주암호의 수질 변동 및 생물군집 특성(2011) = Water Quality Variation and Biotic Community Characteristics in Juam Lake (2011)

다국어 초록 (Multilingual Abstract)

This study was to investigate water quality and biotic community characteristics in Juam Lake. In water quality, water temperatures was 3.8~21.2°C, 6.7~8.6 in pH, 64~76 μs cm-1 in Conductivity, 5.3~13.2 mg L-1 in DO, 2.5~3.3 mg L-1 in COD, 1.0~5.1 mg L-1 in SS, 0.622~0.841 mg L-1 in T-N, 0.007~0.019 mg L-1 in T-P and 2.8~8.8 mg m-3 in Chl-a. Revised Carlson`s Index (TSIm) assessment using total phosphorus (TP) and chlorophyll-a domonstrated that the trophic states of Juam Lake were rated as mesotrophic. A total of 53 species of phytoplankton were identified. They were 28 Bacillariophyceae, 13 Chlorophyceae, 3 Cyanophyceae, and 9 Other algal taxa. The standing crops of phytoplankton was ranged from 113 cells mL-1 to 2,909 cells mL-1. A total of 16 species of zooplankton were identified (10 rotifers, 4 cladocerans and 2 copepods). Total zooplankton abundance was 309 ind. L-1 to 435 ind. L-1. The collected benthic macroinvertebrates from the surveyed sites in Juam Lake were 1,038 individuals, 33 species, 21 families and 12 orders. A dominant species was Uracanthella rufa and a subdominant species was Ecdyonurus kibunensis. Hydrophytes recorded from Juam Lake were identified 9 taxa. Emerged plants, floating plants among the hydrophytes was classified 8, 1 taxa, respectively. Ecosystem disturbance wildplant by Environment Ministry found were Paspalum distichum var. distichum and Ambrosia artemisiaefolia. A total of 30 species (6 families) were collected fishs from Juam Lake. There were 10 Korean endemic species (33.3% of collected species number) and 3 exotic species (10.0%).

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