Benthic community descriptions at underwater peaks in McMurdo Sound, Antarctica
Abstract In McMurdo Sound, Antarctica, fine-scale bathymetry is poorly defined, and benthic communities at water depths over 30 m have not been well described. We describe the benthic communities on two previously unknown bathymetric highs, sampled in 2012 and 2014, using scuba divers, a remotely op...
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crcambridgeupr:10.1017/s0032247422000031 2024-03-03T08:38:19+00:00 Benthic community descriptions at underwater peaks in McMurdo Sound, Antarctica Kim, Stacy Cazenave, François 2022 http://dx.doi.org/10.1017/s0032247422000031 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0032247422000031 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Polar Record volume 58 ISSN 0032-2474 1475-3057 General Earth and Planetary Sciences Ecology Geography, Planning and Development journal-article 2022 crcambridgeupr https://doi.org/10.1017/s0032247422000031 2024-02-08T08:33:34Z Abstract In McMurdo Sound, Antarctica, fine-scale bathymetry is poorly defined, and benthic communities at water depths over 30 m have not been well described. We describe the benthic communities on two previously unknown bathymetric highs, sampled in 2012 and 2014, using scuba divers, a remotely operated vehicle, and a specially designed time-lapse camera system (SeeStar). One site (Mystery Peak) was capped by a dense thicket of the sponge Homaxinella balfourensis , a temporally variable community that likely formed in response to iceberg disturbance. Below the H. balfourensis cap (at 40 m) and at the second site (Tongue Peak, 70 m), the communities conformed to a known ecological pattern driven by food availability from benthic diatoms. Overall, mixed hydroids and bryozoans were the dominant organisms, and at greater depths the sponge Rosella podagrosa also became abundant. Over time, there were only minor changes in these communities on isolated bathymetric highs. Ice is a physical factor that interacts with depth and influences benthic communities through disturbance by icebergs and anchor ice, and through food supply by sea ice coverage. The SeeStar time-lapse camera system performed exceptionally and opens up opportunities for new winter observations in the Antarctic. Article in Journal/Newspaper Antarc* Antarctic Antarctica Iceberg* McMurdo Sound Polar Record Sea ice Cambridge University Press Antarctic The Antarctic McMurdo Sound Tongue Peak ENVELOPE(-153.033,-153.033,-86.567,-86.567) Polar Record 58 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
General Earth and Planetary Sciences Ecology Geography, Planning and Development |
spellingShingle |
General Earth and Planetary Sciences Ecology Geography, Planning and Development Kim, Stacy Cazenave, François Benthic community descriptions at underwater peaks in McMurdo Sound, Antarctica |
topic_facet |
General Earth and Planetary Sciences Ecology Geography, Planning and Development |
description |
Abstract In McMurdo Sound, Antarctica, fine-scale bathymetry is poorly defined, and benthic communities at water depths over 30 m have not been well described. We describe the benthic communities on two previously unknown bathymetric highs, sampled in 2012 and 2014, using scuba divers, a remotely operated vehicle, and a specially designed time-lapse camera system (SeeStar). One site (Mystery Peak) was capped by a dense thicket of the sponge Homaxinella balfourensis , a temporally variable community that likely formed in response to iceberg disturbance. Below the H. balfourensis cap (at 40 m) and at the second site (Tongue Peak, 70 m), the communities conformed to a known ecological pattern driven by food availability from benthic diatoms. Overall, mixed hydroids and bryozoans were the dominant organisms, and at greater depths the sponge Rosella podagrosa also became abundant. Over time, there were only minor changes in these communities on isolated bathymetric highs. Ice is a physical factor that interacts with depth and influences benthic communities through disturbance by icebergs and anchor ice, and through food supply by sea ice coverage. The SeeStar time-lapse camera system performed exceptionally and opens up opportunities for new winter observations in the Antarctic. |
format |
Article in Journal/Newspaper |
author |
Kim, Stacy Cazenave, François |
author_facet |
Kim, Stacy Cazenave, François |
author_sort |
Kim, Stacy |
title |
Benthic community descriptions at underwater peaks in McMurdo Sound, Antarctica |
title_short |
Benthic community descriptions at underwater peaks in McMurdo Sound, Antarctica |
title_full |
Benthic community descriptions at underwater peaks in McMurdo Sound, Antarctica |
title_fullStr |
Benthic community descriptions at underwater peaks in McMurdo Sound, Antarctica |
title_full_unstemmed |
Benthic community descriptions at underwater peaks in McMurdo Sound, Antarctica |
title_sort |
benthic community descriptions at underwater peaks in mcmurdo sound, antarctica |
publisher |
Cambridge University Press (CUP) |
publishDate |
2022 |
url |
http://dx.doi.org/10.1017/s0032247422000031 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0032247422000031 |
long_lat |
ENVELOPE(-153.033,-153.033,-86.567,-86.567) |
geographic |
Antarctic The Antarctic McMurdo Sound Tongue Peak |
geographic_facet |
Antarctic The Antarctic McMurdo Sound Tongue Peak |
genre |
Antarc* Antarctic Antarctica Iceberg* McMurdo Sound Polar Record Sea ice |
genre_facet |
Antarc* Antarctic Antarctica Iceberg* McMurdo Sound Polar Record Sea ice |
op_source |
Polar Record volume 58 ISSN 0032-2474 1475-3057 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0032247422000031 |
container_title |
Polar Record |
container_volume |
58 |
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1792506551777361920 |