Equivalence in Yield from Marine Reserves and Traditional Fisheries Management

Hastings, Alan; Botsford, Louis W.

doi:10.1126/science.284.5419.1537

Cited by 274 publications

(293 citation statements)

References 14 publications

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“…In contrast, it is argued that traditional fisheries management, such as catch and size regulations, are more effective mechanisms to maintain healthy fish stocks and productive fisheries (Hilborn et al 2004). In this context, quantitative investigations about sparing vs sharing in the sea traditionally argue whether or not marine reserves will provide greater fish biomass and environmental benefits than fishery regulations (Hastings and Botsford 1999;Hilborn et al 2006;White and Kendall 2007)-a typically either/or argument. These studies identify whether a fraction of the system in marine reserves-sparing-or regulation across the entire area-sharing-maximizes fishery yields or profits (Sanchirico and Wilen 2001;Gerber et al 2003;Hastings and Botsford 2003;Sanchirico et al 2006;White et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Ocean zoning within a sparing versus sharing framework

et al. 2018

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The land-sparing versus land-sharing debate centers around how different intensities of habitat use can be coordinated to satisfy competing demands for biodiversity persistence and food production in agricultural landscapes. We apply the broad concepts from this debate to the sea and propose it as a framework to inform marine zoning based on three possible management strategies, establishing: no-take marine reserves, regulated fishing zones, and unregulated open-access areas. We develop a general model that maximizes standing fish biomass, given a fixed management budget while maintaining a minimum harvest level. We find that when management budgets are small, sea-sparing is the optimal management strategy because for all parameters tested, reserves are more cost-effective at increasing standing biomass than traditional fisheries management. For larger budgets, the optimal strategy switches to sea-sharing because, at a certain point, further investing to grow the no-take marine reserves reduces catch below the minimum harvest constraint. Our intention is to illustrate how general rules of thumb derived from plausible, single-purpose models can help guide marine protected area policy under our novel sparing and sharing framework. This work is the beginning of a basic theory for optimal zoning allocations and should be considered complementary to the more specific spatial planning literature for marine reserve as nations expand their marine protected area estates.

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Section: Introductionmentioning

confidence: 99%

Ocean zoning within a sparing versus sharing framework

et al. 2018

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“…The starting point of this analysis are the results indicating the dual nature of conventional fisheries management and management by marine reserves (Hastings and Botsford 1999). That study and studies by others shows that the effect on yield of implementing a marine reserve is roughly the same as reducing fishing effort.…”

Section: B Conceptual Models Of Reservesmentioning

confidence: 99%

Spatial Management of Fisheries

Wilen¹

2004

Marine Resource Economics

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“…Indeed, without reserves, fishing effort would need to be reduced by >50% in most cases to make the local fisheries sustainable (Table 1). The degree to which larger networks of no-take reserves could compensate fisheries at the scale of entire stocks remains an open question, although theoretical work suggests such compensation is possible (Hastings & Botsford 1999;Neubert 2003;Kaplan & Botsford 2005).…”

Section: Reservementioning

confidence: 99%

Spillover from marine reserves and the replenishment of fished stocks

2009

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SUMMARYNo-take marine reserves are widely recognized as an effective conservation tool for protecting marine resources. Despite considerable empirical evidence that abundance and biomass of fished species increase within marine reserve boundaries, the potential for reserves to provide fisheries and conservation benefits to adjacent waters remains heavily debated. This paper uses statistical and population models to evaluate published empirical data on adult spillover from marine reserves and shows that spillover is a common phenomenon for species that respond positively to reserve protection, but at relatively small scales, detectable on average up to 800 m from reserve boundaries. At these small scales, local fisheries around reserves were likely unsustainable in 12 of 14 cases without the reserve, and spillover partially or fully offsets losses in catch due to reserve closure in the other two cases. For reserves to play a role in sustaining and replenishing larger-scale fished stocks, networks of reserves may be necessary, but as few exist this is difficult to evaluate. The results suggest reserves can simultaneously meet conservation objectives and benefit local fisheries adjacent to their boundaries.

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Equivalence in Yield from Marine Reserves and Traditional Fisheries Management

Cited by 274 publications

References 14 publications

Ocean zoning within a sparing versus sharing framework

Ocean zoning within a sparing versus sharing framework

Spatial Management of Fisheries

Spillover from marine reserves and the replenishment of fished stocks

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