UV dosimetry along an elevation gradient to characterize amphibian habitat exposure in six PRIMENet parks: Acadia, Great Smoky Mountains, Rocky Mountain, Glacier, Olympic, and Sequoia/Kings Canyon National Parks

 

Principal Investigator:

Co-Investigators:
Steve Diamond
EPA-MED
6201 Congdon Blvd.
Duluth, MN 55804
Phone: (218) 529-5229
e-mail: diamond.steve@.epa.gov
Bruce Connery, Acadia NP
Dana Soehn, Great Smoky Mountains NP
Ken Czarnowski, Rocky Mountain NP
Dan Fagre, USGS-Glacier NP
Harold Werner, Sequoia/Kings Canyon NP
Patte Happe, Olympic NP
Mike Adams, USGS-Olympic NP
Steve Corn, USGS-Glacier NP
Dave Bradford, EPA-Las Vegas
Roland Knapp, UCSB

Parks: Acadia National Park, Great Smoky Mountains National Park, Rocky Mountain National Park, Glacier National Park, Olympic National Park, Sequoia/Kings Canyon National Park

 

Project Summary:

          Experimental treatments have implicated UV-B as a stressor that can affect reproduction and development of some amphibian species. The EPA and NPS are currently monitoring UV radiation at the fourteen PRIMENet parks with Brewer spectrophotometers. We need to be able to extrapolate the Brewer data to locations along the elevation gradient in parks in order to characterize exposure to pond breeding amphibians. We have selected six of the PRIMENet parks to carry out this extrapolation. At three of the parks (Glacier, Olympic, and Sequoia/Kings Canyon) researchers will also collect amphibian data coincident with the UV exposure data. At the other three parks (Acadia, Great Smoky Mountains, and Rocky Mountain) we will take advantage of existing amphibian data to relate to UV exposure statistics.

          During the summer months, field teams will collect the following data at sites along an elevation gradient in the six parks: UV extinction using a hand held radiometer, water samples collected at each sample site to be analyzed for dissolved organic carbon (DOC), and characterization of habitat to allow for calculation of open water extent. These measurements would optimally be performed 2-3 times per season at each site.

Dose estimate validation using Brewer DUV data (Diamond)

Coordinated Studies of Ultraviolet Radiation and Lentic-Breeding Amphibians (Trenham, Diamond)

Estimated Ultraviolet Radiation Doses in Wetlands in Six National Parks (Diamond et al)

Quantifying Ultraviolet Radiation Dose Relative to Wetland Habitat Variables for the Assessment of Risk to Amphibians (Diamond et al)

Spatial and Temporal Variability in the Amount and Source of Dissolved Organic Carbon: Implications for UV Exposure in Amphibian Habitats (Brooks et al)

"Optical characteristics of natural waters protect amphibians from UV-B in the U.S. Pacific Northwest" (Palen et al) in Ecology 83(11): 2002. Related link: USGS News Release.

2001 PRIMENet Meeting Presentation: UV Exposure Estimates at Amphibian Sites (Steve Diamond)

2000 PRIMENet Meeting Presentations: Coordinated Studies of UV and Amphibian Distributions (Steve Diamond)

Ultraviolet Radiation/Amphibian Populations Workshop Report

References for this project.

 

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