53014d94-4ed8-48b7-b1d1-763cee57322f urn:uuid eng UTF-8 nonGeographicDataset nonGeographicDataset 2025-11-17T10:23:29 creation ISO 19115 2016 Winter Zooplankton pilot study - Mawson area 53014d94-4ed8-48b7-b1d1-763cee57322f Metadata record for data from ASAC Project 1117 See the link below for public details on this project. ---- Public Summary from Project ---- The aim of this project is to determine how feasible it is to regularly sample the pelagic under-ice community during winter at a coastal site near Mawson. Very few attempts have been made to sample the water column under the ice during the winter months and the processes that occur during this period remain critical gaps in our knowledge of the Antarctic marine ecosystem. The pelagic community under the Mawson sea ice was sampled during the winter of 2001 using 'light trap' sampling devices. The 'light traps' were tested at various depths in a range of configurations to determine whether they were an appropriate instrument to sample the winter pelagic community under the ice. Fourteen successful deployments of the light traps were made on seven separate occasions from 12 June to 12 September 2001. The light traps were deployed at three different depths - the underside of the sea ice, mid water, and just above the sea floor. Two different light sources were used to attract the animals, namely fluorescent tubes and cyalume sticks. Two different configurations of the traps were tested to retain the animals inside the trap - one with plastic flaps to trap the animals, the other with no flaps, allowing the animals to move freely inside the trap. The light traps were deployed and retrieved during darkness to avoid any influence of ambient light. The objectives of the project were met and it is assessed that the pelagic community in winter can be effectively sampled using this methodology. A result of particular interest is the success of the traps in capturing Pleuragramma antarctica, a species which has proven difficult to capture using traditional sampling methods such as nets. {"type": "Polygon", "coordinates": [[[62.0, -68.0], [63.0, -68.0], [63.0, -67.0], [62.0, -67.0], [62.0, -68.0]]]} 62.0 63.0 -68.0 -67.0 AMD AMD/AU CEOS CONTINENT > ANTARCTICA > Mawson EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES EARTH SCIENCE > CRYOSPHERE > SEA ICE > PACK ICE EARTH SCIENCE > OCEANS > SEA ICE > PACK ICE GEOGRAPHIC REGION > POLAR JIFFY DRILL KRILL OCEAN > SOUTHERN OCEAN SEA ICE SOUTHERN OCEAN PROJECT HOME PAGE documentDigital Public information for ASAC project 1117 HTML VIEW RELATED INFORMATION > GENERAL DOCUMENTATION documentDigital Download point for the data - report HTML VIEW RELATED INFORMATION documentDigital Citation reference for this metadata record and dataset HTML Creative Commons by Attribution logo documentDigital PNG