• Journal of the Korean Society of Marine Environment & Safety
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• v.15 no.2
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• pp.99-104
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• 2009

The species composition and seasonal patterns in marine benthic algal community at intertidal zone in Jinhae Bay were investigated seasonally throughout 2007. A total of 45 species, 6 Chlorophyta, 10 Phaeophyta, and 29 Rhodophyta, were recorded, and dominant species were Ulva pertusa, U. conglobata, Sargassum horneri, Gelidium divaricatum, Gracilaria textorii, and Polysiphonia morrowii during study periods. The number of species were differed with seasons and stations; Higher number of algal species was 42 species in winter, whereas 33 species was lower in summer. The number of algal species were higher at station 1,7,8, while the lower value was at station 2, 3 than other stations. The differences of marine benthic algal composition at each station in MDS ordination due to the physical characteristics and local topography.

• ALGAE
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• v.17 no.2
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• pp.75-81
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• 2002

In this study the length of ITS2 from four species of the Ulvaceae in Jeju Island varied between 167 and 203 bp. The resuits of this investigation showed that two genus, Ulva and Enteromorpha are grouped in a monophyletic assemblage with 100% bootstrap support in all phylogenetic trees. However, a thorough eamination of these characters from representatives does not provided a way to identify any unique morphological features of clasdes in this tree. This study reveals that Ulva conglobata and Ulva pertusa belong to one clade in the phylogenetic tree with the samples from Jeju Island, Korea.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.39 no.3
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• pp.292-296
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• 2006

The antimicrobial activity of methanol extracts from 17 seaweeds was screened using a paper disc method and using three human skin pathogens: Staphylococcus aureus, S. epidermidis and Candia albicans. The serial extraction of Neorhodomela aculeata was also conducted using four different solvents (n-hexane, chloroform, ethyl acetate, and methanol) and the minimal inhibitory concentration (MIC) of each extract was examined for the three pathogens. Of the 17 seaweeds, the MeOH extracts of Ulva conglobata, N. aculeata and Symphyocladia latiuscula showed antimicrobial activities. For the extracts from N. aculeata and S. latiuscula, the inhibition zones were more than 10 mm in diameter against S. aureus and S. epidermidis, and >7mm for C. albicans. The inhibition zone of U. conglobata treatment was about 8 mm for S. aureus only. The MIC of each N. aculeata extract ranged from 8 to 32 mg/mL against the three human skin pathogens, and the lowest value (8 mg/mL was with the methanol extract. These results suggest that the MeOH extract of N. aculeata might be useful for developing new antibiotics against human skin pathogens.