ArticleScientific reports2024
Historical and current distribution ranges of the Asiatic black bear (Ursus thibetanus).
Article in Scientific reports, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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6 authors.
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Abstract
The current distribution of Asiatic black bear (Ursus thibetanus) is available on the IUCN Red List of Threatened species website; however, nothing is known about the historical extent and occurrence of this species. Therefore, we aimed to understand the historical distribution of the Asiatic black bear, and map and estimate its total size, to compare it with that of species current distribution. In addition, we analyzed a network of protected areas in the past and current ranges of the species. We employed geographic information system (GIS) software to reconstruct and measure the historical range of the Asiatic black bear, comparing past and current ranges to analyze its expected range contraction. The main focus of the study was to enhance our understanding of the species' historical distribution, contributing to better conservation strategies for the present and future perspectives. The utilization of GIS tools facilitates a comprehensive exploration of the factors influencing the species' decline, ultimately aiding in more effective management and conservation efforts. We used published records of black bear's occurrence in anywhere in history to reconstruct its historical distribution range. Results revealed that the Asiatic black bear was more widely distributed in historical times and its range spanned across approximately 15.86 million km
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