The relationship between catch and effort and its effect on predicted yields of sardine fisheries in Lake Kariba

Marshall, B.E. (1992) The relationship between catch and effort and its effect on predicted yields of sardine fisheries in Lake Kariba. Naga, the ICLARM Quarterly, 15(4), pp. 36-39.

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Abstract

There is an unusual relationship between catch per unit effort and effort in the Lake Kariba sardine (Limnothrissa miodon) fishery. This is apparently a results of ecological changes in the lake following the decline of the Salvinia mats that existed there until 1973. Predictive models based on the entire data set (1974-89) are of limited value because they are influenced by the rapid decline in catch per unit effort that took place from 1974 to 1978. A model based on the 1980-89 data indicates that the current catch could be increased substantially. Some empirical models and features of the sardine's biology suggest that it is a realistic model.

Item Type: Article
Title: The relationship between catch and effort and its effect on predicted yields of sardine fisheries in Lake Kariba
Personal Creator/Author:
CreatorsEmail
Marshall, B.E.
Journal or Publication Title: Naga, the ICLARM Quarterly
Volume: 15
Number: 4
Page Range: pp. 36-39
Date: 1992
ISSN: 0116-290X
Issuing Agency: WorldFish Center
Uncontrolled Keywords: Yield/recruit; Catch/effort; Yield predictions; Clupeoid fisheries; Africa, Kariba L.
Subjects: Fisheries
Item ID: 9332
Depositing User: Mr William Ko
Date Deposited: 01 Dec 2012 06:49
Last Modified: 01 Dec 2012 06:49
URI: http://aquaticcommons.org/id/eprint/9332

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