Seaweed Community Analysis of a Rocky Shore for the Sustainable Seaweed Integrated Aquaculture System (SSIAS) in Korea

The ecological traits of the intertidal rocky shore seaweed communities were investigated for the site-specific development of the Sustainable Seaweed Integrated Aquaculture System (SSIAS) in Korea. Monthly phenological surveys of the intertidal communities were conducted in 2002 to obtan information on the wild seaweed species for their application to the SSIAS. The changes of the dominant species composition and their fresh weight and coverage were prominent among the seasons and sampling sites. Generally, brown algae, Laminaria japonica and Sargassum sp., were dominant in the winter; red algae were abundant in the spring and the autumn. Green alga, Ulva pertusa, showed the broadcast coverage year around. The C/N ratios of seaweeds and the ambient nitrogen concentrations were positively correlated.