person using a net to remove duckweed from pond

person using a net to remove duckweed from pond

person using a net to remove duckweed from pond

Considered a pest by many pond owners, duckweed is a "hyper accumulator" that helps to filter nutrient pollution. However, the plant must be removed from the water prior to decomposition to reap the benefits, according to Rachel Brennan, associate professor of environmental engineering.

IMAGE: Penn State College of Engineering