Analysis of environmental factors in sediment based on benthic macroinvertebrates in streams,Korea |
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Authors: | Myoung Chul Kim Ji Won Kim Taek Guen Lee Jung Woo Kim Seung-Phil Cheon Hong Geun Kim Tae Sik Yu Ihn Sil Kwak |
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Affiliation: | 1. SOKN Institute of Ecology and Conservation, Seoul, Korea;2. Korean Entomological Institute, Korea University, Seoul, Korea;3. Fisheries Science Institute, Chonnam National University, Yeosu, Korea |
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Abstract: | This research summarizes the data on benthic macroinvertebrates collected in the 15 streams during spring (June) and fall (September–October) of 2022. The objectives of this study were (i) to evaluate the quality of surface waters, sediments, and benthic macroinvertebrates ; and (ii) to compare the relationship with the environmental variables in water, sediments and benthic macroinvertebrates that inhabit 15 streams. A total of 114 taxa were collected. The assemblages from the 15 sites were dominated by Chironomidae and Tubificidae, especially Chironomidae constituted 45.0% density occurrence. The low grades of Benthic Macroinvertebrate Index (BMI) were calculated in 10 sites with disturbed (“poor” or “very poor”). Low BMI sites mostly showed Tubificidae or Chironomidae dominant characteristics. The biological indices, BMI, % Tubificidae, and % Chironomidae, were significantly correlated with DO and conductivity. DO was also significantly correlated with all the benthic macroinvertebrate factors and diversity except percent Tubificidae. The heavy metal parameters were correlated mostly with species number, BMI, and diversity index. The objectives of this study examine the diversity of benthic macroinvertebrate in the 15 streams and investigate the relative importance of environmental quality for benthic macroinvertebrate distribution. |
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Keywords: | benthic macroinvertebrate biological index BMI heavy metal sediment |
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