農村域の立地評価を目的としたカエル類の指標種選定のための調査方法

概要

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In this study, we tried selection the index species in frogs and toads, because it was necessary to verify the relation with the population density of the index species and the ecological location type in rural landscape planning. The fauna composition and seasonal changes in the number of frogs was investigated by visual encounter survey and audio strip survey in hilly area, northern Kanto in 2006. Two species, Rana japonica and R. porosa porosa, has been selected as the index species for evaluation of the habitat quality. And the evaluation by the calculation value of yearlings should be low validity, and use the calculation value of adults. The suitable investigation season of two species for quantitative survey was clarified. In addition, it was shown that the presence of R. rugosa was able to become indices of various frog species composition when limiting it to the environment where the rice field existed.
社団法人　日本造園学会の論文