USGS - science for a changing world

Environmental Health - Toxic Substances

Photo Gallery

Watershed- and Regional Scale Contamination

A scientist is applying a solution of water and a isotope of mercury on the shores of a lake.
Applying a solution of water and a stable isotope of mercury (202Hg) on the shores of a lake in the Experimental Lake Area (ELA) in Ontario, Canada. An international team of scientists tracked the applied mercury isotope to study the movement of mercury from the watershed into the lake and fish.
-- from the Effect of Mercury on Aquatic Ecosystems Investigation


Complete Photo Gallery Index

USGS Home Water Climate Change Science Systems Ecosystems Energy and Minerals Environmental Health Hazards

Accessibility FOIA Privacy Policies and Notices

USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: toxics.usgs.gov/photo_gallery/index_wrc_pg.html
Page Contact Information:
Page Last Modified: Wednesday, 05-Aug-2015 11:15:59 EDT