4.7 The graph below shows concentrations of nitrate and phosphate from late wint

Question

4.7 The graph below shows concentrations of nitrate and phosphate from late winter until early summer in a lake. The straight line is a linear regression fit to the data. The concentrations of both nutrients are high at the end of the winter and low by the beginning of summer. The drawdown of both nutrients is due to uptake by phytoplankton. Based on the pattern of nitrate and phosphate concentrations, which nutrient would you judge to be limiting phytoplankton biomass in the lake? Explain your reasoning.

Explanation / Answer

The graph shows that nitrate content is highly consumed by the phytoplankton compare to phosphate

so we can conclude that the phosphate can limit the phytoplankton growth control comapre to nitrate .

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