Monitoring of coral reef echosystem by underwater biological sounds

Bleaching of corals was serious in 2016 due to the high water temperature globally. Consequently, ecosystems in coral reefs changed quickly and its biodiversity would be reduced. In this research, we will try to measure the biodiversity using repertoire of biological sounds as an index. The underwater sounds will be monitored in real-time and biodiversity map will be provided.

CREST : Development of remote species identification technologies for marine organisms

Sustainable use of marine bio-resources and protection of environment will be realized if distribution and movement of each aquatic species will be provided on the Internet like a weather forecast. We will develop remote identification technologies of species and numbers of organisms without catching or viewing them. Identification of species and counting number of individuals will be conducted by passive and active sonar systems. The goal of this project is to develop remote identification method for every aquatic species including planktons and whales in the ocean echo system as well as the environmental factors such as human impacts and earthquakes using cutting-edge acoustic technologies.

Finding most silent lake in Japan

Low frequency sound calibration of underwater microphone (hydrophone) is essential for the assessment of effect of underwater noise on aquatic animals. Supported by KAKENHI, most silent lake, which is suitable for the low frequency sound playback and reception will be identified.

Effect of ship noise on humpback whales

Ocean noise pollution is getting to be a major issue for the environmental assessment of maritime transportation and engineering. A Japanese team launched a new project to observe possible effects of ship noise on humpback whales in Ogasawara archipelago.

inserted by FC2 system