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Issue:ISSN 1000-7083
          CN 51-1193/Q
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Your Position :Home->Past Journals Catalog->2017 Vol.36 No.4

Foraging Behavior and Food Resources of Wintering Grus monacha in China
Author of the article:JIAO Shengwu1,2, JIANG Keyi1, ZUO Aojie2, WU Ming1, LEI Guangchun2*, ZHOU Yan3
Author's Workplace:1. Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Wetland Ecosystem Research Station of Hangzhou Bay, State Forestry Administration, Hangzhou 311400, China;
2. School of Nature Conservation, Beijing Forestry University, Beijing 100083, China;
3. College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
Key Words:Grus monacha; wintering; foraging behavior; food resource; human disturbance
Abstract:Food resources and human disturbance influence the foraging behavior of the wintering migrants. The foraging behavior and food resources of Grus monacha were investigated at Shengjin Lake, Poyang Lake and Chongming Dongtan Nature Reserve during November 2013 to March 2014. The foraging time budget and vigilance frequency were obtained by objective sampling method, the biomass of food was obtained by random sampling method, and the food nutrition composition was tested. The results showed that G. monacha was mainly fed on Oryza sativa and Vicia faba at artificial habitats, while fed on the roots of Potentilla limprichtii and Polygonum criopolitanum at natural habitats. The main behavior of G. monacha was foraging at artificial habitats, and the proportion of foraging time was significantly higher than that at natural habitats(P<0.01). The proportion of vigilance time at natural habitats was significantly higher than that at artificial habitats(P<0.05); moreover, the vigilance frequency at artificial habitats was significantly higher than that at natural habitats(P<0.01). Compared with the food of natural habitats, rice and beans could provide higher energy and were easy to obtain. The optimal foraging theory was restricted by human disturbance for G. monacha.
2017,36(4): 392-397 收稿日期:2016-10-28
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