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The performance of a management procedure for rock lobsters, Jasus edwardsii off western Victoria, Australia in the face of non-stationary dynamics
Citation
Punt, AE and Trinnie, F and Walker, TI and McGarvey, R and Feenstra, J and Linnane, A and Hartmann, K, The performance of a management procedure for rock lobsters, Jasus edwardsii off western Victoria, Australia in the face of non-stationary dynamics, Fisheries Research: An International Journal on Fishing Technology, Fisheries Science and Fisheries Management, 137, (January) pp. 116-128. ISSN 0165-7836 (2013) [Refereed Article]
Copyright Statement
Crown Copyright 2012
DOI: doi:10.1016/j.fishres.2012.09.017
Abstract
The biomass of rock lobster, Jasus edwardsii, has declined across southern Australia, including western
Victoria. Environmentally driven changes in recruitment and high fishing mortality are likely the major
causes for this decline although trends in natural mortality, catchability and growth cannot be excluded.
Management Strategy Evaluation is used to evaluate a management procedure which has been proposed
for rock lobsters off Victoria. This management procedure aims to recover the resource to a target level
of exploitable biomass and to maintain egg production above a limit reference point. The management
procedure is evaluated in terms of (i) catches, (ii) the risk of not achieving conservation goals, and (iii)
the bias of estimates from the stock assessment given scenarios in which natural mortality, catchability,
growth and recruitment are exhibiting future trends. In general, the exploitable biomass is driven
towards the target level as expected. Changes over time in natural mortality and growth are relatively
inconsequential for the performance of the management procedure, and the impact of changes over
time in growth can be mitigated through ongoing tagging programs. In contrast, trends in catchability
and recruitment will lead to management goals not being satisfied, with trends in catchability the most
problematic because such trends lead to bias in stock assessment outcomes even if data sources which
provide unbiased information on abundance are available for assessment purposes.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | Australia, environment, rock lobster, management strategy evalation, stock assessment |
| Research Division: | Agricultural and Veterinary Sciences |
| Research Group: | Fisheries Sciences |
| Research Field: | Fisheries Management |
| Objective Division: | Animal Production and Animal Primary Products |
| Objective Group: | Fisheries - Wild Caught |
| Objective Field: | Wild Caught Prawns |
| UTAS Author: | Hartmann, K (Dr Klaas Hartmann) |
| ID Code: | 80902 |
| Year Published: | 2013 |
| Web of Science® Times Cited: | 9 |
| Deposited By: | Sustainable Marine Research Collaboration |
| Deposited On: | 2012-11-15 |
| Last Modified: | 2017-11-03 |
| Downloads: | 2 View Download Statistics |
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