Parks in this Network
Freshwater Contaminants Monitoring
Parks monitored: Glacier Bay, Klondike Gold Rush, Sitka
Protocol under development - contents subject to change.
SEAN's long-term freshwater contaminants monitoring program is still under development. It is intended to fulfill these objectives:
- Assess the level of mercury and POPs in various physical and biological components of SEAN ecosystems.
- Compare the contamination levels against state and federal criteria (when available) and to findings from other studies.
- Determine temporal trends in the contaminant occurrence and concentration
- Determine whether particular landscape types are disproportionately efficient at accumulating and/or exporting contaminants within their watersheds.
Eagles-Smith, C.A., Willacker, J.J., and Flanagan Pritz, C.M. 2014, Mercury in fishes from 21 national parks in the Western United States—Inter and intra-park variation in concentrations and ecological risk: U.S. Geological Survey Open-File Report 2014-1051, 54 p. http://dx.doi.org/10.3133/ofr20141051. » USGS Repository
Results of 2007 Sampling
Nineteen park rivers were surveyed for contaminants in summer 2007. Water samples were taken and analyzed for levels of mercury as well as ancillary elements and compounds. Specimens of mayflies and juvenile coho salmon were analyzed for mercury as well.
In a related examination, juvenile coho salmon were taken from the same park rivers. Levels of various persistent organic pollutants were measured in their tissues. They are presented here in XLSX spreadsheet form.