Researchers Seek Diagnostic Tool.

• Position: ALGAL BLOOMS - Brief article

Harmful algal blooms in rivers and streams are neither well understood nor easily predicted, but researchers are hoping to change that, as a team of scientists at Ohio State University, Columbus, is working to develop a widely applicable system for assessing watershed health and determining when a crisis is looming.

"If we can create a diagnostic tool that can be used in watersheds of all types, it will allow us to better manage and prevent major problems relative to nutrient enrichment and harmful algal blooms," says Mazeika Sullivan, associate professor of environment and natural resources and director of the Olentangy River Wetland Research Park.

"We want to take the science and create a tool for natural resources agencies, educators, and watershed-protection organizations so that we can be less reactive and more proactive."

Algae is a normal part of freshwater systems but, when harmful colonies proliferate, they choke out native plants and...