Iceberg disturbance to benthic communities in McMurdo Sound, Antarctica
Abstract On the continental shelf of the Antarctic the major disturbance to benthic ecosystems is from iceberg scouring; however, this is based on observations from the Peninsula region. We combine observation and experimentation in the McMurdo Sound region of the Ross Sea to determine if community...
Published in: | Polar Record |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Cambridge University Press (CUP)
2021
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1017/s0032247421000048 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0032247421000048 |
id |
crcambridgeupr:10.1017/s0032247421000048 |
---|---|
record_format |
openpolar |
spelling |
crcambridgeupr:10.1017/s0032247421000048 2024-10-13T14:02:38+00:00 Iceberg disturbance to benthic communities in McMurdo Sound, Antarctica Kim, Stacy Collins, Clint A. 2021 http://dx.doi.org/10.1017/s0032247421000048 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0032247421000048 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Polar Record volume 57 ISSN 0032-2474 1475-3057 journal-article 2021 crcambridgeupr https://doi.org/10.1017/s0032247421000048 2024-09-18T04:03:45Z Abstract On the continental shelf of the Antarctic the major disturbance to benthic ecosystems is from iceberg scouring; however, this is based on observations from the Peninsula region. We combine observation and experimentation in the McMurdo Sound region of the Ross Sea to determine if community recovery patterns there are similar to those in better-studied Antarctic regions, and if local immigration is an important factor in recovery dynamics. We found that regardless of habitat differences in depth, substrate, and oceanographic setting, iceberg disturbance strongly impacted benthic communities in McMurdo Sound. Notably, in shallow water (<30 m) where anchor ice is an annual disturbance, both the benthic communities and recovery processes were more variable than at deeper locations. A manipulative experiment performed in a shallow area indicated that recruitment might be more important than immigration to infaunal community recovery. We conclude that whilst disturbance frequency influences dominant epifauna, recovery from iceberg disturbance is a slow ecological progression that is dependent on the extremely inconsistent recruitment processes of the high Antarctic benthic ecosystem. Article in Journal/Newspaper Antarc* Antarctic Antarctica Iceberg* McMurdo Sound Polar Record Ross Sea Cambridge University Press Antarctic McMurdo Sound Ross Sea The Antarctic Polar Record 57 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
Abstract On the continental shelf of the Antarctic the major disturbance to benthic ecosystems is from iceberg scouring; however, this is based on observations from the Peninsula region. We combine observation and experimentation in the McMurdo Sound region of the Ross Sea to determine if community recovery patterns there are similar to those in better-studied Antarctic regions, and if local immigration is an important factor in recovery dynamics. We found that regardless of habitat differences in depth, substrate, and oceanographic setting, iceberg disturbance strongly impacted benthic communities in McMurdo Sound. Notably, in shallow water (<30 m) where anchor ice is an annual disturbance, both the benthic communities and recovery processes were more variable than at deeper locations. A manipulative experiment performed in a shallow area indicated that recruitment might be more important than immigration to infaunal community recovery. We conclude that whilst disturbance frequency influences dominant epifauna, recovery from iceberg disturbance is a slow ecological progression that is dependent on the extremely inconsistent recruitment processes of the high Antarctic benthic ecosystem. |
format |
Article in Journal/Newspaper |
author |
Kim, Stacy Collins, Clint A. |
spellingShingle |
Kim, Stacy Collins, Clint A. Iceberg disturbance to benthic communities in McMurdo Sound, Antarctica |
author_facet |
Kim, Stacy Collins, Clint A. |
author_sort |
Kim, Stacy |
title |
Iceberg disturbance to benthic communities in McMurdo Sound, Antarctica |
title_short |
Iceberg disturbance to benthic communities in McMurdo Sound, Antarctica |
title_full |
Iceberg disturbance to benthic communities in McMurdo Sound, Antarctica |
title_fullStr |
Iceberg disturbance to benthic communities in McMurdo Sound, Antarctica |
title_full_unstemmed |
Iceberg disturbance to benthic communities in McMurdo Sound, Antarctica |
title_sort |
iceberg disturbance to benthic communities in mcmurdo sound, antarctica |
publisher |
Cambridge University Press (CUP) |
publishDate |
2021 |
url |
http://dx.doi.org/10.1017/s0032247421000048 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0032247421000048 |
geographic |
Antarctic McMurdo Sound Ross Sea The Antarctic |
geographic_facet |
Antarctic McMurdo Sound Ross Sea The Antarctic |
genre |
Antarc* Antarctic Antarctica Iceberg* McMurdo Sound Polar Record Ross Sea |
genre_facet |
Antarc* Antarctic Antarctica Iceberg* McMurdo Sound Polar Record Ross Sea |
op_source |
Polar Record volume 57 ISSN 0032-2474 1475-3057 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0032247421000048 |
container_title |
Polar Record |
container_volume |
57 |
_version_ |
1812818925575995392 |