Collecting benthic macroinvertebrates in Wrangell St. Elias National Park
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. Disclaimer statement: Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Sources/Usage
Public Domain.
Photo taken by Ashley Stanek, U.S. Geological Survey