Title Pelagic Pre-Recruit Mesopelagic Biomass Survey on the Africana Voyage 101, March 1992
Authors

J. Hewitson
Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE), South Africa

Publisher Department of Forestry, Fisheries and the Environment (2024)
Contributors

Project Leader: Gavin Tutt
Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE), email: gtsglider@gmail.com

Project Leader: Tarron Lamont
Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE), email: tarron.lamont@gmail.com

Abstract The Pelagic Pre-Recruit Mesopelagic Biomass Survey was conducted on the Africana Voyage 101 from 11-23 March 1992. The objectives of the cruise were to get an estimation of the biomass and population structure of pelagic pre-recruit fish off the West Coast by means of echo-integration and midwater trawling; to get an estimation of a pelagic pre-recruit biomass index using quantitative Methot trawls; to get an an estimation of the biomass and population structure of mesopelagic fish using echo-integration and midwater trawling; to investigate the behaviour of pelagic pre-recruit fish in relation to oceanographic variables; to collect biological material for age, oil content, diet and condition studies on pelagic pre-recruits; to profile currents by means of the acoustic doppler current profiler; and to test the feasibility of using a towed transducer for the acoustic assessment of pelagic pre-recruits.
Data
Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
Temporal extent 11 Mar 1992 – 23 Mar 1992
Geographic extent

North: -29.0
South: -33.0
West: 15.5
East: 18.5

Keywords Africana, Africana 101, cruise report, sailing orders
Related resources
  • Digital objects included in this collection:
    • Processed CTD continuous observations from the Pelagic Pre-Recruit Mesopelagic Biomass Survey on the Africana Voyage 101, March 1992 (10.15493/DEA.MIMS.55072024)
    • Processed CTD discrete observations from the Pelagic Pre-Recruit Mesopelagic Biomass Survey on the Africana Voyage 101, March 1992 (10.15493/DEA.MIMS.56072024)