Seasonality of feeding activity in Antarctic suspension feeders
The feeding activity of four benthic suspension-feeding groups (bryozoans, hydroids, polychaetes and holothurians) was monitored in situ every month for a 2-year period at Signy Island in the maritime Antarctic. The bryozoans were monitored at species level, whereas the other taxa could be different...
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1995
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Online Access: | http://nora.nerc.ac.uk/id/eprint/515419/ https://doi.org/10.1007/BF00238483 |
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ftnerc:oai:nora.nerc.ac.uk:515419 2023-05-15T13:49:33+02:00 Seasonality of feeding activity in Antarctic suspension feeders Barnes, David K.A. Clarke, Andrew 1995-05 http://nora.nerc.ac.uk/id/eprint/515419/ https://doi.org/10.1007/BF00238483 unknown Springer Barnes, David K.A. orcid:0000-0002-9076-7867 Clarke, Andrew orcid:0000-0002-7582-3074 . 1995 Seasonality of feeding activity in Antarctic suspension feeders. Polar Biology, 15 (5). 335-340. https://doi.org/10.1007/BF00238483 <https://doi.org/10.1007/BF00238483> Publication - Article PeerReviewed 1995 ftnerc https://doi.org/10.1007/BF00238483 2023-02-04T19:44:02Z The feeding activity of four benthic suspension-feeding groups (bryozoans, hydroids, polychaetes and holothurians) was monitored in situ every month for a 2-year period at Signy Island in the maritime Antarctic. The bryozoans were monitored at species level, whereas the other taxa could be differentiated only to genus. A marked seasonal variation in feeding activity was observed in most taxa. Although environmental parameters such as sea water temperature, fastice duration and water column chlorophyll concentrations suggested that winter in the maritime Antarctic lasts for about 6 months, many animals ceased feeding only for a short period of 2 or 3 months around the middle of the austral winter (June/July). These suspension feeders must therefore be efficient at utilising the low concentration of the microplankton existing in the water column for much of the year. Comparison with environmental variables suggested several possible cues for changes in feeding activity, but these cues may differ between taxa. Photoperiod and changes in disturbance by water movement (both mediated by ice), and food concentration are likely to be important environmental cues for polar suspension feeders. Article in Journal/Newspaper Antarc* Antarctic Polar Biology Signy Island Natural Environment Research Council: NERC Open Research Archive Antarctic Austral Signy Island ENVELOPE(-45.595,-45.595,-60.708,-60.708) Polar Biology 15 5 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
description |
The feeding activity of four benthic suspension-feeding groups (bryozoans, hydroids, polychaetes and holothurians) was monitored in situ every month for a 2-year period at Signy Island in the maritime Antarctic. The bryozoans were monitored at species level, whereas the other taxa could be differentiated only to genus. A marked seasonal variation in feeding activity was observed in most taxa. Although environmental parameters such as sea water temperature, fastice duration and water column chlorophyll concentrations suggested that winter in the maritime Antarctic lasts for about 6 months, many animals ceased feeding only for a short period of 2 or 3 months around the middle of the austral winter (June/July). These suspension feeders must therefore be efficient at utilising the low concentration of the microplankton existing in the water column for much of the year. Comparison with environmental variables suggested several possible cues for changes in feeding activity, but these cues may differ between taxa. Photoperiod and changes in disturbance by water movement (both mediated by ice), and food concentration are likely to be important environmental cues for polar suspension feeders. |
format |
Article in Journal/Newspaper |
author |
Barnes, David K.A. Clarke, Andrew |
spellingShingle |
Barnes, David K.A. Clarke, Andrew Seasonality of feeding activity in Antarctic suspension feeders |
author_facet |
Barnes, David K.A. Clarke, Andrew |
author_sort |
Barnes, David K.A. |
title |
Seasonality of feeding activity in Antarctic suspension feeders |
title_short |
Seasonality of feeding activity in Antarctic suspension feeders |
title_full |
Seasonality of feeding activity in Antarctic suspension feeders |
title_fullStr |
Seasonality of feeding activity in Antarctic suspension feeders |
title_full_unstemmed |
Seasonality of feeding activity in Antarctic suspension feeders |
title_sort |
seasonality of feeding activity in antarctic suspension feeders |
publisher |
Springer |
publishDate |
1995 |
url |
http://nora.nerc.ac.uk/id/eprint/515419/ https://doi.org/10.1007/BF00238483 |
long_lat |
ENVELOPE(-45.595,-45.595,-60.708,-60.708) |
geographic |
Antarctic Austral Signy Island |
geographic_facet |
Antarctic Austral Signy Island |
genre |
Antarc* Antarctic Polar Biology Signy Island |
genre_facet |
Antarc* Antarctic Polar Biology Signy Island |
op_relation |
Barnes, David K.A. orcid:0000-0002-9076-7867 Clarke, Andrew orcid:0000-0002-7582-3074 . 1995 Seasonality of feeding activity in Antarctic suspension feeders. Polar Biology, 15 (5). 335-340. https://doi.org/10.1007/BF00238483 <https://doi.org/10.1007/BF00238483> |
op_doi |
https://doi.org/10.1007/BF00238483 |
container_title |
Polar Biology |
container_volume |
15 |
container_issue |
5 |
_version_ |
1766251608756191232 |