Population structure of two Antarctic ice-associated copepods, Drescheriella glacialis and Paralabidocera antarctica, in winter sea ice
The spatial distribution and population structure of two dominant ice-associated copepods, Drescheriella glacialis and Paralabidocera antarctica, were studied during winter at nine locations in east Antarctic fast ice. These species accounted for at least 90% of the total metazoan abundance at each...
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Online Access: | https://doi.org/10.1007/s002270100610 http://ecite.utas.edu.au/21990 |
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ftunivtasecite:oai:ecite.utas.edu.au:21990 2023-05-15T13:59:07+02:00 Population structure of two Antarctic ice-associated copepods, Drescheriella glacialis and Paralabidocera antarctica, in winter sea ice Swadling, KM 2001 https://doi.org/10.1007/s002270100610 http://ecite.utas.edu.au/21990 en eng Springer-Verlag http://dx.doi.org/10.1007/s002270100610 Swadling, KM, Population structure of two Antarctic ice-associated copepods, Drescheriella glacialis and Paralabidocera antarctica, in winter sea ice, Marine Biology, 139, (3) pp. 597-603. ISSN 0025-3162 (2001) [Refereed Article] http://ecite.utas.edu.au/21990 Biological Sciences Ecology Population Ecology Refereed Article PeerReviewed 2001 ftunivtasecite https://doi.org/10.1007/s002270100610 2019-12-13T21:04:01Z The spatial distribution and population structure of two dominant ice-associated copepods, Drescheriella glacialis and Paralabidocera antarctica, were studied during winter at nine locations in east Antarctic fast ice. These species accounted for at least 90% of the total metazoan abundance at each location. Abundances were high, reaching 175 individuals 1-1 (190,000 m-2) for D. glacialis and 660 1-1 (901,000 m-2) for P. antarctica. These abundances were probably partly supported by the high biomass of ice-algae (Pearson correlation coefficient, r=0.75), as indicated by chlorophyll- concentrations (1.7-10.1 g 1-1). The population structures of each species suggested very different life-history strategies. All developmental stages of D. glacialis were isolated from the ice cores, including females with egg sacs, supporting the hypothesis that this species reproduces in the sea ice during winter. This strategy might assist D. glacialis in leading a continually colonising existence, whereby it responds opportunistically to the availability of favourable habitat patches. The populations of P. antarctica were composed primarily of nauplii (>99%), consistent with past observations of a synchronised life cycle for this species. The strong coupling of the developmental cycle of P. antarctica to the growth and decay of sea ice suggests that local extinctions might occur in areas where ice break-out is unpredictable. Article in Journal/Newspaper Antarc* Antarctic Antarctica ice algae Sea ice Copepods eCite UTAS (University of Tasmania) Antarctic Marine Biology 139 3 597 603 |
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eCite UTAS (University of Tasmania) |
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ftunivtasecite |
language |
English |
topic |
Biological Sciences Ecology Population Ecology |
spellingShingle |
Biological Sciences Ecology Population Ecology Swadling, KM Population structure of two Antarctic ice-associated copepods, Drescheriella glacialis and Paralabidocera antarctica, in winter sea ice |
topic_facet |
Biological Sciences Ecology Population Ecology |
description |
The spatial distribution and population structure of two dominant ice-associated copepods, Drescheriella glacialis and Paralabidocera antarctica, were studied during winter at nine locations in east Antarctic fast ice. These species accounted for at least 90% of the total metazoan abundance at each location. Abundances were high, reaching 175 individuals 1-1 (190,000 m-2) for D. glacialis and 660 1-1 (901,000 m-2) for P. antarctica. These abundances were probably partly supported by the high biomass of ice-algae (Pearson correlation coefficient, r=0.75), as indicated by chlorophyll- concentrations (1.7-10.1 g 1-1). The population structures of each species suggested very different life-history strategies. All developmental stages of D. glacialis were isolated from the ice cores, including females with egg sacs, supporting the hypothesis that this species reproduces in the sea ice during winter. This strategy might assist D. glacialis in leading a continually colonising existence, whereby it responds opportunistically to the availability of favourable habitat patches. The populations of P. antarctica were composed primarily of nauplii (>99%), consistent with past observations of a synchronised life cycle for this species. The strong coupling of the developmental cycle of P. antarctica to the growth and decay of sea ice suggests that local extinctions might occur in areas where ice break-out is unpredictable. |
format |
Article in Journal/Newspaper |
author |
Swadling, KM |
author_facet |
Swadling, KM |
author_sort |
Swadling, KM |
title |
Population structure of two Antarctic ice-associated copepods, Drescheriella glacialis and Paralabidocera antarctica, in winter sea ice |
title_short |
Population structure of two Antarctic ice-associated copepods, Drescheriella glacialis and Paralabidocera antarctica, in winter sea ice |
title_full |
Population structure of two Antarctic ice-associated copepods, Drescheriella glacialis and Paralabidocera antarctica, in winter sea ice |
title_fullStr |
Population structure of two Antarctic ice-associated copepods, Drescheriella glacialis and Paralabidocera antarctica, in winter sea ice |
title_full_unstemmed |
Population structure of two Antarctic ice-associated copepods, Drescheriella glacialis and Paralabidocera antarctica, in winter sea ice |
title_sort |
population structure of two antarctic ice-associated copepods, drescheriella glacialis and paralabidocera antarctica, in winter sea ice |
publisher |
Springer-Verlag |
publishDate |
2001 |
url |
https://doi.org/10.1007/s002270100610 http://ecite.utas.edu.au/21990 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica ice algae Sea ice Copepods |
genre_facet |
Antarc* Antarctic Antarctica ice algae Sea ice Copepods |
op_relation |
http://dx.doi.org/10.1007/s002270100610 Swadling, KM, Population structure of two Antarctic ice-associated copepods, Drescheriella glacialis and Paralabidocera antarctica, in winter sea ice, Marine Biology, 139, (3) pp. 597-603. ISSN 0025-3162 (2001) [Refereed Article] http://ecite.utas.edu.au/21990 |
op_doi |
https://doi.org/10.1007/s002270100610 |
container_title |
Marine Biology |
container_volume |
139 |
container_issue |
3 |
container_start_page |
597 |
op_container_end_page |
603 |
_version_ |
1766267511539499008 |