Survey of soft sediment assemblages around Casey Station (Winter grab samples), June-Sept 1998Entry ID: ASAC_2201_Casey_benthic_survey3
Abstract: Marine soft-sediment assemblages were sampled from shallow (5 - 35m) nearshore regions around Casey Station, Windmill Islands, East Antarctica in winter 1998, using a van-Veen grab (surface area 20 x 25 cm). Samples were seived through a 1 mm mesh and sorted to species where possible. A hierarchical, spatially nested sampling design was used with locations (km's apart), sites (100s of metres ... apart). Two potentially impacted, polluted locations (Shannon Bay - adjacent to a sewage outfall; and Brown Bay - adjacent to an old garbage tip) were compared with a control location in O'Brien Bay. Data were analysed using both multivariate and univariate statistical methods. Significant differences in assemblages were found between locations and between sites within locations.
Significant differences in the abundances of taxa at several taxonomic levels (species, family, order, phylum) were also found at both spatial scales. Significant differences were also detected between the polluted and control locations.
These samples were collected as part of a larger program examining human impacts in marine benthic assemblages at Casey Station. These samples were used in an analysis of temporal changes in soft-sediment assemblages at Casey. A total of 30 grab samples were collected in this survey.
The fields in this dataset are:
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Start Date: 1998-06-05Stop Date: 1998-09-18
Vertical Resolution: 1 m
HUMAN DIMENSIONS > ENVIRONMENTAL IMPACTS > CONTAMINANT LEVELS/SPILLS
HUMAN DIMENSIONS > ENVIRONMENTAL IMPACTS > HEAVY METALS CONCENTRATION
HUMAN DIMENSIONS > ENVIRONMENTAL IMPACTS > SEWAGE DISPOSAL
OCEANS > MARINE ENVIRONMENT MONITORING > MARINE OBSTRUCTIONS
BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES
BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ARTHROPODS > CRUSTACEANS
BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ECHINODERMS
BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > MOLLUSKS
BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > SEGMENTED WORMS (ANNELIDS)
BIOSPHERE > AQUATIC ECOSYSTEMS > BENTHIC HABITAT
BIOSPHERE > AQUATIC ECOSYSTEMS > COASTAL HABITAT
BIOSPHERE > AQUATIC ECOSYSTEMS > MARINE HABITAT
BIOSPHERE > ECOLOGICAL DYNAMICS > SPECIES/POPULATION INTERACTIONS > POPULATION DYNAMICS
BIOSPHERE > ECOLOGICAL DYNAMICS > COMMUNITY DYNAMICS > SPECIES DOMINANCE INDICES
BIOSPHERE > ECOLOGICAL DYNAMICS > COMMUNITY DYNAMICS > COMMUNITY STRUCTURE
Quality Gammarid, Isopod, gastropod faunas identified at the Australian Museum. Remaining faunas identified by J. Stark.
Access Constraints Please contact investigators before using data.
Use Constraints This data set conforms to the PICCCBY Attribution License
May only be used if principal investigators acknowledged.
Data Set Progress
Distribution Media: HTTP
Distribution Size: 7 kb
Distribution Format: excel
Creation and Review Dates
DIF Creation Date: 2011-07-13
Last DIF Revision Date: 2011-07-13