The influence of ice scour on benthic communities at three contrasting sites at Adelaide Island, Antarctica
Abstract Ice scouring is a key structuring force acting on high latitude shallow benthic communities. Despite its importance, detailed studies of scoured communities are still rare. Here we report the ecological effects of 12 iceberg impacts, across three contrasting study sites, at Adelaide Island,...
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crwiley:10.1111/j.1442-9993.2007.01776.x 2024-09-09T18:55:13+00:00 The influence of ice scour on benthic communities at three contrasting sites at Adelaide Island, Antarctica SMALE, DAN A. BARNES, DAVID K. A. FRASER, KEIRON P. P. 2007 http://dx.doi.org/10.1111/j.1442-9993.2007.01776.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1442-9993.2007.01776.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1442-9993.2007.01776.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Austral Ecology volume 32, issue 8, page 878-888 ISSN 1442-9985 1442-9993 journal-article 2007 crwiley https://doi.org/10.1111/j.1442-9993.2007.01776.x 2024-08-27T04:31:46Z Abstract Ice scouring is a key structuring force acting on high latitude shallow benthic communities. Despite its importance, detailed studies of scoured communities are still rare. Here we report the ecological effects of 12 iceberg impacts, across three contrasting study sites, at Adelaide Island, West Antarctic Peninsula. Grounded icebergs were marked with GPS and the newly formed scours (at 10–17 m depth) were sampled within 20 days of formation. Comparisons between scoured and adjacent unscoured assemblages were made using measures of abundance, biomass, taxon richness and the relative abundance of secondary consumers. Ice scouring was catastrophic at all sites, despite differences in substratum type, exposure and background community. Compared with undisturbed areas, scour assemblages were 95% lower in mean macrofaunal abundance and 75.9% lower in species richness. There was no general trend across all sites of ice scouring selecting for secondary consumers. The echinoid Sterechinus neumayeri and bivalve mollusc Mysella charcoti were highly abundant in undisturbed areas and were the biggest contributors to the observed differences between scours and undisturbed areas. Article in Journal/Newspaper Adelaide Island Antarc* Antarctic Antarctic Peninsula Antarctica Iceberg* Wiley Online Library Adelaide Island ENVELOPE(-68.914,-68.914,-67.762,-67.762) Antarctic Antarctic Peninsula Austral Ecology 32 8 878 888 |
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Wiley Online Library |
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crwiley |
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English |
description |
Abstract Ice scouring is a key structuring force acting on high latitude shallow benthic communities. Despite its importance, detailed studies of scoured communities are still rare. Here we report the ecological effects of 12 iceberg impacts, across three contrasting study sites, at Adelaide Island, West Antarctic Peninsula. Grounded icebergs were marked with GPS and the newly formed scours (at 10–17 m depth) were sampled within 20 days of formation. Comparisons between scoured and adjacent unscoured assemblages were made using measures of abundance, biomass, taxon richness and the relative abundance of secondary consumers. Ice scouring was catastrophic at all sites, despite differences in substratum type, exposure and background community. Compared with undisturbed areas, scour assemblages were 95% lower in mean macrofaunal abundance and 75.9% lower in species richness. There was no general trend across all sites of ice scouring selecting for secondary consumers. The echinoid Sterechinus neumayeri and bivalve mollusc Mysella charcoti were highly abundant in undisturbed areas and were the biggest contributors to the observed differences between scours and undisturbed areas. |
format |
Article in Journal/Newspaper |
author |
SMALE, DAN A. BARNES, DAVID K. A. FRASER, KEIRON P. P. |
spellingShingle |
SMALE, DAN A. BARNES, DAVID K. A. FRASER, KEIRON P. P. The influence of ice scour on benthic communities at three contrasting sites at Adelaide Island, Antarctica |
author_facet |
SMALE, DAN A. BARNES, DAVID K. A. FRASER, KEIRON P. P. |
author_sort |
SMALE, DAN A. |
title |
The influence of ice scour on benthic communities at three contrasting sites at Adelaide Island, Antarctica |
title_short |
The influence of ice scour on benthic communities at three contrasting sites at Adelaide Island, Antarctica |
title_full |
The influence of ice scour on benthic communities at three contrasting sites at Adelaide Island, Antarctica |
title_fullStr |
The influence of ice scour on benthic communities at three contrasting sites at Adelaide Island, Antarctica |
title_full_unstemmed |
The influence of ice scour on benthic communities at three contrasting sites at Adelaide Island, Antarctica |
title_sort |
influence of ice scour on benthic communities at three contrasting sites at adelaide island, antarctica |
publisher |
Wiley |
publishDate |
2007 |
url |
http://dx.doi.org/10.1111/j.1442-9993.2007.01776.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1442-9993.2007.01776.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1442-9993.2007.01776.x |
long_lat |
ENVELOPE(-68.914,-68.914,-67.762,-67.762) |
geographic |
Adelaide Island Antarctic Antarctic Peninsula |
geographic_facet |
Adelaide Island Antarctic Antarctic Peninsula |
genre |
Adelaide Island Antarc* Antarctic Antarctic Peninsula Antarctica Iceberg* |
genre_facet |
Adelaide Island Antarc* Antarctic Antarctic Peninsula Antarctica Iceberg* |
op_source |
Austral Ecology volume 32, issue 8, page 878-888 ISSN 1442-9985 1442-9993 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1442-9993.2007.01776.x |
container_title |
Austral Ecology |
container_volume |
32 |
container_issue |
8 |
container_start_page |
878 |
op_container_end_page |
888 |
_version_ |
1809895953785683968 |