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Rapid conservation assessment for endangered species using habitat connectivity models

机译：使用栖息地连通性模型对濒危物种进行快速保护评估

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To avoid extinction of rare species in regions of active environmental change, strategic approaches are needed to manage remaining habitat. When observations of dispersal or metapopulation information are not available, habitat connectivity simulations may offer a valuable alternative source of information to assess threats and evaluate conservation options. For the Critically Endangered San Martin titi monkey (Callicebus oenanthe) in north central Peru, an updated distribution model was generated and land cover in the heavily deforested northern range of the species was mapped. The value of remaining forest fragments was characterized and threats from future land use change were assessed using complementary connectivity models. It is estimated that the species range is less than 14000 km~2. Remote sensing analysis reveals that at least 34% of lowland forest in the northern range has been lost, while nearly 95% of remaining habitat fragments are likely too small to support viable populations and less than 8% of this habitat lies within conservation areas. Areas with the highest modelled connectivity comprise only 10% of the remaining forest in the northern range and small patches may contribute disproportionately to movement; these lands represent opportunities for conservation and reforestation to prevent potentially significant impacts from future mining and urban development. This study prioritized remaining suitable habitat patches using modelled connectivity and local knowledge to gain insight into the status of an understudied species. This approach offers a relatively rapid method to identify potential land use conflicts, and to further focus research and locally appropriate conservation.
机译：为了避免在活跃的环境变化区域中稀有物种的灭绝，需要采取战略措施来管理剩余的栖息地。如果无法获得对扩散或种群分布信息的观察，则栖息地连通性模拟可能会提供有价值的替代信息来源，以评估威胁并评估保护方案。对于秘鲁北部中部极度濒危的圣马丁山地猴（Callicebus oenanthe），生成了更新的分布模型，并绘制了北部森林严重毁林的土地覆盖图。表征剩余森林碎片的价值，并使用互补的连通性模型评估未来土地利用变化带来的威胁。估计物种范围小于14000 km〜2。遥感分析显示，北部地区至少有34％的低地森林已经消失，而剩余的近95％的栖息地碎片可能太小而无法支撑可行的种群，而不到8％的栖息地位于保护区内。连通性最高的区域仅占北部山脉剩余森林的10％，小片块可能对运动造成不成比例的影响；这些土地代表了保护和重新造林的机会，以防止未来采矿和城市发展可能产生的重大影响。这项研究使用建模的连通性和本地知识对剩余的合适栖息地斑块进行了优先排序，以深入了解被研究不足的物种的状况。这种方法提供了一种相对快速的方法，可以识别潜在的土地使用冲突，并进一步集中研究和当地适当的保护。

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