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Spatial distribution of benthic macrofauna in the Central Arctic Ocean
Permanent sea-ice cover and low primary productivity in the mostly ice-covered Central Arctic ocean basins result in significantly lower biomass and density of macrobenthos in the abyssal plains compared to the continental slopes. However, little is known on bathymetric and regional effects on the m...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6192560/ https://www.ncbi.nlm.nih.gov/pubmed/30332418 http://dx.doi.org/10.1371/journal.pone.0200121 |
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author | Vedenin, Andrey Gusky, Manuela Gebruk, Andrey Kremenetskaia, Antonina Rybakova, Elena Boetius, Antje |
author_facet | Vedenin, Andrey Gusky, Manuela Gebruk, Andrey Kremenetskaia, Antonina Rybakova, Elena Boetius, Antje |
author_sort | Vedenin, Andrey |
collection | PubMed |
description | Permanent sea-ice cover and low primary productivity in the mostly ice-covered Central Arctic ocean basins result in significantly lower biomass and density of macrobenthos in the abyssal plains compared to the continental slopes. However, little is known on bathymetric and regional effects on the macrobenthos diversity. This study synthesizes new and available macrobenthos data to provide a baseline for future studies of the effects of Arctic change on macrofauna community composition in the Arctic basins. Samples collected during three expeditions (in 1993, 2012 and 2015) at 37 stations on the slope of the Barents and Laptev Seas and in the abyssal of the Nansen and Amundsen Basins in the depth range from 38 m to 4381 m were used for a quantitative analysis of species composition, abundance and biomass. Benthic communities clustered in five depth ranges across the slope and basin. A parabolic pattern of species diversity change with depth was found, with the diversity maximum for macrofauna at the shelf edge at depths of 100–300 m. This deviates from the typical species richness peak at mid-slope depths of 1500–3000 m in temperate oceans. Due to the limited availability of standardized benthos data, it remains difficult to assess if and how the significant sea-ice loss observed in the past decade has affected benthic community composition. The polychaete Ymerana pteropoda and the bryozoan Nolella sp. were found for the first time in the deep Nansen and Amundsen Basins. |
format | Online Article Text |
id | pubmed-6192560 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-61925602018-11-05 Spatial distribution of benthic macrofauna in the Central Arctic Ocean Vedenin, Andrey Gusky, Manuela Gebruk, Andrey Kremenetskaia, Antonina Rybakova, Elena Boetius, Antje PLoS One Research Article Permanent sea-ice cover and low primary productivity in the mostly ice-covered Central Arctic ocean basins result in significantly lower biomass and density of macrobenthos in the abyssal plains compared to the continental slopes. However, little is known on bathymetric and regional effects on the macrobenthos diversity. This study synthesizes new and available macrobenthos data to provide a baseline for future studies of the effects of Arctic change on macrofauna community composition in the Arctic basins. Samples collected during three expeditions (in 1993, 2012 and 2015) at 37 stations on the slope of the Barents and Laptev Seas and in the abyssal of the Nansen and Amundsen Basins in the depth range from 38 m to 4381 m were used for a quantitative analysis of species composition, abundance and biomass. Benthic communities clustered in five depth ranges across the slope and basin. A parabolic pattern of species diversity change with depth was found, with the diversity maximum for macrofauna at the shelf edge at depths of 100–300 m. This deviates from the typical species richness peak at mid-slope depths of 1500–3000 m in temperate oceans. Due to the limited availability of standardized benthos data, it remains difficult to assess if and how the significant sea-ice loss observed in the past decade has affected benthic community composition. The polychaete Ymerana pteropoda and the bryozoan Nolella sp. were found for the first time in the deep Nansen and Amundsen Basins. Public Library of Science 2018-10-17 /pmc/articles/PMC6192560/ /pubmed/30332418 http://dx.doi.org/10.1371/journal.pone.0200121 Text en © 2018 Vedenin et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Vedenin, Andrey Gusky, Manuela Gebruk, Andrey Kremenetskaia, Antonina Rybakova, Elena Boetius, Antje Spatial distribution of benthic macrofauna in the Central Arctic Ocean |
title | Spatial distribution of benthic macrofauna in the Central Arctic Ocean |
title_full | Spatial distribution of benthic macrofauna in the Central Arctic Ocean |
title_fullStr | Spatial distribution of benthic macrofauna in the Central Arctic Ocean |
title_full_unstemmed | Spatial distribution of benthic macrofauna in the Central Arctic Ocean |
title_short | Spatial distribution of benthic macrofauna in the Central Arctic Ocean |
title_sort | spatial distribution of benthic macrofauna in the central arctic ocean |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6192560/ https://www.ncbi.nlm.nih.gov/pubmed/30332418 http://dx.doi.org/10.1371/journal.pone.0200121 |
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