This study presents a modified version of the Lake Benthic Macroinvertebrate Multimetric Index (LBMMI) originally proposed by Park et al. (2024) in Korea. Among the six core metric elements of LBMMI, two elements-total number of taxa and the proportion of predator taxa-were excluded, as they were considered to be strongly influenced by vascular hydrohytes following eutrophication. The revised LBMMI was constructed using the remaining four metrics: Pielou’s evenness index, proportion of insect taxa, individual proportion of oligochaetes and chironomids with blood tubules, and proportion of clinger taxa. Compared to the original LBMMI, the modified index showed approximately a 6% improvement in explanatory power for the first principal component (PC 1) in principal component analysis of environmental factors, and it also exhibited a broader range of discrimination. These results suggest that the modified LBMMI can be more effectively utilized for environmental assessment of lake ecosystems.

Abstract
서 론
재료 및 방 법
    1. 분석자료
    2. 통계 분석
결과 및 고 찰
    1. 주성분 분석
    2. 핵심 평가요소의 정규성
    3. 상관성 분석 및 핵심 평가요소 재선정
    4. 핵심 평가요소의 평가점수 산정
    5. 다중계량지수 산정
    6. 다중계량지수 절사 (trimming)
    7. 다중계량지수 등급치 설정
    8. 다중계량지수의 적용
결 론
적 요
REFERENCES

• 공동수(경기대학교 생명과학과) | Dongsoo Kong (Department of Life Science, Kyonggi University, Suwon 16227, Republic of Korea) Corresponding author
• 박근용(경기대학교 생명과학과) | Geun Yong Park (Department of Life Science, Kyonggi University, Suwon 16227, Republic of Korea)
• 김아름(경기대학교 생명과학과) | Ah Reum Kim (Department of Life Science, Kyonggi University, Suwon 16227, Republic of Korea)
• 김명철(SOKN생태보전연구소 주식회사) | Myoung-Chul Kim (SOKN Institute of Ecology & Conservation, Yangpyeong 12563, Republic of Korea)
• 문정숙(국립환경과학원 물환경연구부 수자원연구과) | Jeongsuk Moon (Water Resources Research Division, Water Environmental Research Department, National Institute of Environmental Research, Incheon 22689, Republic of Korea)