Algal sampling and removal of subsample
![Algal sampling and removal of subsample](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/1A-1%20Algal%20sampling%20removal%20of%20subsample.jpg?itok=d0LuxO0J)
Detailed Description
USGS scientist removing attached algae from a defined surface area on one of multiple rocks collected in riffles at a stream site.
Sources/Usage
Public Domain.
USGS scientist removing attached algae from a defined surface area on one of multiple rocks collected in riffles at a stream site.
Public Domain.