Seaweeds are an important biotic resource capable of capturing carbon and used widely as food, medicine and as raw material for industrial purposes. Warming and altered pH can affect seaweeds in different ways . Outbreak of intense blooms of species like Ulva rigida  and Ulva prolifera  have increased due to varied factors including climate change. These blooms have created huge economic losses in the Yellow Sea affecting local mariculture, tourism and the functioning of the coastal and marine ecosystems . Increased temperature was found to enhance the dark respiration and light compensation point of Ulva conglobate, which thrives in the mid-intertidal to upper subtidal zones, while the altered pH showed a limited effect . Elevated temperature significantly enhanced growth, photosynthetic performances and carbon-use efficiency of Sargassum horneri in both elevated and ambient CO2 levels suggesting that the present greenhouse effect would benefit the golden tide blooming macroalgae Sargassum horneri, which might enhance both the frequency and scale of golden tide .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report