Regional trade-offs from multi-species maximum sustainable yield (MMSY) management options

Voss, R.; Quaas, Martin F.; Schmidt, Jörn O.; Hoffmann, Júlia

doi:10.3354/meps10639

Cited by 38 publications

(20 citation statements)

References 35 publications

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“…20 BAL. ECON-ECOL Tahvonen, 2009;Voss, et al, 2011;Voss, Quaas, Schmidt, Hoffmann 2014;Voss, Quaas, Schmidt, Tahvonen et al, 2014;Skonhoft et al, 2012;Tahvonen et al, 2013. 21 ELFSIM Little et al, 2007Little, Punt, Mapstone, Begg, Goldman, Ellis 2009;Little, Punt, Mapstone, Begg, Goldman, Williams, 2009;.…”

Section: Stoch Hcr (Itq Wealth)unclassified

Integrated ecological–economic fisheries models—Evaluation, review and challenges for implementation

et al. 2017

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Marine ecosystems evolve under many interconnected and area-specific pressures. To fulfil society's intensifying and diversifying needs while ensuring ecologically sustainable development, more effective marine spatial planning and broader-scope management of marine resources is necessary. Integrated ecological-economic fisheries models (IEEFMs) of marine systems are needed to evaluate impacts and sustainability of potential management actions and understand, and anticipate ecological, economic and social dynamics at a range of scales from local to national and regional. To make these models most effective, it is important to determine how model characteristics and methods of communicating results influence the model implementation, the nature of the advice that can be provided and the impact on decisions taken by managers. This article presents a global review and comparative evaluation of 35 IEEFMs applied to marine fisheries and marine ecosystem resources to identify the characteristics that determine their usefulness, effectiveness and implementation. The focus is on fully integrated models that allow for feedbacks between ecological and human processes although not all the models reviewed achieve that. Modellers must invest more time to make models user friendly and to participate in management fora where models and model results can be explained and discussed. Such involvement is beneficial to all parties, leading to improvement of models and more effective implementation of advice, but demands substantial resources which must be built into the governance process. It takes time to develop effective processes for using IEEFMs requiring a long-term commitment to integrating multidisciplinary modelling advice into management decision-making. K E Y W O R D Sbio-economic models, comparative model evaluation, fisheries management advice, integrated ecological-economic fisheries models, marine spatial planning and cross-sector management, performance criteria and scales and risks, use and acceptance and implementation and communication and flexibility and complexity | INTRODUCTIONThere is a growing need for tools to evaluate policies and assess tradeoffs in management of marine resources and provision of ecosystem services such as fishing, aquaculture, renewable energy, shipping, conservation and recreation (Cormier, Kannen, Elliott, & Hall, 2015;Degnbol & Wilson, 2008;EU 2014;Langlois, Fréon, Steyer, Delgenés, & Hélias, 2014;White et al., 2012). It is necessary to elaborate and apply common principles and broader, interdisciplinary management evaluation in the use of marine space involving several types of activities and sectors Soma et al., 2013;Stelzenmüller et al., 2013;Sundblad et al., 2014). Policymakers need to know the costs and benefits of conserving ecosystem goods and services to manage them sustainably. Moreover, according to an ecosystembased approach to management, specific pressures, associated uncertainties and risks need to be taken into account (Douvere, 2008;Ehler & Douvere, 2009;Gi...

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Section: Stoch Hcr (Itq Wealth)unclassified

Integrated ecological–economic fisheries models—Evaluation, review and challenges for implementation

et al. 2017

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“…Long-term simulations of Eastern Baltic cod development suggest that constant fishing at F MSY probably fulfills at least the ecological objectives (Voss et al, 2014a). However, political decisions on Total Allowable Catches (TACs), which are made on an annual basis, regularly deviated from long-term objectives as specified in MAPs (Carpenter et al, 2016), due to shortterm socio-economic considerations (Voss et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Ecological-Economic Fisheries Management Advice—Quantification of Potential Benefits for the Case of the Eastern Baltic COD Fishery

Voss¹,

Quaas²,

Stoeven³

et al. 2017

Front. Mar. Sci.

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Fishing is a social and economic activity, and consequently socio-economic considerations are important for resource management. While this is acknowledged in the theory of Ecosystem-Based Management (EBM) and its sector-specific development Ecosystem-Based Fisheries Management (EBFM), currently applied fishery management objectives often ignore economic considerations. Year-to-year management, however, implicitly responds to short-term economic interests, and consequently, regularly resorts to tactical short-term rather than strategic long-term decisions. The aim of this article is to introduce a new way of estimating management advice referred to as an "ecologically-constrained Maximum Economic Yield" (eMEY) strategy, which takes into account ecological criteria as well as short-to medium-term economic costs. We further illustrate what net cost reductions per year are possible applying the eMEY strategy compared with the existing way of setting total allowable catches (TACs). The eMEY approach aims at maximizing the economic benefits for the fishery as well as society (consumers), while safeguarding precautionary stock sizes. Using an age-structured optimization model parameterized for the Eastern Baltic cod case study, we find that application of eMEY advice results in more stability in catch advice. Quantification and visualization of the costs of deviating from eMEY advice offers a transparent basis for evaluating decision-making outcomes. The costs of overfishing are mainly borne by the commercial fishery, while fishing less than optimal is particularly costly for the processing industry and consumers. To foster the uptake of our eMEY approach in current advice given by the International Council for the Exploration of the Sea (ICES) and the EU fishery management system, we suggest an easy-to-implement scheme of providing integrated advice, also accounting for economic considerations.

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“…MSY may not be achieved for all stocks simultaneously due to possible interactions between them.'' This need for guidance on how to achieve an acceptable and economically sensible balance between food production and conservation objectives, which takes into account the technical and biological interactions between species, is evident (Gislason 1999, Worm et al 2009, Voss et al 2014 and is the subject of the present work.…”

Section: Introductionmentioning

confidence: 99%

“…For example, the value of a catch depends on the value of the individual species in the catch; a catch composed of forage fish is usually less valuable than the same biomass of fish for human consumption. The maximization of protein yield will therefore not automatically lead to a maximization of the wealth generated (the maximum economic yield [MEY]; Voss et al 2014). Second, how can MSY be reconciled with the need to sustain the composition, structure, and function of the ecosystems concerned?…”

Section: Introductionmentioning

confidence: 99%

Trade‐offs between objectives for ecosystem management of fisheries

Andersen

Brander

Ravn-Jonsen

2015

Ecological Applications

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The strategic objectives for fisheries, which are enshrined in international conventions, are to maintain or restore stocks to produce maximum sustainable yield (MSY) and to implement the ecosystem approach, requiring that interactions between species be taken into account and conservation constraints be respected. While the yield and conservation aims are, to some extent, compatible when a fishery for a single species is considered, species interactions entail that MSY for a species depends on the species with which it interacts, and the yield and conservation objectives therefore conflict when an ecosystem approach to fisheries management is required. We applied a conceptual size- and trait-based model to clarify and resolve these issues by determining the fishing pattern that maximizes the total yield of an entire fish community in terms of catch biomass or economic rent under acceptable conservation constraints. Our results indicate that the eradication of large, predatory fish species results in a potential maximum catch at least twice as high as if conservation constraints are imposed. However, such a large catch could only be achieved at a cost of forgone rent; maximum rent extracts less than half of the potential maximum catch mass. When a conservation constraint is applied, catch can be maximized at negligible cost in forgone rent, compared with maximizing rent. Maximization of rent is the objective that comes closest to respecting conservation concerns.

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Regional trade-offs from multi-species maximum sustainable yield (MMSY) management options

Cited by 38 publications

References 35 publications

Integrated ecological–economic fisheries models—Evaluation, review and challenges for implementation

Integrated ecological–economic fisheries models—Evaluation, review and challenges for implementation

Ecological-Economic Fisheries Management Advice—Quantification of Potential Benefits for the Case of the Eastern Baltic COD Fishery

Trade‐offs between objectives for ecosystem management of fisheries

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