Water-quality and amphibian population data for Maryland, Washington, D.C., and Virginia, 2001-2004

Open-File Report 2004-1401
Prepared in cooperation with U.S. Fish and Wildlife Service (Patuxent Research Refuge), U.S. Department of Agriculture (Beltsville Agricultural Research Center), and National Park Service (Rock Creek Park, Shenandoah National Park)
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Data on the chemical composition of water and on amphibian populations were collected at least annually from vernal pool and stream sites in Maryland, Washington, D.C., and Virginia, from 2001 through 2004. The data were collected as part of long-term monitoring projects of the Northeast Region of the Amphibian Research and Monitoring Initiative (ARMI) of the U.S. Geological Survey. Water samples were analyzed for temperature, specific conductance, pH, dissolved-oxygen concentration, acid-neutralizing capacity, and concentrations of total Kjeldahl nitrogen and total phosphorus; in 2004, samples also were analyzed for nitrite plus nitrate concentrations and total nitrogen concentrations. Field and laboratory analytical results of water samples and quality-assurance information are presented. Amphibian population data include the presence of amphibian species and the maximum number of egg masses of wood frogs and spotted salamanders at vernal pools, and counts of amphibians made during stream transect and stream quadrat surveys.

Study Area

Publication type Report
Publication Subtype USGS Numbered Series
Title Water-quality and amphibian population data for Maryland, Washington, D.C., and Virginia, 2001-2004
Series title Open-File Report
Series number 2004-1401
DOI 10.3133/ofr20041401
Year Published 2004
Language English
Publisher U.S. Geological Survey
Publisher location Richmond, VA
Contributing office(s) Toxic Substances Hydrology Program, Virginia Water Science Center
Description iv, 45 p.
Country United States
State Maryland, Virginia, Washington, D.C.
Other Geospatial Beltsville Agricultural Research Station, Patuxent Research REfuge, Rock Creek Park, Shenandoah National Park
Online Only (Y/N) Y
Google Analytic Metrics Metrics page
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