Disproportionate loss of threatened terrestrial mammals along anthropogenic disturbance gradients

濒危物种 物种丰富度 生物多样性 生态学 栖息地 近危物种 占用率 栖息地破坏 保护依赖物种 消光(光学矿物学) 濒危物种 地理 生物 古生物学
作者
Xueyou Li,Wenqiang Hu,William V. Bleisch,Quan Li,Hongjiao Wang,Bu Ti,Zhong‐yi Qin,Jun Sun,Fuyou Zhang,Xuelong Jiang
出处
期刊:Science of The Total Environment [Elsevier BV]
卷期号:850: 158038-158038 被引量:14
标识
DOI:10.1016/j.scitotenv.2022.158038
摘要

Tens of thousands of species are increasingly confronted with habitat degradation and threatened with local extirpation and global extinction as a result of human activities. Understanding the local processes that shape the regional distribution patterns of at-risk species is useful in safeguarding species against threats. However, there is only limited understanding of the processes that shape the regional distribution patterns of threatened species. We explored the drivers and patterns of species richness of threatened, non-threatened and total terrestrial mammals by employing multi-region multi-species occupancy models based on data from a broad camera trapping survey at 1096 stations stratified across different levels of human activities in 54 mountain forests in southwest China. We compared correlates between total and threatened species richness and examined relationships of human impact variables with the proportion of threatened species and the site's local contribution to β diversity (LCBD). We found that threatened species richness was negatively related to human modification and human presence. However, both non-threatened and total species richness increased as human modification increased. Predicted proportions of threatened species were strongly and positively related to LCBD but negatively related to human modification and human presence. Our results indicate that human impacts can lead to disproportionate loss of threatened terrestrial mammals and highlight the importance of considering threatened species diversity independently from total species richness for directing conservation resources. Our approach represents one of the highest-resolution analyses of different types of human impacts on regional diversity patterns of threatened terrestrial mammals available to inform conservation policy.
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