낙동강의 식물플랑크톤 군집의 계절 변화 (Seasonal Variation of Phytoplankton Community in the Naktong River)

서지정보

· 발행기관 : 한국조류학회I
· 수록지 정보 : ALGAE / 17권 / 4호 / 267 ~ 273페이지
· 저자명 : 이정호, 권정남, 양상용

초록

A seasonal variation of phytoplankton community in the Naktong River was studied in seven sampling stations
at monthly intervals from April 2000 to March 2001. Environmental factors such as conductivity, total phosphorus,
total nitrogen and BOD were much higher at a lower reaches than the upper reaches. Especially, they rapidly
increased at the st. 4 located near the discharge of the Kumho River. Total 239 taxa observed in the study were classified
into 201 species, 22 varieties, 2 forma, 1 morphotype and 13 unidentified species belonging to 102 genera, 39
families, 17 orders and 8 classes. The phytoplankton standing crops were recorded a maximum of 33,389 cells ·ml–1
at the st. 7 in June and a minimum of 139 cells ·ml–1 at the st. 1 in September. The correlations between averages of
the phytoplankton standing crops and some of environmental factors were investigated at each sampling station.
The coefficients of correlation between average of the phytoplankton standing crops and BOD, T-N and T-P were
0.61, 0.45 and 0.47, respectively. In general the dominant species were Achnanthes minutissima Kütz, Nitzschia fonticola
Grun., Navicula cryptotenella Lange-B in the upper reaches, Microcystis aeruginosa (Kütz.) Kütz. and Stephanodiscus
hantzschii Grun. in the lower reaches.

영어초록

A seasonal variation of phytoplankton community in the Naktong River was studied in seven sampling stations
at monthly intervals from April 2000 to March 2001. Environmental factors such as conductivity, total phosphorus,
total nitrogen and BOD were much higher at a lower reaches than the upper reaches. Especially, they rapidly
increased at the st. 4 located near the discharge of the Kumho River. Total 239 taxa observed in the study were classified
into 201 species, 22 varieties, 2 forma, 1 morphotype and 13 unidentified species belonging to 102 genera, 39
families, 17 orders and 8 classes. The phytoplankton standing crops were recorded a maximum of 33,389 cells ·ml–1
at the st. 7 in June and a minimum of 139 cells ·ml–1 at the st. 1 in September. The correlations between averages of
the phytoplankton standing crops and some of environmental factors were investigated at each sampling station.
The coefficients of correlation between average of the phytoplankton standing crops and BOD, T-N and T-P were
0.61, 0.45 and 0.47, respectively. In general the dominant species were Achnanthes minutissima Kütz, Nitzschia fonticola
Grun., Navicula cryptotenella Lange-B in the upper reaches, Microcystis aeruginosa (Kütz.) Kütz. and Stephanodiscus
hantzschii Grun. in the lower reaches.

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