Periphytic responses to nutrient additions can be used to monitor stream ecosystem health.  This study explored the possibility of using PAM fluorimetry as a rapid method for measuring periphytic responses to nutrient addition.  NDS with various concentrations of phosphate and nitrate were submerged in a temperate wetland for 3 weeks.  As periphytic communities became established, their fluorescence was measured.  At the end of the study, community composition was analyzed to determine any effect of nutrient treatment on the abundance of common algal taxa.  Initial results suggest a strong concordance between nutrient supply and fluorescence measurements.