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Effects of land use and climate on the distribution of the Jungle Nightjar Caprimulgus indicus in Hokkaido, northern Japan

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/70895

Title: Effects of land use and climate on the distribution of the Jungle Nightjar Caprimulgus indicus in Hokkaido, northern Japan
Authors: Kawamura, Kazuhiro Browse this author
Yamaura, Yuichi Browse this author
Senzaki, Masayuki Browse this author
Yabuhara, Yuki Browse this author
Akasaka, Takumi Browse this author
Nakamura, Futoshi Browse this author →KAKEN DB
Keywords: Abundance
Forest cover
Playback
N-mixture models
Topography
Issue Date: Jul-2016
Publisher: Ornithological Society of Japan
Journal Title: Ornithological science
Volume: 15
Issue: 2
Start Page: 203
End Page: 212
Publisher DOI: 10.2326/osj.15.203
Abstract: Although the relative importance of land use and climate to large-scale bird distributions has received great attention, it is difficult to separate the effects of land use and climate, and there are few studies on bird abundance distributions on a large scale. Here, we examined the effects of land use and climate on the abundance of the nocturnal Jungle Nightjar Caprimulgus indicus in Hokkaido, northern Japan. We chose 125 sampling sites with low correlations (vertical bar r vertical bar<0.58) between land use and climate, and combined a playback method with a hierarchical model (N-mixture model). We thereby accounted for the possibility that we could not detect all individuals during the field survey. Results show that Jungle Nightjar abundance was greater at sites within a 4-km radius of moderate forest cover (similar to 75%) and with high average temperatures during the breeding season. Moreover, the effects of land-use were greater than those of climate. Mapping predictions of Jungle Nightjar abundance indicated that suitable areas are distributed in southern and central Hokkaido and around the margins of montane zones. Factoring in the covariation of land use and climate, land use may be the most important driver of the distribution of the Jungle Nightjar in Hokkaido.
Type: article
URI: http://hdl.handle.net/2115/70895
Appears in Collections:農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 河村 和洋

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