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Urban permeability for birds : An approach combining mobbing-call experiments and circuit theory

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Title: Urban permeability for birds : An approach combining mobbing-call experiments and circuit theory
Authors: Shimazaki, Atsushi 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: Corridor
Dispersal habitat
Field experiment
Isolated tree
Moving cost
Issue Date: 1-Sep-2016
Publisher: Elsevier
Journal Title: Urban forestry & urban greening
Volume: 19
Start Page: 167
End Page: 175
Publisher DOI: 10.1016/j.ufug.2016.06.024
Abstract: The urban matrix was recently shown to be a mosaic of heterogeneous dispersal habitats. We conducted a playback experiment of mobbing calls to examine the probabilities of forest birds to cross a distance of 50 m over urban matrix with different land-cover types in an urban area. We treated the reciprocal of the crossing probabilities as a movement resistance for forest birds. We drew resistance surfaces based on the land-cover maps of urban Sapporo. We applied a circuit theory to examine the relative role of a detour route consisting of a riparian corridor and urban matrix for dispersing forest bird individuals from continuous forest to an isolated green space in the midst of an urban area. Our results showed that wood cover had the highest crossing probability, while open land (grassland and pavement) had the lowest probabilities. Buildings and water surface displayed an intermediate probability. Resistance surfaces and flow maps at 25- and 50-m resolutions were very similar and suggested that dispersing individuals are likely to use the intervening building areas that dominate the urban matrix rather than detour through riparian corridors. Our results showed the useful combination of experimental approaches and circuit theory, and the importance of the spatial configuration of corridors, as well as the composition and management of dispersal habitats, to landscape connectivity.
Rights: © 2016 Elsevier GmbH. All rights reserved., ©2016. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
Type: article (author version)
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: 中村 太士

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