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Optimal investment in conservation of species

Mccarthy, M., Thompson, C. and Garnett, Stephen (2008). Optimal investment in conservation of species. Journal of Applied Ecology,45(5):1428-1435.

Document type: Journal Article

IRMA ID 10310xPUB1
Title Optimal investment in conservation of species
Author Mccarthy, M.
Thompson, C.
Garnett, Stephen
Journal Name Journal of Applied Ecology
Publication Date 2008
Volume Number 45
Issue Number 5
ISSN 0021-8901   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-50649105226
Start Page 1428
End Page 1435
Total Pages 8
Place of Publication UK
Publisher Wiley-Blackwell Publishing
Field of Research 0501 - Ecological Applications
0502 - Environmental Science and Management
0602 - Ecology
HERDC Category C1 - Journal Article (DEST)
Abstract 1. Factors that have been considered when deciding how to invest resources in conservation of species include the efficacy and cost of management, the importance of the species, the level of threat, and the timeframe over which results are to be achieved. However, it is unclear how each of these different factors should be weighted and combined when making a decision.

2. We examine how the probabilities of species changing in IUCN Red List categories are influenced by expenditure of resources. We use these relationships to determine optimal investment strategies, using Australian birds as a case study.

3. The optimal level of investment in different species depends critically on whether managers wish to minimize the number of extinct species or a weighted average of all threatened species, and on the available budget. The level of investment should not necessarily reflect the level of threat. In our case study, the timeframe of management had little influence on the investment decision.

4. Our results show that extinctions of Australian birds can be largely avoided over the next 80 years given current expenditure, but greater investment in conservation is required to reduce the number of threatened species.

5. Synthesis and applications. The most efficient allocation of resources to conserve species is difficult to determine intuitively; therefore, this decision demands the use of formal decision theory. The influence of the particular management objective on the optimal decision means that this feature needs careful consideration. Our approach can be used to determine the level of investment that is required to reduce the number of threatened species.
DOI http://dx.doi.org/10.1111/j.1365-2664.2008.01521.x   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
 
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Created: Wed, 06 May 2009, 10:48:58 CST by Sarena Wegener