The distribution characteristics of functional feeding groups and biological evaluation of water quality with benthic macroinvertebrates were investigated from 2013 to 2014 in the mountain streams of Jirisan National Park. Both quantitative and qualitative collection had been performed six times during study periods in twelve sites located at upstream, midstream and downstream of four valleys, Chilsungol, Baemsagol, Daesunggol and Piagol of freshwater ecosystem in Jirisan National Park. As results, the total collected benthic macroinvertebrates were 3 phyla, 4 classes, 11 orders, 37 families, 107 species and 4,028 individuals. In 2013, 3 phyla, 4 classes, 10 orders, 32 families, 89 species and 1,829 individuals were collected. And in 2014, 3 phyla, 4 classes, 9 orders, 31 families, 80 species and 2,199 individuals were identified. The total dominant species was Ecdyonurus kibumensis, and EPT groups occupied 80.39% of total species number. Biotic indices were also compared to site and to season. The dominant index (DI) was highest at the downstream of Baemsagol in the spring of 2013, and the evenness index (J') was highest at the downstream of Daesunggol in the summer of 2013. Both diversity index (H') and richness index (RI) were highest at the upstream of Baemsagol in the summer of 2014. The correlation between altitude above sea level and functional feeding groups of benthic macroinvertebrates was also researched in this study. As a result, the species number of shredders and predators have significantly increased according to the increase of the altitude of their habitat. On the other hand, individuals of gathering collectors have increased according to the increase of altitude. The biological water quality was evaluated and compared with several methods in this study, and we suggest that ESB and GPI are more appropriate than KSI and BMI to evaluate biological water quality of mountain stream water.

Abstract
 1. 서 론
 2. 재료 및 방법
  2.1. 조사지점 및 개황
  2.2. 조사방법 및 생물분류
  2.3. 생물지수의 산출과 통계분석
  2.4. 생물학적 수질 평가
 3. 결과
  3.1. 저서성 대형무척추동물의 서식현황
  3.2. 생물지수
  3.3. 생물학적 수질평가
  3.4. 섭식기능군의 분포현황
  3.5. 섭식기능군의 고도에 따른 분포
 4. 고 찰
 5. 결 론
 감사의 글
 REFERENCES

• 방기준(국립습지센터, National Wetlands Center) | Gi-Jun Bang
• 김형곤(국립습지센터, National Wetlands Center) | Hyoung-Gon Kim
• 윤춘식(창원대학교 생물학.화학 융합학부, Department of Biology & Chemistry, Changwon National University) | Chun-Sik Yoon
• 정선우(창원대학교 생물학.화학 융합학부, Department of Biology & Chemistry, Changwon National University) | Seon-Woo Cheong Corresponding author