Functional Pattern of Benthic Epifauna in the Chukchi Borderland, Arctic Deep Sea
Assessment of Arctic deep-sea ecosystem functioning is currently an urgent task considering that ongoing sea-ice reduction opens opportunities for resource exploitation of yet understudied deep-sea regions. We used Biological Trait Analysis to evaluate ecosystem functioning and test if common paradi...
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Online Access: | https://hdl.handle.net/10037/21991 https://doi.org/10.3389/fmars.2021.609956 |
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ftunivtroemsoe:oai:munin.uit.no:10037/21991 2023-05-15T14:22:48+02:00 Functional Pattern of Benthic Epifauna in the Chukchi Borderland, Arctic Deep Sea Zhulay, Irina Bluhm, Bodil Renaud, Paul E. Degen, Renate Iken, Katrin 2021-05-26 https://hdl.handle.net/10037/21991 https://doi.org/10.3389/fmars.2021.609956 eng eng Frontiers Media Zhulay, I. (2022). Arctic deep-sea benthos: biodiversity, biological traits, and food webs. (Doctoral thesis). https://hdl.handle.net/10037/25336 Frontiers in Marine Science Zhulay, Bluhm, Renaud, Degen, Iken. Functional Pattern of Benthic Epifauna in the Chukchi Borderland, Arctic Deep Sea. Frontiers in Marine Science. 2021;8 FRIDAID 1922728 doi:10.3389/fmars.2021.609956 2296-7745 https://hdl.handle.net/10037/21991 openAccess Copyright 2021 The Author(s) VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2021 ftunivtroemsoe https://doi.org/10.3389/fmars.2021.609956 2022-06-01T22:58:57Z Assessment of Arctic deep-sea ecosystem functioning is currently an urgent task considering that ongoing sea-ice reduction opens opportunities for resource exploitation of yet understudied deep-sea regions. We used Biological Trait Analysis to evaluate ecosystem functioning and test if common paradigms for deep-sea fauna apply to benthic epifauna of the deep-sea Arctic Chukchi Borderland (CBL). We also investigated the influence of environmental factors on the functional structure of the epifauna. The analysis was performed for 106 taxa collected with a beam trawl and a Remotely Operated Vehicle from 486 to 2610 m depth. The most common trait modalities were small-medium size, mobile, benthic direct and lecithotrophic larval development, and predatory feeding, which mostly supports the current view of epifauna in the global deep sea. Functional composition of epifauna differed between two depth strata (486–1059 m and 1882–2610 m), with depth and sediment carbon content explaining most of the functional variability. Proportional abundances of the modalities free-living, swimming, suspension feeders, opportunists/scavengers, internal fertilization and globulose were higher at deep stations. Functional redundancy (FR) was also higher there compared to the mid-depth stations, suggesting adaptation of fauna to the more homogeneous deep environment by fewer and shared traits. Mid-depth stations represented higher functional variability in terms of both trait modality composition and functional diversity, indicating more variable resource use in the more heterogeneous habitat. Food input correlated positively with the proportional abundance of the modalities tube-dwelling, sessile and deposit feeding. Areas with drop stones were associated with higher proportional abundance of the modalities attached, upright, and predators. Comparatively low FR may render the heterogeneous mid-depth area of the CBL vulnerable to disturbance through the risk of loss of functions. Across the study area, high occurrence of taxa with low ... Article in Journal/Newspaper Arctic Arctic Chukchi Sea ice University of Tromsø: Munin Open Research Archive Arctic Chukchi Borderland ENVELOPE(-165.000,-165.000,77.000,77.000) Frontiers in Marine Science 8 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
spellingShingle |
VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Zhulay, Irina Bluhm, Bodil Renaud, Paul E. Degen, Renate Iken, Katrin Functional Pattern of Benthic Epifauna in the Chukchi Borderland, Arctic Deep Sea |
topic_facet |
VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
description |
Assessment of Arctic deep-sea ecosystem functioning is currently an urgent task considering that ongoing sea-ice reduction opens opportunities for resource exploitation of yet understudied deep-sea regions. We used Biological Trait Analysis to evaluate ecosystem functioning and test if common paradigms for deep-sea fauna apply to benthic epifauna of the deep-sea Arctic Chukchi Borderland (CBL). We also investigated the influence of environmental factors on the functional structure of the epifauna. The analysis was performed for 106 taxa collected with a beam trawl and a Remotely Operated Vehicle from 486 to 2610 m depth. The most common trait modalities were small-medium size, mobile, benthic direct and lecithotrophic larval development, and predatory feeding, which mostly supports the current view of epifauna in the global deep sea. Functional composition of epifauna differed between two depth strata (486–1059 m and 1882–2610 m), with depth and sediment carbon content explaining most of the functional variability. Proportional abundances of the modalities free-living, swimming, suspension feeders, opportunists/scavengers, internal fertilization and globulose were higher at deep stations. Functional redundancy (FR) was also higher there compared to the mid-depth stations, suggesting adaptation of fauna to the more homogeneous deep environment by fewer and shared traits. Mid-depth stations represented higher functional variability in terms of both trait modality composition and functional diversity, indicating more variable resource use in the more heterogeneous habitat. Food input correlated positively with the proportional abundance of the modalities tube-dwelling, sessile and deposit feeding. Areas with drop stones were associated with higher proportional abundance of the modalities attached, upright, and predators. Comparatively low FR may render the heterogeneous mid-depth area of the CBL vulnerable to disturbance through the risk of loss of functions. Across the study area, high occurrence of taxa with low ... |
format |
Article in Journal/Newspaper |
author |
Zhulay, Irina Bluhm, Bodil Renaud, Paul E. Degen, Renate Iken, Katrin |
author_facet |
Zhulay, Irina Bluhm, Bodil Renaud, Paul E. Degen, Renate Iken, Katrin |
author_sort |
Zhulay, Irina |
title |
Functional Pattern of Benthic Epifauna in the Chukchi Borderland, Arctic Deep Sea |
title_short |
Functional Pattern of Benthic Epifauna in the Chukchi Borderland, Arctic Deep Sea |
title_full |
Functional Pattern of Benthic Epifauna in the Chukchi Borderland, Arctic Deep Sea |
title_fullStr |
Functional Pattern of Benthic Epifauna in the Chukchi Borderland, Arctic Deep Sea |
title_full_unstemmed |
Functional Pattern of Benthic Epifauna in the Chukchi Borderland, Arctic Deep Sea |
title_sort |
functional pattern of benthic epifauna in the chukchi borderland, arctic deep sea |
publisher |
Frontiers Media |
publishDate |
2021 |
url |
https://hdl.handle.net/10037/21991 https://doi.org/10.3389/fmars.2021.609956 |
long_lat |
ENVELOPE(-165.000,-165.000,77.000,77.000) |
geographic |
Arctic Chukchi Borderland |
geographic_facet |
Arctic Chukchi Borderland |
genre |
Arctic Arctic Chukchi Sea ice |
genre_facet |
Arctic Arctic Chukchi Sea ice |
op_relation |
Zhulay, I. (2022). Arctic deep-sea benthos: biodiversity, biological traits, and food webs. (Doctoral thesis). https://hdl.handle.net/10037/25336 Frontiers in Marine Science Zhulay, Bluhm, Renaud, Degen, Iken. Functional Pattern of Benthic Epifauna in the Chukchi Borderland, Arctic Deep Sea. Frontiers in Marine Science. 2021;8 FRIDAID 1922728 doi:10.3389/fmars.2021.609956 2296-7745 https://hdl.handle.net/10037/21991 |
op_rights |
openAccess Copyright 2021 The Author(s) |
op_doi |
https://doi.org/10.3389/fmars.2021.609956 |
container_title |
Frontiers in Marine Science |
container_volume |
8 |
_version_ |
1766295321294405632 |