Seaweed Beds and Community Structure in the East and South Coast of Korea
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 b...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-05-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/10/5/689 |
| _version_ | 1827668350795251712 |
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| author | Seung Wook Jung Hyun Soo Rho Chang Geun Choi |
| author_facet | Seung Wook Jung Hyun Soo Rho Chang Geun Choi |
| author_sort | Seung Wook Jung |
| collection | DOAJ |
| description | 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/m<sup>2</sup> (0.29–273.60 g/m<sup>2</sup>) in the eastern coasts, where red algae—an annual opportunity species—were dominant, and 21–48 species and an average of 1056.84 g/m<sup>2</sup> (53.03–2683.02 g/m<sup>2</sup>) 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. |
| first_indexed | 2024-03-10T03:37:40Z |
| format | Article |
| id | doaj.art-7815d043bfb3418f8916f0f930569acd |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-10T03:37:40Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-7815d043bfb3418f8916f0f930569acd2023-11-23T11:40:23ZengMDPI AGJournal of Marine Science and Engineering2077-13122022-05-0110568910.3390/jmse10050689Seaweed Beds and Community Structure in the East and South Coast of KoreaSeung Wook Jung0Hyun Soo Rho1Chang Geun Choi2Department of Ecological Engineering, Pukyong National University, Busan 48513, KoreaEast Sea Environment Research Center, East Sea Research Institute, Korea Institute of Ocean Science and Technology, Uljin 36315, KoreaDepartment of Ecological Engineering, Pukyong National University, Busan 48513, KoreaThis 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/m<sup>2</sup> (0.29–273.60 g/m<sup>2</sup>) in the eastern coasts, where red algae—an annual opportunity species—were dominant, and 21–48 species and an average of 1056.84 g/m<sup>2</sup> (53.03–2683.02 g/m<sup>2</sup>) 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.https://www.mdpi.com/2077-1312/10/5/689barren groundcommunity stateEEI-c modelmelobesidean algaeseaweed beds |
| spellingShingle | Seung Wook Jung Hyun Soo Rho Chang Geun Choi Seaweed Beds and Community Structure in the East and South Coast of Korea Journal of Marine Science and Engineering barren ground community state EEI-c model melobesidean algae seaweed beds |
| title | Seaweed Beds and Community Structure in the East and South Coast of Korea |
| title_full | Seaweed Beds and Community Structure in the East and South Coast of Korea |
| title_fullStr | Seaweed Beds and Community Structure in the East and South Coast of Korea |
| title_full_unstemmed | Seaweed Beds and Community Structure in the East and South Coast of Korea |
| title_short | Seaweed Beds and Community Structure in the East and South Coast of Korea |
| title_sort | seaweed beds and community structure in the east and south coast of korea |
| topic | barren ground community state EEI-c model melobesidean algae seaweed beds |
| url | https://www.mdpi.com/2077-1312/10/5/689 |
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