Diversity in zooplankton and sympagic biota during a period of rapid sea ice change in Terra Nova Bay, Ross Sea, Antarctica
Sea ice is a major driver of biological activity in the Southern Ocean. Its cycle of growth and decay determines life history traits; food web interactions; and populations of many small, ice-associated organisms. The regional ocean modelling system (ROMS) for sea ice in the western Ross Sea has hig...
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ftunivtasecite:oai:ecite.utas.edu.au:150503 2023-05-15T13:42:40+02:00 Diversity in zooplankton and sympagic biota during a period of rapid sea ice change in Terra Nova Bay, Ross Sea, Antarctica Granata, A Weldrick, CK Bergamasco, A Saggiomo, M Grillo, M Swadling, KM Guglielmo, L 2022 application/pdf https://doi.org/10.3390/d14060425 http://ecite.utas.edu.au/150503 en eng MDPIAG http://ecite.utas.edu.au/150503/1/150503 - Diversity in zooplankton and sympagic biota during a period.pdf http://dx.doi.org/10.3390/d14060425 Granata, A and Weldrick, CK and Bergamasco, A and Saggiomo, M and Grillo, M and Bergamasco, A and Swadling, KM and Guglielmo, L, Diversity in zooplankton and sympagic biota during a period of rapid sea ice change in Terra Nova Bay, Ross Sea, Antarctica, Diversity, 14, (6) Article 425. ISSN 1424-2818 (2022) [Refereed Article] http://ecite.utas.edu.au/150503 Biological Sciences Ecology Marine and estuarine ecology (incl. marine ichthyology) Refereed Article PeerReviewed 2022 ftunivtasecite https://doi.org/10.3390/d14060425 2022-11-07T23:17:17Z Sea ice is a major driver of biological activity in the Southern Ocean. Its cycle of growth and decay determines life history traits; food web interactions; and populations of many small, ice-associated organisms. The regional ocean modelling system (ROMS) for sea ice in the western Ross Sea has highlighted two modes of sea ice duration: fast-melting years when water temperature warms quickly in early spring and sea ice melts out in mid-November, and slow-melting years when water temperature remains below 0 C and sea ice persists through most of December. Ice-associated and pelagic biota in Terra Nova Bay, Ross Sea, were studied intensively over a 3-week period in November 1997 as part of the PIPEX (Pack-Ice Plankton Experiment) campaign. The sea ice environment in November 1997 exhibited features of a slow-melting year, and the ice cover measured 0.65 m in late November. Phytoplankton abundance and diversity increased in the second half of November, concomitant with warming air and water temperatures, melting sea ice and progressive deepening of a still weak pycnocline. Water column phytoplankton was dominated by planktonic species, both in abundance and diversity, although there was also some input from benthic species. Pelagic zooplankton were typical of a nearshore Antarctic system, with the cyclopoid copepod Oithona similis representing at least 90% of total abundance. There was an increase in numbers coinciding with the period of ice thinning. Conversely, ice-associated species such as the calanoid copepods Stephos longipes and Paralabidocera antarctica decreased over time and were found in low numbers once the water temperatures increased. Stratified sampling under the sea ice, to 20 m, revealed that P. antarctica was mainly found in close association with the under-ice surface, while S. longipes , O. similis , and the calanoid copepod Metridia gerlachei were dispersed more evenly. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ross Sea Sea ice Southern Ocean Copepods eCite UTAS (University of Tasmania) Antarctic Ross Sea Southern Ocean Terra Nova Bay Diversity 14 6 425 |
institution |
Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Biological Sciences Ecology Marine and estuarine ecology (incl. marine ichthyology) |
spellingShingle |
Biological Sciences Ecology Marine and estuarine ecology (incl. marine ichthyology) Granata, A Weldrick, CK Bergamasco, A Saggiomo, M Grillo, M Swadling, KM Guglielmo, L Diversity in zooplankton and sympagic biota during a period of rapid sea ice change in Terra Nova Bay, Ross Sea, Antarctica |
topic_facet |
Biological Sciences Ecology Marine and estuarine ecology (incl. marine ichthyology) |
description |
Sea ice is a major driver of biological activity in the Southern Ocean. Its cycle of growth and decay determines life history traits; food web interactions; and populations of many small, ice-associated organisms. The regional ocean modelling system (ROMS) for sea ice in the western Ross Sea has highlighted two modes of sea ice duration: fast-melting years when water temperature warms quickly in early spring and sea ice melts out in mid-November, and slow-melting years when water temperature remains below 0 C and sea ice persists through most of December. Ice-associated and pelagic biota in Terra Nova Bay, Ross Sea, were studied intensively over a 3-week period in November 1997 as part of the PIPEX (Pack-Ice Plankton Experiment) campaign. The sea ice environment in November 1997 exhibited features of a slow-melting year, and the ice cover measured 0.65 m in late November. Phytoplankton abundance and diversity increased in the second half of November, concomitant with warming air and water temperatures, melting sea ice and progressive deepening of a still weak pycnocline. Water column phytoplankton was dominated by planktonic species, both in abundance and diversity, although there was also some input from benthic species. Pelagic zooplankton were typical of a nearshore Antarctic system, with the cyclopoid copepod Oithona similis representing at least 90% of total abundance. There was an increase in numbers coinciding with the period of ice thinning. Conversely, ice-associated species such as the calanoid copepods Stephos longipes and Paralabidocera antarctica decreased over time and were found in low numbers once the water temperatures increased. Stratified sampling under the sea ice, to 20 m, revealed that P. antarctica was mainly found in close association with the under-ice surface, while S. longipes , O. similis , and the calanoid copepod Metridia gerlachei were dispersed more evenly. |
format |
Article in Journal/Newspaper |
author |
Granata, A Weldrick, CK Bergamasco, A Saggiomo, M Grillo, M Swadling, KM Guglielmo, L |
author_facet |
Granata, A Weldrick, CK Bergamasco, A Saggiomo, M Grillo, M Swadling, KM Guglielmo, L |
author_sort |
Granata, A |
title |
Diversity in zooplankton and sympagic biota during a period of rapid sea ice change in Terra Nova Bay, Ross Sea, Antarctica |
title_short |
Diversity in zooplankton and sympagic biota during a period of rapid sea ice change in Terra Nova Bay, Ross Sea, Antarctica |
title_full |
Diversity in zooplankton and sympagic biota during a period of rapid sea ice change in Terra Nova Bay, Ross Sea, Antarctica |
title_fullStr |
Diversity in zooplankton and sympagic biota during a period of rapid sea ice change in Terra Nova Bay, Ross Sea, Antarctica |
title_full_unstemmed |
Diversity in zooplankton and sympagic biota during a period of rapid sea ice change in Terra Nova Bay, Ross Sea, Antarctica |
title_sort |
diversity in zooplankton and sympagic biota during a period of rapid sea ice change in terra nova bay, ross sea, antarctica |
publisher |
MDPIAG |
publishDate |
2022 |
url |
https://doi.org/10.3390/d14060425 http://ecite.utas.edu.au/150503 |
geographic |
Antarctic Ross Sea Southern Ocean Terra Nova Bay |
geographic_facet |
Antarctic Ross Sea Southern Ocean Terra Nova Bay |
genre |
Antarc* Antarctic Antarctica Ross Sea Sea ice Southern Ocean Copepods |
genre_facet |
Antarc* Antarctic Antarctica Ross Sea Sea ice Southern Ocean Copepods |
op_relation |
http://ecite.utas.edu.au/150503/1/150503 - Diversity in zooplankton and sympagic biota during a period.pdf http://dx.doi.org/10.3390/d14060425 Granata, A and Weldrick, CK and Bergamasco, A and Saggiomo, M and Grillo, M and Bergamasco, A and Swadling, KM and Guglielmo, L, Diversity in zooplankton and sympagic biota during a period of rapid sea ice change in Terra Nova Bay, Ross Sea, Antarctica, Diversity, 14, (6) Article 425. ISSN 1424-2818 (2022) [Refereed Article] http://ecite.utas.edu.au/150503 |
op_doi |
https://doi.org/10.3390/d14060425 |
container_title |
Diversity |
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14 |
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6 |
container_start_page |
425 |
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1766171507414794240 |