| Comparison of Zooplankton Community Patternsin Relation to Sediment Disturbances by Dredgingin the Guemho River, Korea |
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학술지명 MDPI
저자 김동균,고의정,김현우,정은송,주기재,허유지
발표일 2020-12-07
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This study aimed to determine whether a swimming-type (planktonic and epiphytic)zooplankton group compared with the taxonomic group is appropriate to indicate the environmentalchanges caused by dredging. Water sampling in the littoral zone was conducted from 2007 to 2015,including the dredging period from October 2010 to June 2012. The water quality, number of species,population densities, and biotic indices were compared for both dredging period and grouping type.Nine of 11 water quality parameters were changed by the dredging period. The results showed thatthe rotifer and planktonic groups were consistently dominant. In all groups, population density wasthe lowest during the dredging period. After dredging, both the number of species and populationdensity increased only in the epiphytic group. The dominant species, including Polyarthra vulgaris,Brachionus calyciflorus, B. rubens, and Bosmina longirostris, were included in the planktonic groupfor 9 years. Evenness did not dier, but diversity increased after the dredging period. This studyshowed that zooplankton could be used as a supplemental biological assessment tool for evaluatingthe impact of river dredging. |