Diversity, abundance and community structure of benthic macro- and megafauna on the Beaufort shelf and slope.
Diversity and community patterns of macro- and megafauna were compared on the Canadian Beaufort shelf and slope. Faunal sampling collected 247 taxa from 48 stations with box core and trawl gear over the summers of 2009-2011 between 50 and 1,000 m in depth. Of the 80 macrofaunal and 167 megafaunal ta...
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ftdoajarticles:oai:doaj.org/article:4d68a0a80c5249f0b76d73fe2306a6df 2023-05-15T18:18:39+02:00 Diversity, abundance and community structure of benthic macro- and megafauna on the Beaufort shelf and slope. Jessica Nephin S Kim Juniper Philippe Archambault 2014-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0101556 https://doaj.org/article/4d68a0a80c5249f0b76d73fe2306a6df EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC4090152?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0101556 https://doaj.org/article/4d68a0a80c5249f0b76d73fe2306a6df PLoS ONE, Vol 9, Iss 7, p e101556 (2014) Medicine R Science Q article 2014 ftdoajarticles https://doi.org/10.1371/journal.pone.0101556 2022-12-31T06:03:55Z Diversity and community patterns of macro- and megafauna were compared on the Canadian Beaufort shelf and slope. Faunal sampling collected 247 taxa from 48 stations with box core and trawl gear over the summers of 2009-2011 between 50 and 1,000 m in depth. Of the 80 macrofaunal and 167 megafaunal taxa, 23% were uniques, present at only one station. Rare taxa were found to increase proportional to total taxa richness and differ between the shelf (< 100 m) where they tended to be sparse and the slope where they were relatively abundant. The macrofauna principally comprised polychaetes with nephtyid polychaetes dominant on the shelf and maldanid polychaetes (up to 92% in relative abundance/station) dominant on the slope. The megafauna principally comprised echinoderms with Ophiocten sp. (up to 90% in relative abundance/station) dominant on the shelf and Ophiopleura sp. dominant on the slope. Macro- and megafauna had divergent patterns of abundance, taxa richness (α diversity) and β diversity. A greater degree of macrofaunal than megafaunal variation in abundance, richness and β diversity was explained by confounding factors: location (east-west), sampling year and the timing of sampling with respect to sea-ice conditions. Change in megafaunal abundance, richness and β diversity was greatest across the depth gradient, with total abundance and richness elevated on the shelf compared to the slope. We conclude that megafaunal slope taxa were differentiated from shelf taxa, as faunal replacement not nestedness appears to be the main driver of megafaunal β diversity across the depth gradient. Article in Journal/Newspaper Sea ice Directory of Open Access Journals: DOAJ Articles Beaufort Shelf ENVELOPE(-142.500,-142.500,70.000,70.000) PLoS ONE 9 7 e101556 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Medicine R Science Q |
spellingShingle |
Medicine R Science Q Jessica Nephin S Kim Juniper Philippe Archambault Diversity, abundance and community structure of benthic macro- and megafauna on the Beaufort shelf and slope. |
topic_facet |
Medicine R Science Q |
description |
Diversity and community patterns of macro- and megafauna were compared on the Canadian Beaufort shelf and slope. Faunal sampling collected 247 taxa from 48 stations with box core and trawl gear over the summers of 2009-2011 between 50 and 1,000 m in depth. Of the 80 macrofaunal and 167 megafaunal taxa, 23% were uniques, present at only one station. Rare taxa were found to increase proportional to total taxa richness and differ between the shelf (< 100 m) where they tended to be sparse and the slope where they were relatively abundant. The macrofauna principally comprised polychaetes with nephtyid polychaetes dominant on the shelf and maldanid polychaetes (up to 92% in relative abundance/station) dominant on the slope. The megafauna principally comprised echinoderms with Ophiocten sp. (up to 90% in relative abundance/station) dominant on the shelf and Ophiopleura sp. dominant on the slope. Macro- and megafauna had divergent patterns of abundance, taxa richness (α diversity) and β diversity. A greater degree of macrofaunal than megafaunal variation in abundance, richness and β diversity was explained by confounding factors: location (east-west), sampling year and the timing of sampling with respect to sea-ice conditions. Change in megafaunal abundance, richness and β diversity was greatest across the depth gradient, with total abundance and richness elevated on the shelf compared to the slope. We conclude that megafaunal slope taxa were differentiated from shelf taxa, as faunal replacement not nestedness appears to be the main driver of megafaunal β diversity across the depth gradient. |
format |
Article in Journal/Newspaper |
author |
Jessica Nephin S Kim Juniper Philippe Archambault |
author_facet |
Jessica Nephin S Kim Juniper Philippe Archambault |
author_sort |
Jessica Nephin |
title |
Diversity, abundance and community structure of benthic macro- and megafauna on the Beaufort shelf and slope. |
title_short |
Diversity, abundance and community structure of benthic macro- and megafauna on the Beaufort shelf and slope. |
title_full |
Diversity, abundance and community structure of benthic macro- and megafauna on the Beaufort shelf and slope. |
title_fullStr |
Diversity, abundance and community structure of benthic macro- and megafauna on the Beaufort shelf and slope. |
title_full_unstemmed |
Diversity, abundance and community structure of benthic macro- and megafauna on the Beaufort shelf and slope. |
title_sort |
diversity, abundance and community structure of benthic macro- and megafauna on the beaufort shelf and slope. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2014 |
url |
https://doi.org/10.1371/journal.pone.0101556 https://doaj.org/article/4d68a0a80c5249f0b76d73fe2306a6df |
long_lat |
ENVELOPE(-142.500,-142.500,70.000,70.000) |
geographic |
Beaufort Shelf |
geographic_facet |
Beaufort Shelf |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
PLoS ONE, Vol 9, Iss 7, p e101556 (2014) |
op_relation |
http://europepmc.org/articles/PMC4090152?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0101556 https://doaj.org/article/4d68a0a80c5249f0b76d73fe2306a6df |
op_doi |
https://doi.org/10.1371/journal.pone.0101556 |
container_title |
PLoS ONE |
container_volume |
9 |
container_issue |
7 |
container_start_page |
e101556 |
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1766195300602478592 |