Seasonal changes in bacterial numbers and plant nutrients in point and non-point source ponds

Environmental Pollution Series A, Ecological and Biological Pub Date : 1986-01-01 DOI:10.1016/0143-1471(86)90067-X

G.B. Reddy, Edwenda Ford, David Aldridge

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引用次数: 20

Abstract

The numbers of bacteria (total coliforms (TC), faecal coliforms (FC) and total aerobic bacteria (TAB) and nutrients (NH₄⁺, NO₃⁻ and PO₄⁻) in ponds receiving runoff from point and non-point sources were monitored at different seasons. Turbidity, BOD, pH and dissolved solids were measured. Neutral pH range (6·0–8·0) was observed in all the samples. In both ponds available nitrogen and phosphorus concentrations were significantly (p<0·05) higher in sediment than in water. Lower temperatures in the winter correlated significantly (p<0·05) with TAB, TC and FC bacteria. Nitrogen, especially NO₃, was also correlated (p<0·05) with all bacterial (TAB, TC and FC) counts. However, PO₄ correlated negatively with the TC and FC in sediments and TC in surface water of both ponds. Faecal coliform numbers in the winter exceeded the recommended water quality standards.

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点源和非点源池塘细菌数量和植物养分的季节变化

监测了不同季节点源和非点源径流池中细菌(总大肠菌群(TC)、粪便大肠菌群(FC)、总需氧细菌(TAB)和营养物质(NH4+、NO3−和PO4−)的数量。测定了浊度、生化需氧量、pH值和溶解固形物。所有样品的中性pH值范围为6·0 ~ 8·0。两个池塘沉积物中有效氮、磷浓度均显著高于水中(p < 0.05)。冬季低温与TAB、TC和FC细菌呈显著相关(p < 0.05)。氮(尤其是NO3)与细菌(TAB、TC和FC)计数也有相关性(p< 0.05)。PO4与沉积物中TC和FC以及两塘地表水TC呈负相关。冬季粪便大肠菌群数量超过建议水质标准。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Environmental Pollution Series A, Ecological and Biological

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