Prioritizing global marine mammal habitats using density maps in place of range maps
Prioritizing global marine mammal habitats using density maps in place of range maps
复制标题
使用密度图代替范围图优先考虑全球海洋哺乳动物栖息地
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
K. Kaschner
中科院分区：
文献类型：
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作者：
Rob Williams;J. Grand;S. Hooker;S. T. Buckland;R. Reeves;L. Rojas;D. Sandilands;K. Kaschner
尽管陆地系统提供了经验教训，但海洋系统的养护工作继续侧重于根据范围图推断的高度物种丰富度确定优先保护地点。分布图过分简化了动物分布的空间变异性，假设范围内的分布是均匀的，而事实上对关键生境和边缘生境给予了同等的权重。我们用的是马克思的版本。2.43利用海洋哺乳动物的活动范围和相对丰度信息，比较基于物种丰富度的系统保护区网络解决方案。在全球范围内，储备网络解决方案对模型输入和假设非常敏感。基于不同输入数据的解决方案最多重叠三分之一，在某些情况下一致性低至10%。在区域尺度上，物种丰富度与密度呈负相关，物种丰富度热点排除了所有物种密度最高的区域。基于这些发现，我们警告说，根据分布图得出的物种丰富度估计，并作为保护规划工作的输入，可能会无意中导致对大部分边缘栖息地的保护。
Despite lessons from terrestrial systems, conservation efforts in marine systems continue to focus on identifying priority sites for protection based on high species richness inferred from range maps. Range maps oversimplify spatial variability in animal distributions by assuming uniform distribution within range and de facto giving equal weight to critical and marginal habitats. We used Marxan ver. 2.43 to compare species richness-based systematic reserve network solutions using information about marine mammal range and relative abundance. At a global scale, reserve network solutions were strongly sensitive to model inputs and assumptions. Solutions based on different input data overlapped by a third at most, with agreement as low as 10% in some cases. At a regional scale, species richness was inversely related to density, such that species richness hotspots excluded highest-density areas for all species. Based on these findings, we caution that species-richness estimates derived from range maps and used as input in conservation planning exercises may inadvertently lead to protection of largely marginal habitat.