September 2000, Amsterdam - Projects - Japan


Yohei Kurauchi (17)
School: Hokkaido Sapporo Takuhoku High School
Hobbies: Club activities and dragonfly-collecting
Career intention: Environmental biologist
E-mail: Krauchi@msn.com

Kengo Ota (17)
School: Hokkaido Sapporo Takuhoku High School
Hobbies: Club activities and insect collecting
Career intention: Marine biologist

Kozue Yamada (18)
School: Hokkaido Sapporo Takuhoku High School
Hobbies: Club activities
Career intention: High school teacher

Inferred dragonfly species previously inhabiting our hometown
Next to our schoool lies a march where manyu droagonflies have inhibited. We love dragonflies and the environment they can live in , but due to the urbanization in our hometown their fauna has been drastically changed. In our project the succession by the artificial disturbance of the dragonfly fauna in our hometown is investigated. We did this at seven sites, including 6 rivers and a bog in the Northern part of Sapporo City and we indicate the results by a dendrogram. Of the dragonfly species currently found in our hometown, majority is found to be pond-inhabitans, whereas bog-inhabitants appear to have exterminated by modification of the natural envireonment. That's bog-inhabitants can not inhabit in secondary fauna by artificial disturbance. Thus, we conclude that dragonflies of the bog-inhabitant category could survive only by preserving the whole bog .