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Railway underpass location affects migration distance in Tibetan antelope (<I>Pantholops hodgsonii</I>)

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dc.contributor.author Xu, Wenjing en
dc.contributor.author Huang, Qiongyu en
dc.contributor.author Stabach, Jared en
dc.contributor.author Buho, Hoshino en
dc.contributor.author Leimgruber, Peter en
dc.date.accessioned 2019-02-22T03:02:07Z
dc.date.available 2019-02-22T03:02:07Z
dc.date.issued 2019
dc.identifier.citation Xu, Wenjing, Huang, Qiongyu, Stabach, Jared, Buho, Hoshino, and Leimgruber, Peter. 2019. "<a href="https://repository.si.edu/handle/10088/95621">Railway underpass location affects migration distance in Tibetan antelope (Pantholops hodgsonii)</a>." <em>Plos One</em>. 14 (2):1&ndash;13. <a href="https://doi.org/10.1371/journal.pone.0211798">https://doi.org/10.1371/journal.pone.0211798</a> en
dc.identifier.issn 1932-6203
dc.identifier.uri https://hdl.handle.net/10088/95621
dc.description.abstract Wildlife crossings are designed to mitigate barrier effects of transportation infrastructure on wildlife movement. Most efforts in evaluating crossing efficiency focus on counting animal use. However, crossings placed at suboptimal locations may alter animals&#39; natural movement pattern and decrease population fitness, which cannot be reflected solely by counts of animal use. The long-distance migration of Tibetan antelope (Pantholops hodgsonii) is directly affected by the Qinghai-Tibet Railway (QTR). Using the Wubei wildlife underpass along the QTR, we evaluated how underpass placement affects migration routes and decreases movement efficiency. We calculated the net-squared displacement of each animal to identify migration segments (wintering, calving, and migrating) based on Argos tracking data. We used two corridor modeling methods to identify optimal routes that theoretically require less energy to travel between seasonal habitats. We calculated the distance from actual migration routes recorded by Argos to the modelled optimal routes. We found that antelopes stray farther away from the optimal routes as they approach Wubei, indicating that animals have to deviate from their optimal migration pathway to access the railway underpass. On average, antelopes prolong their migration distance by 86.19 km (SEM = 17.29 km) in order to access the underpass. Our study suggests crossing location can affect animal migrations even if structures facilitate animal crossing. To better conserve long-distance migrations, long-term studies using tracking data which evaluate optimal migration routes are needed. We suggest considering the location and structural characteristics in designing and improving wildlife crossings, which do not only facilitate utilization, but also optimize animal movement processes such as migration. en
dc.relation.ispartof Plos One en
dc.title Railway underpass location affects migration distance in Tibetan antelope (<I>Pantholops hodgsonii</I>) en
dc.type Journal Article en
dc.identifier.srbnumber 150090
dc.identifier.doi 10.1371/journal.pone.0211798
rft.jtitle Plos One
rft.volume 14
rft.issue 2
rft.spage 1
rft.epage 13
dc.description.SIUnit NZP en
dc.description.SIUnit Peer-reviewed en
dc.citation.spage 1
dc.citation.epage 13

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