It is said that a pond becomes eutrophic with higher values of N/P ratio. It starts to be covered with algal blooms, checks light penetration causing the death of the organisms inside. I wanted to know what is the range of value of N/P ratio exactly to be the water body eutrophic?
Dear researcher
Please see this manuscript in Pg:941, they have discussed some valid reasons for lake/pond water were becoming eutrophic and also denoted the ranges.
Article The nitrogen:phosphorus relationship in lakes
An additional idea, you can categorize an aquatic (lake or pond) ecosystem by using the obtained values of N and P alone. See Table-2 in a linked manuscript Article Mechanisms and Assessment of Water Eutrophication
Regards
Sathish
Dear Hom Pathak
Firstly, it is important to note that the range is very wide and it depends on many other factors. One of the method I prefer to use to estimate the ratio for certain algae is by converting the ratio of atomic compositions and later convert it into mass. For example, green microalgae have the atomic composition of 10:1 to 20:1, we can convert it to become mas ratio and obtain ratio of 4.5:1 to 9.5:1 (Chiaudani & Vighi, 1974).
for further materials,you can refer to these articles
Article Cause and effect of N/P ratio decline with eutrophication ag...
said that the lower N:P the more eutrophic level
http://www.chnep.wateratlas.usf.edu/upload/documents/EutrophicationAndHABs.pdf said that it range from less than 1 to 10
Article Seasonal variability of N:P ratios in eutrophic lakes
less than 1: 1 to 6 : 1
Article The Characteristics of Nutrients and Eutrophication in the P...
high ratio (above 30) still supported the occurrence of eutrophication
Hope this one helps you
Good luck
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