Maldonado, M. et al. in Marine Animal Forests: The Ecology of Benthic Biodiversity Hotspots (eds. Rossi, S., Bramanti, L., Gori, A. & del Valle, C.) (Springer, 2016).
de Goeij, J. M. et al. Surviving in a marine desert: the sponge loop retains resources within coral reefs. Science 342, 108–110 (2013).
Google Scholar
Beazley, L., Kenchington, E., Yashayaev, I. & Murillo, F. J. Drivers of epibenthic megafaunal composition in the sponge grounds of the Sackville Spur, northwest. Atl. Deep. Res. Part I 98, 102–114 (2015).
Klitgaard, A. B. & Tendal, O. S. Progress in oceanography distribution and species composition of mass occurrences of large-sized sponges in the northeast Atlantic. Prog. Oceanogr. 61, 57–98 (2004).
Google Scholar
Kazanidis, G. et al. Distribution of deep-sea sponge aggregations in an area of multisectoral activities and changing oceanic conditions. Front. Mar. Sci. 6, 163 (2019).
Hanz, U., Roberts, E. M., Duineveld, G., Davies, A. & Rapp, H. T. Long – term observations reveal environmental conditions and food supply mechanisms at an Arctic deep-sea sponge ground. J. Geophisical. Res. 126, 1–18 (2021).
Roberts, E. et al. Water masses constrain the distribution of deep-sea sponges in the North Atlantic Ocean and Nordic Seas. Mar. Ecol. Prog. Ser. 659, 75–96 (2021).
Google Scholar
Cathalot, C. et al. Cold-water coral reefs and adjacent sponge grounds: hotspots of benthic respiration and organic carbon cycling in the deep sea. Front. Mar. Sci. 2, 37 (2015).
Kahn, A. S., Yahel, G., Chu, J. W. F., Tunnicliffe, V. & Leys, S. P. Benthic grazing and carbon sequestration by deep-water glass sponge reefs. Limnol. Oceanogr. 60, 78–88 (2015).
Google Scholar
Morganti, T., Coma, R., Yahel, G. & Ribes, M. Trophic niche separation that facilitates co-existence of high and low microbial abundance sponges is revealed by in situ study of carbon and nitrogen fluxes. Limnol. Oceanogr. 62, 1963–1983 (2017).
Google Scholar
Kutti, T., Bannister, R. J. & Fosså, J. H. Community structure and ecological function of deep-water sponge grounds in the Traenadypet MPA — Northern Norwegian continental shelf. Cont. Shelf Res. 69, 21–30 (2013).
Google Scholar
Bart, M. C. et al. Dissolved organic carbon (DOC) is essential to balance the metabolic demands of four dominant North-Atlantic deep-sea sponges. Limnol. Oceanogr. 9999, 1–14 (2020).
Gloeckner, V. et al. The HMA-LMA dichotomy revisited: an electron microscopical survey of 56 sponge species. Biol. Bull. 227, 78–88 (2014).
Google Scholar
Bruck, T. B., Self, W. T., Reed, J. K., Nitecki, S. S. & McCarthy, P. J. Comparison of the anaerobic microbiota of deep-water Geodia spp. and sandy sediments in the Straits of Florida. ISME J. 4, 686–699 (2010).
Google Scholar
Schottner, S. et al. Relationships between host phylogeny, host type and bacterial community diversity in cold-water coral reef sponges. PLoS ONE 8, 1–11 (2013).
Hoffmann, F. et al. An anaerobic world in sponges. Geomicrobiol. J. 22, 1–10 (2005).
Schlindwein, V. & Schmid, F. Mid-ocean-ridge seismicity reveals extreme types of ocean lithosphere. Nature 535, 276–279 (2016).
Google Scholar
Cochran, J. R. Seamount volcanism along the Gakkel Ridge. Arct. Ocean. Geophys. J. Int. 174, 1153–1173 (2008).
Google Scholar
Arrigo, K. R., van Dijken, G. & Pabi, S. Impact of a shrinking Arctic ice cover on marine primary production. Geophys. Res. Lett. 35, L19603 (2008).
Google Scholar
Wassmann, P., Slagstad, D. & Ellingsen, I. Primary production and climatic variability in the European sector of the Arctic Ocean prior to 2007: preliminary results. Polar Biol. 33, 1641–1650 (2010).
Wiedmann, I. et al. What feeds the Benthos in the Arctic Basins? Assembling a carbon budget for the deep Arctic Ocean. Front. Mar. Sci. 7, 224 (2020).
Boetius, A. & Purser, A. The Expedition PS101 of the Research Vessel POLARSTERN to the Arctic Ocean in 2016, Berichte zur Polar- und Meeresforschung = Reports on polar and marine research, Bremerhaven, Alfred Wegener Institute for Polar and Marine Research. (2017).
Alvizu, A., Xavier, J. R. & Rapp, H. T. Description of new chiactine-bearing sponges provides insights into the higher classification of Calcaronea (Porifera: Calcarea). Zootaxa 4615, 201–251 (2019).
Rybakova, E., Kremenetskaia, A., Vedenin, A., Boetius, A. & Gebruk, A. Deep-sea megabenthos communities of the Eurasian Central Arctic are influenced by ice-cover and sea-ice algal falls. PLoS ONE 14, 1–27 (2019).
Astrom, E. K. L. et al. Methane cold seeps as biological oases in the high-Arctic deep sea. Limnol. Oceanogr. 63, 209–231 (2018).
Sen, A., Didriksen, A., Hourdez, S., Svenning, M. M. & Rasmussen, T. L. Frenulate siboglinids at high Arctic methane seeps and insight into high latitude frenulate distribution. Ecol. Evol. 10, 1339–1351 (2020).
Google Scholar
Henrich, R. et al. Facies belts and communities of the arctic Vesterisbanken Seamount (Central Greenland Sea). Facies 27, 71 (1992).
Leys, S. P., Kahn, A. S., Fang, J. K. H., Kutti, T. & Bannister, R. J. Phagocytosis of microbial symbionts balances the carbon and nitrogen budget for the deep-water boreal sponge Geodia barretti. Limnol. Oceanogr. 63, 187–202 (2018).
Google Scholar
Druffel, E. R. M., Griffin, S., Glynn, C. S., Benner, R. & Walker, B. D. Radiocarbon in dissolved organic and inorganic carbon of the Arctic Ocean. Geophys. Res. Lett. 44, 2369–2376 (2017).
Google Scholar
Mehrshad, M., Rodriguez-Valera, F., Amoozegar, M. A., López-García, P. & Ghai, R. The enigmatic SAR202 cluster up close: shedding light on a globally distributed dark ocean lineage involved in sulfur cycling. ISME J. 12, 655–668 (2018).
Google Scholar
Petersen, J. M., Wentrup, C., Verna, C., Knittel, K. & Dubilier, N. Origins and evolutionary flexibility of chemosynthetic symbionts from deep-sea animals. Biol. Bull. 223, 123–137 (2012).
Google Scholar
Rubin-Blum, M. et al. Fueled by methane: deep-sea sponges from asphalt seeps gain their nutrition from methane-oxidizing symbionts. ISME J. 13, 1209–1225 (2019).
Google Scholar
Bayer, K., Jahn, M. T., Slaby, B. M., Moitinho-Silva, L. & Hentschel, U. Marine sponges as chloroflexi hot spots: genomic insights and high-resolution visualization of an abundant and diverse symbiotic clade. mSystems 3, e00150–18 (2018).
Google Scholar
Kamke, J. et al. Single-cell genomics reveals complex carbohydrate degradation patterns in poribacterial symbionts of marine sponges. ISME J. 7, 2287–2300 (2013).
Google Scholar
Bayer, K. et al. Microbial strategies for survival in the glass sponge Vazella pourtalesii. mSystems 5, e00473–20 (2020).
Google Scholar
Van Duyl, F. C., Hegeman, J., Hoogstraten, A. & Maier, C. Dissolved carbon fixation by sponge-microbe consortia of deep water coral mounds in the northeastern Atlantic Ocean. Mar. Ecol. Prog. Ser. 358, 137–150 (2008).
Google Scholar
Leitner, A. B., Neuheimer, A. B. & Drazen, J. C. Evidence for long-term seamount-induced chlorophyll enhancements. Sci. Rep. 10, 12729 (2020).
Google Scholar
von Appen, W.-J., Latarius, K. & Kanzow, T. Physical oceanography and current meter data from mooring F6-17. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (2017). https://doi.org/10.1594/PANGAEA.870845.
Woodgate, R. Arctic ocean circulation: going around at the top of the world. Nat. Educ. Knowl. 4, 8 (2013).
White, M., Bashmachnikov, I., Arístegui, J. & Martins, A. in Seamounts: Ecology, Fisheries & Conservation (eds Pitcher, T. J. et al.) Ch. 4 (Wiley, 2007).
Buchs, D. M., Hoernle, K. & Grevemeyer, I. In Encyclopedia of Marine Geosciences (eds Harff, J., Meschede, M., Petersen, S. & Thiede, J.) (Springer, Dordrecht, 2015). https://doi.org/10.1007/978-94-007-6644-0_34-2.
Emerson, D. & Moyer, C. Microbiology of seamounts: common patterns observed in community structure. Oceanography 23, 148–163 (2010).
Rimskaya-Korsakova, N. N. et al. First discovery of pogonophora (Annelida, Siboglinidae) in the Kara Sea coincide with the area of high methane concentration. Dokl. Biol. Sci. 490, 25–27 (2020).
Google Scholar
Cardenas, P. & Rapp, H. T. Demosponges from the Northern mid-Atlantic ridge shed more light on the diversity and biogeography of North Atlantic deep-sea sponges. J. Mar. Biol. Assoc. U. Kindom 95, 1475–1516 (2015).
Meyer, H. K., Roberts, E. M., Rapp, H. T. & Davies, A. J. Spatial patterns of arctic sponge ground fauna and demersal fish are detectable in autonomous underwater vehicle (AUV) imagery. Deep. Res. Part I Oceanogr. Res. Pap. 153, 103137 (2019).
Grebmeier, J. M. et al. Ecosystem characteristics and processes facilitating persistent macrobenthic biomass hotspots and associated benthivory in the Pacific Arctic. Prog. Oceanogr. 136, 92–114 (2015).
Google Scholar
Oevelen, D. Van et al. The cold-water coral community as a hot spot for carbon cycling on continental margins: a food-web analysis from Rockall Bank (northeast Atlantic). Limnol. Oceanogr. 54, 1829–1844 (2009).
Google Scholar
Hammel, J. U., Herzen, J., Beckmann, F. & Nickel, M. Sponge budding is a spatiotemporal morphological patterning process: insights from synchrotron radiation-based x-ray microtomography into the asexual reproduction of Tethya wilhelma. Front. Zool. 6, 19 (2009).
Google Scholar
Witte, U. & Graf, G. Metabolism of deep-sea sponges in the Greenland- Norwegian Sea. Mar. Biol. 198, 223–235 (1996).
Rovelli, L. et al. Benthic O2 uptake of two cold-water coral communities estimated with the non-invasive eddy correlation technique. Mar. Ecol. Prog. Ser. 525, 97–104 (2015).
Google Scholar
De Clippele, L. H. et al. Mapping cold-water coral biomass: an approach to derive ecosystem functions. Coral Reefs 40, 215–231 (2021).
de Kluijver, A. et al. An integrative model of carbon and nitrogen metabolism in a common deep-sea sponge (Geodia barretti). Front. Mar. Sci. 7, 1–18 (2021).
Lalande, C., Nothig, E.-M. & Fortier, L. Algal export in the Arctic ocean in times of global warming. Geophys. Res. Lett. 46, 1–9 (2019).
Boetius, A. et al. Export of algal biomass from the melting Arctic sea ice. Science 339, 1430–1433 (2013).
Maier, S. R. et al. Survival under conditions of variable food availability: Resource utilization and storage in the cold-water coral Lophelia pertusa. Limnol. Oceanogr. 64, 1651–1671 (2019).
Google Scholar
Rix, L. et al. Heterotrophy in the earliest gut: a single-cell view of heterotrophic carbon and nitrogen assimilation in sponge-microbe symbioses. ISME J. 14, 2554–2567 (2020).
Google Scholar
Hansell, D. A. Recalcitrant dissolved organic carbon fractions. Ann. Rev. Mar. Sci. 5, 421–445 (2013).
Google Scholar
Bart, M. C. et al. Differential processing of dissolved and particulate organic matter by deep-sea sponges and their microbial symbionts. Sci. Rep. 10, 1–13 (2020).
Anderson, L. G. & Amon, R. M. W. DOM in the Arctic Ocean. In Biogeochemistry of Marine Dissolved Organic Matter (eds Hansell, D. A. & Carlson, C. A.) Ch. 14 (Academic Press, 2015).
Rossel, P. E., Bienhold, C., Boetius, A. & Dittmar, T. Dissolved organic matter in pore water of Arctic Ocean sediments: environmental influence on molecular composition. Org. Geochem. 97, 41–52 (2016).
Google Scholar
Landry, Z., Swan, B. K., Herndl, G. J., Stepanauskas, R. & Giovannoni, S. J. SAR202 genomes from the dark ocean predict pathways for the oxidation of recalcitrant dissolved organic matter. MBio 8, e00413–e00417 (2017).
Google Scholar
Radax, R. et al. Metatranscriptomics of the marine sponge Geodia barretti: tackling phylogeny and function of its microbial community. Environ. Microbiol. 14, 1308–1324 (2012).
Busch, K. et al. Chloroflexi dominate the deep-sea golf ball sponges Craniella zetlandica and Craniella infrequens throughout different life stages. Front. Mar. Sci. 7, 1–13 (2020).
Raimundo, I. et al. Functional metagenomics reveals differential chitin degradation and utilization features across free-living and host-associated marine microbiomes. Microbiome 9, 1–18 (2021).
Hoffmann, F. et al. Complex nitrogen cycling in the sponge Geodia barretti. Environ. Microbiol. 11, 2228–2243 (2009).
Google Scholar
Radax, R., Hoffmann, F., Rapp, H. T., Leininger, S. & Schleper, C. Ammonia-oxidizing archaea as main drivers of nitrification in cold-water sponges. Environ. Microbiol. 14, 909–923 (2012).
Google Scholar
Kahn, A. S., Chu, J. W. F. & Leys, S. P. Trophic ecology of glass sponge reefs in the Strait of Georgia, British Columbia. Sci. Rep. 8, 756 (2018).
Google Scholar
Thiel, V. et al. Mid-chain branched alkanoic acids from “living fossil” demosponges: a link to ancient sedimentary lipids? Org. Geochem. 30, 1–14 (1999).
Google Scholar
de Kluijver, A. et al. Bacterial precursors and unsaturated long-chain fatty acids are biomarkers of North-Atlantic deep-sea demosponges. PLoS ONE 16, 1–18 (2021).
Parnell, A. C., Inger, R., Bearhop, S. & Jackson, A. L. Source partitioning using stable isotopes: coping with too much variation. PLoS ONE 5, e9672 (2010).
Google Scholar
Freeman, C. J. et al. Microbial symbionts and ecological divergence of Caribbean sponges: a new perspective on an ancient association. ISME J. 14, 1571–1583 (2020).
Google Scholar
Middelburg, J. J. Stable isotopes dissect aquatic food webs from the top to the bottom. Biogeosciences 11, 2357–2371 (2014).
Google Scholar
Åström, E. et al. Chemosynthesis influences food web and community structure in high-Arctic benthos. Mar. Ecol. Prog. Ser. 629, 19–42 (2019).
Google Scholar
Ravaux, J. et al. Comparative degradation rates of chitinous exoskeletons from deep-sea environments. Mar. Biol. 143, 405–412 (2003).
Google Scholar
Gooday, G. W. The Ecology of Chitin Degradation. In Advances in Microbial Ecology, (ed. Marshall, K. C.) vol 11. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-7612-5_10.
Schwarz, J. R., Yayanos, A. A. & Colwell, R. R. Metabolic activities of the intestinal microflora of a deep-sea invertebrate. Appl. Environ. Microbiol. 31, 46 LP–46 48 (1976).
Google Scholar
Godefroy, N. et al. Sponge digestive system diversity and evolution: filter feeding to carnivory. Cell Tissue Res. 377, 341–351 (2019).
Google Scholar
Ehrlich, H. et al. First evidence of chitin as a component of the skeletal fibers of marine sponges. Part I. Verongidae (demospongia: Porifera). J. Exp. Zool. Part B Mol. Dev. Evol. 308B, 347–356 (2007).
Google Scholar
Bowden, D. A. et al. Cold seep epifaunal communities on the Hikurangi Margin, New Zealand: composition, succession, and vulnerability to human activities. PLoS ONE 8, e76869 (2013).
Google Scholar
Georgieva, M. N. et al. Identification of fossil worm tubes from Phanerozoic hydrothermal vents and cold seeps. J. Syst. Palaeontol. 17, 287–329 (2017).
Morganti, T. M. et al. In situ observation of sponge trails suggests common sponge locomotion in the deep central Arctic. Curr. Biol. 31, R368–R370 (2021).
Google Scholar
Maldonado, M. An experimental approach to the ecological significance of microhabitat-scale movement in an encrusting sponge. Mar. Ecol. Prog. Ser. 185, 239–255 (1999).
Google Scholar
Rice, A. L., Thurston, M. H. & New, A. L. Dense aggregations of a hexactinellid sponge, Pheronema carpenteri, in the Porcupine Seabight (northeast Atlantic Ocean), and possible causes. Prog. Oceanogr. 24, 179–196 (1990).
Google Scholar
Roberts, E. M. et al. Oceanographic setting and short-timescale environmental variability at an Arctic seamount sponge ground. Deep. Res. Part I Oceanogr. Res. Pap. 138, 98–113 (2018).
Google Scholar
Purser, A. et al. Ocean floor observation and bathymetry system (OFOBS): a new towed camera/sonar system for deep-sea habitat surveys. IEEE J. Ocean. Eng. 44, 1–13 (2019).
Marcon, Y. & Purser, A. PAPARA(ZZ)I: an open-source software interface for annotating photographs of the deep-sea. SoftwareX 6, 69–80 (2017).
Google Scholar
Morganti, T. M., Ribes, M., Yahel, G. & Coma, R. Size is the major determinant of pumping rates in marine sponges. Front. Physiol. 10, 1474 (2019).
Google Scholar
Zelles, L. Phospholipid fatty acid profiles in selected members of soil microbial communities. Chemosphere 35, 275–294 (1997).
Google Scholar
Volkman, J. K., Jeffrey, S. W., Nichols, P. D., Rogers, G. I. & Garland, C. D. Fatty acid and lipid composition of 10 species of microalgae used in mariculture. J. Exp. Mar. Bio. Ecol. 128, 219–240 (1989).
Google Scholar
Koopmans, M. et al. Seasonal variation of fatty acids and stable carbon isotopes in sponges as indicators for nutrition: biomarkers in sponges identified. Mar. Biotechnol. 17, 43–54 (2015).
Google Scholar
Mollenhauer, G., Grotheer, H., Gentz, T., Bonk, E. & Hefter, J. Standard operation procedures and performance of the MICADAS radiocarbon laboratory at Alfred Wegener Institute (AWI). Ger. Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. At. 496, 45–51 (2021).
Google Scholar
Fallon, S. J., James, K., Norman, R., Kelly, M. & Ellwood, M. J. A simple radiocarbon dating method for determining the age and growth rate of deep-sea sponges. Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. At. 268, 1241–1243 (2010).
Google Scholar
Griffith, D. R. et al. Carbon dynamics in the western Arctic Ocean: insights from full-depth carbon isotope profiles of DIC, DOC, and POC. Biogeosciences 9, 1217–1224 (2012).
Google Scholar
Callahan, B. J. et al. DADA2: high-resolution sample inference from Illumina amplicon data. Nat. Methods 13, 581–583 (2016).
Google Scholar
Segata, N. et al. Metagenomic biomarker discovery and explanation. Genome Biol. 12, R60 (2011).
Google Scholar
Bolger, A. M., Lohse, M. & Usadel, B. Trimmomatic: a flexible trimmer for Illumina sequence data. Bioinformatics 30, 2114–2120 (2014).
Google Scholar
Li, D. et al. MEGAHIT v1.0: a fast and scalable metagenome assembler driven by advanced methodologies and community practices. Methods 102, 3–11 (2016).
Google Scholar
Parks, D. H., Imelfort, M., Skennerton, C. T., Hugenholtz, P. & Tyson, G. W. CheckM: assessing the quality of microbial genomes recovered from isolates, single cells, and metagenomes. Genome Res. 25, 1043–1055 (2015).
Google Scholar
Grabherr, M. G. et al. Full-length transcriptome assembly from RNA-Seq data without a reference genome. Nat. Biotechnol. 29, 644–652 (2011).
Google Scholar
Finn, R. D., Clements, J. & Eddy, S. R. HMMER web server: interactive sequence similarity searching. Nucleic Acids Res. 39, W29–W37 (2011).
Google Scholar
Finn, R. D. et al. Pfam: the protein families database. Nucleic Acids Res. 42, D222–D230 (2014).
Google Scholar
Langmead, B. & Salzberg, S. L. Fast gapped-read alignment with Bowtie 2. Nat. Methods 9, 357–359 (2012).
Google Scholar
De Anda, V. et al. MEBS, a software platform to evaluate large (meta)genomic collections according to their metabolic machinery: unraveling the sulfur cycle. Gigascience 6, 1–17 (2017).
Google Scholar
Benner, R., Benitez-Nelson, B., Kaiser, K. & Amon, R. M. W. Export of young terrigenous dissolved organic carbon from rivers to the Arctic Ocean. Geophys. Res. Lett. 31, 10–13 (2004).
Thibodeau, B., Bauch, D. & Voss, M. Nitrogen dynamic in Eurasian coastal Arctic ecosystem: Insight from nitrogen isotope. Glob. Biogeochem. Cycles 31, 836–849 (2017).
Google Scholar
Jackson, A. L., Inger, R., Parnell, A. C. & Bearhop, S. Comparing isotopic niche widths among and within communities: SIBER – Stable Isotope Bayesian Ellipses in R. J. Anim. Ecol. 80, 595–602 (2011).
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