Sensitivity of Systematic Reserve Selection to Decisions about Scale, Biological Data, and Targets: Case Study from Southern British Columbia
Sensitivity of Systematic Reserve Selection to Decisions about Scale, Biological Data, and Targets: Case Study from Southern British Columbia
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DOI：
10.1111/j.1523-1739.2004.00538.x
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发表时间：
2004-06
影响因子：
6.3
通讯作者：
Leanna D. Warman;A. Sinclair;G. Scudder;B. Klinkenberg;R. Pressey
中科院分区：
文献类型：
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作者：
Leanna D. Warman;A. Sinclair;G. Scudder;B. Klinkenberg;R. Pressey
摘要：基于系统保护区选择算法的保护区识别需要考虑空间尺度和生态尺度。这些决定可能会影响一个地区内被认为优先保护的地点的分布和数量。我们通过改变三个基本变量的值来探讨系统储备选择的敏感性。利用加拿大不列颠哥伦比亚省奥肯那根地区1:20 000比例尺陆地生态系统图和29种濒危脊椎动物的生境适宜性数据。对于这些数据，我们应用保护区选择算法来选择保护地点，同时改变选择单元的大小和形状、生物多样性特征（即脊椎动物物种）和每个生物多样性特征的区域保护目标。(1)不同选择单元确定的保护类群空间相似性（重叠百分比）≤40%,(2)不同生物多样性特征确定的保护类群空间相似性（重叠百分比）为59%，(3)不同保护目标确定的保护类群空间相似性（重叠百分比）≥94%。由于任何选定的遗址集只是许多可能的遗址集中的一个，我们还比较了该地区所有遗址的保护价值（不可替代性）。不同选择单元的不可替代性相关性较弱（0.23≤r≤0.67），不同生物多样性特征的不可替代性相关性较强（r= 0.84），不同保护目标的不可替代性相关性较弱（r= 0.16; 0.16; 1.00）。由于所选地点的一致性较低，不同选择单位的不可替代性相关性较弱，因此必须谨慎考虑仅在一个空间尺度上应用的研究建议。
Abstract: The identification of conservation areas based on systematic reserve‐selection algorithms requires decisions related to both spatial and ecological scale. These decisions may affect the distribution and number of sites considered priorities for conservation within a region. We explored the sensitivity of systematic reserve selection by altering values of three essential variables. We used a 1:20,000–scale terrestrial ecosystem map and habitat suitability data for 29 threatened vertebrate species in the Okanagan region of British Columbia, Canada. To these data we applied a reserve‐selection algorithm to select conservation sites while altering selection unit size and shape, features of biodiversity (i.e., vertebrate species), and area conservation targets for each biodiversity feature. The spatial similarity, or percentage overlap, of selected sets of conservation sites identified (1) with different selection units was ≤40%, (2) with different biodiversity features was 59%, and (3) with different conservation targets was ≥94%. Because any selected set of sites is only one of many possible sets, we also compared the conservation value (irreplaceability) of all sites in the region for each variation of the data. The correlations of irreplaceability were weak for different selection units (0.23 ≤r≤ 0.67), strong for different biodiversity features (r= 0.84), and mixed for different conservation targets (r= 0.16; 0.16; 1.00). Because of the low congruence of selected sites and weak correlations of irreplaceability for different selection units, recommendations from studies that have been applied at only one spatial scale must be considered cautiously.