The importance of willow to the Chinese Grouse: evidence from analysis on their breeding territories at Lianhuashan, China
摘要Background: The habitat features of breeding territory have important adaptive significance for the survival and reproduction of territory holders. The Chinese Grouse (Tetrastes sewerzowi) is a rare and endemic species with rela-tively small distribution range and decreasing population trend. It is important to elucidate breeding territory habitat requirements of the Chinese Grouse for habitat management and conservation actions. Methods: Using radio-telemetry and field observations, we determined the core areas of 65 breeding territories of males. Two to three samples were selected in each core breeding territory as used sites and compared with nearby sites with no grouse occurrence using logistic regression. Results: Our model showed a high accuracy in prediction of core breeding territory used by males, which preferred stands with more small deciduous trees (0.5 m ≤ height < 5 m), more small willow trees (Salix spp.,0.5 m≤ height < 5 m), greater willow cover, and greater herb cover. The number of small willow trees had the great-est influence on males'core breeding territory selection. Dense shrubs were also chosen compared with unused sites. Tall conifer trees was an important determinant in the distribution of Chinese Grouse at the landscape scale, and was relatively important in the univariate model, but not included in our final multivariable model. Conclusions: Male Chinese Grouse established territories at sites with abundant food resources. At the landscape scale, the Chinese Grouse occurred in alpine conifer forest. At the territory scale, small willow trees had the most important effect on males'core breeding territory selection. We suggest that the forest gaps in dense conifer for-est are important for improving the occurrence of willows and facilitating breeding territory establishment for the Chinese Grouse.
更多相关知识
- 浏览15
- 被引0
- 下载4

相似文献
- 中文期刊
- 外文期刊
- 学位论文
- 会议论文