• Animal Systematics, Evolution and Diversity
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• v.7 no.2
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• pp.241-256
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• 1991

The systematic study of freshwater rotifers was conducted on the materials collected from 197 sites in South Korea. As a result, 9 species of Family Colurellidae were identified, 4 species ( 1 species and 3 subspeices) of which are new to the Korea fauna ; Courella uncinata uncinata, Squatinella rostrum rostrum, Lepadella patella patella, and L.elliptica. Total 165 species representing 13 families and 40 genera are now recorded by addign the species described in the present paper.

• Proceedings of the Korean Aquaculture Society Conference
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• 2001.12a
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• pp.246-247
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• 2001

• Animal Systematics, Evolution and Diversity
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• v.8 no.2
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• pp.211-222
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• 1992

The systematic study of freshwater rotifers was conducted with the materials collected from 205 sites in South Korea. As a result, 4 subspecies, 3 from of Family Brachionidae (Keratella, Notholca) was identified; of which, 1 from is new to the Korean fauna: Keratella quadrata f. testudo. Total 135 species, 15 subspecies, 9 varieties and 10 forms representing 14 families 40 genera are now recorded from Korea by adding the 1 from newly described in the present paper.

• Animal Systematics, Evolution and Diversity
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• v.5 no.2
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• pp.257-268
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• 1989

Hada(1936) reported thelist of 14 species of Korean freshwater Rotifer for the first time. Since his report, there have been no taxonomic studies on the Korean except some sporadical reports which contained lists of species as a partial result of limnological study. The author made a list of 145 species of Korean freshwater Rotifera reported until 1988 with reference as convenient compendium for further taxonomic research.

• Animal Systematics, Evolution and Diversity
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• v.8 no.1
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• pp.35-56
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• 1992

The systematic studyof freshwater rotifers was conducted on the materials collected from 205 sites in South Korea. As a result, 1 species, 9 subspecies, 2 varieties and 6 forms of two genera. Brachionus and platyas in Family Brachionidae were identified, of Which , 1 subspecies and 4 forms are new to the Korean fauna: Brachionus urceolaris bennini , B. angularis f. bidens , B. quadridentatus, f. rhenanus, B. forficula f. minor, and B. forficula f. angularis. Total 134 speices, 15 subspecies, 9 varieties and 9 forms representing 14 families 40 genera are now recorded from Korea by adding the 1 subspecies and 4 forms newly described in the present paper.

• Animal Systematics, Evolution and Diversity
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• v.5 no.2
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• pp.139-157
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• 1989

The rotifers inhabiting several lowland swamps in Kyngsangnam-do were taxonomically investigated. Collectings were carried out four times at 10 sites in such lowland swamps as Up, Chunam-ji , Chilnal-np and Oisong-np from 22 February 1988 to 2 October 1988. As a result, 4 spcies, 9 subspecies, 2 varieties and 2 forms of monogonont rotifiers in 5 families were identified, of which following 3 species and 3 subspecies are new to Korea ; Testudinella mucronata hauerensis, Platyias quadricornis , Mytilina acanthophora, Lecane ungulata ungulata. Trichocerca bicristata bicristata, and Dicranophorus epicharis.

• The Korean Journal of Zoology
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• v.34 no.4
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• pp.548-556
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• 1991

The rosters collected loom various keshwater habitats, such as rivers, steams, lakes, ponds, and rice paddies at twenty-four different sites in Korea were investigated. Eleven species and/or subspecies in three families of monogonont freshwater rotifers were identified, of which two species, Notholco marina and Lecane (Monostyra) stenroosi stenroosi were new to Korea. A key is presented for the twenty-two Korean species and/or subspecies which have been described by the previous taxonomic reports and the present study.

• Journal of Korean Society on Water Environment
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• v.26 no.5
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• pp.850-859
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• 2010

Structure and succession of zooplankton community studied by hydraulic and ecological characteristics targeting the five lakes in the Han river system from March to December 2008. Results separated by river-type lake and lake-type lake depending on the type of hydraulic, Paldang lake and Cheongpyeong lake were river-type lake, while Chungju lake, Hoengseong lake and Doam lake was lake-type lake. The Paldang lake was a eutrophic lake, zooplankton community density and species number were the most among the five lakes. Relative dominance of the rotifera was the largest and the yearly first dominant species was a small cladocera Bosmina longirostris. The Cheongpyeong lake was a mesotrophic-eutrophic lake, hydraulic characteristics and zooplankton community changes were similar the Paldang lake. Relative dominance of the cladocera was the largest and the yearly first dominant species was a small cladocera Bosmina longirostris. The Chungju lake was a oligotrophic-mesotrophic lake, zooplankton community density was the least among the five lakes. Relative dominance of the copepoda was the largest and the yearly first dominant species was a large cladocera Daphnia galeata. The Hoengseong lake was a oligotrophic-mesotrophic lake, relative dominance of the rotifera was the largest and the yearly first dominant species was a small cladocera Bosmina longirostris. The Doam lake was a mesotrophic-eutrophic lake, zooplankton community density showed dramatic difference at the investigation time. Relative dominance of the rotifera was the largest and the yearly first dominant species was the copepoda Nauplius.

• Korean Journal of Ecology and Environment
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• v.45 no.3
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• pp.278-288
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• 2012

The zooplankton community of Lake Paldang, Korea, was investigated on a weekly basis from 2004 to 2006. The seasonal succession of zooplankton community structure was influenced by hydrological factors such as rainfall pattern and efflux in Lake Paldang. According to the monsoon climate, spring, fall and winter had reduced precipitation, so that zooplankton dynamics of the lake showed a typical succession pattern. In spring, small sized and faster growing rotifera rapidly increased, and copepods and cladocera noticeably increased thereafter. Rotifera dominated the zooplankton community, occupying more than 90% of total zooplankton abundance. Among rotifera, Keratella cochlearis was extremely dominant in spring. Copepoda were mainly present as Copepodid and Nauplius. Among cladoceran species, Bosmina longirostris was dominant. In summer, during the rainy season, zooplankton were flushed out by an associated dam. After the rainy season, rotifera increased rapidly when the water column of the lake was stable. During the fall, zooplankton abundance gradually reduced in accordance with decreasing water temperature. However, the occupation rate of copepod (Copepodid, Nauplius) increased relatively. Zooplankton dynamics were influenced by meteorological changes and hydraulic-hydrological factors, because Lake Paldang is a completely closed ecosystem.

• Korean Journal of Ecology and Environment
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• v.33 no.2 s.90
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• pp.162-175
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• 2000

The present study was carried out to clarify the distribution of rotifera with salinity variation during the period from February 1998 to July 1999. Rotifera consists of 27 genera and 88 species, from the maximum occurrence of 39 species in November, 1998 to the minimum of 21 species March, 1998. With 32 dominant species, Keratella cochlearis cochlearis, K. cochlearis f. tecta, Ascomorpha saltans saltans and Asplanchna (s. str.) priodonta priodonta occurred predominantly. Distribution of Rotifera related to salinity showed that 36 species occurred in the freshwater zone, 3 species in the mixo-oligohaline zone ($0.5{\sim}5.0%_o$) and mixo-mesohaline zone ($5.1{\sim}28.0%_o$) respectively, on the other hand 2 species (Asplanhna (s. str.) priodonta priodonta, Synchaeta oblonga) in all zones. Average abundance by salinity ranged from $1,273\;ind./m^3$ ($25.0{\sim}28.0%_o$ to $16,259\;ind./m^3$ ($15.1{\sim}20.0%_o$. The percentage composition calculated effect by stepwise multiple regression of the pearson correlation coefficient value of environmental factors and Rotifera abundance (station $1{\sim}4$) revealed that it was 74.32% in BOD, 72.15% in COD, 69.77% in conductivity, 65.87% in $Cl^-$ and 58.27% in chlorophyll a. Also, (Station $5{\sim}12$) revealed 9.11% in $Cl^-$, 7.67% in TP and 6.20% in chlorophyll a.