Japan Geoscience Union Meeting 2019

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[J] Poster

O (Public ) » Public

[O-03] Poster presentations by senior high school students

Sun. May 26, 2019 1:45 PM - 3:15 PM Poster Hall (International Exhibition Hall8, Makuhari Messe)

convener:Tatsuhiko Hara(International Institute of Seismology and Earthquake Engineering, Building Research Institute), Katsuyoshi Michibayashi(Department of Earth and Planetary Sciences, Nagoya University), Miwa Kuri(International Research Institute of Disaster Science, Tohoku University), Kou Yamada(Waseda University)

1:45 PM - 3:15 PM

[O03-P65] Ecological study on Micrasterias hardyi recently invaded to Lake Biwa: its dependency on water temperature

*Ayane Kawai1, Michio Kumagai2 (1.Shiga Prefectural Ishiyama High School, 2.Authorised NPO Biwako Trust)

Keywords:Micrasterias hardyi, Lake Biwa, water temperature

In August 2016, I saw Micrasterias hardyi at first, which is an invaded phytoplankton in Lake Biwa, and I was attracted by its beautiful microscopic shape. Micrasterias hardyi made a big bloom in Lake Biwa in 2016, and became in a comparative lull in 2017, but it increased rapidly again in 2018. I have studied the morphology, vertical distribution and settling velocity of Micrasterias hardyi since then. This time, as I made laboratory experiment to understand the dependency of Micrasterias hardyi on water temperature, I will show the results.