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KMID : 0613820190290050580
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Journal of Life Science
2019 Volume.29 No. 5 p.580 ~ p.587
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Species Composition of Benthic Macroinvertebrates and Water Evaluation Using Their Species in the Songji River in Korea
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Lee Byeong-Ryong
Huh Man-Kyu
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Abstract
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Benthic macroinvertebrates were analyzed in March, June, September, and December 2018 to evaluate water quality in the Songji River in Sacheon-ci, Korea. The identified benthic macroinvertebrates included 447 individuals belonging to 20 species, 18 families, 12 orders, 5 classes, and 3 phyla. Various ecological parameters were estimated for evaluation of the river status. The total ecological score of benthic macroinvertebrate community (TESB) varied from 17 (Station D) to 41 (Station A). The saprobic index and ecological score of benthic macroinvertebrate community (ESB) for the evaluation of river status revealed a water quality evaluation at Station A of II (oligosaprobic), indicating some satisfactory water protection. The benthic macroinvertebrate index (BMI) varied from 25.207 (Site C) to 39.348 (Station A). The evaluation of the river status at Stations C and D was polysaprobic, and sensitive taxa were absent. The mean Shannon-Weaver index (H´) of diversity varied from 1.288 (Station D) to 2.250 (Station A). The classification of saprobity based on H’ was β-mesosaprobic at Station A and α-mesosaprobic at the other stations. The value of geometric density was varied from 1.229 (Station A) to 2.071 (Station D), with a mean of 1.582. An artificial load is being added to this river. One of load is the rectal river construction which flows straight through the river physics. Thus, the environment of living organisms deteriorates due to insufficient water. In order to secure the quality of the Songji River and a good environmental habitat, several low-height stepped-beam structures are required.
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KEYWORD
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Benthic macroinvertebrate index (BMI), dominance index (DI), Shannon-Weaver index (H´), Songji River,, water quality
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