東京湾沿岸部埋立地における緑被分布とバッタ類の生息分布との関係について

概要

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This study aimed to understand the quality of the green space in the reclaimed land of Tokyo bay area from the aspect of organisms. The method to sort the green space environment of reclaimed land on the artificial ground with ecological function has not been examined. In this research, we selected Orthoptera (grasshopper, katydid and grig) as an index organism because it is closely related to the structure of green space and expected to inhabit on artificially made land. Therefore, the biotope type of the seaside area was examined with the relation to the habitat of Orthoptera and to the environmental information of green coverage. In this investigation, we recorded the number of individuals and the species of Orthoptera at 72 sites such as the parks, greenbelts, and planted zones. The relationship between environmental information of green coverage and habitat information of Orthoptera was analyzed based on the green classified chart. We classified groups of Orthoptera by TWINSPAN and analyzed the relationships of individual number of Orthoptera groups with environmental factors, using GLMM. In the result, Orthoptera groups receives the influence about distribution of green coverage in the near area and the distance from existing habitat.