Phycology and River Ecology Laboratory, Department of Botany, Osmania University, 500 007, Hyderabad, India.
Environ Monit Assess. 1994 Nov;33(2):85-99. doi: 10.1007/BF00548591.
The impact of liquid wastes from a paper mill on the benthic diatoms in flowing waters has been studied for a period of two years. Water and algal samples were analysed at monthly intervals at three sites along the course of the river, along with raw effluents. The water before the confluence of effluents was well oxygenated with an alkaline pH. Organic matter, NH3 and nutrients were recorded at low concentrations. At the entry of effluents, the water showed considerable decline in dissolved oxygen content, increase in organic matter, hardness, Cl, HCO3 and total dissolved solids. Diatoms constituted 61% by numerical abundance and were reduced to 25% of total algae at the entry of effluents. Multiple regression analysis was employed to discover the relative importance of various physicochemical variables on the abundance and distribution of diatoms at various sampling stations. Mathematical equations were derived involving the physicochemical variables for better prediction of algal number.
研究了造纸厂的废水对流水底栖硅藻的影响，为期两年。在河流沿线的三个地点，每月对水和藻类样本进行分析，同时还对原废水进行分析。在废水混合前，水的含氧量充足，呈碱性 pH 值。有机物、NH3 和营养物质的浓度较低。在废水入口处，水中的溶解氧含量显著下降，有机物、硬度、Cl、HCO3 和总溶解固体的含量增加。硅藻在数量上占 61%，而在废水入口处则减少到藻类总数的 25%。采用多元回归分析来发现各种物理化学变量对不同采样点硅藻丰度和分布的相对重要性。得出了涉及物理化学变量的数学方程，以便更好地预测藻类数量。
