Winter Zooplankton pilot study - Mawson areaEntry ID: ASAC_1117
Abstract: 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.
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Start Date: 2001-06-12Stop Date: 2001-09-12
Quality See the final report at the URL given below for definitive quality statements.
Access Constraints A copy of the final report from the project is available for download from the URL given below. Data from the project are still being worked up, and are not yet publicly available.
Use Constraints This data set conforms to the PICCCBY Attribution License
Data Set Progress
Distribution Media: HTTP
Distribution Size: 16 kb
Distribution Format: word
Role: TECHNICAL CONTACT
Role: DIF AUTHOR
Phone: +61 3 6232 3324
Fax: +61 3 6232 3351
Email: stephen.nicol at aad.gov.au
203 Channel Highway Australian Antarctic Division
Province or State: Tasmania
Postal Code: 7050
Creation and Review Dates
DIF Creation Date: 2002-10-18
Last DIF Revision Date: 2008-04-10