マイクロデータロガーや超音波発信機、音響記録計などの情報機器を利用した水圏生物の生態解析、ならびにこれらの機器開発を行う。研究目的は生物の「いつ、どこで、なにを、どれくらい」を明らかにすること。小型魚類から大型哺乳類まで幅広い海洋生物を対象とする。

This project is to analyze the ecology of aquatic organisms using information devices such as microdata loggers, ultrasonic transmitters, and acoustic recorders, as well as to develop such devices. The purpose of the research is to clarify the “when, where, what, and abundance” of organisms. The research targets a wide range of marine organisms from small fishes to large mammals.

現在、国内外のフィールドにおいてニホンウナギ、クロマグロ、アメマス、イトウ、スズキ、ホシガレイ、イセエビ、メコンオオナマズなどの魚介類、ならびにジュゴンやイルカなどの海産哺乳類の行動生態研究を実施。

Currently, we conduct research on the behavioral ecology of fish and shellfish such as Japanese eels, bluefin tuna, white-spotted char, Japanese huchen, sea bass, spotted halibut, Japanese lobsters, and Mekong giant catfish, as well as marine mammals such as dugongs and dolphins, in domestic and overseas fields.

音響記録計などの情報機器を用いて、建設や騒音などの人為的な要因が水圏生物に与える影響の評価に取り組んでいる。現在、主な対象種は、生態系ピラミッド構造すなわち食物連鎖の頂点の消費者（アンブレラ種）であるイルカ、ジュゴンなどの水棲大型動物。

We are working to assess the impacts of anthropogenic factors such as construction and noise on aquatic organisms by using acoustic recorders and other information equipment. Currently, the main target species are large aquatic animals such as dolphins and dugongs, which are consumers (umbrella species) at the top of the ecological pyramid structure, or food chain.

太平洋側・日本海側の沿岸域でフィールド調査を実施して陸棚海域から海岸部までの領域における炭素・窒素・リンのフローの解明、ならびに豊かな海を維持する環境管理に使用できるツールの開発を行っている。

We conduct field studies in coastal areas on the Pacific and Japan Sea sides to elucidate the flow of carbon, nitrogen, and phosphorus in the region from shelf waters to coastal areas, as well as to develop tools that can be used for environmental management to maintain a rich marine environment.

現在、河川水・地下水等の海岸線からの淡水流入が、海の生態系に及ぼす影響を定量的に評価して陸と海のつながりを解明する研究、温暖化や集中豪雨の増加が海の生物生息環境に及ぼす影響を解明する研究に取り組んでいる。

Currently, we are engaged in research to clarify the connection between land and sea by quantitatively evaluating the effects of freshwater inflows from the coastline, such as river water and groundwater, on marine ecosystems, and to reveal the effects of global warming and increased torrential rainfall on marine habitats.