Data

Physiological Tolerances of Some Antarctic Zooplanktons

Australian Antarctic Data Centre
BURTON, HARRY
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=info:doi10.4225/15/57C917914860D&rft.title=Physiological Tolerances of Some Antarctic Zooplanktons&rft.identifier=10.4225/15/57C917914860D&rft.publisher=Australian Antarctic Data Centre&rft.description=Colonisation of Lake Fletcher, a hypersaline, meromictic lake in the Vestfold Hills, Antarctica, by the calanoid copepod Drepanopus bispinosus, the cyclopoid copepod Oncea curvata and an undescribed cydippid ctenophore is discussed. In 1978, salinity direstly under the ice was 66 ppt and repeated net hauls found no zooplankton. In 1983, adults of D. bispinosus were found, and in 1984, a reproductively active population of this species. Surface water salinity in 1984 was 56 ppt. During winter 1986, surface salinity was 54 ppt and three zooplankton species (D. bispinosus, O curvata and an undescribed cydippid ctenophore) had established populations in the lake. In 1986/87, high tides caused nearby Taynaya Bay to flood into the lake, and three further species (the calanoid, Paralabidocera antarctica, and two harpacticoids, Harpacticus furcatus and Idomene sp.) were found in the lake. It appears that periodic flooding after 1978 caused a salinity decrease in the lake from 66 to 54 ppt, and this enabled some invertebrate species to maintain year-round populations, whereas others require marine incursions to re-establish summer only populations. The fields in this dataset are: Date Salinity Record Species&rft.creator=BURTON, HARRY &rft.date=2000&rft.coverage=northlimit=-68.4516; southlimit=-68.4516; westlimit=78.2569; eastLimit=78.2569; projection=WGS84&rft.coverage=northlimit=-68.4516; southlimit=-68.4516; westlimit=78.2569; eastLimit=78.2569; projection=WGS84&rft_rights=This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_308 when using these data.&rft_subject=biota&rft_subject=geoscientificInformation&rft_subject=inlandWaters&rft_subject=oceans&rft_subject=EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER > SURFACE WATER FEATURES > LAKES/RESERVOIRS&rft_subject=SALTWATER INTRUSION&rft_subject=EARTH SCIENCE&rft_subject=OCEANS&rft_subject=COASTAL PROCESSES&rft_subject=ZOOPLANKTON&rft_subject=BIOSPHERE&rft_subject=AQUATIC ECOSYSTEMS&rft_subject=PLANKTON&rft_subject=ANTARCTICA&rft_subject=DATE&rft_subject=HYPERSALINE&rft_subject=LAKE FLETCHER&rft_subject=LAKES&rft_subject=MARINE INCURSIONS&rft_subject=RECORD&rft_subject=SALINITY&rft_subject=SPECIES&rft_subject=VESTFOLD HILLS&rft_subject=FIELD SURVEYS&rft_subject=CONTINENT > ANTARCTICA&rft_subject=GEOGRAPHIC REGION > POLAR&rft_place=Hobart&rft.type=dataset&rft.language=English Access the data
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This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_308 when using these data.

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Brief description

Colonisation of Lake Fletcher, a hypersaline, meromictic lake in the Vestfold Hills, Antarctica, by the calanoid copepod Drepanopus bispinosus, the cyclopoid copepod Oncea curvata and an undescribed cydippid ctenophore is discussed. In 1978, salinity direstly under the ice was 66 ppt and repeated net hauls found no zooplankton. In 1983, adults of D. bispinosus were found, and in 1984, a reproductively active population of this species. Surface water salinity in 1984 was 56 ppt. During winter 1986, surface salinity was 54 ppt and three zooplankton species (D. bispinosus, O curvata and an undescribed cydippid ctenophore) had established populations in the lake. In 1986/87, high tides caused nearby Taynaya Bay to flood into the lake, and three further species (the calanoid, Paralabidocera antarctica, and two harpacticoids, Harpacticus furcatus and Idomene sp.) were found in the lake. It appears that periodic flooding after 1978 caused a salinity decrease in the lake from 66 to 54 ppt, and this enabled some invertebrate species to maintain year-round populations, whereas others require marine incursions to re-establish summer only populations. The fields in this dataset are: Date Salinity Record Species

Issued: 2000-07-26

Data time period: 1978-01-01 to 1987-02-20

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78.2569,-68.4516

78.2569,-68.4516

text: northlimit=-68.4516; southlimit=-68.4516; westlimit=78.2569; eastLimit=78.2569; projection=WGS84

Subjects
ANTARCTICA | AQUATIC ECOSYSTEMS | BIOSPHERE | COASTAL PROCESSES | CONTINENT > ANTARCTICA | DATE | EARTH SCIENCE | EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER > SURFACE WATER FEATURES > LAKES/RESERVOIRS | FIELD SURVEYS | GEOGRAPHIC REGION > POLAR | HYPERSALINE | LAKE FLETCHER | LAKES | MARINE INCURSIONS | OCEANS | PLANKTON | RECORD | SALINITY | SALTWATER INTRUSION | SPECIES | VESTFOLD HILLS | ZOOPLANKTON | biota | geoscientificInformation | inlandWaters | oceans |

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AU-ANL:PEAU : http://nla.gov.au/nla.party-617536

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