Judith Drexler, Ph.D.
![USGS hydrologist, Judith Drexler, bushwacking through a marsh](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/USGS-judith-drexler_sacramento-san-joaquin-delta_invasive-primrose_0.png?itok=eCxs6M4V)
Detailed Description
USGS Research Hydrologist Judith Drexler bushwhacking through a marsh infested with water primrose (Ludwigia sp.) in the Sacramento-San Joaquin Delta. Judy is studying the impact of invasive aquatic plants on marsh formation in the Delta.
Sources/Usage
Public Domain.