Response of phytoplankton dynamics to 19-year (1991-2009) climate trends in Potter Cove (Antarctica)
King George Island (KGI, Isla 25 de Mayo) is located within one of the most rapidly warming regions on Earth at the north-western tip of the Antarctic Peninsula. Since 1991 hydrographical characteristics and phytoplankton dynamics were monitored at two stations in Potter Cove, a fjord-like environme...
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ftunivtasecite:oai:ecite.utas.edu.au:109565 2023-05-15T14:03:26+02:00 Response of phytoplankton dynamics to 19-year (1991-2009) climate trends in Potter Cove (Antarctica) Schloss, IR Abele, D Moreau, S Demers, S Bers, AV Gonzalez, O Ferreyra, GA 2012 https://doi.org/10.1016/j.jmarsys.2011.10.006 http://ecite.utas.edu.au/109565 en eng Elsevier Science Bv http://dx.doi.org/10.1016/j.jmarsys.2011.10.006 Schloss, IR and Abele, D and Moreau, S and Demers, S and Bers, AV and Gonzalez, O and Ferreyra, GA, Response of phytoplankton dynamics to 19-year (1991-2009) climate trends in Potter Cove (Antarctica), Journal of Marine Systems, 92, (1) pp. 53-66. ISSN 0924-7963 (2012) [Refereed Article] http://ecite.utas.edu.au/109565 Earth Sciences Oceanography Biological Oceanography Refereed Article PeerReviewed 2012 ftunivtasecite https://doi.org/10.1016/j.jmarsys.2011.10.006 2019-12-13T22:10:13Z King George Island (KGI, Isla 25 de Mayo) is located within one of the most rapidly warming regions on Earth at the north-western tip of the Antarctic Peninsula. Since 1991 hydrographical characteristics and phytoplankton dynamics were monitored at two stations in Potter Cove, a fjord-like environment on the south-eastern KGI coastline. Seawater temperature and salinity, total suspended particulate matter (TSPM) and chlorophyll- a (Chl- a , a proxy for phytoplankton biomass) concentrations were measured in summer and winter over a 19-year period, together with local air temperature. Mean air temperatures rose by 0.39 and 0.48C per decade in summer and winter, respectively. Positive anomalies characterized wind speeds during the decade between the mid '90 and the mid 2000years, whereas negative anomalies were observed from 2004 onwards. Day of sea ice formation and retreat, based on satellite data, did not change, although total sea ice cover diminished during the studied period. Surface water temperature increased during summer (0.36C per decade), whereas no trend was observed in salinity. Summer Chl- a concentrations were around 1mgm −3 Chl- a with no clear trend throughout the study period. TSPM increased in surface waters of the inner cove during the spring-summer months. The Southern Annular Mode (SAM) climate signal was apparent in the fluctuating interannual pattern of the hydrographic variables in the outer Potter Cove and bottom waters whereas surface hydrography was strongly governed by the local forcing of glacier melt. The results show that global trends have significant effects on local hydrographical and biological conditions in the coastal marine environments of Western Antarctica. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Antarctica Journal Isla 25 de Mayo King George Island Sea ice eCite UTAS (University of Tasmania) 25 de Mayo ENVELOPE(-58.000,-58.000,-62.083,-62.083) Antarctic Antarctic Peninsula isla 25 de Mayo ENVELOPE(-58.000,-58.000,-62.083,-62.083) King George Island Potter Cove The Antarctic Journal of Marine Systems 92 1 53 66 |
institution |
Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Earth Sciences Oceanography Biological Oceanography |
spellingShingle |
Earth Sciences Oceanography Biological Oceanography Schloss, IR Abele, D Moreau, S Demers, S Bers, AV Gonzalez, O Ferreyra, GA Response of phytoplankton dynamics to 19-year (1991-2009) climate trends in Potter Cove (Antarctica) |
topic_facet |
Earth Sciences Oceanography Biological Oceanography |
description |
King George Island (KGI, Isla 25 de Mayo) is located within one of the most rapidly warming regions on Earth at the north-western tip of the Antarctic Peninsula. Since 1991 hydrographical characteristics and phytoplankton dynamics were monitored at two stations in Potter Cove, a fjord-like environment on the south-eastern KGI coastline. Seawater temperature and salinity, total suspended particulate matter (TSPM) and chlorophyll- a (Chl- a , a proxy for phytoplankton biomass) concentrations were measured in summer and winter over a 19-year period, together with local air temperature. Mean air temperatures rose by 0.39 and 0.48C per decade in summer and winter, respectively. Positive anomalies characterized wind speeds during the decade between the mid '90 and the mid 2000years, whereas negative anomalies were observed from 2004 onwards. Day of sea ice formation and retreat, based on satellite data, did not change, although total sea ice cover diminished during the studied period. Surface water temperature increased during summer (0.36C per decade), whereas no trend was observed in salinity. Summer Chl- a concentrations were around 1mgm −3 Chl- a with no clear trend throughout the study period. TSPM increased in surface waters of the inner cove during the spring-summer months. The Southern Annular Mode (SAM) climate signal was apparent in the fluctuating interannual pattern of the hydrographic variables in the outer Potter Cove and bottom waters whereas surface hydrography was strongly governed by the local forcing of glacier melt. The results show that global trends have significant effects on local hydrographical and biological conditions in the coastal marine environments of Western Antarctica. |
format |
Article in Journal/Newspaper |
author |
Schloss, IR Abele, D Moreau, S Demers, S Bers, AV Gonzalez, O Ferreyra, GA |
author_facet |
Schloss, IR Abele, D Moreau, S Demers, S Bers, AV Gonzalez, O Ferreyra, GA |
author_sort |
Schloss, IR |
title |
Response of phytoplankton dynamics to 19-year (1991-2009) climate trends in Potter Cove (Antarctica) |
title_short |
Response of phytoplankton dynamics to 19-year (1991-2009) climate trends in Potter Cove (Antarctica) |
title_full |
Response of phytoplankton dynamics to 19-year (1991-2009) climate trends in Potter Cove (Antarctica) |
title_fullStr |
Response of phytoplankton dynamics to 19-year (1991-2009) climate trends in Potter Cove (Antarctica) |
title_full_unstemmed |
Response of phytoplankton dynamics to 19-year (1991-2009) climate trends in Potter Cove (Antarctica) |
title_sort |
response of phytoplankton dynamics to 19-year (1991-2009) climate trends in potter cove (antarctica) |
publisher |
Elsevier Science Bv |
publishDate |
2012 |
url |
https://doi.org/10.1016/j.jmarsys.2011.10.006 http://ecite.utas.edu.au/109565 |
long_lat |
ENVELOPE(-58.000,-58.000,-62.083,-62.083) ENVELOPE(-58.000,-58.000,-62.083,-62.083) |
geographic |
25 de Mayo Antarctic Antarctic Peninsula isla 25 de Mayo King George Island Potter Cove The Antarctic |
geographic_facet |
25 de Mayo Antarctic Antarctic Peninsula isla 25 de Mayo King George Island Potter Cove The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Antarctica Journal Isla 25 de Mayo King George Island Sea ice |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Antarctica Journal Isla 25 de Mayo King George Island Sea ice |
op_relation |
http://dx.doi.org/10.1016/j.jmarsys.2011.10.006 Schloss, IR and Abele, D and Moreau, S and Demers, S and Bers, AV and Gonzalez, O and Ferreyra, GA, Response of phytoplankton dynamics to 19-year (1991-2009) climate trends in Potter Cove (Antarctica), Journal of Marine Systems, 92, (1) pp. 53-66. ISSN 0924-7963 (2012) [Refereed Article] http://ecite.utas.edu.au/109565 |
op_doi |
https://doi.org/10.1016/j.jmarsys.2011.10.006 |
container_title |
Journal of Marine Systems |
container_volume |
92 |
container_issue |
1 |
container_start_page |
53 |
op_container_end_page |
66 |
_version_ |
1766274089399353344 |