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Zoological Research
Kunming Institute of Zoology, Chinese Academy of Sciences
ISSN: 2095-8137
Vol. 32, No. 2, 2011, pp. 150-156
Bioline Code: zr11021
Full paper language: Chinese
Document type: Research Article
Document available free of charge

Zoological Research, Vol. 32, No. 2, 2011, pp. 150-156

 en Roosting-site characteristics of wintering black-necked cranes ( Grus nigricollis check for this species in other resources ) at Napahai, Yunnan
He, Peng; Kong, De-Jun; Liu, Qiang; Yu, Hong-Zhong; Zhao, Jian-Lin & Yang, Xiao-Jun

Abstract

From November 2009 to April 2010, roosting-site characteristics of black-necked cranes ( Grus nigricollis check for this species in other resources ) were observed at Napahai Provincial Nature Reserve, Shangri-La, Yunnan, China. The positions of roosting-sites were determined by triangulation with markers and field correction. All of the 63 roosting-sites observed were located in patchy marshes with water, which contained some mud on the bottom and 81% of the roosting-sites were covered by plants. They also had a certain distance to areas of human activities and had a certain distance to the shore. A comparison of roosting sites and random sites showed that roosting-sites had thicker mud layers, a higher ratio of open water, longer distance to roads, villages, and farmland, and water depth. Another comparison of before and after usage of roosting-sites found a significant difference in area of marsh patch. Principal component analysis indicated that the usage of roosting-site of black-necked cranes was affected by human disturbance, area of marsh patch, and the condition of the shallow water environment.

Keywords
Black-necked crane; Roosting-site characteristics; Napahai

 
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