Abstract
Avifauna in urban matrix may be influenced by forests and farmlands surrounded by the matrix. How does the matrix in the city center with few forests and farmlands work for birds? The purpose of this study was to clarify the effect of the green coverage ratio in the matrix of the city center on the birds appearing in small urban parks. We selected 29 urban parks ( area : 2561.21±371.97 ㎡ ) in the center of the Osaka City as study sites. Each site was visited three times for bird surveys in each of breeding and wintering seasons. Using the satellite images taken by Sentinel-2, we calculated the green coverage ratio around 29 urban parks. Moreover, we clarified the relationship between the appearing birds and the green coverage ratio in the matrix based on the hierarchical Bayesian model. As a result, the presence of large habitat patch in the urban matrix affected the appearance probability of some species. Furthermore, the result also showed that the green coverage ratio in the matrix during the wintering season influenced the probability of appearance of Hypsipetes amaurotis and Turdus pallidus which have features about eating fruits.
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