f66149d4-2a57-4066-85fd-603403d36455 urn:uuid eng UTF-8 nonGeographicDataset nonGeographicDataset 2025-11-17T15:09:23 creation ISO 19115 2016 Soft sediment assemblages at Casey Station: (core samples: Nov 1998 - Jan 1999) f66149d4-2a57-4066-85fd-603403d36455 A survey of macrobenthic assemblages in soft-sediments was done at Casey Station, East Antarctica. Samples were taken by divers using hand-held corers (core size - 10 cm diameter by 10 cm deep). This was the final component of a large nested sampling survey extending over a three year periods with samples taken in three summers and one winter period. The aims were: 1) To examine spatial variation at several scales in these assemblages; 2) To determine if there were differences between potentially impacted areas and control areas; 3) To determine the level of replication, taxonomic resolution and data transformation that are appropriate to studies of human impacts in Antarctic soft-sediment assemblages. Cores were collected by divers in a hierarchical, spatially nested design incorporating 4 scales: Locations (1000s of metres apart), Sites (100s of metres), Plots (10s of metres) and among replicates within plots (~1 metre). This data set consists of 48 core samples from three locations, O'Brien Bay, Sparkes Bay and Wilkes. Samples are sorted mainly to species. Links to ASAC 1100. The fields in this dataset are: Location Site/Rep Species {"type": "Polygon", "coordinates": [[[110.0, -66.34952], [110.53687, -66.34952], [110.53687, -66.25833], [110.0, -66.25833], [110.0, -66.34952]]]} 110.0 110.53687 -66.34952 -66.25833 AMD AMD/AU ASSEMBLAGE BENTHIC CEOS COMMUNITY CONTINENT > ANTARCTICA > Casey Station CONTINENT > ANTARCTICA > East Antarctica CONTINENT > ANTARCTICA > O'Brien Bay CONTINENT > ANTARCTICA > Sparkes Bay CONTINENT > ANTARCTICA > Wilkes CORE SAMPLES CORING DEVICES EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ARTHROPODS > CRUSTACEANS EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ECHINODERMS EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > MOLLUSKS EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > SEGMENTED WORMS (ANNELIDS) EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > COMMUNITY DYNAMICS > COMMUNITY STRUCTURE EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > COMMUNITY DYNAMICS > SPECIES DOMINANCE INDICES EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > SPECIES/POPULATION INTERACTIONS > POPULATION DYNAM EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > BENTHIC EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > COASTAL EARTH SCIENCE > HUMAN DIMENSIONS > ENVIRONMENTAL IMPACTS > CONTAMINANT LEVELS/SPILLS EARTH SCIENCE > HUMAN DIMENSIONS > ENVIRONMENTAL IMPACTS > HEAVY METALS CONCENTRATION EARTH SCIENCE > HUMAN DIMENSIONS > ENVIRONMENTAL IMPACTS > SEWAGE DISPOSAL EARTH SCIENCE > OCEANS > MARINE ENVIRONMENT MONITORING > MARINE OBSTRUCTIONS FIELD INVESTIGATION FIELD SURVEYS GEOGRAPHIC REGION > POLAR HUMAN IMPACT LOCATION MACROBENTHOS MICROSCOPES OCEAN > SOUTHERN OCEAN POLLUTION SITE/REP SPATIAL VARIATION SPECIES GET DATA documentDigital Download point for the data HTML PROJECT HOME PAGE documentDigital Public information for ASAC project 2201 HTML PROJECT HOME PAGE documentDigital Public information for ASAC project 1100 HTML VIEW RELATED INFORMATION documentDigital Citation reference for this metadata record and dataset HTML Creative Commons by Attribution logo documentDigital PNG