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Functional-trait ecology of the plateau pika Ochotona curzoniae in the Qinghai-Tibetan Plateau ecosystem

Integrative Zoology 2019年第1期14卷 87-103页

作者： Andrew T.SMITH BADINGQIUYING Maxwell C.WIlSON Brigitte W.HOGAN School of life Sciences Arizona State UniversityTempeArizonaUSA School of Geographical Sciences Qinghai Normal UniversityXiningChina

Understanding a species’functional traits allows for a directed and productive perspective on the role a species plays in nature,and thus its relative importance to conservation *** functionaltrait ecology of the plateau pika Ochotona curzoniae is examined to better understand the resilience and sustainability of the high alpine grasslands of the Qinghai-Tibetan Plateau(QTP).The key functional traits of plateau pikas are their abundance and behavior of digging extensive burrow *** pikas have been poisoned over a significant part of their original geographic distribution across the QTP,allowing comparison of ecological communities with and without *** all mammalian and avian carnivores,most of which are obligate predators on pikas,have been lost in regions where pikas have been *** endemic birds on the QTP nest in pika burrows;when pikas are poisoned,burrows collapse,and these birds are greatly reduced in *** to the biopedturbation resulting from their burrows,regional plant species richness is higher in areas with pikas than *** presence of pika burrows allows higher rates of infiltration during heavy monsoon rains compared to poisoned areas,possibly mitigating runoff and the potential for serious downslope erosion and ***,the functional traits of plateau pikas enhance native biodiversity and other important ecosystem functions;these traits are *** plateau pikas are not natural colonizers,active reintroduction programs are needed to restore pikas to areas from which they have been poisoned to restore the important functional ecological traits of pikas.

关键词： ecosystem engineer functional-trait ecology keystone species Ochotona curzoniae re-introduction

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