자연적인 기온과 강수량 증가로 인한 저서성 대형무척추동물 군집 구성의 변화

서지정보

ㆍ발행기관 : 한국하천호수학회 ㆍ수록지정보 : 생태와 환경 / 50권 / 3호
ㆍ저자명 : 홍 철, 김원석, 곽인실

목차

Abstract
서 론
재료 및 방 법
1. 연구 조사지와 조사 시기
2. 이화학적 자료
3. 현장 조사
4. 생물지수의 산출
5. 통계분석
결과 및 고 찰
1. 지리적인 위치에 따른 지역별 기온과 강수량의 분포
2. 서식처 환경요인의 변화
3. 군집 구성과 생물지수의 분포
4. 생물지수와 환경요인과의 상관성 분석
5. 지리적인 위치에 따른 유사성 파악
적 요
References

영어 초록

To investigate the changes of dominant species of benthic macroinvertebrates according to the changes of temperature and precipitation, we surveyed twenty sites of the main Seomjin River in May and September in 2013 and 2014. The temperature, precipitation, water quality factors and substrate composition, which are important factors in benthos habitat environment, were collected and measured. The average temperature of the Seomjin River increased by 0.2℃ in 2014 compared to 2013, and the temperature increased from upstream to downstream, showing a difference of more than 3℃. Also, the annual cumulative precipitation (ACP) was increased toward low latitude. The temperature of Seomjin River increased more than twice in September (21.7~24.5℃) after rainfall compared to May (7.6~11.3℃) before rainfall, and CP (cumulative precipitation) increased about 3 times before rainfall (263 mm~287.5 mm) and after rainfall (756.3 mm~882 mm). Due to washing effect by summer precipitation, total number of species and individuals for benthic macroinvertebrates were higher in May than in September. Chironomidae sp. and Choroterpes altioculus were dominated in May, Ecdyonurus levis, Macrostemum radiatum and Choroterpes altioculus were dominated in September. As a result of correlation analysis between community indices and environment factors, it was found that there is a high correlation with boulder and sand among substrate compositions. According to the results of cluster analysis based on temperature, CP and the dominant species of benthic macroinvertebrates in Seomjin River, it was divided into two groups following temperature and CP, and the dominant species and geographical position were reflected and divided into detailed groups.

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