변산반도 해조류 군집구조의 계절적 변동 (Seasonal Variation in Macroalgal Community Structure around the Byeonsan Peninsula, Korea)

서지정보

· 발행기관 : 한국수산과학회
· 수록지 정보 : 한국수산과학회지 / 47권 / 3호 / 274 ~ 282페이지
· 저자명 : 한수진, 최한길, 이지회, 전다빈, 오지철, 김보연, 박향하, 남기완

초록

We examined seasonal variation in the structure of marine macroalgal communities at five sites around the Byeonsan Peninsula, Korea, from January to October 2011. Sixty eight species were identified, including 11 green, 17 brown and 40 red algae. Species richness was highest at Gyeokpo (51 species) followed by Sambal (47), Gosapo (34), Byeonsan (33), and Habgoo (18). Seaweed biomass ranged from 12.98 to 145.33 g dry wt/m2, with maximum and minimum biomasses at Gyeokpo and Habgoo, respectively. Sargassum thunbergii was the representative alga spe- cies occupying 47.89% of the total biomass. The dominant seaweeds were S. thunbergii, Corallina pilulifera , Ulva spp, Gracilaria vermiculophylla , and Carpopeltis affinis . No distinctive vertical distribution of seaweeds was found because S. thunbergii, Ulva spp, and G. vermiculophylla were all distributed from high to low shore. Community indices were as follows: dominance index (DI), 0.44–0.61; richness index (R), 6.27–10.35; evenness index (J'), 0.38–0.59; and diversity index (H'), 1.48–1.71. Gyeokpo had the most biomass and highest species richness, and the lowest percentage of Ulva species. However, species richness declined at Gyeokpo, from 78 to 51 species within 10 years, implying that eutrophication and sedimentation from Mankyeong and Dongjin rivers have reduced the stability of seaweed communities.

영어초록

We examined seasonal variation in the structure of marine macroalgal communities at five sites around the Byeonsan Peninsula, Korea, from January to October 2011. Sixty eight species were identified, including 11 green, 17 brown and 40 red algae. Species richness was highest at Gyeokpo (51 species) followed by Sambal (47), Gosapo (34), Byeonsan (33), and Habgoo (18). Seaweed biomass ranged from 12.98 to 145.33 g dry wt/m2, with maximum and minimum biomasses at Gyeokpo and Habgoo, respectively. Sargassum thunbergii was the representative alga spe- cies occupying 47.89% of the total biomass. The dominant seaweeds were S. thunbergii, Corallina pilulifera , Ulva spp, Gracilaria vermiculophylla , and Carpopeltis affinis . No distinctive vertical distribution of seaweeds was found because S. thunbergii, Ulva spp, and G. vermiculophylla were all distributed from high to low shore. Community indices were as follows: dominance index (DI), 0.44–0.61; richness index (R), 6.27–10.35; evenness index (J'), 0.38–0.59; and diversity index (H'), 1.48–1.71. Gyeokpo had the most biomass and highest species richness, and the lowest percentage of Ulva species. However, species richness declined at Gyeokpo, from 78 to 51 species within 10 years, implying that eutrophication and sedimentation from Mankyeong and Dongjin rivers have reduced the stability of seaweed communities.

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