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하천환경의 생물학적 평가를 위한 저서동물지수(BMI)의 개발
공동수 ( Dongsoo Kong ),손세환 ( Se-Hwan Son ),황순진 ( Soon-Jin Hwang ),원두희 ( Doo Hee Won ),김명철 ( Myoung Chul Kim ),박정호 ( Jung Ho Park ),전태수 ( Te Su Jeon ),이종은 ( Jong Eun Lee ),김종현 ( Jong Hyun Kim ),김종선 ( Jon 한국물환경학회 2018 한국물환경학회지 Vol.34 No.2
The tolerance of Korean benthic macroinvertebrates to organic pollution has been analyzed since the early 1990s. However, considering the fact that there have been related studies carried out in some European countries since the early 20th century, the history of the research in Korea is very short and there is still much knowledge to supplement. We revised the saprobic valency, the saprobic value and the indicator weight value of 190 benthic macroinvertebrates taxa through the data of water quality and individual abundance collected from 7,086 sampling units in Korea from 2008 to 2014. The individual abundance of Uracanthella (Ephemeroptera) as a representative, one of the most common and abundant taxa in Korea, showed a typical lognormal distribution to 5-day biochemical oxygen demand (BOD<sub>5</sub>) concentration, and a normal distribution to the class interval of BOD<sub>5</sub> concentration according to saprobic series. The value combining the mean individual abundance and the relative frequency of occurrence was a more efficient indicator value than that of each property alone. Benthic Macroinertebrates Index (BMI) was newly proposed as a modification of the saprobic index of Zelinka and Marvan (1961). BMI showed extremely significant correlation (determination coefficient r<sup>2</sup> > 0.6, n = 569 sites) with the concentration of BOD<sub>5</sub>, and the coefficient was a little higher than those of the previous indices. Until now, there has been very little research on the assessment of biological integrity of benthic macroinvertebrates community in Korea. While continuing researches into improve the reliability of BMI, it is necessary to develop multimetric indices for evaluating the integrity, including the composition of species and functional guilds, and the richness and diversity of the community.
ScienceON
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