Ocean zoning within a sparing versus sharing framework

McGowan, Jennifer, Bode, Michael, Holden, Matthew H., Davis, Katrina, Krueck, Nils C., Beger, Maria, Yates, Katherine L. and Possingham, Hugh P. (2018) Ocean zoning within a sparing versus sharing framework. Theoretical Ecology, . doi:10.1007/s12080-017-0364-x

Author McGowan, Jennifer
Bode, Michael
Holden, Matthew H.
Davis, Katrina
Krueck, Nils C.
Beger, Maria
Yates, Katherine L.
Possingham, Hugh P.
Title Ocean zoning within a sparing versus sharing framework
Journal name Theoretical Ecology   Check publisher's open access policy
ISSN 1874-1746
Publication date 2018-01-12
Sub-type Article (original research)
DOI 10.1007/s12080-017-0364-x
Open Access Status DOI
Total pages 10
Place of publication Dordrecht, GX Netherlands
Publisher Springer Netherlands
Language eng
Subject 2303 Ecology
2302 Ecological Modelling
Abstract 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.
Keyword Fisheries management
Marine policy
Marine protected areas
Marine zoning
Open-access fisheries
Sparing vs sharing
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
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Created: Fri, 16 Mar 2018, 01:15:56 EST