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http://dx.doi.org/10.5657/KFAS.2021.1007

Ecological Evaluation of the Spring and Summer Subtidal Marine Algal Communities Along the East Coast of Korea  

Han, Su Jin (Marine Eco-Technology Institute Co., Ltd.)
Kim, Young-Ryun (Marine Eco-Technology Institute Co., Ltd.)
Kim, Hyun-Jung (Marine Eco-Technology Institute Co., Ltd.)
Hwang, Choul-Hee (Marine Eco-Technology Institute Co., Ltd.)
Publication Information
Korean Journal of Fisheries and Aquatic Sciences / v.54, no.6, 2021 , pp. 1007-1016 More about this Journal
Abstract
This study examined the characteristics and seasonal distribution patterns of subtidal marine algal communities along the east coast of Korea, from 2016 to 2017, and recorded the coverage ratio (%) by the algal type. During the study period, 134 marine algae species (16 green, 29 brown, and 89 red) were identified at the survey sites. The maximum number of species was observed at the Nagok site (70 species), and the minimum at the Gisamoon site (50 species). The total average biomass (dry weight) during the survey period was 66.22 g/m2, including green algae (2.19 g/m2), brown algae (38.10 g/m2), and red algae (25.94 g/m2). The dominant seaweeds in the vertical distribution based on coverage rates (%) were Sargassum yezoense and Dictyopteris divaricata at the upper, Symphyocladia latiuscula and Undaria pinnatifida at the middle, and Agarum clathratum subsp. yakishiriense and Plocamium telfairiae at the lower sections of the distribution. Richness, evenness, and diversity index, calculated based on the biomass of the abundant species, were estimated to be 6.36, 0.55, and 1.98, respectively, over the entire sea area. Based on the evaluation of the environmental states using community indices, the ecological evaluation index (EEI-c) of subtidal marine algal communities along the east coast of Korea was marked as 'good-moderate'.
Keywords
Seaweed; Community structure; Ecological state groups; EEI-c; Ecological index;
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