Legacies of past exploitation and climate affect mammalian sexes differently on the roof of the world - the case of wild yaks

Scientific Reports
Joel BergerMark Hebblewhite

Abstract

In polar environments, a lack of empirical knowledge about biodiversity prompts reliance on species distribution models to predict future change, yet these ignore the role of biotic interactions including the role of long past human exploitation. To explore how mammals of extreme elevation respond to glacial recession and past harvest, we combined our fieldwork with remote sensing and used analyses of ~60 expeditions from 1850-1925 to represent baseline conditions for wildlife before heavy exploitation on the Tibetan Plateau. Focusing on endangered wild yaks (Bos mutus), we document female changes in habitat use across time whereupon they increasingly relied on steeper post-glacial terrain, and currently have a 20x greater dependence on winter snow patches than males. Our twin findings—that the sexes of a cold-adapted species respond differently to modern climate forcing and long-past exploitation—indicate that effective conservation planning will require knowledge of the interplay between past and future if we will assure persistence of the region's biodiversity.

References

Jun 17, 1999·Trends in Ecology & Evolution·M S Boyce, L L McDonald
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Jul 25, 2008·Nature·Jane Qiu
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Citations

Jul 16, 2016·Behavioral Ecology : Official Journal of the International Society for Behavioral Ecology·Harry H MarshallMichael A Cant
Aug 4, 2018·Ecological Applications : a Publication of the Ecological Society of America·Peter J MahoneyLaura R Prugh
May 26, 2018·Science·Ming ChenJiachao Zhang

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