Polychaete assemblages of the northwestern Ross Sea shelf: worming out the environmental drivers of Antarctic macrobenthic assemblage composition
We have limited understanding of which environmental factors structure the distribution patterns and composition of Antarctic macrobenthos assemblages, and the spatial scales on which such factors operate. In 2004, the “BioRoss Survey” was conducted on the northwestern Ross Sea shelf between Cape Ad...
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ftnerc:oai:nora.nerc.ac.uk:266267 2023-05-15T13:48:07+02:00 Polychaete assemblages of the northwestern Ross Sea shelf: worming out the environmental drivers of Antarctic macrobenthic assemblage composition Kröger, Kerstin Rowden, Ashley A. 2008 application/pdf http://nora.nerc.ac.uk/id/eprint/266267/ https://nora.nerc.ac.uk/id/eprint/266267/1/Kr%C3%83%C2%B6ger_%26_Rowden_2008_Pol_Biol_.pdf https://doi.org/10.1007/s00300-008-0437-9 en eng https://nora.nerc.ac.uk/id/eprint/266267/1/Kr%C3%83%C2%B6ger_%26_Rowden_2008_Pol_Biol_.pdf Kröger, Kerstin; Rowden, Ashley A. 2008 Polychaete assemblages of the northwestern Ross Sea shelf: worming out the environmental drivers of Antarctic macrobenthic assemblage composition. Polar Biology, 31 (8). 971-989. https://doi.org/10.1007/s00300-008-0437-9 <https://doi.org/10.1007/s00300-008-0437-9> Publication - Article PeerReviewed 2008 ftnerc https://doi.org/10.1007/s00300-008-0437-9 2023-02-04T19:35:45Z We have limited understanding of which environmental factors structure the distribution patterns and composition of Antarctic macrobenthos assemblages, and the spatial scales on which such factors operate. In 2004, the “BioRoss Survey” was conducted on the northwestern Ross Sea shelf between Cape Adare and Cape Hallett in depths of 50–750 m to describe and quantify the assemblage patterns of benthic macroinvertebrates. In order to determine the influence of primary productivity, disturbance and habitat heterogeneity on the distribution and composition of the macrofaunal assemblages, polychaete data derived from 52 grab samples were analysed. Although differences in the composition of polychaete assemblages among different sampling transects and depth strata were not particularly pronounced (yet statistically significant), the results suggested that large-scale differences in both primary productivity and iceberg disturbance influence distribution patterns. The combination of sediment chl a content, sorting coefficient, sponge spicule content and distance to the nearest iceberg scour best explained polychaete assemblage patterns. This finding supports previous contentions that multiple environmental drivers working at varying scales influence Antarctic shelf assemblages. The results do not supply support for a pronounced decoupling of pelagic and benthic systems, as has been suggested by another study of deeper water benthic assemblages on the Ross Sea shelf. Article in Journal/Newspaper Antarc* Antarctic Iceberg* Polar Biology Ross Sea Natural Environment Research Council: NERC Open Research Archive Adare ENVELOPE(170.233,170.233,-71.283,-71.283) Antarctic Cape Adare ENVELOPE(175.000,175.000,-71.000,-71.000) Cape Hallett ENVELOPE(170.217,170.217,-72.317,-72.317) Hallett ENVELOPE(170.217,170.217,-72.317,-72.317) Ross Sea Polar Biology 31 8 971 989 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
We have limited understanding of which environmental factors structure the distribution patterns and composition of Antarctic macrobenthos assemblages, and the spatial scales on which such factors operate. In 2004, the “BioRoss Survey” was conducted on the northwestern Ross Sea shelf between Cape Adare and Cape Hallett in depths of 50–750 m to describe and quantify the assemblage patterns of benthic macroinvertebrates. In order to determine the influence of primary productivity, disturbance and habitat heterogeneity on the distribution and composition of the macrofaunal assemblages, polychaete data derived from 52 grab samples were analysed. Although differences in the composition of polychaete assemblages among different sampling transects and depth strata were not particularly pronounced (yet statistically significant), the results suggested that large-scale differences in both primary productivity and iceberg disturbance influence distribution patterns. The combination of sediment chl a content, sorting coefficient, sponge spicule content and distance to the nearest iceberg scour best explained polychaete assemblage patterns. This finding supports previous contentions that multiple environmental drivers working at varying scales influence Antarctic shelf assemblages. The results do not supply support for a pronounced decoupling of pelagic and benthic systems, as has been suggested by another study of deeper water benthic assemblages on the Ross Sea shelf. |
format |
Article in Journal/Newspaper |
author |
Kröger, Kerstin Rowden, Ashley A. |
spellingShingle |
Kröger, Kerstin Rowden, Ashley A. Polychaete assemblages of the northwestern Ross Sea shelf: worming out the environmental drivers of Antarctic macrobenthic assemblage composition |
author_facet |
Kröger, Kerstin Rowden, Ashley A. |
author_sort |
Kröger, Kerstin |
title |
Polychaete assemblages of the northwestern Ross Sea shelf: worming out the environmental drivers of Antarctic macrobenthic assemblage composition |
title_short |
Polychaete assemblages of the northwestern Ross Sea shelf: worming out the environmental drivers of Antarctic macrobenthic assemblage composition |
title_full |
Polychaete assemblages of the northwestern Ross Sea shelf: worming out the environmental drivers of Antarctic macrobenthic assemblage composition |
title_fullStr |
Polychaete assemblages of the northwestern Ross Sea shelf: worming out the environmental drivers of Antarctic macrobenthic assemblage composition |
title_full_unstemmed |
Polychaete assemblages of the northwestern Ross Sea shelf: worming out the environmental drivers of Antarctic macrobenthic assemblage composition |
title_sort |
polychaete assemblages of the northwestern ross sea shelf: worming out the environmental drivers of antarctic macrobenthic assemblage composition |
publishDate |
2008 |
url |
http://nora.nerc.ac.uk/id/eprint/266267/ https://nora.nerc.ac.uk/id/eprint/266267/1/Kr%C3%83%C2%B6ger_%26_Rowden_2008_Pol_Biol_.pdf https://doi.org/10.1007/s00300-008-0437-9 |
long_lat |
ENVELOPE(170.233,170.233,-71.283,-71.283) ENVELOPE(175.000,175.000,-71.000,-71.000) ENVELOPE(170.217,170.217,-72.317,-72.317) ENVELOPE(170.217,170.217,-72.317,-72.317) |
geographic |
Adare Antarctic Cape Adare Cape Hallett Hallett Ross Sea |
geographic_facet |
Adare Antarctic Cape Adare Cape Hallett Hallett Ross Sea |
genre |
Antarc* Antarctic Iceberg* Polar Biology Ross Sea |
genre_facet |
Antarc* Antarctic Iceberg* Polar Biology Ross Sea |
op_relation |
https://nora.nerc.ac.uk/id/eprint/266267/1/Kr%C3%83%C2%B6ger_%26_Rowden_2008_Pol_Biol_.pdf Kröger, Kerstin; Rowden, Ashley A. 2008 Polychaete assemblages of the northwestern Ross Sea shelf: worming out the environmental drivers of Antarctic macrobenthic assemblage composition. Polar Biology, 31 (8). 971-989. https://doi.org/10.1007/s00300-008-0437-9 <https://doi.org/10.1007/s00300-008-0437-9> |
op_doi |
https://doi.org/10.1007/s00300-008-0437-9 |
container_title |
Polar Biology |
container_volume |
31 |
container_issue |
8 |
container_start_page |
971 |
op_container_end_page |
989 |
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1766248623234875392 |