Allelopathic effect of Corallina pilulifera on Heterosigma akashiwo and its responses to UV-B irradiation Effects of CO2-induced seawater acidification on photosynthesis and calcification in the coralline alga Corallina pilulifera Comparative Studies on the Allelopathic Effects of Ulva pertusa Kjellml, Corallina pilulifera Postl et Ruprl, and Sargassum thunbergii Mertl O. Kuntze on Skeletonema costatum (Grev.) Cleve Chemical constituents from red alga Corallina pilulifera