Program and Agenda

Abstract

NEAR FUTURE PROJECTION OF OCEAN WARMING-INDUCED SEAWEED DEFORESTATION IN JAPANESE COASTAL AREAS

Seaweed beds play a key role in providing essential habitat and energy to coastal areas, with enhancements of productivity, biodiversity, and human economies. However, seaweed beds around Japan have decreased due to coastal reclamation, water quality change, and sea deforestation. Using monthly mean sea surface temperature (SST) from 1950 to 2035 obtained by a high-resolution climate projection model (MIROC4h) and SST-based indices for seaweed deforestation of Ecklonia cava Kjellman, which predominates in the south part of Japan, we quantitatively evaluated the effects of SST rises on seaweed deforestation of E. cava in Japanese coastal areas. In the 1950s, seaweed deforestation of E. cava was found in only a small part of the Japanese coast. Under the global warming scenario (RCP4.5), the climate model projected that the extent of seaweed deforestation of E. cava can spread all over the coasts in Japan by the 2010s to 2020s. These results suggest that ocean warming-induced seaweed deforestation can cause heavy damage to existing seaweed beds of E. cava around Japan by the 2020s.

ePoster:

Authors

Takao, S., Faculty of Environmental Earth Sciences, Hokkaido University, Japan, takao@ees.hokudai.ac.jp

Kumagai, N., Center for Environmental Biology and Ecosystem Studies, National Institute for Environmental Studies, Japan, kumagai.naoki@nies.go.jp

Yamano, H., Center for Environmental Biology and Ecosystem Studies, National Institute for Environmental Studies, Japan, hyamano@nies.go.jp

Fujii, M., Faculty of Environmental Earth Sciences, Hokkaido University, Japan, mfujii@ees.hokudai.ac.jp

Yamanaka, Y., Faculty of Environmental Earth Sciences, Hokkaido University, Japan, galapen@ees.hokudai.ac.jp

Details

Poster presentation

Session #:081
Date: 2/26/2014
Time: 16:00 - 18:00
Location: Poster/Exhibit Hall

Presentation is given by student: No

PosterID: 2725