著者
平井 利明 木村 俊介
出版者
一般社団法人 日本生態学会
雑誌
日本生態学会誌 (ISSN:00215007)
巻号頁・発行日
vol.54, no.3, pp.159-163, 2004-12-25 (Released:2017-05-26)
参考文献数
22
被引用文献数
1

We conducted fecal analysis of the common bat, Pipistrellus abramus, foraging above rice fields in Kyotanabe City, Kyoto, Japan. Two classes and eight orders of arthropods were identified. Most of the prey arthropods were flying insects such as Diptera, Hemiptera, and Hymenoptera. The diet composition varied seasonally, and the principal prey taxon changed from Diptera in June to Hemiptera in September.
著者
八木 宏 POKAVANICH Tanuspong 灘岡 和夫 白井 一洋 木村 俊介 下迫 健一郎
出版者
Japan Society of Civil Engineers
雑誌
土木学会論文集B2(海岸工学) (ISSN:18842399)
巻号頁・発行日
vol.66, no.1, pp.956-960, 2010 (Released:2010-11-09)
参考文献数
11

Temporal and spatial variations of suspended particulate matter (SPM) in Tokyo Bay were investigated based on intensive field surveys and numerical simulation. Measurement results showed that the relative high turbidity appeared in the front of bottom high saline water and the middle turbid layer was generated corresponding to the middle hypoxic water generation induced by the intrusion of offshore oceanic water. The neutral tracer tracking simulation shows that bottom SPM have a characteristic to distribute along the front of bottom high saline water which forms the streak pattern from off Tama river mouth to off Chiba port in the south wind period and moves to the head region in north wind period. Furthermore the neutral tracer tracking and water quality simulations revealed that the bottom SPM can be moved upward by the intrusion of oceanic water in the bottom layer due to the change of wind direction or offshore water variations.