Development of HEP in the process of ecological impact mitigation

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To contribute to strategic nature conservation and restoration, habitat evaluation methods and related subjects were studied at the field of sites, where some sorts of nature restoration or conservation activities are in the current issue of concern. Major results are as follows.(1) To restore small lake systems around Biwa lake, soil seed bank method considering temperature is a promising method to restore original vegetation such as Potamogeton malaianus, endangered species.(2) Aquatic vegetation such as wide width of reed communities are expected to be a nursery and refuge habitat for indigenous fish fauna such as Carassius auratus grandoculis, which is more tolerant to anaerobic conditions than exotic species such as black bass.(3) Habitat model was established in the case of Salamanders in dead water region, and several species. In the case of dynamic environment, such as meta-population theory is applied, simple HEP is not applicable, because PVA shows different results.(4) A new GAP analysis method using potential habitat estimation, using physiological properties, is developed in the case of Kyoto city area.(5) Genetic analyses of endangered aquatic species provided important information on regional characteristics on the distribution and propagation strategy of each target species of restoration.(6) Hierarchical consideration, stream system - segment - reach - habitat, for river nature restoration concept for nature restoration is applied to several projects. Multi - Before - After - Reference - Control - Impact sampling for the evaluation of nature restoration project is proposed Basic procedure for evaluation on nature restoration is proposed.(7) Desiccation process and restoration process in the Aral Sea crisis could be evaluated by the top predator species, pelicans, by the HSI model using satellite tracking.