Koki Tsujii

Change in singing behavior of humpback whales caused by shipping noise

N. Umeda, T. Akamatsu, Koki Tsujii, 2018, PloS one.

Interchanges and movements of humpback whales in Japanese waters: Okinawa, Ogasawara, Amami, and Hokkaido, using an automated matching system

Takashi Yoshikawa, Koki Tsujii, Ryosuke Okamoto, 2022, PloS one.

Fin whale (Balaenoptera physalus) song pattern in the southern Chukchi Sea

Koki Tsujii, Y. Mitani, Shiho Furumaki, 2021, Polar Biology.

The migration of fin whales into the southern Chukchi Sea as monitored with passive acoustics

Ikuo Matsuo, Tomonari Akamatsu, Kazuo Amakasu, 2016 .

Seasonal variations in the call presence of bearded seals in relation to sea ice in the southern Chukchi Sea

K. Miyashita, Koki Tsujii, Y. Mitani, 2019, Polar Biology.

Tidal effects on periodical variations in the occurrence of singing humpback whales in coastal waters of Chichijima Island, Ogasawara, Japan

T. Akamatsu, Koki Tsujii, Ryosuke Okamoto, 2022, Scientific Reports.

Annual variation of oceanographic conditions changed migration timing of bowhead whales Balaena mysticetus in the southern Chukchi Sea

T. Akamatsu, K. Miyashita, Koki Tsujii, 2021, Polar Biology.