Phytoplankton photosynthetic parameters in central Canadian lakes. Fee, E., J., Hecky, R., E., & Welch, H., E. Journal of Plankton Research, 9:305-316, 1987.
Phytoplankton photosynthetic parameters in central Canadian lakes [pdf]Paper  abstract   bibtex   
Values for two biological parameters - (i) P(m,b), the light saturated rate of photosynthesis per unit of chlorophyll and (ii) (alpha), the slope of light limited part of the photosynthesis versus light curve per unit of chlorophyll - must be known in order to be able to estimate rates of phytoplankton primary production from chlorophyll data. These paramters were measured for periods of up to 9 years in central Canadian lakes located in temperate, subarctic and arctic climatic zones. Regardless of their geographic locations, lakes where integral photosynthesis was nutrient limited had lower values of these parameters than did lakes where integral photosynthesis was light limited. Temperature set an upper limit to the variability of P(m,b) but was not a good predictor of its actual value. Year-to-year variability of photosynthesis parameters in the most intensively studied group of lakes was large: annual means varied by a factor of three over a 9-year period. Until the souces and extent of this variability are known, accurate production estimates can be obtained from chlorophyll data only if the P(m,b) and (alpha) are measured in each water body and in every year. Implications for estimating primary production from remotely-sensed chlorophyll data are discussed.
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 title = {Phytoplankton photosynthetic parameters in central Canadian lakes},
 type = {article},
 year = {1987},
 pages = {305-316},
 volume = {9},
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 abstract = {Values for two biological parameters - (i) P(m,b), the light saturated rate of photosynthesis per unit of chlorophyll and (ii) (alpha), the slope of light limited part of the photosynthesis versus light curve per unit of chlorophyll - must be known in order to be able to estimate rates of phytoplankton primary production from chlorophyll data. These paramters were measured for periods of up to 9 years in central Canadian lakes located in temperate, subarctic and arctic climatic zones. Regardless of their geographic locations, lakes where integral photosynthesis was nutrient limited had lower values of these parameters than did lakes where integral photosynthesis was light limited. Temperature set an upper limit to the variability of P(m,b) but was not a good predictor of its actual value. Year-to-year variability of photosynthesis parameters in the most intensively studied group of lakes was large: annual means varied by a factor of three over a 9-year period. Until the souces and extent of this variability are known, accurate production estimates can be obtained from chlorophyll data only if the P(m,b) and (alpha) are measured in each water body and in every year. Implications for estimating primary production from remotely-sensed chlorophyll data are discussed.},
 bibtype = {article},
 author = {Fee, E. J. and Hecky, R. E. and Welch, H. E.},
 journal = {Journal of Plankton Research},
 keywords = {ELA,L223,L227,L239,L382,Manitoba,PHYTOPLANKTON,PRIMARY PRODUCTION,SIL}
}
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