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Trends in productivity of southern rock lobster Jasus edwardsii, across south-eastern Australia: evidence of a regime shift?

Citation

Linnane, A and Smith, ADM and McGarvey, R and Feenstra, JE and Matthews, JM and Hartmann, K and Gardner, C, Trends in productivity of southern rock lobster Jasus edwardsii, across south-eastern Australia: evidence of a regime shift?, Fisheries Research, 219 Article 105308. ISSN 0165-7836 (2019) [Refereed Article]


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DOI: doi:10.1016/j.fishres.2019.105308

Abstract

In south-eastern Australia, Southern Rock Lobster Jasus edwardsii supports important regional fisheries across the States of South Australia, Victoria and Tasmania. Previous studies across the region have identified considerable synchrony in both larval settlement and recruitment, suggesting that the mechanisms driving these processes occur across broad spatial scales. This study aimed to further examine cross-jurisdictional fishery patterns by analysing long-term trends in Surplus Production (SP) as a measure of annual stock productivity. The results showed evidence of a common trend across south-eastern Australia. Specifically, a substantially rapid decline in SP was observed around the late 1990s and early to mid-2000s period. This decline was particularity evident in both the Northern Zone of South Australia and the Tasmanian fishery. It is suggested that these results may reflect a regime shift in Southern Rock Lobster productivity across south-eastern Australia, which should be considered in terms of future management of the resource.

Item Details

Item Type:Refereed Article
Keywords:quota, sustainability, Jasus edwardsii, climate change, southern rock lobster, productivity, regime shift, surplus production
Research Division:Agricultural and Veterinary Sciences
Research Group:Fisheries Sciences
Research Field:Aquatic Ecosystem Studies and Stock Assessment
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - Wild Caught
Objective Field:Wild Caught Rock Lobster
UTAS Author:Smith, ADM (Dr Tony Smith)
UTAS Author:Hartmann, K (Dr Klaas Hartmann)
UTAS Author:Gardner, C (Professor Caleb Gardner)
ID Code:133778
Year Published:2019
Deposited By:Fisheries and Aquaculture
Deposited On:2019-07-10
Last Modified:2019-07-10
Downloads:0

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