文献类型：期刊文献

英文题名：Habitat selection and food choice of White-naped Cranes (Grus vipio) at stopover sites based on satellite tracking and stable isotope analysis

作者：Liu, Yunzhu[1,2] Wu, Lan[1,2] Guo, Jia[1,2] Jiao, Shengwu[3] Ren, Sicheng[1,2] Lu, Cai[1,2] Wang, Yuyu[1,2] Jia, Yifei[1,2] Lei, Guangchun[1,2] Wen, Li[4,5] Su, Liying[6]

第一作者：Liu, Yunzhu

通信作者：Jia, YF[1];Lei, GC[1]

机构：[1]Beijing Forestry Univ, Ctr East Asian Australasian Flyway Studies, Beijing, Peoples R China;[2]Beijing Forestry Univ, Sch Ecol & Nat Conservat, Beijing 100083, Peoples R China;[3]Chinese Acad Forestry, Res Inst Subtrop Forestry, Wetland Ecosyst Res Stn Hangzhou Bay, Hangzhou 311400, Peoples R China;[4]NSW Dept Planning Ind & Environm, Sci Econ & Insights Div, Sydney 2150, Australia;[5]Macquarie Univ, Dept Earth & Environm Sci, Sydney 2109, Australia;[6]Int Crane Fdn, Baraboo, WI 53913 USA

年份：2022

卷号：13

外文期刊名：AVIAN RESEARCH

收录：;Scopus(收录号：2-s2.0-85138539495);WOS:【SCI-EXPANDED(收录号:WOS:000876474000001)】；

基金：We would like to thank the late James Harris and other staff from the International Crane Foundation, Wildlife Science and Conservation Center of Mongolia for the use of the tracking data. This research was funded by National Natural Science Foundation of China (No. 31971400) and the Fundamental Research Funds for the Central Universities (No. BLX202144) . We wish to thank the first class General Financial Grant from the China Postdoctoral Science Foundation (No. 2017M620023) , the Free Flying Wings Program, and the SEE Foundation.

语种：英文

外文关键词：Biased random bridge; Food resource; Stopover; Utilization distribution; White-naped Crane

摘要：By combining satellite tracking, land-cover extracted from Landsite 8 images, and the traditional stable isotope analysis, we studied the habitat selection and food preference of a vulnerable migratory waterbird, the White-naped Crane (Grus vipio), in one of its key stagging sites, the Shandian River Basin in the semi-arid northern China, to provide knowledge that is critical for its conservation in the Anthropocene. Our results showed that the White-naped Cranes used both uplands and natural wetlands in the stopover site. While the cranes used farmland and natural land cover equally as night-time roosting grounds, they spent most daytime foraging at farmlands. Despite the extensive usage of croplands as their foraging ground, the Bayesian mixing models based on stable isotopic analysis revealed that crop residues after harvesting, such as Maize (Zea mays) and Naked Oat (Avena chinensis), were only a small fraction of the White-naped Cranes' diet (similar to 19%), and their diet composited mainly natural plants, such as Allium ledebourianum, Potentilla anserina, and P. tanacetifoli. Moreover, more than 20% of the total wetlands in the region were modelled as home range of the cranes. On contrast, less than 10% of croplands and about 1% of the unused uplands were identified as home range. In addition, the entire core habitats were located in natural wetlands. Our findings demonstrated the importance of natural wetlands for the survival of the threatened crane. However, the satellite-derived land cover data showed that croplands increased rapidly in the last decade in this area, at the expense of natural wetlands. With the sharp decrease of White-naped Crane population in China, the conservation of stopover sites becomes imperative. Based on our analysis, we recommend the following management actions: conserving adequate natural wetland area, regulating anthropogenic pressures such as the use of herbicides, expanding the duration and extent of current conservation regulations, establishing a comprehensive monitoring program, and initiating basin-scale ecological restoration, for effective conservation of this threatened species. These integrated conservation strategies for migratory waterbirds are necessary, considering the rapid land-cover changes and agricultural expansion that have been occurring in East Asian-Australasian Flyway, especially in the semi-arid temperate zone.