Seasonal Variation in Seaweed Community Structure in the Subtidal Zone of the Southern Part of the East Coast of Korea

摘要

Seasonal variability in algal community structure of the subtidal zone was examined at four study sites on the southeastern coast of Korea from February to November 2016. A total of 81 species of algae (8 green, 12 brown, and 61 red) were indentifled.During the study period, the greatest number of species was observed at Sinamri (57 species) followed by Daesongri (50 species), Dongbaekri (47 species) and Gangyangri (42 species). Of the six functional seaweed forms, the coarsely-branched form was themost dominant, accounting for about 43% of the total species at Daesongri. The annual average biomass in wet weight varied from 700.59 g/m2at Sinamri to 1,712.45 g/m~2at Daesongri. The parameters of seaweed community structures were as follows: dominance index (DI), 0.30-0.54; richness index (R), 4.92-7.05; evenness index (J'), 0.54-0.72; and diversity index (H'), 2.05-2.91.