Multiple management objectives within a mixed prawn fishery : which win-win-win situations?

Type Proceedings paper
Date 2015-09
Language English
Author(s) Gourguet SophieORCID1, Thebaud OlivierORCID1, 2, Jennings Sarah3, Little Rich4, Dichmont Cathy5, Pascoe Sean5, Doyen Luc6
Affiliation(s) 1 : IFREMER,UMR M101, AMURE, Unité d’Economie Maritime, BP 70, 29280 Plouzané, France
2 : School of Economics and Finance, Queensland University of Technology, Australia
3 : Tasmanian School of Business and Economics, University of Tasmania, Hobart, TAS 7001, Australia
4 : CSIRO Oceans and Atmosphere Flagship, PO Box 1538, Hobart, TAS 7001, Australia
5 : CSIRO Marine and Atmospheric Research, 41 Boggo Road, Dutton Park, QLD 4102, Australia
6 : CNRS, GREThA, University of Bordeaux, avenue Léon Duguit, 33608 Pessac cedex, France
Meeting ICES Annual Science Conference, Copenhagen, Denmark, 21-25 September 2015
Source Actes de colloque ICES ASC 2015. ICES 2015/ M:08
Abstract Fisheries management must address multiple, often conflicting objectives in a highly uncertain context. While the bio-economic performance of trawl fisheries faces high levels of biological and economic uncertainty, the impact of trawling on broader biodiversity is also a major concern for their management. The purpose of this study is to propose a model-based framework to formally assess the trade-offs associated with balancing biological, economic and non-target species conservation objectives in a mixed fishery. This framework is applied to the Australian Northern Prawn Fishery (NPF). We apply a stochastic co-viability framework of analysis to a multi-species bio-economic model of the NPF considering multiple management objectives. In particular, we consider the implications of including a formal non-target species conservation constraint. Results show that, due to the variability in the interactions between the fishery and the ecosystem, current management strategies present biological and economic risks. The trade-offs associated with respecting at each point in time biological, economic and non-target species conservation constraints with high probability and maximizing the net present value of the fishery are quantified.
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Gourguet Sophie, Thebaud Olivier, Jennings Sarah, Little Rich, Dichmont Cathy, Pascoe Sean, Doyen Luc (2015). Multiple management objectives within a mixed prawn fishery : which win-win-win situations? Actes de colloque ICES ASC 2015. ICES 2015/ M:08. https://archimer.ifremer.fr/doc/00299/41070/