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Factors affecting post-release survival and dispersal of reintroduced Crested Ibis(Nipponia nippon)in Tongchuan City,China

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Avian Research 2022年第3期13卷 356-361页

作者： Min Li Yilamujiang Tuohetahong Feng Lin Rong Dong Huaqiang Wang Xiaoman Wu Xinping Ye Xiaoping Yu College of Life Sciences Shaanxi Normal UniversityXi’an710119China Shaanxi Giant Panda Research Center Xi’an710082China Yaozhou District Wildlife Protection and Management Station Tongchuan City727100China Research Center for UAV Remote Sensing Shaanxi Normal UniversityXi’an710119China Changqing Teaching&Research Base of Ecology Shaanxi Normal UniversityXi’an710119China

Reintroduction has become a common conservation management tool to restore endangered species in their historical ***,many attempts have failed to establish self-sustaining populations in the *** success of reintroductions could be improved by varying release ***,it is vital to determine the factors influencing reintroduction *** better understand the post-release settlement and to optimize the release strategy of the Crested Ibis(Nipponia nippon),we quantified the effects of age,sex,acclimation duration,and the timing of release events on post-release survival and dispersal distance for the released Crested Ibis in Tongchuan City,Shaanxi Province,using a generalized linear mixed effect modeling *** results indicate that 40–56.3%of the released individuals survived the first year following *** was attributable to flight collisions,starvation,disease,and unknown *** post-release survival probability of ibises showed a negative association with age(estimate=-0.186;95%CI:-0.350 to-0.022;P=0.026),and post-release dispersal distance was affected by the timing of release event(estimate=0.718;95%CI:0.025 to1.253;P=0.042).However,sex and acclimation period duration did not cause detectable differences in postrelease survival probability and dispersal *** on our results,optimal release strategies for establishing a reintroduced population of the Crested Ibis include:(1)release of sub-adults biased and sex ratio balanced initial groups;(2)release during the non-breeding season;and(3)food supplementation immediately after release.

关键词： Crested Ibis post-release dispersal release strategy Reintroduction Survival probability

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