Name: Pelagic Pre-Recruit Mesopelagic Biomass Survey on the Africana Voyage 090, March 1991
License: https://creativecommons.org/licenses/by-sa/4.0/

DOI: 10.15493/DEA.MIMS.36072024

Title	Pelagic Pre-Recruit Mesopelagic Biomass Survey on the Africana Voyage 090, March 1991
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 090 from 05-19 March 1991. The objectives of the cruise were to get an estimation of the biomass and population structure of epi-pelagic pre-recruit fish off the West Coast by means of echo-integration and midwater trawling; get an estimation of an epi-pelagic pre-recruit biomass index using quantitative Methot trawls; get 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; get a collection of biological material for age, oil content, diet and condition studies on pelagic pre-recruits; to determine oxygen concentrations in rock lobster distribution areas; the profiling of currents by means of the acoustic doppler current profiler; and testing the feasibility of the acoustic assessment of juvenile hake.
Data	Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) Cite 10.15493/DEA.MIMS.36072024 Style Terms of use These data are made available with the express understanding that any such use will properly acknowledge the originator(s) and publisher and cite the accession numbers and/or associated Digital Object Identifiers. Anyone wishing to use these data should properly cite and attribute the data providers listed as authors in the metadata provided with each dataset. It is expected that all the conditions of the data license will be strictly honoured. Use of any material herein should be properly cited using the dataset’s persistent identifiers such as accession numbers and DOIs. I agree to the terms of use
Temporal extent	05 Mar 1991 – 19 Mar 1991
Geographic extent	North: -28.5 South: -33.5 West: 15.0 East: 18.5
Keywords	Africana, Africana 090, 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 090, March 1991 (10.15493/DEA.MIMS.37072024) Processed CTD discrete observations from the Pelagic Pre-Recruit Mesopelagic Biomass Survey on the Africana Voyage 090, March 1991 (10.15493/DEA.MIMS.38072024)

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