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ICES Journal of Marine Science: Journal du Conseil Advance Access originally published online on January 17, 2007
ICES Journal of Marine Science: Journal du Conseil 2007 64(2):256-270; doi:10.1093/icesjms/fsl032
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© 2007 International Council for the Exploration of the Sea. Published by Oxford Journals. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Assessing the relative effects of fishing on the New Zealand marine environment through risk analysis

Marnie L. Campbell and Charmaine Gallagher

Ministry of Fisheries, PO Box 1020, Wellington 6001, New Zealand

Correspondence to M. L. Campbell: National Centre for Marine and Coastal Conservation, Australian Maritime College, Private Mail Bag 10, Rosebud, 3939, Victoria, Australia; tel: +61 3 5950 2063; fax: +61 3 5981 2158; e-mail: m.campbell{at}ncmcc.edu.au

Campbell, M. L. and Gallagher, C. 2007. Assessing the relative effects of fishing on the New Zealand marine environment through risk analysis – ICES Journal of Marine Science, 64: 256–270.

Risk analysis is a tool often used by management to aid decision-making. We present a risk-analysis framework that was developed to facilitate managing New Zealand fisheries. Using catch-effort and observer data, the likelihood that a certain fishery will impact upon five effects of fishing (EoF) issues (non-target species, biodiversity, habitat, trophic interactions, and legislated protected species) is determined. The consequences (impact and/or change) of such events are then determined to determine a relative risk ranking across fisheries. Consequence matrices were developed to assess each of the five EoF categories. To illustrate the model, a 13-y data set of New Zealand fisheries catch-effort and observer data was analysed, using orange roughy (Hoplostethus atlanticus) as an example fishery. The New Zealand fisheries management framework follows a traditional model in which socio-political imperatives are determined (through risk assessment) after ecological impacts are assessed. By maintaining separation between ecological and socio-political imperatives, a transparent and objective framework is established.

Keywords: fisheries management, impact, New Zealand, orange roughy, protected species, relative risk analysis

Received 12 March 2006; accepted 11 November 2006; advance access publication 17 January 2007.


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