The importance of in situ site loss in nature reserve selection: Balancing notions of complementarity and robustness

O'Hanley, Jesse and Church, Richard L. and Gilless, J. Keith (2007) The importance of in situ site loss in nature reserve selection: Balancing notions of complementarity and robustness. Biological Conservation, 135 (2). pp. 170-180. ISSN 0006-3207. (The full text of this publication is not available from this repository)

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Official URL
http://dx.doi.org/10.1016/j.biocon.2006.10.004

Abstract

Because the threat of habitat destruction can never be entirely eliminated, there is a legitimate concern that some reserve networks, especially highly complementary ones with minimal species overlap, may be predisposed to severe losses in species representation if one or more core reserve sites are destroyed. In order to address this problem in a systematic way, we propose the use of two different optimization models for designing complementary reserve networks that are also highly robust to possible site losses. Given limited budgets, the first maximizes expected species representation over all possible site loss patterns while the second maximizes a combination of representation given all sites and remaining representation following the worst-case loss of a restricted subset of reserve sites. By incorporating reserve loss in fundamentally different ways, these two models provide a range of options in terms of information requirements, assumptions about risk aversion, and structural complexity. We compare both of these methods to a more standard approach, which completely ignores the inherent risk posed by reserve site loss. Results confirm that significantly more robust solutions can be obtained for a marginal decrease in initial species representation within the reserve system.

Item Type: Article
Uncontrolled keywords: reserve selection; site loss uncertainty; reserve loss; complementarity; robustness; maximum covering; maximum expected covering; bilevel programming
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Divisions: Faculties > Social Sciences > Kent Business School
Depositing User: Suzanne Duffy
Date Deposited: 14 May 2008 07:06
Last Modified: 02 Jun 2014 15:13
Resource URI: http://kar.kent.ac.uk/id/eprint/3114 (The current URI for this page, for reference purposes)
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