Collecting benthic macroinvertebrates in Wrangell St. Elias National Park
![Two scientists in a boat on lake. Sam collects benthic macroinvertebrates using an Eckman grab. Green hills in background.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/media/images/USGS%202022-06-16%2012.41.36.jpg?itok=by98OhWl)
Detailed Description
Sam Graf (NPS – LACL) collects benthic macroinvertebrates using an Eckman grab in Wrangell St. Elias National Park as part of a study examining mercury in lake food webs.
Sources/Usage
Public Domain.
Photo taken by Ashley Stanek, U.S. Geological Survey