Growth rate and its variability in erect Antarctic bryozoans
Climate is altering rapidly in parts of the Arctic and Antarctic but we know little about how marine organisms are responding to, or might respond to such changes. Knowledge of within-taxon variability is the vital context (currently missing) to interpretation of environmental signals. We investigat...
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ftnerc:oai:nora.nerc.ac.uk:696 2024-06-09T07:40:09+00:00 Growth rate and its variability in erect Antarctic bryozoans Barnes, David K.A. Webb, Karen E. Linse, Katrin 2007 http://nora.nerc.ac.uk/id/eprint/696/ https://doi.org/10.1007/s00300-007-0266-2 unknown Springer Barnes, David K.A. orcid:0000-0002-9076-7867 Webb, Karen E.; Linse, Katrin orcid:0000-0003-3477-3047 . 2007 Growth rate and its variability in erect Antarctic bryozoans. Polar Biology, 30 (8). 1069-1081. https://doi.org/10.1007/s00300-007-0266-2 <https://doi.org/10.1007/s00300-007-0266-2> Zoology Publication - Article PeerReviewed 2007 ftnerc https://doi.org/10.1007/s00300-007-0266-2 2024-05-15T08:39:04Z Climate is altering rapidly in parts of the Arctic and Antarctic but we know little about how marine organisms are responding to, or might respond to such changes. Knowledge of within-taxon variability is the vital context (currently missing) to interpretation of environmental signals. We investigated growth in six species and three genera of erect Antarctic bryozoans, an ideal model taxon to investigate such response. Cellarinella margueritae, C. nodulata, C. rogickae, C. watersi, Melicerita obliqua and Stomhypselosaria watersi, extended 3.4, 5.2, 4.6, 4.1, 4.9 and 4.5 mm year−1 and synthesised 24, 55, 45, 176, 34 and 46 mg CaCO3 year−1, respectively. The maximum ages of these species ranged from 11 to 15 years except M. obliqua, which reached 32 years. This is the first investigation of growth rates of closely related Antarctic invertebrate species and reports the slowest growth rates of bryozoans known from anywhere to date. Our data coupled with that from literature shows that Antarctic bryozoan growth varies <<101 between species, 101 between genera, 102 between morphologies and is ∼101 slower than in tropical or temperate regions. However, within encrusting types the slowest growing species grow at similar rates from poles to tropics. Age was a strong confounding factor across our Antarctic study species but age-standardised data showed a possible decline in annual growth from 1992 to 2003. We identify several factors increasing this environmental signal strength, including (1) the importance of generic (though not necessarily species) identification and (2) use of dry-mass or ash-free dry-mass as the measures of growth. Article in Journal/Newspaper Antarc* Antarctic Arctic Polar Biology Natural Environment Research Council: NERC Open Research Archive Arctic Antarctic Polar Biology 30 8 1069 1081 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Zoology |
spellingShingle |
Zoology Barnes, David K.A. Webb, Karen E. Linse, Katrin Growth rate and its variability in erect Antarctic bryozoans |
topic_facet |
Zoology |
description |
Climate is altering rapidly in parts of the Arctic and Antarctic but we know little about how marine organisms are responding to, or might respond to such changes. Knowledge of within-taxon variability is the vital context (currently missing) to interpretation of environmental signals. We investigated growth in six species and three genera of erect Antarctic bryozoans, an ideal model taxon to investigate such response. Cellarinella margueritae, C. nodulata, C. rogickae, C. watersi, Melicerita obliqua and Stomhypselosaria watersi, extended 3.4, 5.2, 4.6, 4.1, 4.9 and 4.5 mm year−1 and synthesised 24, 55, 45, 176, 34 and 46 mg CaCO3 year−1, respectively. The maximum ages of these species ranged from 11 to 15 years except M. obliqua, which reached 32 years. This is the first investigation of growth rates of closely related Antarctic invertebrate species and reports the slowest growth rates of bryozoans known from anywhere to date. Our data coupled with that from literature shows that Antarctic bryozoan growth varies <<101 between species, 101 between genera, 102 between morphologies and is ∼101 slower than in tropical or temperate regions. However, within encrusting types the slowest growing species grow at similar rates from poles to tropics. Age was a strong confounding factor across our Antarctic study species but age-standardised data showed a possible decline in annual growth from 1992 to 2003. We identify several factors increasing this environmental signal strength, including (1) the importance of generic (though not necessarily species) identification and (2) use of dry-mass or ash-free dry-mass as the measures of growth. |
format |
Article in Journal/Newspaper |
author |
Barnes, David K.A. Webb, Karen E. Linse, Katrin |
author_facet |
Barnes, David K.A. Webb, Karen E. Linse, Katrin |
author_sort |
Barnes, David K.A. |
title |
Growth rate and its variability in erect Antarctic bryozoans |
title_short |
Growth rate and its variability in erect Antarctic bryozoans |
title_full |
Growth rate and its variability in erect Antarctic bryozoans |
title_fullStr |
Growth rate and its variability in erect Antarctic bryozoans |
title_full_unstemmed |
Growth rate and its variability in erect Antarctic bryozoans |
title_sort |
growth rate and its variability in erect antarctic bryozoans |
publisher |
Springer |
publishDate |
2007 |
url |
http://nora.nerc.ac.uk/id/eprint/696/ https://doi.org/10.1007/s00300-007-0266-2 |
geographic |
Arctic Antarctic |
geographic_facet |
Arctic Antarctic |
genre |
Antarc* Antarctic Arctic Polar Biology |
genre_facet |
Antarc* Antarctic Arctic Polar Biology |
op_relation |
Barnes, David K.A. orcid:0000-0002-9076-7867 Webb, Karen E.; Linse, Katrin orcid:0000-0003-3477-3047 . 2007 Growth rate and its variability in erect Antarctic bryozoans. Polar Biology, 30 (8). 1069-1081. https://doi.org/10.1007/s00300-007-0266-2 <https://doi.org/10.1007/s00300-007-0266-2> |
op_doi |
https://doi.org/10.1007/s00300-007-0266-2 |
container_title |
Polar Biology |
container_volume |
30 |
container_issue |
8 |
container_start_page |
1069 |
op_container_end_page |
1081 |
_version_ |
1801383624792080384 |