University of Alaska Southeast

University of Alaska Southeast

Other agencies

Mercury dynamics in contrasting watersheds of Glacier Bay National Park and Preserve

Glacier Bay National Park and Preserve (GBNPP), like many pristine high-latitude areas, is currently at risk from atmospherically derived contaminants such as Hg. Although the harmful effects of Hg are well established, information on this pollutant in southeast Alaska is scarce. We investigated Hg dynamics in three adjacent, small streams in GBNPP draining contrasting landscapes yet receiving the same atmospheric inputs. We assessed the level of this contaminant in several aquatic components (water, sediments, and biological tissue), tracked aqueous concentrations over variable seasonal conditions, and evaluated differences among watersheds. Discharge was measured and water samples were collected on 20 occasions over the course of 2 years and processed and analyzed for total and methylmercury (both filtered and particulate), dissolved organic carbon quanity and quality, and ancillary stream water parameters (pH, dissolved oxygen, specific conductance, and temperature). Major cations and anions were measured on four sampling events. Mercury was analyzed in streambed sediment on one event, and in juvenile coho salmon and several taxa of benthic macroinvertebrates during the early summer of both study years.

Data and Resources

Status: Complete
Start Date: 2009/11/01
Type: Project
End Date: 2012/09/30
Primary Contact
Nagorski, Sonia
Email: sanagorski@alaska.edu
Work: 907-796-6580
Primary Agency
University of Alaska Southeast
Type
Academic

Funding Agency
US Geological Survey
Type
Federal

Other Agencies
National Park Service

Geo-keywords
Southeast

Collection
Alaska Coastal Rainforest Center (ACRC)

Direct Record Link
http://southeast.epscor.alaska.edu/catalogs/6827-mercury-dynamics-in-contrasting-watersheds-of-g
Top