This study investigated long-term changes in benthic macroinvertebrate communities and the impact of water quality factors following the restoration of Cheonggyecheon Stream, a representative case of urban stream restoration in Seoul, Korea. Monitoring data collected from 2006 to 2024 were analyzed to evaluate relationships among species richness, abundance, community indices, functional group composition, and water quality variables. The results indicated that species richness and abundance experienced a temporary decline following the initial restoration phase, but increased once again by 2024, demonstrating a nonlinear recovery pattern throughout the urban stream restoration process. Community analyses revealed a decrease in dominance alongside an increase in diversity and evenness, suggesting that community structure gradually stabilized over time after restoration. The proportions of Ephemeroptera and Trichoptera increased, highlighting the recovery potential of pollution-sensitive taxa associated with improvements in water quality. Concurrently, the prevalence of gathering collectors and clingers reflected the influence of organic matter accumulation and artificial substrate structures. nMDS and PERMANOVA results demonstrated statistically significant differences in community structure across years, providing evidence of progressive stabilization. GLMM results indicated a significant increase in species richness during the late restoration phase compared to the early phase, illustrating a clear recovery pattern. Additionally, suspended solids exhibited a negative relationship with species richness. These findings suggest that long-term community dynamics following urban stream restoration are primarily influenced by streambed stabilization and alterations in suspended solids, thereby providing essential baseline information for biodiversity conservation and habitat enhancement in Cheonggyecheon Stream.

Abstract
1. 서 론
2. 재료 및 방법
    2.1. 조사시기 및 조사지점
    2.2. 저서성 대형무척추동물 채집 및 동정
    2.3. 환경요인
    2.4. 군집 분석 및 EPT 분류군
    2.5. 기능군 분석
    2.6. nMDS 분석
    2.7. GLMM 분석
3. 결과 및 고찰
    3.1. 저서성 대형무척추동물 군집 특성
    3.2. 저서성 대형무척추동물 기능군 분석
    3.3. 군집 구조 분석 (nMDS)
    3.4. 일반화 선형복합모형 (GLMM)
적 요
CRediT authorship contribution statement
Declaration of Competing Interest
REFERENCES

• 안채희(국립생태원 멸 종위기종복원센터) | Chae Hui An (Research Center for Endangered Species, National Institute of Ecology, Yeongyang 36531, Republic of Korea)
• 이경연(국립생태원 멸 종위기종복원센터) | Gyeong Yeon Lee (Research Center for Endangered Species, National Institute of Ecology, Yeongyang 36531, Republic of Korea)
• 한중수(국립생태원 멸 종위기종복원센터) | Jung Soo Han (Research Center for Endangered Species, National Institute of Ecology, Yeongyang 36531, Republic of Korea) Corresponding author
• 김나영(고창식품산업연구원) | Na Yeong Kim (GFI Gochang Future Policy Institute, Gochang Food & Industry Institute, Gochang 56417, Republic of Korea)
• 이황구(상지대학교 스 마트팜생명과학과) | Hwang Goo Lee (Department of Smart Farm Life Science, College of Life Science & Engineering, Sangji University, Wonju 26339, Republic of Korea) Corresponding author