The impact of sediment deposition and iceberg scour on the Antarctic soft shell clam Laternula elliptica at King George Island, Antarctica
Abstract Recent rapid changes of air temperature on the western side of the Antarctic Peninsula results in increased sediment discharge and ice scouring frequencies in coastal regions. These changes are bound to especially affect slow growing, sessile filter feeders such as the Antarctic bivalve, La...
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Language: | English |
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Cambridge University Press (CUP)
2011
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Online Access: | http://dx.doi.org/10.1017/s0954102010000970 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102010000970 |
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crcambridgeupr:10.1017/s0954102010000970 2024-06-23T07:47:39+00:00 The impact of sediment deposition and iceberg scour on the Antarctic soft shell clam Laternula elliptica at King George Island, Antarctica Philipp, Eva E.R. Husmann, Gunnar Abele, Doris 2011 http://dx.doi.org/10.1017/s0954102010000970 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102010000970 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 23, issue 2, page 127-138 ISSN 0954-1020 1365-2079 journal-article 2011 crcambridgeupr https://doi.org/10.1017/s0954102010000970 2024-05-29T08:09:15Z Abstract Recent rapid changes of air temperature on the western side of the Antarctic Peninsula results in increased sediment discharge and ice scouring frequencies in coastal regions. These changes are bound to especially affect slow growing, sessile filter feeders such as the Antarctic bivalve, Laternula elliptica , a long-lived and abundant key species with circumpolar distribution. We investigated the effect of sedimentation and ice scouring on small/young and large/old individuals at two closely located stations, distinctly influenced by both types of disturbance. Small individuals dealt better with disturbance in terms of their respiratory response to sediment exposure, reburrowing ability, and survival after injury, compared to larger animals. At the more disturbed station L. elliptica population density was lower, but larger animals reburrowed faster after iceberg disturbance and reduced their metabolic rate under strong sediment coverage, compared to larger animals of the less disturbed station, indicating that an adaptation or learning response to both types of disturbance may be possible. Smaller individuals were not influenced. Laternula elliptica seems capable of coping with the rapidly changing environmental conditions. Due to a decrease in population density and mean population lifespan, L. elliptica could however lose its key role in the bentho-pelagic carbon flux in areas of high sediment deposition. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctic Science Antarctica Iceberg* King George Island Cambridge University Press Antarctic Antarctic Peninsula King George Island The Antarctic Antarctic Science 23 2 127 138 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract Recent rapid changes of air temperature on the western side of the Antarctic Peninsula results in increased sediment discharge and ice scouring frequencies in coastal regions. These changes are bound to especially affect slow growing, sessile filter feeders such as the Antarctic bivalve, Laternula elliptica , a long-lived and abundant key species with circumpolar distribution. We investigated the effect of sedimentation and ice scouring on small/young and large/old individuals at two closely located stations, distinctly influenced by both types of disturbance. Small individuals dealt better with disturbance in terms of their respiratory response to sediment exposure, reburrowing ability, and survival after injury, compared to larger animals. At the more disturbed station L. elliptica population density was lower, but larger animals reburrowed faster after iceberg disturbance and reduced their metabolic rate under strong sediment coverage, compared to larger animals of the less disturbed station, indicating that an adaptation or learning response to both types of disturbance may be possible. Smaller individuals were not influenced. Laternula elliptica seems capable of coping with the rapidly changing environmental conditions. Due to a decrease in population density and mean population lifespan, L. elliptica could however lose its key role in the bentho-pelagic carbon flux in areas of high sediment deposition. |
format |
Article in Journal/Newspaper |
author |
Philipp, Eva E.R. Husmann, Gunnar Abele, Doris |
spellingShingle |
Philipp, Eva E.R. Husmann, Gunnar Abele, Doris The impact of sediment deposition and iceberg scour on the Antarctic soft shell clam Laternula elliptica at King George Island, Antarctica |
author_facet |
Philipp, Eva E.R. Husmann, Gunnar Abele, Doris |
author_sort |
Philipp, Eva E.R. |
title |
The impact of sediment deposition and iceberg scour on the Antarctic soft shell clam Laternula elliptica at King George Island, Antarctica |
title_short |
The impact of sediment deposition and iceberg scour on the Antarctic soft shell clam Laternula elliptica at King George Island, Antarctica |
title_full |
The impact of sediment deposition and iceberg scour on the Antarctic soft shell clam Laternula elliptica at King George Island, Antarctica |
title_fullStr |
The impact of sediment deposition and iceberg scour on the Antarctic soft shell clam Laternula elliptica at King George Island, Antarctica |
title_full_unstemmed |
The impact of sediment deposition and iceberg scour on the Antarctic soft shell clam Laternula elliptica at King George Island, Antarctica |
title_sort |
impact of sediment deposition and iceberg scour on the antarctic soft shell clam laternula elliptica at king george island, antarctica |
publisher |
Cambridge University Press (CUP) |
publishDate |
2011 |
url |
http://dx.doi.org/10.1017/s0954102010000970 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102010000970 |
geographic |
Antarctic Antarctic Peninsula King George Island The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula King George Island The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctic Science Antarctica Iceberg* King George Island |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctic Science Antarctica Iceberg* King George Island |
op_source |
Antarctic Science volume 23, issue 2, page 127-138 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102010000970 |
container_title |
Antarctic Science |
container_volume |
23 |
container_issue |
2 |
container_start_page |
127 |
op_container_end_page |
138 |
_version_ |
1802651789046054912 |