Application of underwater light measurements in nutrient and production studies in shallow rivers |
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| Authors: | S L WONG B CLARK D S PAINTER |
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| Institution: | Limnology and Toxicity Section, Ministry of the Environment, Rexdale, Ontario |
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| Abstract: | Due to fluctuations in water turbidity, river depth and total reflection from one river section to another, plant production is poorly correlated to solar radiation incident on the water surface. A relationship was observed between daily relative photosynthesis and photosynthetically available radiation (PAR) at the plant depth for Cladophora, with a correlation coefficient (r) of 0·73. Therefore, the effect of low light levels can be compensated for when evaluating nutrient-growth relationships for Cladophora in the field. |
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