Plankton communities and summertime declines in algal abundance associated with low dissolved oxygen in the Tualatin River, Oregon

Published 2015
by USGS and Clean Water Services

The results of this study indicate that algal populations in the Tualatin River are influenced by many factors that are important at various times and locations. These factors include the magnitude and sources of streamflow, available light, instream turbidity, upstream inocula, grazing by zooplankton, and the amount and bioavailability of phosphorus.