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임병진,김범철,유광일,유재근 ( Byung Jin Lim,Bom Chul Kim,Kwang Il Yoo,Jae Keun Ryu ) 한국하천호수학회 1997 생태와 환경 Vol.30 No.4
Changes of zooplankton community was observed at six stations during the period from June to October 1994 in Nakdong River. 40 species of zooplankton were identified; 11 genera and 14 species of cladocerans, 7 genera and 9 species including one unidentified species of copepods, and 9 genera and 17 species of rotifers. The dominant species of Zooplankton were Asplanchna priodonta, Brachionus angularis, Moina macrocopa. Copepod copepodids and nauplii were always dominant. The highest densities of rotifer were always observed at all stations. The seasonal fluctuation of abundance of zooplankton varied from 1,510 indiv. /m^3 to 1,024,093 indiv. /m^3 by months and stations. From June to October, chlorophyll-a ranged from 1.7 mg/m^3 to 173.6 mg/m^3. There was a prominent rise in phytoplankton biomass for the most stations from July to September.