Marine benthic populations in Antarctica: patterns and processes
Sampling difficulties have meant that there have been more studies of population patterns than of proc-esses in Antarctic benthos, but a number of generalizations can be made. Benthic marine invenebrates in Antarctica have species/abundance relationships similar to those found in temperate or tropic...
Main Author: | |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Published: |
1996
|
Subjects: | |
Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.472.7264 http://pal.lternet.edu/docs/bibliography/Public/346lterc.pdf |
id |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.472.7264 |
---|---|
record_format |
openpolar |
spelling |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.472.7264 2023-05-15T13:53:22+02:00 Marine benthic populations in Antarctica: patterns and processes Andrew Clarke The Pennsylvania State University CiteSeerX Archives 1996 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.472.7264 http://pal.lternet.edu/docs/bibliography/Public/346lterc.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.472.7264 http://pal.lternet.edu/docs/bibliography/Public/346lterc.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://pal.lternet.edu/docs/bibliography/Public/346lterc.pdf text 1996 ftciteseerx 2016-01-08T07:23:32Z Sampling difficulties have meant that there have been more studies of population patterns than of proc-esses in Antarctic benthos, but a number of generalizations can be made. Benthic marine invenebrates in Antarctica have species/abundance relationships similar to those found in temperate or tropical regions but, several striking examples of gigantism notwithstanding. most species are small. Diversity is generally high, particularly in comparison with the Arctic, although some taxa (for example molluscs) are low in diversity when compared with temperate or tropicaJ faunas. Most species produce larger eggs than related non-polar species, and embryonic development is typically slow. Although the Southern Ocean contains fewer taxa reproducing by feeding pelagic larvae than elsewhere, such larvae are by no means absent. Somewhat paradoxically, these larvae are often released in winter. Post-juvenile growth rates are typically slow, and recruitment rates are slow and episodic. The low temperature slows many biological processes, but other fac-tors are also involved. Ice is an irnponant factor in many biological processes, and the recently described sub-decadal variability in the e"tent of winter sea-ice is likely to e"ert a profound influence on benthic ceo-10gica1 processes in Antarctica. It has long been traditional in ecology to draw a distinc- Text Antarc* Antarctic Antarctica Arctic Sea ice Southern Ocean Unknown Antarctic Arctic Southern Ocean |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
description |
Sampling difficulties have meant that there have been more studies of population patterns than of proc-esses in Antarctic benthos, but a number of generalizations can be made. Benthic marine invenebrates in Antarctica have species/abundance relationships similar to those found in temperate or tropical regions but, several striking examples of gigantism notwithstanding. most species are small. Diversity is generally high, particularly in comparison with the Arctic, although some taxa (for example molluscs) are low in diversity when compared with temperate or tropicaJ faunas. Most species produce larger eggs than related non-polar species, and embryonic development is typically slow. Although the Southern Ocean contains fewer taxa reproducing by feeding pelagic larvae than elsewhere, such larvae are by no means absent. Somewhat paradoxically, these larvae are often released in winter. Post-juvenile growth rates are typically slow, and recruitment rates are slow and episodic. The low temperature slows many biological processes, but other fac-tors are also involved. Ice is an irnponant factor in many biological processes, and the recently described sub-decadal variability in the e"tent of winter sea-ice is likely to e"ert a profound influence on benthic ceo-10gica1 processes in Antarctica. It has long been traditional in ecology to draw a distinc- |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Andrew Clarke |
spellingShingle |
Andrew Clarke Marine benthic populations in Antarctica: patterns and processes |
author_facet |
Andrew Clarke |
author_sort |
Andrew Clarke |
title |
Marine benthic populations in Antarctica: patterns and processes |
title_short |
Marine benthic populations in Antarctica: patterns and processes |
title_full |
Marine benthic populations in Antarctica: patterns and processes |
title_fullStr |
Marine benthic populations in Antarctica: patterns and processes |
title_full_unstemmed |
Marine benthic populations in Antarctica: patterns and processes |
title_sort |
marine benthic populations in antarctica: patterns and processes |
publishDate |
1996 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.472.7264 http://pal.lternet.edu/docs/bibliography/Public/346lterc.pdf |
geographic |
Antarctic Arctic Southern Ocean |
geographic_facet |
Antarctic Arctic Southern Ocean |
genre |
Antarc* Antarctic Antarctica Arctic Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Arctic Sea ice Southern Ocean |
op_source |
http://pal.lternet.edu/docs/bibliography/Public/346lterc.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.472.7264 http://pal.lternet.edu/docs/bibliography/Public/346lterc.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766258417504092160 |