Department of Plant Pathology, National Chung Hsing University, 250 Kuo Kuan Rd, Taichung 402, Taiwan.
Environ Pollut. 2010 May;158(5):1741-7. doi: 10.1016/j.envpol.2009.11.015. Epub 2009 Dec 8.
Nematode communities from river water and sediments were assessed for the abundance, feeding types, maturity indices and nematode channel ratio (NCR). The sampling sites studied included different levels of pollution and contamination from agricultural, industrial and sewage sources. The nematode abundance found in the sediment samples was more than that in the water samples. The lowest nematode abundance in sediment samples and the lowest NCR in water samples were both found at the industrial pollution site. Water samples showed positive correlation between the NCR and river pollution index (RPI). Mean maturity indices in sediment samples were inversely correlated with RPI. The pollutant source determined the relationship between NCR and pollution level, while maturity index always showed negative correlation with pollutant level regardless of the pollutant sources. The nematode abundance and its community structure were both reliable bioindicators for monitoring long-term river pollution in both qualitative and quantitative aspects.
研究了来自河水和沉积物的线虫群落，评估了它们的丰度、摄食类型、成熟度指数和线虫通道比（NCR）。研究的采样点包括来自农业、工业和污水源的不同污染和污染水平。沉积物样本中的线虫丰度高于水样中的线虫丰度。在工业污染点，沉积物样本中的线虫丰度最低，水样中的 NCR 也最低。水样中的 NCR 与河流污染指数（RPI）呈正相关。沉积物样本中的平均成熟度指数与 RPI 呈负相关。污染来源决定了 NCR 与污染水平之间的关系，而成熟度指数无论污染来源如何，始终与污染水平呈负相关。线虫丰度及其群落结构都是监测长期河流污染的可靠生物指标，无论是定性还是定量方面。
