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한국하천호수학회 / v.41, no.4, 2008년, pp.449-456 
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( The Effects of Nonylphenol on Freshwater Phytoplankton and Zooplankton Communities ) |
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| 초 록 |
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| Recent studies reveal that the endocrine disrupter nonylphenol can also influence the growth of planktonic organisms. To clarify the effect of nonylphenol on the whole planktonic community, we monitored planktonic abundances after addition of nonylphenol using small-scale microcosms in a laboratory. Nonylphenol was added at final concentrations of 1.25 and $2.5{mu}g;L^{-1}$, close to the EC50 for the growth of the rotifer, Brachionus calyciflorus. Chlorophyll $alpha$ concentration increased significantly between 2 to 5 days after nonylphenol treatment compared to the control. The abundance of the predominant phytoplankton, Stephanodiscus hantzschii, followed the same pattern as chlorophyll a concentration. While there was no negative effect on the abundance of ciliates and rotifers, crustacean zooplankton abundance was higher in nonylphenol treatments. Although the relationship did not reach significance, the growth rate of rotifers tended to decline with increasing nonylphenol dosing. It is likely that the decreased rotifer grazing on S. hantzschii caused significant increase in their abundance. This study emphasizes the importance of considering indirect effects of environmental pollutants when predicting the response of biological community to toxicant exposure. |
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| 키워드 |
| nonylphenol;phytoplankton;bloom;planktonic community; |
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한국하천호수학회지 / v.41, no.4, 2008년, pp.449-456
한국하천호수학회
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200806942470747)
언어 : 영어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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