A Two Discrete Stock Hypothesis for South African Sardine Resource
Working Paper
2009
Permanent link to this Item
Authors
Journal Title
Link to Journal
Journal ISSN
Volume Title
Publisher
Publisher
University of Cape Town
Faculty
License
Series
Abstract
The two discrete stock hypothesis for South African sardine has been extended. An improved fit to the data has been obtained. These results show that the hypothesis of two discrete stocks of sardine in South African waters can fit the observed data well. The implications of this are that the “western” stock increased from a reduced state earlier than the “eastern” stock, but that the “eastern” stock had previously been more heavily reduced than the “western” stock. The biomass of the both stocks are modelled to have decreased again, the “western” stock falling earlier than the “eastern” one.
Description
Reference:
de Moor, C. L., & Butterworth, D. S. (2009). A two discrete stock hypothesis for South African sardine resource. Unpublished report, MCM/2009/SWG-PEL/47. Cape Town: Marine and Coastal Management, Department of Environmental Affairs and Tourism.