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Implications of environmental change and mortality estimates for sustaining fish populations in south coast estuaries
Citation
Chuwen, BM and Hoeksema, SD and Hall, NG and Potter, IC, Implications of environmental change and mortality estimates for sustaining fish populations in south coast estuaries, Fisheries Research and Development Corporation/Western Australian Fishing Industry Council, 2006/044 (2010) [Contract Report]
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Abstract
Managers, scientists and fishers now have an understanding of the implications of the
age and size compositions, growth and total mortality of Black Bream and Estuary Cobbler
and the current status of the stocks of those species in south coast estuaries. In particular,
our fisheries-independent data has shown that the abundance of Estuary Cobbler in Wilson
Inlet, which contributes by far the most of any estuary, to the commercial catches of this
species, has declined markedly over the last 20 years. The outcomes of this project will
assist in the development of plans aimed at sustaining the commercial and/or recreational
fisheries for Black Bream and Estuary Cobbler and maintaining the environments of
estuaries on the south coast of Western Australia. Such management plans can now be
based on sound fisheries-independent data on the biology and contemporary status of those
two species and knowledge of their relationships with the environment. Furthermore,
managers can now be confident that the closure of certain areas within estuaries is an
effective tool to protect the stocks of Estuary Cobbler in those estuaries. In addition, the
implications of hypersalinity for the stocks of Black Bream within estuaries are now well
understood by fishery managers and local communities.
A wide understanding by fishers and members of local communities of the significance
and benefits of the study has been created through their strong engagement with the research
team during the course of the study. In addition, through their involvement in the study, two
honours and a PhD student have been trained in contemporary techniques in fisheries
science and population and community ecology.
Item Details
| Item Type: | Contract Report |
|---|---|
| Research Division: | Agricultural and Veterinary Sciences |
| Research Group: | Fisheries Sciences |
| Research Field: | Aquaculture |
| Objective Division: | Animal Production and Animal Primary Products |
| Objective Group: | Fisheries - Wild Caught |
| Objective Field: | Fisheries - Recreational |
| Author: | Chuwen, BM (Dr Ben Chuwen) |
| ID Code: | 71864 |
| Year Published: | 2010 |
| Deposited By: | Sustainable Marine Research Collaboration |
| Deposited On: | 2011-08-11 |
| Last Modified: | 2011-08-11 |
| Downloads: | 0 |
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