This report describes methods for calculating coefficients used to depict habitat productivity for grizzly bears in the Yellowstone ecosystem. Calculations based on these coefficients are used in the Yellowstone Grizzly Bear Cumulative Effects Model to map the distribution of habitat productivity and account for the impacts of human facilities. The coefficients of habitat productivity...

Authors

David John Mattson, Kim Barber, Ralene Maw, Roy Renkin

Ecosystems Mission Area, Wetland and Aquatic Research Center , Forest and Rangeland Ecosystem Science Center

January 1, 2004

Latitudinal variation in carbon storage can help predict changes in swamps affected by global warming Latitudinal variation in carbon storage can help predict changes in swamps affected by global warming

Plants may offer our best hope of removing greenhouse gases (gases that contribute to global warming) emitted to the atmosphere from the burning of fossil fuels. At the same time, global warming could change environments so that natural plant communities will either need to shift into cooler climate zones, or become extirpated (Prasad and Iverson, 1999; Crumpacker and others, 2001; Davis...

Authors

Beth A. Middleton, Karen McKee

Ecosystems Mission Area, Wetland and Aquatic Research Center

January 1, 2004

Biomonitoring of Environmental Status and Trends (BEST) Program: Environmental contaminants and their effects on fish in the Yukon River Basin Biomonitoring of Environmental Status and Trends (BEST) Program: Environmental contaminants and their effects on fish in the Yukon River Basin

This project collected, examined, and analyzed 217 fish representing three species at 10 stations in the U.S. portion of the Yukon River Basin (YRB) from May to October 2002. Four sampling sites were located on the Yukon River; two were located on the Porcupine River, and one site was on each of the Ray, Tanana, Tolavana, and Innoko Rivers. Norther pike (Esox lucius), longnose sucker...

Authors

Jo Ellen Hinck, Timothy M. Bartish, Vicki Blazer, Nancy D. Denslow, Tim S. Gross, Mark S. Myers, Patrick J. Anderson, Carl E. Orazio, Donald E. Tillitt

Ecosystems Mission Area, Fort Collins Science Center, Eastern Ecological Science Center, Columbia Environmental Research Center

January 1, 2004

Estimating flood-peak discharge magnitudes and frequencies for rural streams in Illinois Estimating flood-peak discharge magnitudes and frequencies for rural streams in Illinois

Flood-peak discharge magnitudes and frequencies at streamflow-gaging sites were developed with the annual maximum series (AMS) and the partial duration series (PDS) in this study. Regional equations for both flood series were developed for estimating flood-peak discharge magnitudes at specified recurrence intervals of rural Illinois streams. The regional equations are techniques for...

Authors

David T. Soong, Audrey L. Ishii, Jennifer B. Sharpe, Charles F. Avery

Water Resources Mission Area, Central Midwest Water Science Center

January 1, 2004

Assessment of shallow-water habitat availability in modified dike structures, Lower Missouri River, 2004 Assessment of shallow-water habitat availability in modified dike structures, Lower Missouri River, 2004

This study documented the effects of wing-dike notching on the availability of shallow water habitat in the Lower Missouri River. Five wing dikes were surveyed in late May 2004 after they were notched in early May as part of shallow-water habitat (SWH) rehabilitation activities undertaken by the U.S. Army Corps of Engineers. Surveys included high-resolution hydroacoustic depth, velocity...

Authors

Robert B. Jacobson, Caroline M. Elliott, Harold E. Johnson

Ecosystems Mission Area, Columbia Environmental Research Center

January 1, 2004

Threatened fishes of the world: Noturus placidus Taylor, 1969 (Ictaluridae) Threatened fishes of the world: Noturus placidus Taylor, 1969 (Ictaluridae)

No abstract available.

Authors

Janice L. Bryan, Mark L. Wildhaber, Douglas B. Noltie

Ecosystems Mission Area, Columbia Environmental Research Center

January 1, 2004

Degradates provide insight to spatial and temporal trends of herbicides in ground water Degradates provide insight to spatial and temporal trends of herbicides in ground water

Since 1995, a network of municipal wells in Iowa, representing all major aquifer types (alluvial, bedrock/karst region, glacial drift, bedrock/nonkarst region), has been repeatedly sampled for a broad suite of herbicide compounds yielding one of the most comprehensive statewide databases of such compounds currently available in the United States. This dataset is ideal for documenting the...

Authors

D.W. Kolpin, D.J. Schnoebelen, E.M. Thurman

Water Resources Mission Area, Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program, Central Midwest Water Science Center

January 1, 2004

Reproductive status of western mosquitofish inhabiting selenium- contaminated waters in the Grassland Water District, Merced County, California Reproductive status of western mosquitofish inhabiting selenium- contaminated waters in the Grassland Water District, Merced County, California

This study was implemented to determine if western mosquitofish (Gambusia affinis) populations in the Grassland Water District suffer from impaired reproduction because of seleniferous inflows of agricultural drainwater from the Grassland Bypass Project. During June to July 2001, laboratory trials with pregnant female fish collected from two seleniferous treatment sites exposed to...

Authors

M. K. Saiki, B.A. Martin, T.W. May

Ecosystems Mission Area, Water Resources Mission Area, California Water Science Center, Columbia Environmental Research Center, Western Fisheries Research Center