Biology Year Report for Davis Station, 1982Entry ID: Davis_biology_report_1982
Abstract: Taken from the biology report for Davis Station, 1982, prepared by Mark Tucker.
A hardcopy of the report and field books are available in the Australian Antarctic Division library, and pdf copies of the report and field books are available for download at the provided URLs.
The year biology programme for the 1982 season was divided amongst three persons into Phytoplankton, ... Chlorophyll, Invertebrates and Fish. As the zoologist, I will therefore concentrate on the animal, aspect.
The aims of this programme as outlined in the ARPAC approved "A survey of the inshore marine area of Davis" are:
1) A systematic investigation to determine the flora and fauna of the marine inshore environment.
2) To explain their distribution and abundance in response to environmental variables.
The first aim can be divided into two categories:
1) Wide range collection of the benthic, planktonic, pelagic and epontic faunas from the inshore waters of the Vestfold Hills.
2) Quantitative examination of the seasonal and distributional changes of the more common species.
Most of the wide range collecting of the benthos and to a certain extent the plankton was carried out over the 81/81 summer. Collections were made from as far north as the Wyatt Earp islands and in the south near the Sorsdal Glacier. As wide a coverage as possible of the Vestfolds was made plus a visit to the Rauer group on one occasion. The planktonic fauna was collected throughout the year on a monthly basis from three sites from January 82 to December 82 while the pelagic and epontic faunas were collected monthly from the same sites after fast ice formation - April to December. Additions were made to the benthic collections throughout the year if any previously uncollected or interesting specimens were observed.
These collections have culminated in over 150 species. I would expect the total number of different species to be around 200 once all are identified. Representatives of all the species collected will be returned to Biology, Kingston, for reference for future workers in the marine invertebrate field.
The second aim, the quantitative examination, was carried out over a 12 month period from January 82 to December 82 at three sites - A, B and C (figure 1). These sites were selected on the criteria of depth, proximity to Davis and most importantly sediment types. Site A is 9m deep with a sandy bottom and a few odd rocks. It has a relatively low (5% or less) macrophytic cover. Site B is 20m deep with a mud bottom and zero macrophytes while site C is 15m deep with a rocky bottom and scattered pockets of sand and shell fragments etc. and 5-10% macrophyte cover. Sites A and B are relatively flat while C is situated on quite a steep slope. Sediment samples have been retained from each site to enable particle size analysis for more accurate descriptions of the sediment types.
Several zooplankton, sediment inhabiting and macroscopic benthic species were monitored on a monthly basis for the year. Fish were sampled at sites A and C while the epontic community was sampled after ice formation at all three sites.
The environmental variables measured were ice and snow thickness, tide, hours of daylight, salinity, nutrients, water temperature plus chlorophyll data and phytoplankton numbers. These variables are to be used in statistical analysis as a means of explaining the abundance and distribution of the species studied.
Start Date: 1981-12-05Stop Date: 1982-12-16
BIOSPHERE > VEGETATION > MACROPHYTES
CRYOSPHERE > SEA ICE > ICE DEPTH/THICKNESS
CRYOSPHERE > SNOW/ICE > ICE DEPTH/THICKNESS
OCEANS > COASTAL PROCESSES > TIDAL HEIGHT
OCEANS > OCEAN CHEMISTRY > NUTRIENTS
OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE
OCEANS > SALINITY/DENSITY > SALINITY
OCEANS > SEA ICE > ICE DEPTH/THICKNESS
BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > FISH
BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES
BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ARTHROPODS > CRUSTACEANS > COPEPODS
BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ARTHROPODS > CRUSTACEANS
BIOSPHERE > AQUATIC ECOSYSTEMS > PLANKTON > ZOOPLANKTON
BIOSPHERE > AQUATIC ECOSYSTEMS > PLANKTON > PHYTOPLANKTON
OCEANS > OCEAN CHEMISTRY > PIGMENTS > CHLOROPHYLL
BIOSPHERE > AQUATIC ECOSYSTEMS > BENTHIC HABITAT
BIOSPHERE > AQUATIC ECOSYSTEMS > COASTAL HABITAT
BIOSPHERE > AQUATIC ECOSYSTEMS > PELAGIC HABITAT
OCEANS > OCEAN CHEMISTRY > CHLOROPHYLL
Quality See the report for further information.
Access Constraints A hardcopy of the report and field books are available in the Australian Antarctic Division library, and pdf copies of the report and field books are available for download at the provided URLs.
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Role: TECHNICAL CONTACT
Phone: +61 2 6274 1675
Fax: +61 2 6274 1790
Email: mark.tucker at environment.gov.au
Department of the Environment Heritage and Arts GPO Box 787
Province or State: ACT
Postal Code: 2601
Role: DIF AUTHOR
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Email: metadata at aad.gov.au
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DIF Creation Date: 2010-03-11
Last DIF Revision Date: 2014-09-11