금호강의 상·하류간 이·화학적 수질구배 및 이에 따른 어류 길드영향 = Physico-chemical Water Quality Gradients Along the Main Axis of the Headwater-to-Downstream of Geumho River and Their Influences on Fish Guilds

다국어 초록 (Multilingual Abstract)

The object of this study was to analyze long-term water quality gradients during 1992-2008 at six sites of Geumho River and near-by two sites of Nakdong River and their influences on fish trophic guilds and tolerance guilds along with ecological health. Water quality including biological oxygen demand (BOD), chemical oxygen demand (COD), conductivity, total phosphorus (TP), total nitrogen (TN), and total suspended solids (TSS) varied largely depending on the sampling locations and seasons. Values of ambient BOD, COD, TP, and TN were greater in the downstream than in the upstream reach, and seasonal and interannual variabilities were also higher in the downstreams. This phenomenon was evident due to a dilution by the Asian monsoon rainfall during the monsoon. These outcomes indicate that point sources near the downstream are important for the chemical conditions, but also seasonal stream runoff was considered as an important factor regulating the chemical conditions. Conductivity decreased rapidly during the summer due to ionic dilution, and nutrients (N, P), BOD, COD had an inverse function of seasonal precipitation. Based on the water quality, we selected two sites (control site = Cs vs. impacted site = Is) for impact analysis of water chemistry on fish community and trophic/tolerant guilds. Fish guild analysis showed that species diversity was higher in the headwater stream (Cs) than the impacted downstream (Is), and that the proportion of tolerant and omnivore species were greater in the impacted site of downstream. Comparisons of water quality between Geumho River and Nakdong River indicated that Geumho River was considered as a point source which degradated water quality to the Nakdong River. Overall, chemical water quality and fish guild analysis suggest that even if current chemical quality got better after 1996 due to continuous constructions of wastewater disposal plants near the downstreams, fish compositions of tolerant and omnivores were still dominated the community. Thus, biological restoration based on ecological health is required for the ecosystem conservation.

참고문헌 (Reference)

1 김익수, "한국의 민물고기" 교학사 29-428, 2002

2 정문기, "한국어도보" 일지사 1-727, 1977

3 김익수, "한국동식물도감 제37권 동물편(담수어류)" 교육부 133-520, 1997

4 김종원, "하천유역별 통합 물관리체계 연구" 국토연구원 33-54, 2000

5 윤일병, "저서성 대형무척추동물에 의한 금호강 수계의 생물학적 수질평가" 25 (25): 177-183, 1992

6 박성배, "장마기의 강우가 낙동강 하류(물금) 수질에 미치는 영향" 한국하천호수학회 35 (35): 160-171, 2002

7 환경청, "자연생태계 전국조사 1987-제2차년도-(I): 담수어류/수서곤충" 450-, 1987

8 안광국, "우리나라 주요하천 수계에서 다변수모델을 이용한 생태학적 수환경 평가" 한국물환경학회 22 (22): 796-804, 2006

9 권재섭, "영천댐 방류수량이 금호강 수질에 미치는 영향" 2 : 38-42, 1999

10 강선아, "영산강 수계의 이화학적 수질에 관한 시공간적 변이 분석" 한국하천호수학회 39 (39): 73-84, 2006

11 염동혁, "어류군집을 이용한 금호강의 생물보전지수" 18 (18): 215-226, 2000

12 최기철, "쉽게 찾는 내 고향 민물고기" 현암사 24-287, 2001

13 박재홍, "수질환경척도" 한국물환경학회 21 (21): 109-117, 2005

14 환경부, "수생태 건강성 회복을 위한 하천복원 모델과 기준, 조사계획 수립 연구 최종보고서(III): 수생태 건강성 조사계획 수립 및 지침" 37-46, 2007

15 배대열, "생물학적 다변수 모델 적용 및 수화학 분석에 의거한 갑천생태계 평가" 한국하천호수학회 39 (39): 198-208, 2006

16 안광국, "생물보전지수(Index of Biological Integrity)및 서식지 평가지수 (Qualitative Habitat Evaluation Index)를 이용한 평창강의 수환경 평가" 한국하천호수학회 34 (34): 153-165, 2001

17 류태호, "보청천의 수질 및 어류를 이용한 생태학적 건강도 분석" 한국하천호수학회 43 (43): 255-262, 2010

18 환경부, "물환경종합평가기법 개발 조사연구(II), 최종보고서" 91-162, 2005

19 환경부, "물환경종합평가기법 개발 조사연구(I), 최종보고서" 223-344, 2004

20 안광국, "대형 인공호에서 양이온, 음이온 및 전기전도도의 연변화에 대한 수리수문학적 중요성" 한국하천호수학회 34 (34): 1-8, 2001

21 배대열, "대청호에서 종적구배에 따른 영양염류 및 엽록소의 역동성" 한국하천호수학회 40 (40): 285-293, 2007

22 임영성, "낙동강 수계의 수질 현황" 18 (18): 126-134, 1999

23 장민호, "낙동강 본류의 어류상" 한국하천호수학회 34 (34): 223-238, 2001

24 박경훈, "금호강 유역의 환경특성이 하천수질에 미치는 영향" 한국지리정보학회 6 (6): 85-98, 2003

25 황병기, "금호강 유역의 오염총량 관리 대책 수립" 한국환경과학회 11 (11): 1125-1131, 2002

26 이정재, "금호강 유역의 수질, 토양 및 작물체중의 중금속(Zn, Cu, Cd, Pb) 함량조사" 5 (5): 24-29, 1986

27 박경훈, "금호강 유역관리를 위한 수변구역의 토지이용패턴분석" 한국지리정보학회 8 (8): 157-165, 2005

28 배준웅, "금호강 오염의 종합적 조사" 한국분석과학회 15 (15): 9-66, 2002

29 이태관, "금호강 수질환경의 계절적 변동과 관리" 1 (1): 155-170, 1996

30 배준웅, "금호강 수질의 장기 변동에 관한 연구" 4 (4): 207-220, 1995

31 남광현, "금호강 수질오염 현황 및 조사방법 개선연구" 대구경북개발 연구원 21-62, 2003

32 배준웅, "금호강 수중의 영양염류의 장기변동" 3 (3): 101-108, 2000

33 채병수, "금호강 수계의 어류상" 24 (24): 299-299, 1991

34 권영수, "금호강 수계에서 생물학적 하천 건강도 및 이화학적 특성" 한국하천호수학회 39 (39): 145-156, 2006

35 한정호, "금강 수계의 시∙공간적 수질특성과 토지이용도의 영향" 한국하천호수학회 43 (43): 385-399, 2010

36 오강호, "광주광역시 하천수의 수질 및 오염" 한국환경과학회 12 (12): 287-297, 2003

37 김세원, "강우시 시화호 농촌 및 공단유역의 비점오염물질 유출특성" 한국물환경학회 25 (25): 768-777, 2009

38 U. S. EPA, "Technical Support Document for Water Quality-based Toxic Control" U.S. EPA, Office of Water 29-45, 1991

39 U. S. EPA, "Summary of Biological Assessment Programs and Biocriteria Development for States, Tribes, Territories, and Interstate Commissions: Streams and Wadable River" U.S. EPA 1-404, 2002

40 An, K-G., "Response of Lake Water Quality to Nutrient Inputs from Various Streams and In-lake Fishfarms" 149 (149): 27-49, 2003

41 Barbour, M. T., "Rapid Bioassessment Protocols for Use in Streams and Wadeable Rivers: Periphyton, Benthic Macroinvertebrates and Fish, second edition" US. Environmental Protection Agency, Office of Water 162-180, 1999

42 U. S. EPA, "Fish Field and Laboratory Methods for Evaluating the Biological Integrity of Surface Waters" Environmental Monitoring Systems Laboratory-Cincinnati Office of Modeling, Monitoring Systems, and Quality Assurance, Office of Research Development 128-198, 1993

43 Karr, J. R., "Designing Surveys to Assess Biological Integrity in Lakes and Reservoirs, in Biological Criteria: Research and Regulation-Proceedings of a Symposium" Office of Waters 62-72, 1991

44 Ohio EPA, "Biological Criteria for the Protection of Aquatic Life (Vol. II): Users Manual of Biological Field Assessment of Ohio Surface Waters" Division of Water Quality Monitoring and Assessment, Surface Water Section 22-87, 1987

45 Ohio EPA, "Biological Criteria for the Protection of Aquatic Life (Vol III): Standardized Biological Field Sampling and Laboratory Method for Assessing Fish and Macroinvertebrate Communities" Division of Water Quality Monitoring and Assessment V-4-18-V-4-31, 1989

46 Karr, J. R., "Assessment of Biotic Integrity Using Fish Communities" 6 : 21-27, 1981

47 Karr, J. R., "Assessing Biological Integrity in Running Water: A Method and Its Rationale" Illinois National History Survey 28-, 1986