제주도내 하천의 부착규조 군집
Epilithic Diatom Communities in Streams of Jeju Island
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초록
To identify distribution of epilithic diatom assemblages and the relationship betweendiatoms and water chemistry, samples were collected twice a year from 2008 to 2012, from at 6streams in Jeju Island, South Korea. A total of 171 diatom taxa were identified, and Achnantheslanceolata, Gomphonema pumilum, Melosira varians, Navicula minima and Nitzschia palea weredominantly observed. BOD ranged 0.0~1.6 mg L-1, TN 0.230~13.240 mg L-1 (average 4.432 mgL-1), TP 0.020~0.316 mg L-1 (average 0.092 mg L-1), and N/P rate ranged 2.5~178.5. Average ofepilithic algal chlorophyll-a and AFDM were 1.1 μg cm-2 and 0.6 mg cm-2, respectively. Accordingto BOD standard, the water qualities of study area sites were at ‘Good’ level. However, thehealthiness levels assessed from DAIpo and TDI were ‘Fair’ to ‘Poor’.
Abstract
To identify distribution of epilithic diatom assemblages and the relationship betweendiatoms and water chemistry, samples were collected twice a year from 2008 to 2012, from at 6streams in Jeju Island, South Korea. A total of 171 diatom taxa were identified, and Achnantheslanceolata, Gomphonema pumilum, Melosira varians, Navicula minima and Nitzschia palea weredominantly observed. BOD ranged 0.0~1.6 mg L-1, TN 0.230~13.240 mg L-1 (average 4.432 mgL-1), TP 0.020~0.316 mg L-1 (average 0.092 mg L-1), and N/P rate ranged 2.5~178.5. Average ofepilithic algal chlorophyll-a and AFDM were 1.1 μg cm-2 and 0.6 mg cm-2, respectively. Accordingto BOD standard, the water qualities of study area sites were at ‘Good’ level. However, thehealthiness levels assessed from DAIpo and TDI were ‘Fair’ to ‘Poor’.
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