Managing risk and uncertainty in systematic conservation planning with insufficient information
Managing risk and uncertainty in systematic conservation planning with insufficient information
复制标题
在信息不足的情况下管理系统保护规划中的风险和不确定性
DOI:
10.1111/2041-210x.13725
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发表时间:
2021
影响因子:
6.6
通讯作者:
Jonathan Rhodes
中科院分区:
文献类型:
--
作者:
Valentin Popov;Payal Shah;Rebecca Runting;Jonathan Rhodes
Recent advances in systematic conservation planning make use of modern portfolio theory (MPT)—a framework to construct and select optimal allocation of assets—to address the challenges posed by climate change uncertainty. However, these methods are difficult to implement for fine‐scale conservation planning when the information on future climate scenarios is insufficient. Insufficient information makes the estimators of the key inputs in the optimisation procedure unreliable leading to technical problems for the construction of optimal asset allocation.We identify three statistical methods—constant correlation model, the Ledoit–Wolf approach and the weighted non‐negative least‐squares approach—that can overcome the lack of sufficient information and enable the use of MPT for fine‐scale conservation planning.We illustrate the use of the three methods for identifying efficient portfolio allocation strategies, that is, strategies that give minimum amount of risk for a chosen level of return or maximum return for a chosen level of risk, using case studies of wetland conservation planning in North America and coastal conservation planning in Australia. We compare conservation planning strategies with complete information using standard portfolio theory and with insufficient information using the three methods to highlight their advantages and disadvantages. We find the Ledoit–Wolf and weighted non‐negative least‐squares approaches perform well and can identify risk‐return outcomes that are close to those identified with complete information.The methods presented in this study broaden the range of cases where the application of MPT is possible in conservation planning to enhance its uptake and lead to more efficient allocation of conservation resources.
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影响因子:
6.3
作者:
P. Visconti;L. Joppa
通讯作者:
L. Joppa
DOI:
10.1111/2041-210x.13725/v1/review2
发表时间:
2021
期刊:
影响因子:
--
作者:
A. Iiyoshi;S. Imagawa
通讯作者:
S. Imagawa
影响因子:
11.6
作者:
Rebecca K. Runting;K. Wilson;J. Rhodes
通讯作者:
J. Rhodes
影响因子:
6.3
作者:
D. Sánchez‐Fernández;P. Abellán;P. Aragón;Sara Varela;M. Cabeza
通讯作者:
M. Cabeza
影响因子:
5.2
作者:
M. Tingley;E. Darling;D. Wilcove
通讯作者:
D. Wilcove