Phytoplankton distribution and abundance as related to a frontal system north of Elephant Island, Antarctica
During January-March, 1991, the distribution and floristic composition of the phytoplankton around Elephant Island, Clarence Island and the northern end of King George Island were determined in relation to physical oceanographic conditions and to proximity of the shelf-break and continental slope. T...
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1993
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Online Access: | http://dx.doi.org/10.1017/s0954102093000057 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102093000057 |
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crcambridgeupr:10.1017/s0954102093000057 2024-03-03T08:37:48+00:00 Phytoplankton distribution and abundance as related to a frontal system north of Elephant Island, Antarctica Helbling, E. Walter Amos, Anthony F. S., Nelson Silva Villafañe, Virginia Holm-Hansen, Osmund 1993 http://dx.doi.org/10.1017/s0954102093000057 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102093000057 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 5, issue 1, page 25-36 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 1993 crcambridgeupr https://doi.org/10.1017/s0954102093000057 2024-02-08T08:30:50Z During January-March, 1991, the distribution and floristic composition of the phytoplankton around Elephant Island, Clarence Island and the northern end of King George Island were determined in relation to physical oceanographic conditions and to proximity of the shelf-break and continental slope. The study area included 180 stations, and c. 5400 km of transects providing continuous measurements of salinity, temperature, beam attenuation, and chlorophyll a (chl a ) concentrations in surface waters. The richest phytoplankton areas (2-4 μg chl a 1 -1 ) were generally found associated with a strong salinity front, extending north of King George Island to north of Elephant and Clarence Islands. Data on the phytoplankton community suggest that shelf waters were charaterized by low biomass and a nanoplankton population, while in and just north of the front the biomass increased and there was a shift to a diatom-dominated microplankton population. This is thought to be related to increased stability of the water column just north of the front. The salinity front ran more or less parallel to the continental shelf-break, but its exact position varied during the period of study. It was generally associated with transition water (Type II) or with Weddell-Scotia Confluence water (Type III). Article in Journal/Newspaper Antarc* Antarctic Science Antarctica Clarence Island Elephant Island King George Island Cambridge University Press King George Island Weddell Elephant Island ENVELOPE(-55.184,-55.184,-61.085,-61.085) Clarence Island ENVELOPE(-54.109,-54.109,-61.225,-61.225) Clarence Islands ENVELOPE(-97.334,-97.334,69.918,69.918) Antarctic Science 5 1 25 36 |
institution |
Open Polar |
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Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Geology Ecology, Evolution, Behavior and Systematics Oceanography Helbling, E. Walter Amos, Anthony F. S., Nelson Silva Villafañe, Virginia Holm-Hansen, Osmund Phytoplankton distribution and abundance as related to a frontal system north of Elephant Island, Antarctica |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
During January-March, 1991, the distribution and floristic composition of the phytoplankton around Elephant Island, Clarence Island and the northern end of King George Island were determined in relation to physical oceanographic conditions and to proximity of the shelf-break and continental slope. The study area included 180 stations, and c. 5400 km of transects providing continuous measurements of salinity, temperature, beam attenuation, and chlorophyll a (chl a ) concentrations in surface waters. The richest phytoplankton areas (2-4 μg chl a 1 -1 ) were generally found associated with a strong salinity front, extending north of King George Island to north of Elephant and Clarence Islands. Data on the phytoplankton community suggest that shelf waters were charaterized by low biomass and a nanoplankton population, while in and just north of the front the biomass increased and there was a shift to a diatom-dominated microplankton population. This is thought to be related to increased stability of the water column just north of the front. The salinity front ran more or less parallel to the continental shelf-break, but its exact position varied during the period of study. It was generally associated with transition water (Type II) or with Weddell-Scotia Confluence water (Type III). |
format |
Article in Journal/Newspaper |
author |
Helbling, E. Walter Amos, Anthony F. S., Nelson Silva Villafañe, Virginia Holm-Hansen, Osmund |
author_facet |
Helbling, E. Walter Amos, Anthony F. S., Nelson Silva Villafañe, Virginia Holm-Hansen, Osmund |
author_sort |
Helbling, E. Walter |
title |
Phytoplankton distribution and abundance as related to a frontal system north of Elephant Island, Antarctica |
title_short |
Phytoplankton distribution and abundance as related to a frontal system north of Elephant Island, Antarctica |
title_full |
Phytoplankton distribution and abundance as related to a frontal system north of Elephant Island, Antarctica |
title_fullStr |
Phytoplankton distribution and abundance as related to a frontal system north of Elephant Island, Antarctica |
title_full_unstemmed |
Phytoplankton distribution and abundance as related to a frontal system north of Elephant Island, Antarctica |
title_sort |
phytoplankton distribution and abundance as related to a frontal system north of elephant island, antarctica |
publisher |
Cambridge University Press (CUP) |
publishDate |
1993 |
url |
http://dx.doi.org/10.1017/s0954102093000057 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102093000057 |
long_lat |
ENVELOPE(-55.184,-55.184,-61.085,-61.085) ENVELOPE(-54.109,-54.109,-61.225,-61.225) ENVELOPE(-97.334,-97.334,69.918,69.918) |
geographic |
King George Island Weddell Elephant Island Clarence Island Clarence Islands |
geographic_facet |
King George Island Weddell Elephant Island Clarence Island Clarence Islands |
genre |
Antarc* Antarctic Science Antarctica Clarence Island Elephant Island King George Island |
genre_facet |
Antarc* Antarctic Science Antarctica Clarence Island Elephant Island King George Island |
op_source |
Antarctic Science volume 5, issue 1, page 25-36 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102093000057 |
container_title |
Antarctic Science |
container_volume |
5 |
container_issue |
1 |
container_start_page |
25 |
op_container_end_page |
36 |
_version_ |
1792501759722127360 |