Please note that this is a staging site.
Title Pelagic Fish Spawner Biomass Survey on the Africana Voyage 117, November 1993
Authors

Boyd, Alan
Department of Forestry, Fisheries and the Environment

Cochrane, Kevern
Department of Forestry, Fisheries and the Environment

Publisher Department of Forestry, Fisheries and the Environment (2025)
Contributors

Project Leader: Tutt, Gavin
Department of Forestry, Fisheries and the Environment

Project Leader: Lamont, Tarron
Department of Forestry, Fisheries and the Environment

Abstract The Pelagic Fish Spawner Biomass Survey was conducted on the Africana 117 from 9 November to 4 December 1993. The objectives included an estimation of the biomass and population length structure of anchovy, pilchard, round herring and horse mackerel off South Africa by means of echo-integration and midwater trawling; determining the age-composition of the anchovy population; estimating of anchovy biomass by means of the egg production method and a trial estimation of pilchard biomass by means of the egg production method.
Data
Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
Temporal extent 09 Nov 1993 – 04 Dec 1993
Geographic extent

North: -32.5
South: -36.5
West: 16.5
East: 27.0

Keywords Africana , Africana 117 , sailing orders
Related resources
  • Digital objects included in this collection:
    • Processed CTD continuous observations from the Pelagic Fish Spawner Biomass Survey on the Africana Voyage 117, November 1993 (10.15493/DEA.MIMS.14962023)
    • Processed CTD discrete observations from the Pelagic Fish Spawner Biomass Survey on the Africana Voyage 117, November 1993 (10.15493/DEA.MIMS.14972023)