A mechanistic model of the effects of light and temperature on algal primary productivity

Duarte, Pedro

http://hdl.handle.net/10284/278

Use this identifier to reference this record.

Name:	Description:	Size:	Format:
A mechanistic model of the effects of light and temperature on algal primary productivity.pdf		658.1 KB	Adobe PDF	Download

Send Feedback

Authors

Duarte, Pedro

Abstract(s)

In this work a model of algal primary productivity combining a mechanistic light function with a temperature Arrhenius function is presented. Data on primary productivity obtained with algae acclimated to different environmental conditions was used to test the model. A simple method for model parameter estimation based on regression analysis is described. The parameter estimates can be improved by a non-linear least-squares method (e.g. the Gauss-Newton method) resulting in a significant fit to the observed data as tested by regression analysis. According to the present model, the initial slope of the productivity/light curves is temperature dependent whilst the optimal light intensity is temperature independent. These model predictions were validated by the obtained experimental results.