Statistical analysis of nitrate concentrations from the River Frome (Dorset) for the period 1965–76 |
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Authors: | H. CASEY R.T. CLARKE |
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Affiliation: | Freshwater Biological Association, River Laboratory, England |
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Abstract: | SUMMARY. Statistical analysis has been carried out on 11 years (1965–75) weekly data of nitrate concentrations and discharge values from the R. Frome (Dorset). The results have shown a trend over the 11-year period with nitrate concentrations increasing by 0.11 mg NO3-N 1−1 per year. A predictive model for nitrate concentrations for 1976 was made and even though discharge conditions were extreme, the mean predicted nitrate concentration of 3.37 ± 0.136 mgNO3-N1−1 was very close to the observed mean nitrate concentration of 3.44mgN03-N1−1. |
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