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Assessing a multilevel tier system: The role and implications of data quality and availability
Citation
Dowling, N and Punt, A and Little, LR and Dichmont, CM and Smith, DC and Haddon, M and Sporcic, M and Fulton, EA and Gorton, RJ, Assessing a multilevel tier system: The role and implications of data quality and availability, Fisheries Research, 183 pp. 588-593. ISSN 0165-7836 (2016) [Refereed Article]
Copyright Statement
Copyright 2016 Crown Copyright
DOI: doi:10.1016/j.fishres.2016.05.001
Abstract
Tier systems for fisheries assessment and management are widely used, but defined differently by jurisdiction. A principal component analysis was applied to the expanded Australian Commonwealth 8-tier system for fishery assessment and management to determine whether it adequately delineates across stocks according to data availability and quality. The original Australian tiers comprised four levels that were defined primarily according to the available stock assessment options, given the data availability and quality. We asked fishery experts to score information quality for each of the main Australian Commonwealth species and/or fisheries. Multivariate analysis indicated that the eight tiers delineated between the extreme tier levels on the first principal component, although there was overlap for intermediate tiers. More generally, it is important that the aim of tier systems and the basis for tier delineations are explicitly defined given the increasing association of tiers with trade-offs between overfishing risk, management cost and catch.
Item Details
Item Type: | Refereed Article |
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Keywords: | fishery assessment, risk-cost-catch, risk equivalency, tier systems |
Research Division: | Agricultural, Veterinary and Food Sciences |
Research Group: | Fisheries sciences |
Research Field: | Fisheries management |
Objective Division: | Expanding Knowledge |
Objective Group: | Expanding knowledge |
Objective Field: | Expanding knowledge in the agricultural, food and veterinary sciences |
UTAS Author: | Little, LR (Dr Richard Little) |
UTAS Author: | Smith, DC (Dr David Smith) |
UTAS Author: | Sporcic, M (Dr Miriana Sporcic) |
UTAS Author: | Fulton, EA (Dr Elizabeth Fulton) |
ID Code: | 118311 |
Year Published: | 2016 |
Web of Science® Times Cited: | 6 |
Deposited By: | Directorate |
Deposited On: | 2017-07-10 |
Last Modified: | 2018-05-10 |
Downloads: | 0 |
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