gladstone, W. & Winfield, I. J. Fish conservation in freshwater and marine realms: Status, threats and management. Aquat. Conserv. Mar. Freshw. Ecosyst. 26, 838–857 (2016).Article 

    Google Scholar 
    Castello, L. & Macedo, M. N. Large-scale degradation of Amazonian freshwater ecosystems. Glob. Change Biol. 22, 990–1007 (2016).ADS 
    Article 

    Google Scholar 
    Safford, R. et al. Vulture conservation: The case for urgent action. Bird Conserv. Int. 29, 1–9 (2019).Article 

    Google Scholar 
    Ogada, D. et al. Another continental vulture crisis: Africa’s vultures collapsing toward extinction. Conserv. Lett. 9, 89–97 (2016).ADS 
    Article 

    Google Scholar 
    Buechley, E. R. & Şekercioğlu, Ç. H. The avian scavenger crisis: Looming extinctions, trophic cascades, and loss of critical ecosystem functions. Biol. Conserv. 198, 220–228 (2016).Article 

    Google Scholar 
    Hammerschlag, N. & Gallagher, A. J. Extinction risk and conservation of the earth’s national animal symbols. Bioscience 67, 744–749 (2017).Article 

    Google Scholar 
    Sutherland, W. J., Dicks, L. V., Ockendon, N. & Smith, R. K. What Works in Conservation 2015 (Open Book Publishers, 2015).Book 

    Google Scholar 
    Dulvy, N. K. et al. Challenges and priorities in shark and ray conservation. Curr. Biol. 27, R565–R572 (2017).CAS 
    PubMed 
    Article 

    Google Scholar 
    Finucci, B., Duffy, C. A. J., Francis, M. P., Gibson, C. & Kyne, P. M. The extinction risk of New Zealand chondrichthyans. Aquat. Conserv. Mar. Freshw. Ecosyst. 29, 783–797 (2019).Article 

    Google Scholar 
    Creel, S. et al. Questionable policy for large carnivore hunting. Science 350, 1473–1475 (2015).ADS 
    CAS 
    PubMed 
    Article 

    Google Scholar 
    González, L. M. et al. Causes and spatio-temporal variations of non-natural mortality in the Vulnerable Spanish imperial eagle Aquila adalberti during a recovery period. Oryx 41, 495–502 (2007).Article 

    Google Scholar 
    Morandini, V., de Benito, E., Newton, I. & Ferrer, M. Natural expansion versus translocation in a previously human-persecuted bird of prey. Ecol. Evol. 7, 3682–3688 (2017).PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Goodrich, J. M. et al. Panthera tigris, Tiger. IUCN Red List Threat. Species (2015).Wikramanayake, E. et al. A landscape-based conservation strategy to double the wild tiger population. Conserv. Lett. 4, 219–227 (2011).Article 

    Google Scholar 
    Bhattarai, B. R., Wright, W., Morgan, D., Cook, S. & Baral, H. S. Managing human-tiger conflict: Lessons from Bardia and Chitwan National Parks, Nepal. Eur. J. Wildl. Res. 65, 34 (2019).Article 

    Google Scholar 
    Pinsky, M. L. et al. Preparing ocean governance for species on the move. Science 360, 1189–1191 (2018).ADS 
    CAS 
    PubMed 
    Article 

    Google Scholar 
    Courchamp, F. et al. The paradoxical extinction of the most charismatic animals. PLoS Biol. 16, e2003997 (2018).PubMed 
    PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Nyhus, P. J. Human-wildlife conflict and coexistence. Annu. Rev. Environ. Resour. 41, 143–171 (2016).Article 

    Google Scholar 
    Carter, N. H. & Linnell, J. D. C. Co-adaptation is key to coexisting with large carnivores. Trends Ecol. Evol. 31, 575–578 (2016).PubMed 
    Article 

    Google Scholar 
    Guerra, A. S. Wolves of the sea: Managing human-wildlife conflict in an increasingly tense ocean. Mar. Policy 99, 369–373 (2019).Article 

    Google Scholar 
    Das, C. S. Pattern and characterisation of human casualties in Sundarban by tiger attacks, India. Sustain. For. 1, 1–10 (2018).
    Google Scholar 
    Packer, C. et al. Conserving large carnivores: Dollars and fence. Ecol. Lett. 16, 635–641 (2013).CAS 
    PubMed 
    Article 

    Google Scholar 
    Dudley, S. F. J. A comparison of the shark control programs of New South Wales and Queensland (Australia) and KwaZulu-Natal (South Africa). Ocean Coast. Manag. 34, 1–27 (1997).Article 

    Google Scholar 
    O’Connell, C. P., Andreotti, S., Rutzen, M., Meӱer, M. & Matthee, C. A. Testing the exclusion capabilities and durability of the Sharksafe Barrier to determine its viability as an eco-friendly alternative to current shark culling methodologies. Aquat. Conserv. Mar. Freshw. Ecosyst. 28, 252–258 (2018).Article 

    Google Scholar 
    Gailey, G. et al. Effects of sea ice on growth rates of an endangered population of gray whales. Sci. Rep. 10, 1553 (2020).ADS 
    CAS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 
    Hazen, E. L. et al. A dynamic ocean management tool to reduce bycatch and support sustainable fisheries. Sci. Adv. 4, 3001 (2018).ADS 
    Article 

    Google Scholar 
    Ingeman, K. E., Samhouri, J. F. & Stier, A. C. Ocean recoveries for tomorrow’s Earth: Hitting a moving target. Science 363, 6425 (2019).Article 

    Google Scholar 
    Sánchez-Hernández, J. & Amundsen, P.-A. Ecosystem type shapes trophic position and omnivory in fishes. Fish Fish. 19, 1003–1015 (2018).Article 

    Google Scholar 
    Gainsbury, A. M., Tallowin, O. J. S. & Meiri, S. An updated global data set for diet preferences in terrestrial mammals: testing the validity of extrapolation. Mammal Rev. 48, 160–167 (2018).Article 

    Google Scholar 
    Faurby, S. et al. PHYLACINE 1.2: The phylogenetic atlas of mammal macroecology. Ecology 99, 2626–2626 (2018).PubMed 
    Article 

    Google Scholar 
    Costello, M. J. et al. Marine biogeographic realms and species endemicity. Nat. Commun. 8, 1057 (2017).ADS 
    PubMed 
    PubMed Central 
    Article 
    CAS 

    Google Scholar 
    Olson, D. M. et al. Terrestrial ecoregions of the world: A new map of life on earth: A new global map of terrestrial ecoregions provides an innovative tool for conserving biodiversity. Bioscience 51, 933–938 (2001).Article 

    Google Scholar 
    Rodrigues, A. S. L., Pilgrim, J. D., Lamoreux, J. F., Hoffmann, M. & Brooks, T. M. The value of the IUCN red list for conservation. Trends Ecol. Evol. 21, 71–76 (2006).PubMed 
    Article 

    Google Scholar  More