TWINSPAN 기법을 이용한 한국의 저서성 대형무척추동물의 유형분류 및 유형분포에 영향을 미치는 환경요인에 대한 판별분석

• Published in: 한국물환경학회지 Vol. 34; no. 6; pp. 602 - 620
• Main Authors: 민정기, 김동희, 문정숙, 김진영, 공동수, Min, Jeong-Ki, Kim, Dong-Hee, Moon, Jeong-Suk, Kim, Jin-Young, Kong, Dongsoo
• Format: Journal Article
• Language: Korean
• Published: 한국물환경학회 30.11.2018
• Subjects: 환경공학; Discriminant analysis; Environmental factors; Benthic macroinvertebrates; TWINSPAN; Benthic macroinvertebrate types
• ISSN: 2289-0971; 2289-098X
• DOI: 10.15681/KSWE.2018.34.6.602

Korean benthic macroinvertebrate community from 959 sites and 14 environmental factors that could affect the biological distribution were surveyed and analyzed. The 438 taxa were divided into six groups according to TWINSPAN. Based on the environmental factor values corresponding to each taxon, the average and range of environmental factors for each biological group tended to increase or decrease in eight environmental factors (altitude, slope, current velocity, fraction of fine particles in substrates, turbidity, $BOD_5$, T-N and T-P). As a result of discriminant analysis (hit ratio: 69.6 %), environmental factors that significantly influence the distribution of each biological group were $BOD_5$, altitude, catchment area, T-N, T-P and fraction of fine particles in substrates. The discriminant functions 1 and 2 classified the existing six biological groups (clustered by TWINSPAN) into five (group 1: highland highly sensitive group; group 2: lowland sensitive group, group; 3 and 4: lowland slightly tolerant group; group 5: lowland tolerant group; group 6: lowland highly tolerant group). Most of the benthic macroinvertebrates were identified in the species level. However, a few others were identified in genus or family level, too. Even the organisms belonging to the same genus or family may prefer different environmental factors in the species level, the identification of characteristic of the habitat environment preferred by organism and species level identification of these organisms are utmost. The results of this study may be used as basic information on environmental factors which can be considered in preservation and restoration research for biodiversity.