Proxy development: a new facet of morphological diversity in the marine diatom Eucampia antarctica (Castracane) Mangin
The varied aspect ratios observed in the Antarctic marine diatom Eucampia antarctica are described and quantified. Data are compiled from detailed measurements of the gross morphology of winter stage specimens found in samples of modern marine sediments. Surface sediment samples come from a range of...
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Geological Society of London
2014
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Online Access: | http://nora.nerc.ac.uk/id/eprint/507948/ https://nora.nerc.ac.uk/id/eprint/507948/1/JM%2013-025_NORA.pdf https://doi.org/10.1144/jmpaleo2013-025 |
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ftnerc:oai:nora.nerc.ac.uk:507948 2023-05-15T13:24:02+02:00 Proxy development: a new facet of morphological diversity in the marine diatom Eucampia antarctica (Castracane) Mangin Allen, C. S. 2014-09-02 text http://nora.nerc.ac.uk/id/eprint/507948/ https://nora.nerc.ac.uk/id/eprint/507948/1/JM%2013-025_NORA.pdf https://doi.org/10.1144/jmpaleo2013-025 en eng Geological Society of London https://nora.nerc.ac.uk/id/eprint/507948/1/JM%2013-025_NORA.pdf Allen, C. S. orcid:0000-0002-0938-0551 . 2014 Proxy development: a new facet of morphological diversity in the marine diatom Eucampia antarctica (Castracane) Mangin. Journal of Micropalaeontology, 33 (2). 131-142. https://doi.org/10.1144/jmpaleo2013-025 <https://doi.org/10.1144/jmpaleo2013-025> Publication - Article PeerReviewed 2014 ftnerc https://doi.org/10.1144/jmpaleo2013-025 2023-02-04T19:40:04Z The varied aspect ratios observed in the Antarctic marine diatom Eucampia antarctica are described and quantified. Data are compiled from detailed measurements of the gross morphology of winter stage specimens found in samples of modern marine sediments. Surface sediment samples come from a range of oceanographic settings spanning almost 20° of latitude from north of the Polar Front in the SW Atlantic to close to continental Antarctica in the southern Amundsen Sea. Results are compared with previously recorded morphological data ascribed to the polar and sub-polar varieties of E. antarctica (E. antarctica var recta and E. antarctica var antarctica) and reveal that the aspect ratio of both varieties responds independently of symmetry and colony structure. The discussion considers the likely basis of the observed aspect ratio distribution and whether the morphological diversity offers any potential for use as proxy evidence in Antarctic palaeoceanographic reconstructions. Although it requires further study, valve symmetry offers promising potential as a quantitative proxy for austral summer sea surface temperatures. Article in Journal/Newspaper Amundsen Sea Antarc* Antarctic Antarctica E. Antarctica Natural Environment Research Council: NERC Open Research Archive Antarctic The Antarctic Austral Amundsen Sea Recta ENVELOPE(-60.515,-60.515,-62.932,-62.932) Mangin ENVELOPE(-68.483,-68.483,-67.417,-67.417) Journal of Micropalaeontology 33 2 131 142 |
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Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
The varied aspect ratios observed in the Antarctic marine diatom Eucampia antarctica are described and quantified. Data are compiled from detailed measurements of the gross morphology of winter stage specimens found in samples of modern marine sediments. Surface sediment samples come from a range of oceanographic settings spanning almost 20° of latitude from north of the Polar Front in the SW Atlantic to close to continental Antarctica in the southern Amundsen Sea. Results are compared with previously recorded morphological data ascribed to the polar and sub-polar varieties of E. antarctica (E. antarctica var recta and E. antarctica var antarctica) and reveal that the aspect ratio of both varieties responds independently of symmetry and colony structure. The discussion considers the likely basis of the observed aspect ratio distribution and whether the morphological diversity offers any potential for use as proxy evidence in Antarctic palaeoceanographic reconstructions. Although it requires further study, valve symmetry offers promising potential as a quantitative proxy for austral summer sea surface temperatures. |
format |
Article in Journal/Newspaper |
author |
Allen, C. S. |
spellingShingle |
Allen, C. S. Proxy development: a new facet of morphological diversity in the marine diatom Eucampia antarctica (Castracane) Mangin |
author_facet |
Allen, C. S. |
author_sort |
Allen, C. S. |
title |
Proxy development: a new facet of morphological diversity in the marine diatom Eucampia antarctica (Castracane) Mangin |
title_short |
Proxy development: a new facet of morphological diversity in the marine diatom Eucampia antarctica (Castracane) Mangin |
title_full |
Proxy development: a new facet of morphological diversity in the marine diatom Eucampia antarctica (Castracane) Mangin |
title_fullStr |
Proxy development: a new facet of morphological diversity in the marine diatom Eucampia antarctica (Castracane) Mangin |
title_full_unstemmed |
Proxy development: a new facet of morphological diversity in the marine diatom Eucampia antarctica (Castracane) Mangin |
title_sort |
proxy development: a new facet of morphological diversity in the marine diatom eucampia antarctica (castracane) mangin |
publisher |
Geological Society of London |
publishDate |
2014 |
url |
http://nora.nerc.ac.uk/id/eprint/507948/ https://nora.nerc.ac.uk/id/eprint/507948/1/JM%2013-025_NORA.pdf https://doi.org/10.1144/jmpaleo2013-025 |
long_lat |
ENVELOPE(-60.515,-60.515,-62.932,-62.932) ENVELOPE(-68.483,-68.483,-67.417,-67.417) |
geographic |
Antarctic The Antarctic Austral Amundsen Sea Recta Mangin |
geographic_facet |
Antarctic The Antarctic Austral Amundsen Sea Recta Mangin |
genre |
Amundsen Sea Antarc* Antarctic Antarctica E. Antarctica |
genre_facet |
Amundsen Sea Antarc* Antarctic Antarctica E. Antarctica |
op_relation |
https://nora.nerc.ac.uk/id/eprint/507948/1/JM%2013-025_NORA.pdf Allen, C. S. orcid:0000-0002-0938-0551 . 2014 Proxy development: a new facet of morphological diversity in the marine diatom Eucampia antarctica (Castracane) Mangin. Journal of Micropalaeontology, 33 (2). 131-142. https://doi.org/10.1144/jmpaleo2013-025 <https://doi.org/10.1144/jmpaleo2013-025> |
op_doi |
https://doi.org/10.1144/jmpaleo2013-025 |
container_title |
Journal of Micropalaeontology |
container_volume |
33 |
container_issue |
2 |
container_start_page |
131 |
op_container_end_page |
142 |
_version_ |
1766377050113835008 |