Japan Geoscience Union Meeting 2014

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Oral

Symbol A (Atmospheric, Ocean, and Environmental Sciences) » A-HW Hydrology & Water Environment

[A-HW28_30PM2] Water and material transport and cycle in watersheds: from headwater to coastal area

Wed. Apr 30, 2014 4:15 PM - 5:45 PM 314 (3F)

Convener:*Kazuhisa Chikita(Department of Natural History Sciences, Faculty of Science, Hokkaido University), Tomohisa Irino(Faculty of Environmental Earth Science, Hokkaido University), Shin-ichi Onodera(Graduate School of Integrated and Arts Sciences, Hiroshima University), Shinji Nakaya(Department of Civil Engineering, Faculty of Engineering, Shinshu University), Masahiro Kobayashi(Forestry and Forest Products Research Institute), Mitsuyo Saito(Graduate School of Environmental and Life Science, Okayama University), Seiko Yoshikawa(Narional Institute of Agro-Environmental Sciences), Noboru Okuda(Center for Ecological Research, Kyoto University), Chair:Shin-ichi Onodera(Graduate School of Integrated and Arts Sciences, Hiroshima University)

5:15 PM - 5:30 PM

[AHW28-P08_PG] Examination on the classification and ecological index of ponds based on the stability of stratification

3-min talk in an oral session

*Kenji OKUBO1, Mitsuyo SAITO1, Shinya TAKAGI1, Shin-ichi ONODERA2, Yutaka MARUYAMA2, Guangzhe JIN2, Daiki ARITOMI2, Yuta SHIMIZU3 (1.Okayama Univ., 2.Hiroshima Univ., 3.JSPS PD, NARO/WARC)

We aimed to examine on the classification and ecological index of the small ponds based on the stability of stratification. The seasonal variation of the stratification was examined using the monitoring data of water temperature in multiple depths in the 4 different ponds located on an island which is highly influenced by agricultural activity. DO, fluorescence, nutrients data were used for the evaluation of ecosystem condition.*This research is supported by the Grants-in-Aid for Scientific Research (A) (No. 25241028, Shin-ichi Onodera).