Investigating trade-offs in alternative catch share systems: an individual-based bio-economic model applied to the Bay of Biscay sole fishery

Bellanger, Manuel; Macher, Claire; Merzéréaud, Mathieu; Guyader, Olivier; Grand, Christelle Le

doi:10.1139/cjfas-2017-0075

Cited by 12 publications

(8 citation statements)

References 66 publications

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“…Besides ensuring a sustainable exploitation of fish stocks, interviews with representatives from POs highlighted that an ageing fishing fleet and the volatility of crews are major concerns in the region. Issues of overcapacity in the region have also been highlighted in the past [34,43,44] and addressed through limited entry and publicly funded decommissioning schemes [45]. Although we estimated that in 2016 all 44 fishing segments in the fishery had overall positive gross profits, only 41 showed positive net profits, which highlights the difficulties in renewing the fishing fleet.…”

Section: The Bay Of Biscay Mixed Demersal Fisherymentioning

confidence: 90%

“…Simulations were run with the bio-economic model IAM referenced in [37] and [46], and already used to assess the impacts of various management scenarios on the Bay of Biscay mixed fishery [43,44,47]. IAM is a multispecies, multi-fleet or multi-vessel, and multi-metier model that can include stochasticity on recruitment and fish prices.…”

Section: Bio-economic Modelmentioning

confidence: 99%

“…This module calculates for each individual harvester i a variety of economic outputs described in [44]. Among them, three indicators are of particular interest:…”

Section: Economic Modulementioning

confidence: 99%

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Providing Integrated Total Catch Advice for the Management of Mixed Fisheries with an Eco-viability Approach

Briton

Macher

Merzéréaud

et al. 2019

Environ Model Assess

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Well-established single-species approaches are not adapted to the management of mixed fisheries where multiple species are simultaneously caught in unselective fishing operations. In particular, ignoring joint production when setting total allowable catches (TACs) for individual species is likely to lead to over-quota discards or, when discards are not allowed, to lost fishing opportunities. Furthermore, economic and social objectives have been poorly addressed in the design of fisheries harvest strategies, despite being an explicit objective of ecosystem-based fisheries management in many jurisdictions worldwide. We introduce the notion of operating space as the ensemble of reachable, single-species fishing mortality targets, given joint production in a mixed fishery. We then use the concept of eco-viability to identify TAC combinations which simultaneously account for multiple objectives. The approach is applied to the joint management of hake and sole fishing in the Bay of Biscay, also accounting for catches of Norway lobster, European seabass and anglerfish. Results show that fishing at the upper end of the MSY range for sole and slightly above Fmsy for hake can generate gains in terms of long-term economic viability of the fleets without impeding the biological viability of the stocks, nor the incentives for crews to remain in the fishery. We also identify reachable fishing mortality targets in the MSY ranges for these two species, given existing technical interactions. Keywords Eco-viability • Mixed fisheries management • Bio-economic modelling • Integrated TAC advice 1 Introduction Ecosystem-based approaches are increasingly being adopted for the management of natural resources, and fisheries make no exception, with the proposal of ecosystem-based fisheries management (EBFM) guidelines in the early 2000s [1, 2], and their subsequent implementation in policy [3, 4]. Among other aspirations, EBFM aims at accounting for the technical interactions among jointly caught species Electronic supplementary material The online version of this article (

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Section: The Bay Of Biscay Mixed Demersal Fisherymentioning

confidence: 90%

Section: Bio-economic Modelmentioning

confidence: 99%

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Providing Integrated Total Catch Advice for the Management of Mixed Fisheries with an Eco-viability Approach

Briton

Macher

Merzéréaud

et al. 2019

Environ Model Assess

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“…However, the overall fishing capacity may increase more dramatically over slightly longer timescales due a preference for maximizing short term economic profits with myopic investment behaviour (Mullon et al 2016). The focus of management efforts should be on the design of institutions that are goal-oriented, to maximize the chance of finding solutions that improve outcomes in all three sustainability dimensions simultaneously (Burgess et al 2018, Bellanger et al 2018. While some evidence focusses on the effect of seasonal environmental variability, it is also on longer time scales that environmental changes will act to affect fish condition, which is important in fisheries production.…”

Section: Discussionmentioning

confidence: 99%

Reverse the declining course: A risk assessment for marine and fisheries policy strategies in Europe from current knowledge synthesis

Bastardie

Brown

2021

Marine Policy

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“…Most bioeconomic mixed fisheries models present in the literature also require data on the cost of fishing at métier level [ 5 ]. Specifically, the variable costs are generally estimated on the basis of effort, assuming a linear or quadratic function [ 11 – 13 ]. The importance of the métier in the bioeconomic models derives from the aggregation level for the biological data related to the demographic structures of the catches routinely used in stock assessment and, in turn, in bioeconomic modeling and MSE.…”

Section: Introductionmentioning

confidence: 99%

Reconciling the economic and biological fishery data gathered through the European Data Collection Framework: A new R-tool

Bitetto¹,

Malvarosa

Berkenhagen

et al. 2022

PLoS ONE

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Fishing fleets and targeted stocks are the basis for the design of multiannual management plans at European or Mediterranean levels. Management Strategy Evaluation and bioeconomic modeling need data at a specific level of resolution in terms of time, area and type of fishing activity for analyzing measures for management procedures using simulations. Within the Data Collection Framework, data are to be aggregated at different levels, e.g.: fleet segment and métier, the former linked to the predominant gear and the size of the vessel and the latter to the activity itself. Fishing costs are collected by fleet segment, effort and landings by fleet segment and métier. Bioeconomic modeling for management purposes requires data at the same resolution. The aim of this paper is to describe a methodology, implemented in SECFISH R package, to disaggregate variable cost data from the fleet segment to the métier level. The presented tool allows to determine the correlation between the variable costs of a vessel and its activities to estimate costs at the activity level (e.g. métiers). The tool is applied to selected Italian fleet segments characterized by a variety of métiers and high dynamicity.

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Investigating trade-offs in alternative catch share systems: an individual-based bio-economic model applied to the Bay of Biscay sole fishery

Cited by 12 publications

References 66 publications

Providing Integrated Total Catch Advice for the Management of Mixed Fisheries with an Eco-viability Approach

Providing Integrated Total Catch Advice for the Management of Mixed Fisheries with an Eco-viability Approach

Reverse the declining course: A risk assessment for marine and fisheries policy strategies in Europe from current knowledge synthesis

Reconciling the economic and biological fishery data gathered through the European Data Collection Framework: A new R-tool

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