Relationship Between Cross-Sectional Absorption And Chlorophyll Content In Natural Populations Of Marine Phytoplankton

Charles S Yentsch; David A Phinney

doi:10.1117/12.945714

12 August 1988 Relationship Between Cross-Sectional Absorption And Chlorophyll Content In Natural Populations Of Marine Phytoplankton

Charles S Yentsch, David A Phinney

Author Affiliations +

Proceedings Volume 0925, Ocean Optics IX; (1988) https://doi.org/10.1117/12.945714
Event: 1988 Technical Symposium on Optics, Electro-Optics, and Sensors, 1988, Orlando, FL, United States

Abstract

We have measured the in vivo absorption of light (670 nm) by natural phytoplankton populations collected from a variety of locations in the North Atlantic Ocean. There is a strong correlation between chlorophyll content and absorption. By using a linear regression model the mean value for chlorophyll specific absorption (A*) is 0.0138. The range in this value is about .0100 - .0300. At chlorophyll concentrations less than 0.5 gg/1 the slope differs from the slope at higher concentrations. The scatter of points around the mean increases with increasing chlorophyll. By grouping chlorophyll concentrations a mean and standard error have been determined for each group. This allows the entire data set to be fitted with a power model curve (Y = aXb). The exponent b is 0.758(3/4) which argues that A* is a function of cell volume, i.e., A* = .0667 Chlag/1)-758.

Citation Download Citation

Charles S Yentsch and David A Phinney "Relationship Between Cross-Sectional Absorption And Chlorophyll Content In Natural Populations Of Marine Phytoplankton", Proc. SPIE 0925, Ocean Optics IX, (12 August 1988); https://doi.org/10.1117/12.945714

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