US DEPARTMENT OF AGRICULTURE / SCIENCE PHOTO LIBRARY US DEPARTMENT OF AGRICULTURE / SCIENCE PHOTO LIBRARY
Aquatic weed control. Plant pathologist studying a sample of Eurasian watermilfoil (Myriophyllum spicatum) in a lake. He is part of a team researching treatments to control this invasive species which was introduced to North America in the 1800s. Eurasian watermilfoil is a perennial submerged species which has adverse economic and ecological impacts due its prolific growth and subsequent decomposition.
Model release available. Property release not required.