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Evaluating trade-offs between target persistence levels and numbers of species conserved
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Di Fonzo, Martina M. I., Possingham, Hugh P., Probert, William J. M., Bennett, Joseph R., Joseph, Liana N., Tulloch, Ayesha I. T., O'Connor, Shaun, Densem, Jodie and Maloney, Richard F. (2016) Evaluating trade-offs between target persistence levels and numbers of species conserved. Conservation Letters, 9 (1). pp. 51-57. doi:10.1111/conl.12179 ISSN 1755-263X.
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Official URL: http://dx.doi.org/10.1111/conl.12179
Abstract
A focus of conservation planning is to maximize the probability of species persistence, but this may reduce the number of species that can be secured with a limited budget. Using a data set of 700 New Zealand species, we examine the trade-off between providing a high level of persistence for some species and a lower level of persistence for more species. We find that the target persistence level that delivers the highest conservation outcome is a function of the annual budget, such that lower budgets have lower optimal targets. However, it is never optimal to manage species below a 75% probability of persistence. We introduce a prioritization approach that maximizes biodiversity gains based on a flexible persistence target, and demonstrate how strategies with fixed high-persistence targets can be inefficient. We also illustrate the risks in spreading conservation resources too thinly by undertaking low levels of management on more species.
Item Type: | Journal Article | ||||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) Faculty of Science, Engineering and Medicine > Science > Mathematics |
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Journal or Publication Title: | Conservation Letters | ||||||||
Publisher: | Wiley-Blackwell Publishing Ltd. | ||||||||
ISSN: | 1755-263X | ||||||||
Official Date: | 23 February 2016 | ||||||||
Dates: |
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Volume: | 9 | ||||||||
Number: | 1 | ||||||||
Page Range: | pp. 51-57 | ||||||||
DOI: | 10.1111/conl.12179 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Open Access (Creative Commons) |
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