Name: West Coast Hake Biomass Survey on the Africana Voyage 084, July 1990
License: https://creativecommons.org/licenses/by-sa/4.0/

DOI: 10.15493/DEA.MIMS.24072024

Title	West Coast Hake Biomass Survey on the Africana Voyage 084, July 1990
Authors	Johann Augustyn Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE), South Africa Rob Leslie 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 West Coast Hake Biomass Survey was conducted on the Africana Voyage 084 from 12 July - 06 August 1990. The objectives of the cruise were to survey by means of trawling the abundance of adult and recruiting hake in South African waters; to investigate diurnal cycle of hake and other demersal species; to investigate the environmental and ecological interrelationships of hake and other demersal species; to investigate the occurrence, distribution, and abundance of squid; to study the biology of chondrichthyan species; to investigate zooplankton scattering layers and their influence on the feeding and distribution of small hake; to investigate the feasibility of using carbon and nitrogen isotopes for tracing hake diet; to obtain extensive coverage of chlorophyll-fluorescence distribution at the sea surface as part of an ongoing monitoring program; to collect live chaetognaths and medusae for gut evacuation and feeding experiments, and for gut content analysis; and lastly to train oceanographic research assistants.
Data	Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) Cite 10.15493/DEA.MIMS.24072024 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	12 Jul 1990 – 06 Aug 1990
Geographic extent	North: -28.5 South: -36.0 West: 14.6 East: 20.0
Keywords	Africana, Africana 084, cruise report, sailing orders
Related resources	Digital objects included in this collection: Processed CTD continuous observations from the West Coast Hake Biomass Survey on the Africana Voyage 084, July 1990 (10.15493/DEA.MIMS.25072024) Processed CTD discrete observations from the West Coast Hake Biomass Survey on the Africana Voyage 084, July 1990 (10.15493/DEA.MIMS.26072024)

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