논문 상세보기
The objectives of this study were to analyze the influence of chemical water quality on fish guilds, pollution tolerance and the multi-metric ecological health, based on the Fish Assessment Index (FAI) in the main stream of Mangyeong River between 2009−2016. The quality of water with specific conductivity, TP, and NH4-N got worse dramatically in the down region. During the study, a total of 50 species were collected and the most dominant species was Zacco platypus. Also known as tolerant species, accounted 22.9% of the total abundances, thus indicating a trophic degradation. The downstream region (S5) had the highest number of fish external abnormalities, indicating a degradation of ecological health, based on the fish assemblages. Pearson correlation analysis indicated that relative abundance of tolerant fish species and omnivore fish species had a significant positive correlation (r>0.30, p<0.05) with values of BOD, conductivity and NH4-N. Whereas, the relative abundance of the sensitive species and insectivore species had a significant negative relations (r<−0.30, p<0.001) with the parameters. The mean obtained from the multi-metric fish model, based on the FAI of all sites was 47 (n=40). This indicated a “fair condition” in the ecological health, and the downstream regions (S3−S5) were judged as “bad condition”, indicating an influence of the chemical degradation on the ecological health.
서 론
재료 및 방법
1. 조사시기 및 조사지점 현황
2. 화학적 수질 자료 분석
3. 어류 현장조사 방법
4. 어류 생태지표 특성 분석법
5. 어류의 다변수 모델을 이용한 생태건강도 평가
결과 및 고찰
1. 화학적 수질특성
2. 어류의 종 조성 및 분포특성
3. 어류의 오염 내성도 및 트로픽 길드 분석
4. 화학적 수질에 따른 어류분포 특성 분석
5. 어류 다변수 모델을 이용한 생태건강도 평가
적 요
사 사
REFERENCES
