Benthic community development in Antarctica: recruitment and growth on settlement panels at Signy Island
Identity, quantity and seasonal variation in recruiting invertebrate larvae were investigated at Signy Island, Antarctica. Nine settlement panels were deployed at each of three sites at depths ranging between five and 25 m over a two year experimental period. Longer-term community development was fo...
Published in: | Journal of Experimental Marine Biology and Ecology |
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Elsevier
1997
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Online Access: | http://nora.nerc.ac.uk/id/eprint/514717/ https://doi.org/10.1016/S0022-0981(96)02754-2 |
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ftnerc:oai:nora.nerc.ac.uk:514717 2023-12-24T10:09:37+01:00 Benthic community development in Antarctica: recruitment and growth on settlement panels at Signy Island Stanwell-Smith, Damon Barnes, David K.A. 1997-05 http://nora.nerc.ac.uk/id/eprint/514717/ https://doi.org/10.1016/S0022-0981(96)02754-2 unknown Elsevier Stanwell-Smith, Damon; Barnes, David K.A. orcid:0000-0002-9076-7867 . 1997 Benthic community development in Antarctica: recruitment and growth on settlement panels at Signy Island. Journal of Experimental Marine Biology and Ecology, 212 (1). 61-79. https://doi.org/10.1016/S0022-0981(96)02754-2 <https://doi.org/10.1016/S0022-0981(96)02754-2> Publication - Article PeerReviewed 1997 ftnerc https://doi.org/10.1016/S0022-0981(96)02754-2 2023-11-24T00:03:08Z Identity, quantity and seasonal variation in recruiting invertebrate larvae were investigated at Signy Island, Antarctica. Nine settlement panels were deployed at each of three sites at depths ranging between five and 25 m over a two year experimental period. Longer-term community development was followed using three panels continuously immersed for up to 21 months at each site, with monthly photographs taken in situ. Shorter-term variations in recruitment were studied by regular replacement of triplicate panels, which enabled the measurement of seasonality of recruitment onto artificial substrata in Antarctica, for the first time. Cyclostomatid and cheilostomatid bryozoans, and spirorbinid polychaetes were the dominant colonising taxa both in terms of numbers and area covered. Very low rates of colonisation were observed: <2% of the panels at 5 m, and <6% of the panel areas at 25 m, were covered after 15 months. Whilst little seasonality of recruitment was observed in spirorbinids, that of cheilostomatid bryozoans showed a significant peak between June and February. Successful recuitment levels of colonising taxa suggested seasonal and interannual variation, although not conclusively. Measurement of growth of individual bryozoan colonies was assessed by image analysis of the in situ monthly photographs. Mean growth ranging between 1.7 mm2 (Lacerna eatoni) and 7.1 mm2 (Arachnopusia inchoata) per month were recorded. There was considerable inter- and intra-specific variation of growth of the encrusting cheilostomatid species investigated and this is the first report of such measurements having been made in Antarctica. Article in Journal/Newspaper Antarc* Antarctica Signy Island Natural Environment Research Council: NERC Open Research Archive Signy Island ENVELOPE(-45.595,-45.595,-60.708,-60.708) Journal of Experimental Marine Biology and Ecology 212 1 61 79 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
description |
Identity, quantity and seasonal variation in recruiting invertebrate larvae were investigated at Signy Island, Antarctica. Nine settlement panels were deployed at each of three sites at depths ranging between five and 25 m over a two year experimental period. Longer-term community development was followed using three panels continuously immersed for up to 21 months at each site, with monthly photographs taken in situ. Shorter-term variations in recruitment were studied by regular replacement of triplicate panels, which enabled the measurement of seasonality of recruitment onto artificial substrata in Antarctica, for the first time. Cyclostomatid and cheilostomatid bryozoans, and spirorbinid polychaetes were the dominant colonising taxa both in terms of numbers and area covered. Very low rates of colonisation were observed: <2% of the panels at 5 m, and <6% of the panel areas at 25 m, were covered after 15 months. Whilst little seasonality of recruitment was observed in spirorbinids, that of cheilostomatid bryozoans showed a significant peak between June and February. Successful recuitment levels of colonising taxa suggested seasonal and interannual variation, although not conclusively. Measurement of growth of individual bryozoan colonies was assessed by image analysis of the in situ monthly photographs. Mean growth ranging between 1.7 mm2 (Lacerna eatoni) and 7.1 mm2 (Arachnopusia inchoata) per month were recorded. There was considerable inter- and intra-specific variation of growth of the encrusting cheilostomatid species investigated and this is the first report of such measurements having been made in Antarctica. |
format |
Article in Journal/Newspaper |
author |
Stanwell-Smith, Damon Barnes, David K.A. |
spellingShingle |
Stanwell-Smith, Damon Barnes, David K.A. Benthic community development in Antarctica: recruitment and growth on settlement panels at Signy Island |
author_facet |
Stanwell-Smith, Damon Barnes, David K.A. |
author_sort |
Stanwell-Smith, Damon |
title |
Benthic community development in Antarctica: recruitment and growth on settlement panels at Signy Island |
title_short |
Benthic community development in Antarctica: recruitment and growth on settlement panels at Signy Island |
title_full |
Benthic community development in Antarctica: recruitment and growth on settlement panels at Signy Island |
title_fullStr |
Benthic community development in Antarctica: recruitment and growth on settlement panels at Signy Island |
title_full_unstemmed |
Benthic community development in Antarctica: recruitment and growth on settlement panels at Signy Island |
title_sort |
benthic community development in antarctica: recruitment and growth on settlement panels at signy island |
publisher |
Elsevier |
publishDate |
1997 |
url |
http://nora.nerc.ac.uk/id/eprint/514717/ https://doi.org/10.1016/S0022-0981(96)02754-2 |
long_lat |
ENVELOPE(-45.595,-45.595,-60.708,-60.708) |
geographic |
Signy Island |
geographic_facet |
Signy Island |
genre |
Antarc* Antarctica Signy Island |
genre_facet |
Antarc* Antarctica Signy Island |
op_relation |
Stanwell-Smith, Damon; Barnes, David K.A. orcid:0000-0002-9076-7867 . 1997 Benthic community development in Antarctica: recruitment and growth on settlement panels at Signy Island. Journal of Experimental Marine Biology and Ecology, 212 (1). 61-79. https://doi.org/10.1016/S0022-0981(96)02754-2 <https://doi.org/10.1016/S0022-0981(96)02754-2> |
op_doi |
https://doi.org/10.1016/S0022-0981(96)02754-2 |
container_title |
Journal of Experimental Marine Biology and Ecology |
container_volume |
212 |
container_issue |
1 |
container_start_page |
61 |
op_container_end_page |
79 |
_version_ |
1786209338191249408 |