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Issue:ISSN 1000-7083
          CN 51-1193/Q
Director:Sichuan Association for Science and Technology
Sponsored by:Sichuan Society of Zoologists; Chengdu Giant Panda Breeding Research Foundation; Sichuan Association of Wildlife Conservation; Sichuan University
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Your Position :Home->Past Journals Catalog->2020 Vol.39 No.4

Utilization Characteristics of Resources and Niche Differentiation of Grus leucogeranus and Anser fabalis During Migration Period in the Momoge National Nature Reserve, Jilin
Author of the article:LI Luanxin, PAN Hongru, TIAN Ye, LEI Zefeng, ZOU Hongfei*
Author's Workplace:College of Wildlife Resources and Protected Area, Northeast Forest University, Harbin 150040, China
Key Words:Momoge National Nature Reserve; Grus leucogeranus; Anser fabalis; resource utilization; niche
Abstract:In order to understand the resource utilization characteristics and niche differentiation of Siberian crane (Grus leucogeranus) population and bean goose (Anser fabalis) population, G. leucogeranus and A. fabalis were studied during their migration periods in the Momoge National Nature Reserve (Jilin Province) in autumn (2018) and spring (2019). The habitat utilizations of G. leucogeranus and A. fabalis in the reserve were investigated by using the method of fixed route survey and fixed point observation. The resource utilization and niche differentiation were studied by calculating the habitat utilization rate, niche width, and niche overlap. The results showed that the main habitat used by G. leucogeranus during migration period was reed marsh, while those used by A. fabalis were reed marsh and sedge marsh. In term of the habitat environment, the utilization rate of sedge marsh and open water environment was relatively higher in A. fabalis population, while G. leucogeranus preferred meadow, reed marsh and farmland; the niche overlap value peaked in the autumn migration period, reaching 0.654. In term of the offshore distance, G. leucogeranus mainly chose the environments of 0-50 m and 50-100 m offshore, while A. fabalis chose the environments of 150-200 m offshore or larger than 200 m; the niche overlap value peaked in the autumn migration period, reaching 0.612. In term of the foraging space, G. leucogeranus preferred reed bank, farmland and mud land, while A. fabalis preferred sedge bank; the niche overlap value peaked in the spring migration period, reaching 0.595. In conclusion, the utilization characteristics of resources and dynamic change of the niche of G. leucogeranus and A. fabalis obviously reflected the response of birds to habitat change during migration period. The two waterfowl can coexist by selecting different environments to adjust the niche width, reduce the niche overlap and alleviate the resource allocation.
2020,39(4): 417-423 收稿日期:2019-12-02
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