Hwapocheon stream is located in Gimhae-si, Gyeongsangnam-do, and a part was declared a protected wetland area in 2017. In 2020 and 2021, we investigated the community structure of benthic macroinvertebrates of the Hwapocheon stream to provide ecological information for the management of the wetland. As a result, 4 phyla, 6 classes, 20 orders, 51 families, 83 species, and 2,621 individuals of benthic macroinvertebrates were identified. The average indices of diversity, richness, and evenness were the highest in the midstream area, whereas the highest average index of dominance was observed upstream. Seven biological water quality evaluations based on the distribution of benthic macroinvertebrates showed that the Biological Monitoring Working Party was an extremely suitable method for environmental evaluation of the Hwapocheon stream. Regarding functional feeding groups, the number of species of predators and gathering-collectors was the highest, and considering habitual dwelling groups, the number of species of clingers and sprawlers was the highest. The species number of Odonata, Hemiptera, and Coleoptera increased toward the downstream area, whereas the community loss index was the highest upstream. We also investigated relative resistance and resilience based on the distribution of aquatic insects and found that community stability was the highest downstream, whereas the lowest upstream.

Abstract
1. 서 론
2. 재료 및 방법
    2.1. 조사지점 및 조사기간
    2.2. 채집 및 분류
    2.3. 생물지수
    2.4. 생물학적 환경평가와 군집손실지수
    2.5. 기능군과 군집 안정성
3. 결과 및 고찰
    3.1. 저서성 대형무척추동물 서식 현황
    3.2. 우점종과 생물지수
    3.3. 생물학적 환경평가
    3.4. 기능군의 유형분석
    3.5. 환경특성지표군 및 환경변화상
    3.6. 군집 안정성
4. 결 론
REFERENCES

• 배성우(창원대학교 생물학 화학융합학부) | Seong-Woo Bae (Department of Biology & Chemistry, Changwon National University, Changwon 51140, Korea)
• 황태원(창원대학교 생물학 화학융합학부) | Tae-Won Hwang (Department of Biology & Chemistry, Changwon National University, Changwon 51140, Korea)
• 윤춘식(창원대학교 생물학 화학융합학부) | Chun-Sik Yoon (Department of Biology & Chemistry, Changwon National University, Changwon 51140, Korea)
• 홍성진(낙동강유역환경청) | Sung-Jin Hong (Nakdong River Basin Environmental Office, Changwon 51439, Korea)
• 정선우(창원대학교 생물학 화학융합학부) | Seon-Woo Cheong (Department of Biology & Chemistry, Changwon National University, Changwon 51140, Korea) Corresponding author