Chemosynthesis influences food web and community structure in high-Arctic benthos
Source at https://doi.org/10.3354/meps13101. Cold seeps are locations where seafloor communities are influenced by the seepage of methane and other reduced compounds from the seabed. We examined macro-infaunal benthos through community analysis and trophic structure using stable isotope analysis at...
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Language: | English |
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Inter Research
2019
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Online Access: | https://hdl.handle.net/10037/16522 https://doi.org/10.3354/meps13101 |
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ftunivtroemsoe:oai:munin.uit.no:10037/16522 2023-05-15T14:23:29+02:00 Chemosynthesis influences food web and community structure in high-Arctic benthos Åström, Emmelie Carroll, Michael Sen, Arunima Niemann, Helge Ambrose Jr., William G. Lehmann, Moritz F Carroll, JoLynn 2019-10-25 https://hdl.handle.net/10037/16522 https://doi.org/10.3354/meps13101 eng eng Inter Research Marine Ecology Progress Series info:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/ Åström, E.K.L., Carroll, M.L., Sen, A., Niemann, H., Ambrose Jr., W.G., Lehmann, M.F. & Carroll, J. (2019). Chemosynthesis influences food web and community structure in high-Arctic benthos. Marine Ecology Progress Series, 629 , 19-42. https://doi.org/10.3354/meps13101 FRIDAID 1741512 doi:10.3354/meps13101 0171-8630 1616-1599 https://hdl.handle.net/10037/16522 openAccess VDP::Mathematics and natural science: 400::Geosciences: 450 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Cold seeps Benthos Methane Trophic structure Stable isotopes Barents Sea Svalbard Journal article Tidsskriftartikkel Peer reviewed 2019 ftunivtroemsoe https://doi.org/10.3354/meps13101 2021-06-25T17:56:54Z Source at https://doi.org/10.3354/meps13101. Cold seeps are locations where seafloor communities are influenced by the seepage of methane and other reduced compounds from the seabed. We examined macro-infaunal benthos through community analysis and trophic structure using stable isotope analysis at 3 seep locations in the Barents Sea. These seeps were characterized by high densities of the chemosymbiotic polychaetes Siboglinidae, clade Frenulata (up to 32120 ind. m -2 ), and thyasirid bivalves, Mendicula cf. pygmaea (up to 4770 ind. m -2 ). We detected low δ 13 C signatures in chemosymbiotic polychaetes and in 3 species of omnivorous/predatory polychaetes. These δ 13 C signatures indicate the input of chemosynthesis-based carbon (CBC) into the food web. Applying a 2-source mixing model, we demonstrated that 28-41% of the nutrition of non-chemosymbiotic polychaetes originates from CBC. We also documented large community variations and small-scale variability within and among the investigated seeps, showing that the impact of seepage on faunal community structure transcends geographic boundaries within the Barents Sea. Moreover, aggregations of heterotrophic macro- and megafauna associated with characteristic seep features (microbial mats, carbonate outcrops, and chemosymbiotic worm-tufts) add 3-dimensional structure and habitat complexity to the seafloor. Cold seeps contribute to the hydrocarbon-derived chemoautotrophy component of these ecosystems and to habitat complexity. These characteristics make the cold seeps of potential high ecological relevance in the functioning of the larger Arctic-Barents Sea ecosystem Article in Journal/Newspaper Arctic Arctic Barents Sea Svalbard University of Tromsø: Munin Open Research Archive Arctic Barents Sea Svalbard Marine Ecology Progress Series 629 19 42 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Geosciences: 450 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Cold seeps Benthos Methane Trophic structure Stable isotopes Barents Sea Svalbard |
spellingShingle |
VDP::Mathematics and natural science: 400::Geosciences: 450 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Cold seeps Benthos Methane Trophic structure Stable isotopes Barents Sea Svalbard Åström, Emmelie Carroll, Michael Sen, Arunima Niemann, Helge Ambrose Jr., William G. Lehmann, Moritz F Carroll, JoLynn Chemosynthesis influences food web and community structure in high-Arctic benthos |
topic_facet |
VDP::Mathematics and natural science: 400::Geosciences: 450 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Cold seeps Benthos Methane Trophic structure Stable isotopes Barents Sea Svalbard |
description |
Source at https://doi.org/10.3354/meps13101. Cold seeps are locations where seafloor communities are influenced by the seepage of methane and other reduced compounds from the seabed. We examined macro-infaunal benthos through community analysis and trophic structure using stable isotope analysis at 3 seep locations in the Barents Sea. These seeps were characterized by high densities of the chemosymbiotic polychaetes Siboglinidae, clade Frenulata (up to 32120 ind. m -2 ), and thyasirid bivalves, Mendicula cf. pygmaea (up to 4770 ind. m -2 ). We detected low δ 13 C signatures in chemosymbiotic polychaetes and in 3 species of omnivorous/predatory polychaetes. These δ 13 C signatures indicate the input of chemosynthesis-based carbon (CBC) into the food web. Applying a 2-source mixing model, we demonstrated that 28-41% of the nutrition of non-chemosymbiotic polychaetes originates from CBC. We also documented large community variations and small-scale variability within and among the investigated seeps, showing that the impact of seepage on faunal community structure transcends geographic boundaries within the Barents Sea. Moreover, aggregations of heterotrophic macro- and megafauna associated with characteristic seep features (microbial mats, carbonate outcrops, and chemosymbiotic worm-tufts) add 3-dimensional structure and habitat complexity to the seafloor. Cold seeps contribute to the hydrocarbon-derived chemoautotrophy component of these ecosystems and to habitat complexity. These characteristics make the cold seeps of potential high ecological relevance in the functioning of the larger Arctic-Barents Sea ecosystem |
format |
Article in Journal/Newspaper |
author |
Åström, Emmelie Carroll, Michael Sen, Arunima Niemann, Helge Ambrose Jr., William G. Lehmann, Moritz F Carroll, JoLynn |
author_facet |
Åström, Emmelie Carroll, Michael Sen, Arunima Niemann, Helge Ambrose Jr., William G. Lehmann, Moritz F Carroll, JoLynn |
author_sort |
Åström, Emmelie |
title |
Chemosynthesis influences food web and community structure in high-Arctic benthos |
title_short |
Chemosynthesis influences food web and community structure in high-Arctic benthos |
title_full |
Chemosynthesis influences food web and community structure in high-Arctic benthos |
title_fullStr |
Chemosynthesis influences food web and community structure in high-Arctic benthos |
title_full_unstemmed |
Chemosynthesis influences food web and community structure in high-Arctic benthos |
title_sort |
chemosynthesis influences food web and community structure in high-arctic benthos |
publisher |
Inter Research |
publishDate |
2019 |
url |
https://hdl.handle.net/10037/16522 https://doi.org/10.3354/meps13101 |
geographic |
Arctic Barents Sea Svalbard |
geographic_facet |
Arctic Barents Sea Svalbard |
genre |
Arctic Arctic Barents Sea Svalbard |
genre_facet |
Arctic Arctic Barents Sea Svalbard |
op_relation |
Marine Ecology Progress Series info:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/ Åström, E.K.L., Carroll, M.L., Sen, A., Niemann, H., Ambrose Jr., W.G., Lehmann, M.F. & Carroll, J. (2019). Chemosynthesis influences food web and community structure in high-Arctic benthos. Marine Ecology Progress Series, 629 , 19-42. https://doi.org/10.3354/meps13101 FRIDAID 1741512 doi:10.3354/meps13101 0171-8630 1616-1599 https://hdl.handle.net/10037/16522 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.3354/meps13101 |
container_title |
Marine Ecology Progress Series |
container_volume |
629 |
container_start_page |
19 |
op_container_end_page |
42 |
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1766296029572890624 |