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구리, 카드뮴, 펜벤다졸, 설파티아졸이 국내산 풍년새우 생존에 미치는 영향
문성대(Seong-Dae Moon),조창현(Chang-Hyun Cho),곽인실(Inn-Sil Kwak),이창훈(Chang-Hoon Lee) 환경독성보건학회 2009 환경독성보건학회지 Vol.24 No.4
The short term (24-hr) and long term (21 days) effects of copper, cadmium, fenbendazole and sulfathiazole on the survival of the Korean fairy shrimp Branchinella kugenumaensis were evaluated. The 24-hr median lethal concentrations (LC<SUB>50</SUB>) of copper, cadmium, fenbendazole, and sulfathiazole were 39, 512, 182, and 31,818 ㎍/L, respectively. The toxicity of copper is highest among 4 chemicals used in this study, while sulfathazole the lowest. After the long term (21 days) exposure experiment, the LC<SUB>50</SUB> copper, cadmium, fenbendazole, and sulfathiazole were 1.12, 2.1, 0.1, 6.6 ㎍/L, respectively. The long term effects of antibiotics were highly enhanced while the short-term effects were not strong. The sensitivities of B. kugenumaensis to copper and cadmium were higher than or comparable to those of other freshwater branchiopods (Streptocephalus spp., Thamnocephalus sp.), and far higher than the marine species (Artemia sp.). There were significant effects on the survival of B. kugenumaensis after long term exposure to relatively lower concentrations of copper, cadmium, fenbendazole and sulfathiazole. Therefore, B. kugenumaensis seems quite a good candidate species for the ecotoxicological assessments of freshwater environments.
금강 수계 백제보에서 어류의 종 특성 평가 및 생태평가모델 적용
문성대 ( Seong Dae Moon ),한정호 ( Jeong Ho Han ),안광국 ( Kwang Guk An ) 한국환경과학회 2015 한국환경과학회지 Vol.24 No.6
The objectives of study were to evaluate fish species compositions of trophic guilds and tolerance guilds and apply ecological fish assessment (EFA) models to Bekjae Weir, Keum-River Watershed. The EFA models were Stream Index ofBiological Integrity (SIBI) used frequently for running water and Lentic Ecosystem Health Assessment (LEHA) used for assessments of stagnant water. The region of Bekjae Weir as a "four major river project" was originally a lotic ecosystem before the weir construction (2010, BWC) but became more like lentic-lotic hybrid system after the construction (2011, AWC). In the analysis of species composition and ecological bioindicator (fish), fish species with a preference of running water showed significant decreases (p < 0.05), whereas the species with a preference of stagnant water showed significant increases (p < 0.05). After the weir construction, relative abundances of tolerant species increased, and the proportion of insectivores decreased. This phenomenon indicated the changes of biotic compositions in the system by the weir construction. Applications of SIBI and LEHA models to the system showed that the two model values decreased at the same time after the weir construction (AWC), and the region became more like lentic-lotic hybrid system, indicating the degradation of ecosystem health. The model values of SIBI were 19 and 16, respectively, in the BWC and AWC, and the health conditions were both "C-rank". In the mean time, the LEHA model analysis showed that the values was 28 in the BWC and 24 in the AWC, thus the health was turned to be "B-Rank" in the BWC and "C-Rank" in the AWC. indicating a degradation of ecological heath after the weir construction.
저서환경에서 이산화탄소 노출에 따른 국내산 해산무척추동물요각류(Tisbe sp.)와 단각류(Monocorophium acherusicum)의 만성영향
문성대 ( Seong Dae Moon ),최태섭 ( Tae Seob Choi ),성찬경 ( Chan Gyoung Sung ),이정석 ( Jung Suk Lee ),박영규 ( Young Gyu Park ),강성길 ( Seong Gil Kang ) 한국환경과학회 2013 한국환경과학회지 Vol.22 No.3
Chronic effects such as reproduction and population dynamics with elevated CO2 concentration were evaluated using two Representative marine benthic species, copepod(Tisbe sp.) and amphipod(Monocorophium acherusicum) adopting long term exposure. Juvenile copepod and amphipod individuals were cultivated in the seawater equilibrated with control air (0.395mmol CO2/air mol) and high CO2 air having 0.998, to 3.03, 10.3 and 30.1 mmol CO2/air mol during 20 and 46 days, respectively. After the exposure period, the number of benthic invertebrate was counted with separate larval and juvenile stage such as naupliar, copepodid and adult for copepod, or neonate and adult for amphipod, respectively. The individual number of bothtese species at each life stage was significantly decreased in seawater with 10.3 mmol CO2/air mol or higher. Recently, the technology of marine CO2 sequestration has been developed for the reduction of CO2 emission, which may cause climate change. However, under various scenarios of CO2 leaks during the injection process or sequestrated CO2 in marine geological structure. The potential risk to organism including various invertebrates can be expected to exposure. So the results of this study suggested that the detailed consideration on the adverse effect with marine ecosystem can be prerequisite for marine CO2 sequestration projects.