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논문 기본 정보

자료유형
학술저널
저자정보
Katano, Toshiya (Ariake Sea Research Project, Saga University) Park, Chong-Sung (Department of Life Science, Hanyang University) Baek, Seung-Ho (Department of Life Science, Hanyang University) Han, Myung-Soo (Department of Life Science, Hanyang University)
저널정보
한국수생태학회 한국하천호수학회지 한국하천호수학회지 제41권 제4호
발행연도
2008.1
수록면
449 - 456 (8page)

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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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