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손세환 ( Se Hwan Son ),김진영 ( Jin Young Kim ),조재익 ( Jae Ick Jo ),공동수 ( Dong Soo Kong ) 한국물환경학회 2011 한국물환경학회지 Vol.27 No.5
This study was performed to find out the distribution aspect of benthic macroinvertebrates according to altitude in a mountain stream (a main stream: Buk stream, a tributary: Hangye stream) of Seoraksan. The survey was conducted from August to November in 2010. All survey sites were very sound because the mountain was being maintained as a protection area of the national park. Water quality and the composition of substrata were similar in all sites. Benthic macroinvertebrates of 3 phyla, 4 classes, 9 orders and 84 species occurred in the stream. Along with the decline of altitude, shredders of the functional feeding groups (FFGs) decreased, while collector filterers increased. In particular, collector filterers increased sharply at the altitude of 600~500 m (S.E.L.). Benthic macroinvertebrates showed low similarity between the uppermost site and the lower sites. Altitude appeared to be a significant factor that influence the structure and distribution of benthic macroinvertebrate community.
공동수,손세환,김진영,김아름,권용주,김정우,김예지,민정기,김필재,Kong, Dongsoo,Son, Se-Hwan,Kim, Jin-Young,Kim, Ah Reum,Kwon, Yongju,Kim, Jungwoo,Kim, Ye Ji,Min, Jeong Ki,Kim, Piljae 한국물환경학회 2017 한국물환경학회지 Vol.33 No.5
Physical environmental factors (water depth, current velocity and substrate) and fish community were surveyed in the Gapyeong stream, Korea. The fish group of Gapyeong Stream was divided into three types. Lithophilic fish, Koreocobitis rotundicaudata and Pseudopungtungia tenuicorpa preferred shallow depth, low-velocity current, and coarse bed condition, whereas Coreoleuciscus splendidus and Microphysogobio longidorsalis were adapted to high-velocity current and bed materials. Nektonic fish, Zacco koreanus and Zacco platypus appeared in a wide range of physical conditions. Intermediate fish, Hemibarbus longirostris, Pungtungia herzi and Coreoperca herzi adapted to moderate water depths and current velocities. Among them, H. longirostris and C. herzi were adapt to various bed materials. C. splendidus, M. longidorsalis and P. herzi showed high niche overlap for current velocity, water depth and substrate with Z. koreanus and Z. platypus. The occurrence of M. longidorsalis in a relatively low-velocity current compared to Z. koreanus and Z. platypus suggests that the current velocity act as a isolation factor for these species. The competition, isolation and character displacement among these species investigated detail in the future. Based on canonical correspondence analysis, the relative importance of each environmental factor was determined as substrate > water depth > current velocity.
인공메소코즘에서 동물플랑크톤의 섭식압에 대한 어류의 영향
임지혁 ( Ji Hyeok Im ),손세환 ( Se Hwan Son ),김진영 ( Jin Young Kim ),오민우 ( Min Woo Oh ),남귀숙 ( Gui Sook Nam ),송영희 ( Young Hee Song ),이옥민 ( Ok Min Lee ),공동수 ( Dong Soo Kong ) 한국물환경학회 2011 한국물환경학회지 Vol.27 No.6
In a natural water body, a useful ecotechnology to reduce standing crops of phytoplankton is to strengthen the top-down force of zooplankton. However, the predation of fish for zooplankton can make the force weak. This study was conducted to find out the effect of fish on the grazing pressure of zooplankton in the mesocosms established in a eutrophic stream (Kyongan Stream) from October to November in 2010. In the corral with fish, chlorophyll a concentration increased, and a small size cladoceran Bosmina longirostris was dominant. In the corral without fish, chlorophyll a concentration decreased along with the domination of a large cladoceran Daphnia galeata and a large copepod Eudiaptomus japonicus. The size-selective predation of fish appeared to miniaturize the zooplankton community, to narrow their food-size spectrum, and to weaken the top-down force.
부영양 수체(경안천)내 메소코즘에서의 생물관리를 통한 조류 제어 효과
임지혁 ( Ji Hyeok Im ),손세환 ( Se Hwan Son ),김진영 ( Jin Young Kim ),오민우 ( Min Woo Oh ),조재익 ( Jae Ick Jo ),송미애 ( Mi Ae Song ),남귀숙 ( Gui Sook Nam ),송영희 ( Young Hee Song ),장광현 ( Kwang Hyeon Chang ),이옥민 ( Ok Mi 한국물환경학회 ( 구 한국수질보전학회 ) 2012 한국물환경학회·대한상하수도학회 공동 춘계학술발표회 Vol.2012 No.-
하천환경의 생물학적 평가를 위한 저서동물지수(BMI)의 개발
공동수 ( Dongsoo Kong ),손세환 ( Se-Hwan Son ),황순진 ( Soon-Jin Hwang ),원두희 ( Doo Hee Won ),김명철 ( Myoung Chul Kim ),박정호 ( Jung Ho Park ),전태수 ( Te Su Jeon ),이종은 ( Jong Eun Lee ),김종현 ( Jong Hyun Kim ),김종선 ( Jon 한국물환경학회 2018 한국물환경학회지 Vol.34 No.2
The tolerance of Korean benthic macroinvertebrates to organic pollution has been analyzed since the early 1990s. However, considering the fact that there have been related studies carried out in some European countries since the early 20th century, the history of the research in Korea is very short and there is still much knowledge to supplement. We revised the saprobic valency, the saprobic value and the indicator weight value of 190 benthic macroinvertebrates taxa through the data of water quality and individual abundance collected from 7,086 sampling units in Korea from 2008 to 2014. The individual abundance of Uracanthella (Ephemeroptera) as a representative, one of the most common and abundant taxa in Korea, showed a typical lognormal distribution to 5-day biochemical oxygen demand (BOD<sub>5</sub>) concentration, and a normal distribution to the class interval of BOD<sub>5</sub> concentration according to saprobic series. The value combining the mean individual abundance and the relative frequency of occurrence was a more efficient indicator value than that of each property alone. Benthic Macroinertebrates Index (BMI) was newly proposed as a modification of the saprobic index of Zelinka and Marvan (1961). BMI showed extremely significant correlation (determination coefficient r<sup>2</sup> > 0.6, n = 569 sites) with the concentration of BOD<sub>5</sub>, and the coefficient was a little higher than those of the previous indices. Until now, there has been very little research on the assessment of biological integrity of benthic macroinvertebrates community in Korea. While continuing researches into improve the reliability of BMI, it is necessary to develop multimetric indices for evaluating the integrity, including the composition of species and functional guilds, and the richness and diversity of the community.
기후변화의 생물학적 평가를 위한 한국온수생물지수(KTI)의 개발 및 적용
공동수 ( Dongsoo Kong ),김진영 ( Jin Young Kim ),손세환 ( Se Hwan Son ),오민우 ( Min Woo Oh ),최아름 ( Ah Reum Choi ),변명섭 ( Myeong Seop Byeon ) 한국물환경학회 2013 한국물환경학회지 Vol.29 No.1
The purpose of this study was to develop a Korean thermality index based on the distribution patterns of benthic macroinvertebrates according to altitude and latitude. Analyzing seasonal data (4,583 sampling units) surveyed and collected during 2007~2011 at 846 sites in South Korea we estimated thermal valency thermal value and indicator weight value of 208 species. Among them 40 species in 6 orders (Decapoda 1 species Collembola I species Ephemeroptera 5 species Plecoptera 17 species Diptera 3 species Trichoptera 13 species) were selected as the candidate indicator species sensitive and vulnerable to warmth along with climate change. KTI and Benthic macroinvertebrate index were tested at three clean streams (Hangye stream Buk stream and Bangtae stream). KTI showed significant differences according to altitude and water temperature whereas the saprobity index BMI showed little differences. This result means that KTI can be applicable to assess the impact of water temperature independently of organic of pollutants.