Use of algal assays to determine the potential for phytoplankton growth / Utilisation des essais d'algues pour la détermination du potentiel pour ce qui regarde la croissance du phytoplancton

Abstract

Algal growth potential is defined as the maximum algal mass (dry weight) that can be produced in a natural water sample under standardized laboratory conditions. Algal growth potential measurements are designed to establish baseline data, growth limiting factors (nutrients), and the influence and source of various growth promoting nutrients and toxicants so as to provide improved means for predicting and controlling excessive algal growth in aquatic habitats. Data can be compared only when the variables which control algal growth are standardized. Algal growth potentials derived in the laboratory may not reflect natural conditions because of insufficient light or temperature, grazing by invertebrates or fish, or the presence of any toxic materials. An understanding of the principle of the test and the factors that affect the expression of algal growth potentials is critical to proper data interpretation.