Graduate student Petra Lowe collects plant community data on a research site that has been heavily invaded by exotic weeds as a result of resource manipulation on the shortgrass steppe.

Graduate student Petra Lowe

Graduate student Petra Lowe collects plant community data on a research site that has been heavily invaded by exotic weeds as a result of resource manipulation on the shortgrass steppe.

From: 
Why are exotic species so rare in the Shortgrass Steppe ecosystem?