Title | Pelagic Fish Spawner Biomass Survey on the Africana Voyage 117, November 1993 |
---|---|
Authors |
Boyd, Alan Cochrane, Kevern |
Publisher | Department of Forestry, Fisheries and the Environment (2025) |
Contributors |
Project Leader: Tutt, Gavin Project Leader: Lamont, Tarron |
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 | |
Temporal extent | 09 Nov 1993 – 04 Dec 1993 |
Geographic extent |
200 km Leaflet Tiles © Esri — Source: Esri, DeLorme, NAVTEQ, USGS, Intermap, iPC, NRCAN, Esri Japan, METI, Esri China (Hong Kong), Esri (Thailand), TomTom, 2012
North: -32.5 |
Keywords | Africana, Africana 117, sailing orders |
Related resources |
|