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海水汚染 指標種으로서의 Heminerita japonica에 關하여
崔信錫,辛昌男,吳炅煥 충남대학교 자연과학연구소 1980 學術硏究誌 Vol.7 No.2
Gastropoda communities were examined to determine the indicators as sea-water pollution in the tidal zone of Inchon and Yongyoudo. Among the factors of sea-water qualities, BOD was 22.42±8.77 ppm and showed higher values than the limiting values of pollution, 5-10 ppm in Inchon Individual number of Heminerita japonica was negatively correlated to the values of BOD.
중석광산지역의 (重石鑛山地域) 수질과 (水質) plankton 상에 관한 연구
최신석,신창남 ( Shin Sok Choi,Chang Nam Shin ) 한국하천호수학회 1976 생태와 환경 Vol.9 No.1·2
Chemical conditions and plankton fauna in the polluted and clear waters were comparatively investigated at the upper stream of the south Han-river situated in Yung-wol, Kangwon-Do during the period of August 1 and August 30, 1969. The results obtained are as follows: 1. Water temperature, pH, NH₃,-N, NO₂-N, NO₃,-N, PO₄^(---), Cl^- was found to be similar both in the polluted and clear waters. And the contents of dissolved oxygen in both waters were statistically very significant. 2. In the polluted water 11 species were appeared especially two species among them were clearly dominant: Cymbella tumida and Filinia longiseta. The frequent appearance of the two species was statistically very significant. 3. In the clear water were found various plankton ranging from 25 to 28 species, especially Gyrosigma accuminata and Ceratium hirundinella were dominant. The frequent appearance of these two species was statistically less significant. Plankton at the confluence of the waters were similar to those in the clear water. 4. Plankton fauna in the polluted and clear waters was affected by the dissolved oxygen called limiting factor which had resulted from the polluted water of tungsten mine.
Monochrysis lutheri에 對한 無機養料의 影響
崔信錫,辛昌男 충남대학교 자연과학연구소 1976 學術硏究誌 Vol.3 No.2
In this study we investigated the effect by the lack of inorganic minerals on Monochrysis lutheri, grown in the Hirano solution, from June to July 19 76. The numbers in Monochrysis lutheri appeared to delay in increase by the 5th day and get to maximum population around 15th day in Hirano solution. When nirogen, phosphorus and iron were taken up respectively from Hirano solution, the growth rate a s well as the saturation values of the individual namber abated. The differences between the numbers in control Hirano solution and those under the above mentioned conditions were of statistical significance except for the case when silicon was deficient in Hirano soution. The survey on concentration of nitrogen showed that the numbers increased significantly at more than 1.6ml, but phosphorus showed no difference due to its concentration.
崔信錫,辛昌男 충남대학교 자연과학연구소 1977 學術硏究誌 Vol.4 No.1
The investigation of young clam beds of Meretrix lusoria and Mactra veneriformis was conducted from July to August 1969, 1974 and 1975 in tidal flat area of Inchon. 1. The result of the analyses of the soil texture of young beds of Meretrix lusoria and Mactra veneriformis was as follows. Meretrix Zusoria: 1%∼2%, silt 30%∼40%, fine sand 60%∼70%, coarse sand 1.5%∼4%. Mactra veneriformis: clay 0.5%∼3%., siit 15%∼70 %, fine sand 50%∼90%, coarse sand 0.1%∼2%. 2. The habitat of young clams of Mactra veneriformis was larger than Meretrix lusoria in the area. The young clams of Meretrix lusoria set in the Lehm soil, and Mactra veneriformis the Lehm and Schuffiger soil contained a lot of sand. 3. The habitat density of young clams of Meretrix lusoria was lower than of Mactra veneriformis. This fact had statistical significance (p<0.05).
崔信錫,金泳鎬 충남대학교 자연과학연구소 1981 忠南科學硏究誌 Vol.8 No.1
The microdistribution pattern of fresh-water fishes in the Mi stream was studied from May 8 to July 18 in 1977. 1. Total 32 species were identified, including 9 species known to live at survey area. 2. The common species were Zacco temmincki, Coreoper ca herzi, Puntungia herzi, Acheilognathus signifer, Gnathopogon majinae at station 1. Gnathopogon majimae, Zacco tennincki, Z. platypus at station 2, Pungtungia herzi, Acheilognathus signifer, Coreoperca herzi, Zacco temmincki at station 3, Coreoperca herzi, Zacco temmincki, Z.platypus at stations4. 3. Acheilognathus signifer, Carassius auratus, Cobitis rotundicaudata, C. taenia were recognized to inhabit mainly in the pool. Zacco platypus, Z.temmincki, Coreoleuciscus spendidus, Mmogurnda obscura and Liobagrus mediadiposalis were recongnized to in habit mainly in the rapid. 4. The species diversity of the studied stations were comparatively high (Mean = 2.9285), and the equitability was high, too(Mean = 0.6970). The species diversity of the pool and rapid did not show the significant difference(P>0.05), and the eauitability of them did not eithed(P>0.05).
Anodonta woodiana hukudai MODELL의 生活史에 關한 硏究
崔信錫,吳炅煥,崔申洙 충남대학교 자연과학연구소 1980 學術硏究誌 Vol.7 No.1
The life cycle of fresh water bivalve, Anodonta woodiana hukudaz, was investigated at the tributary of the Dongjin River, Buan-Kun, Chunlabuk-Do from September 1978 to August 1979. 1. A woodiana hukudai was one of the summer breeders, whose breeding phenomenon was observed from February to August, 1979. The highest rate of Its breeding was observed in June. 2. Fish species infected with glochidia of A. woodiana hukudai were Oryzias latipes, Carassius carassius, Morco oxycephalus, Pseudoperilampus uyekii, and Zacco platypus. The most common species infected with glochidia was O. latipes. 3. The highest rate of infection with glochidia was observed on O. latipes from June 5 to June 20, 1979. Its infection rate was 20.4- 32.1 %. 4. Most glochidia of A. woodiana hukudai were found on the pectoral 2nd caudal fin of O.latipes. The average number of glochidia was 3.1 per fish