한국수산과학회

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  • 0374-8111
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kfas, vol. 54, no. 6, pp.1007-1016, December, 2021
DOI. https://doi.org/10.5657/KFAS.2021.1007

Ecological Evaluation of the Spring and Summer Subtidal Marine Algal
Communities Along the East Coast of Korea
동해안 춘·하계 조하대 해조군집의 생태학적 평가

한수진·김영윤·김현정·황철희*
해양생태기술연구소

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’.

Keyword : Seaweed, Community structure, Ecological state groups, EEI-c, Ecological index

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