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강필준,김영식,남기완,Kang, Pil-Joon,Kim, Young-Sik,Nam, Ki-Wan 한국조류학회(藻類) 2008 ALGAE Vol.23 No.4
Marine algal flora and community structure were investigated seasonally at three sites in Ilkwang Bay on the southern east coast of Korea from May 2007 to February 2008. Total 103 species including 10 of green algae, 17 of brown algae, 76 of red algae were collected and identified. Among these species, 21 species were found throughout the year. Ulva pertusa, Enteromorpha linza, Grateloupia lanceolata, Chondracanthus intermedia and Caulacanthus ustulatus were distributed dominantly in upper intertidal zone. By contrast, crustose coralline algae, Grateloupia spp., Chondracanthus tenellus, Prionitis cornea and Sargassum spp. occurred predominantly in middle intertidal zone. Grateloupia spp., Sargassum spp., Ecklonia cava and Ulva pertusa were dominant in lower intertidal zone. Annual mean biomass in wet weight was 478.3 g m$^{-2}$. Maximum biomass was recorded in site 1 (731.8 g m$^{-2}$), and minimum was recorded in site 3 (78.5 g m$^{-2}$). The R/P, C/P and (R + C)/P value reflecting flora characteristics were 4.47, 0.59 and 5.06, respectively. Two groups produced by cluster analysis, one including sites 1, 2 and the other including site 3, showed meaningful difference in similarity, each other. Site 3 showed the limited species composition due to inflow of fresh water and absence of solid substratum. However, there was no significant difference between site 1 and site 2. In conclusion, the number of marine algae species and biomass in Ilkwang Bay were markedly reduced comparing with the previous studies. These suggest that a solution for reconstruction of the poor marine algal vegetation is considerably demanded.
가시파래(Ulva prolifera)의 생장에 미치는 온도 및 조도의 영향
강필준 ( Pil Joon Kang ),남기완 ( Ki Wan Nam ) 한국수산과학회(구 한국수산학회) 2016 한국수산과학회지 Vol.49 No.6
The effects of temperature and irradiance on the growth of Ulva prolifera O.F. Muller (Chlorophyta), which has been used commercially as food in Korea, were examined in laboratory culture to conserve the strain. Experiments were conducted under combined factors of temperatures of 5, 10, 15, 20 and 25℃ and irradiances of 30, 50, 80 and 100 μmol m<sup>-2</sup> s<sup>-1</sup>. The maximum growth of the U. prolifera germlings was observed at 20℃ and 80 μmol m<sup>-2</sup> s<sup>-1</sup>, and the minimum growth was recorded at 5℃ and 100 μmol m<sup>-2</sup> s<sup>-1</sup>. Considering these results, the species appears to survive under wide ranges of temperature and irradiance, although growth is inhibited by high irradiances of over 100 μmol m<sup>-2</sup> s<sup>-1</sup>. This appears to be due to the in situ habitat niche of Ulva prolifera, which is the middle to lower intertidal zone. In conclusion, optimal conditions for the long-term conservation of Ulva prolifera can be established under relatively low temperatures (5℃) and high irradiance (100 μmol m<sup>-2</sup> s<sup>-1</sup>), while the optimal conditions for mass production are 20℃ and 80 μmol m<sup>-2</sup> s<sup>-1</sup>.