[A-CG40] Coastal Ecosystems 2. Coral reefs, seagrass and macroalgal beds, and mangroves

[ACG40-P01] Mitigation of environmental stresses on scleractinian corals and future perspective

*Tomihiko Higuchi¹ (1.Atmosphere and Ocean Research Institute, The University of Tokyo)

Keywords:coral bleaching, Mitigation of environmental stresses

Coral reefs are threatened by multiple environmental stresses at both the global and the local scales. Declining water quality in coastal reefs has been reported such as due to red soil runoff, agricultural fertilizers, and anti-fouling chemicals. Coral bleaching due to high water temperature has been frequently reported and it is one of big problem declining coral reefs. To solve these issues, the methods for mitigating environmental stresses on corals started to be investigated recently. Several invention methods including genetic, physiological and environmental approach with potential scale have been reported. For example, Coelho et al. (2017) reported that physical shading substantially reduced the degree of bleaching. Also, Biscéré et al. (2018) suggested that manganese increased coral resistance to heat stress-induced bleaching. However, there are lots of limitations and risks when these methods are conducted in the field. In this presentation, international attempts and inventions for coral conservation are reviewed and discussed future perspectives.