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- 저자 : 배경석 ( Yeon Jae Bae (검색결과 4 건)
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배경석(Kyung Seok Bae),서미연(Mi Yeon Seo),신진호(Jin Ho Shin),길혜경(Hae Kyung Gil),신재영(Jae Young Shin) 한국환경보건학회 1999 한국환경보건학회지 Vol.25 No.4
The present study was performed to analyze community structure of aquatic animals and to estimate biological water pollution levels in Yangjae stream from April to December, 1997. The aquatic animals were composed of 49 species, 12 orders, 7 classes in 4 phyla. The seasonal species of whole area showed big fluctuation between 18 species in Spring, 30 species in Summer, 35 species in Autumn and 15 species in Winter. The regional species of the survey period showed 35 species at Umyeon bridge, 24 species at Youngdong 1 bridge, 21 species at Youngdong 4 bridge and 25 species at Taech´i bridge site. The major dominant species of benthic macroinvertebtates were chironomidae sp.1, chironomidae sp.2, chironomidae sp.5 in diptera, Limnodrilus sp.1, Limnodrilus sp.2 in oligochaeta, Physa acuta in mollusca and Ischnura asiatica in odonata. Seasonal dominance indices of benthic macroinvertebrates ranged from 0.42 to 0.96 at each site, while seasonal extended biotic indices(EBI) of benthic macroinvertebrates ranged from 2 to 5 at each site. According to the saprobic system based on the seasonal species diversity indices of benthic macroinvertebtates at each site, Biological water quality condition of Yangjae stream was severely fluctuated between polysaprobic area and oligosaprobic area. According to the estimation of water pollution levels by average specie diversity indices of benthic macroinvertebrates, all study sites are determined α-mesosaprobic area(Youngdong 4 bridge) and β-mesosaprobic area(Umyeon bridge, Youngdong 1 bridge and Tach´i bridge). The aquatic animals in Yangjae stream has been endangered by channelization of water course and cementation of riparian. Yangjae stream ecosystem was considerably simplied by rearangement project at Kangnam-ku, Seoul in 1997. For the analysis of fluctuation of aquatic animal community by simplified ecosystem, long-term survey is needed.
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낙동강 (洛東江) 하구의 저서성 (底棲性) 대형무척추동물의 (大型無脊椎動物) 계절적 (季節的) 군집구조에 (群集構造) 관한 연구
윤일병,배경석,배연재,어성준,김기홍 ( Il Byong Yoon,Kyung Seok Bae,Yeon Jae Bae,Sung Joon Aw,Ki Hong Kim ) 한국하천호수학회 1986 생태와 환경 Vol.19 No.3·4
The benthic macroinvertebrate community structure and its seasonal fructuation in the Naktong estuary was studied during the period of August 1984 to April 1985. The benthic macroinvertebrates on each season were collected at total 12 sites over the Naktong estuary from the upper seawater reached region to the lower mouth of the estuary. The upper part of the Naktong estuary including Mulgum (St. 1) and Kup`o (St. 2) comes under the nearly freshwater region and the mouth of the estuary including Shimnidung (St. 6-1), Changjado (St.6-2), Daemadung (St. 6-3) and Chinudo (St. 6-4) comes under the seawater region. The other sites are covered brackish region. Especially Chomanp`o (St. 7), located at the branch river of Naktong estuary, comes under the real freshwater region on account of the sluice of Chugnim River. Quantitative data were investigated through the analysis of individual number (No./㎡), dominance indices (DI), species diversity indices (H`) and so on. The results are as follows: 1. The total benthic macroinvertebrate taxa collected from the Naktong estuary during Aug. 1984-Apr. 1985 composed of 61 species, 53 genera, 42 families, 19 orders, 7 classes and 3 phyla. 2. The species occurance at each site showed the most abundant at the sites of seawaters (Chinudo (St. 6-4) ) and real freshwaters (Chomanp`o (St. 7)), and decreased at the sites of brackishwaters (Kup`o (St. 2), Maekdori (St. 3-1) and Hakchang-dong (St. 3-2)). 3. The total individual number according to each season showed poorest in winter season, and increased in order of spring, summer and autumn. 4. The total individual number according to the studied sites showed more abundant at the sites of seawaters and real freshwaters than at the sites of brackishwaters. 5. The total individual number according to the main taxa showed most abundant in Crustacea, and decreased in order of Polychaeta, Gastropoda, Pelecypoda, Insecta, Oligochaeta and Hirudinea. 6. The total biomass (wet weight) showed a little seasonal, fluctuation and showed more or less abundant at the sites of seawaters. According to the main taxa the most abundant in Pelecypoda, and decreased in order of Crustacea, Polychaeta, Gastropoda, Oligochaeta and Hirudinea. 7. The dominant species are different according to the seasons and sites. Generally Neanthes japonica, Tylorrhynchus heterochaetus, Corbicula japonica, Ilyoplax pusilla, Scopimera globosa, Gammarus sp. are abundant. 8. The dominance indices (DI) showed 0.36∼1.00, and generally more or less low at the sites of seawaters and real freshwaters. 9. The species diversity indices (H`) showed 0.73∼2.55, and generally more or less high at the sites of seawaters and real freshwaters.
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배연재,박선영,윤일병,박재흥,배경석 ( Yeon Jae Bae,Sun Young Park,Il Byong Yoon,Jae Heung Park,Kyung Seok Bae ) 한국하천호수학회 1996 생태와 환경 Vol.29 No.4
Most of streams In Korea have been suffered from various anthrophogenic environmental changes such as frequent stream management projects, dredging for building materials, etc. The effects of stream bed dredging on the benthic macroinvertebrate community in a typical urban stream in Korea were studied. Study site was chosen in the mid-reach of the Wangsuk Creek (1 km section between Changhyon and Naegak) near Seoul which was completely dredged in December 1994. Reference sites were chosen at 2km upper and down stream. respectively. Quantitative and qualitative samplings, observations of habitat change, measurements of water quality and other environmental factors were conducted in January, April, August, and October 1995. As a result, benthic habitats were seriously destroyed and benthic algae, e.g., blue-greens, were bloomed since dredging. Fewer benthic macroinvertebrates occurred at the dredged area(mean species # 9.8; dominance 0.843: diversity 1.290), as compared with the upper stream (mean species # 24.3; dominance 0.448; diversity 3.266) or down stream (mean species # 17.5: dominance 0.701; diversity 2.041) ; only very tolerant species, e.g., oligochaete worms and blood worms, occurred in the dredged area. After flooding in July, water quality was somewhat improved and benthic algae were decreased; a few other benthic macroinvertebrates were introduced in Autumn. Based on the present study, we postulate that the dredging of urban streams caused sudden changes of water quality due to disturbance of benthic babitat and lack of self-purification: and subsequently introduced tolerant algae prevented from survival of other benthic macroinvertebrates, esp. hyporheos, by covering the stream bed. For the comparisons of the colonization pattern of benthic macroinvertebrates, long-term studies in preserved streams as well as in urban streams are needed.
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