A Study on the Community Structure of Intertidal Benthic Marine Algae in Youngil Bay, Eastern Coast of Korea

Park, Gyu Jin; Choi, Chang Geun

doi:10.5657/kfas.2009.42.6.664

Cited by 3 publications

(1 citation statement)

References 10 publications

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“…Previous studies on marine algal ecology in Yeongil Bay have been conducted by researchers [16][17][18][19][20][21], but most of them were qualitative studies. Other fields of study have been conducted on the environment and community structure of the inner area of Yeongil Bay, including research on seawater flow structure, oceanographic characteristics, and the distribution of phytoplankton [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Spatial Difference in the Marine Algal Community of Yeongil Bay Inner and Outer Areas on the East Coast of Korea

Park

Jung

Han

et al. 2023

JMSE

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This study examined the seasonal and spatial changes in the marine algal community structure in the outer and inner areas of the intertidal zone of Yeongil Bay. A seasonal survey was conducted at 13 intertidal sites in Yeongil Bay between August 2021 and July 2022. Algal samples were collected using a destructive approach, and the marine algal community was analyzed based on species composition, biomass, and the important value (IV) index. To confirm the differences between the outer and inner areas, ANOSIM and SIMPER analyses were conducted based on the biomass and IV indices of the marine algal species. The marine algal communities in the outer and inner areas of Yeongil Bay differed because of the high contribution of Ulva spp., as determined using the IV index. Our findings suggest that there was an influx of nutrients into Yeongil Bay from the Hyeongsan River, which had remained in the inner area for an extended period because of the slow current. This allowed Ulva spp., an opportunistic species, to bloom quickly and dominate the marine algal communities in the inner area. These results indicate a difference in the structure of marine algal communities between the outer and inner areas owing to the proliferation of Ulva spp. Therefore, Ulva spp. can be used as a target species to monitor the marine environment of Yeongil Bay.

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Section: Introductionmentioning

confidence: 99%

Spatial Difference in the Marine Algal Community of Yeongil Bay Inner and Outer Areas on the East Coast of Korea

Park

Jung

Han

et al. 2023

JMSE

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Seaweed Beds and Community Structure in the East and South Coast of Korea

Jung

Rho

Choi

2022

JMSE

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This study conducted a community investigation via scuba-diving excursions into the subtidal regions of seven sea areas on the eastern coasts and three sea areas on the southern coasts, from October to December 2017, to determine the characteristics of seaweed communities and the current status of barren ground in natural seaweed beds in Korea. The results showed that species composition and average biomass in the sea area were 5–48 species and an average of 114.42 g/m2 (0.29–273.60 g/m2) in the eastern coasts, where red algae—an annual opportunity species—were dominant, and 21–48 species and an average of 1056.84 g/m2 (53.03–2683.02 g/m2) in the southern coasts, where perennial large brown algae were dominant. Using Orfanidis’ EEI-c model, evaluations of the community states showed they varied significantly depending on the inclusion of melobesidean algae, and this model was determined to be inappropriate for direct application in sea areas with a low coverage of all macroalgae. A comprehensive review of the seaweed community characteristics of seaweed beds, the marine environment, the coverage of melobesidean algae, and the analysis results regarding the density of grazers showed that a decrease in the seaweed community, according to the barren ground phenomenon, was more severe in the eastern than southern coasts. Furthermore, there were also significant differences in seaweed community characteristics according to sea area and barren ground. Therefore, suitable countermeasures corresponding to the characteristics of each sea area are necessary; for example, the creation of growth substrates for the colonization of macroalgae in Deoksin and Saido Is., the transplantation of large brown algae in Gangyang and Daedurado Is., action plans for marine forest monitoring in Geomundo Is., and an improvement in substrates in Yeongjin, Mangsang, Daejin, Chogok, and Geundeok are possible countermeasures.

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