Publications
Read publications and other informational products to learn more about USGS science occurring in the Mississippi Basin.
Filter Total Items: 5657
2,3,7,8-Tetrachlorodibenzo-p-dioxin Toxicity in the Zebrafish Embryo: Local Circulation Failure in the Dorsal Midbrain Is Associated with Increased Apoptosis 2,3,7,8-Tetrachlorodibenzo-p-dioxin Toxicity in the Zebrafish Embryo: Local Circulation Failure in the Dorsal Midbrain Is Associated with Increased Apoptosis
No abstract available.
Authors
Donald E. Tillitt, Diana M. Papoulias
Interspecific differences in susceptibility to competition and predation in a species-pair of larval amphibians Interspecific differences in susceptibility to competition and predation in a species-pair of larval amphibians
Fundamental issues in the study of predator-prey interactions include addressing how prey coexist with their predators and, moreover, whether predators promote coexistence among competing prey. We conducted a series of laboratory experiments with a freshwater assemblage consisting of two predators that differed in their foraging modes (a crayfish, Procambarus sp., and the western...
Authors
Susan C. Walls, David G. Taylor, Charlena M. Wilson
Modeling the bathymetry of Catahoula Lake: Specialized technology for wetland management Modeling the bathymetry of Catahoula Lake: Specialized technology for wetland management
Catahoula Lake is the largest natural freshwater lake in Louisiana, covering more than 46 square miles (120 km2) (fig. 1). The lake is a principal stopover and wintering site for hundreds of thousands of migratory waterfowl and shorebirds. Scientists from the USGS National Wetlands Research Center are applying some of the research facility's specialties?wetland plant research, aerial and...
Authors
T.W. Doyle, T.C. Michot, C. Wells
Habitat assessment, Missouri River at Hermann, Missouri Habitat assessment, Missouri River at Hermann, Missouri
This report documents methods and results of aquatic habitat assessment in the Missouri River near Hermann, Missouri. The assessment is intended to improve understanding of spatial and temporal variability of aquatic habitat, including habitats thought to be critical for the endangered pallid sturgeon (Scaphirhynchus albus). Physical aquatic habitat – depth, velocity, and substrate – was...
Authors
Robert B. Jacobson, Mark S. Laustrup, Joanna M. Reuter
Behavioral measures of environmental stressors in fish Behavioral measures of environmental stressors in fish
No abstract available.
Authors
Edward E. Little
Tadpoles balance foraging and predator avoidance: Effects of predation, pond drying, and hunger Tadpoles balance foraging and predator avoidance: Effects of predation, pond drying, and hunger
Organisms are predicted to make trade-offs when foraging and predator avoidance behaviors present conflicting demands. Balancing conflicting demands is important to larval amphibians because adult fitness can be strongly influenced by size at metamorphosis and duration of the larval period. Larvae in temporary ponds must maximize growth within a short time period to achieve metamorphosis...
Authors
Christine M. Bridges
Water Resources Data, Florida, Water Year 2001, Volume 4. Northwest Florida Water Resources Data, Florida, Water Year 2001, Volume 4. Northwest Florida
This report series for the 2001 water year for the state of Florida consists of records for continuous or daily discharge for 387 streams, periodic discharge for 14 streams, continuous or daily stage for 147 streams, periodic stage for 2 streams, peak stage and discharge for 8 streams, continuous or daily elevations for 14 lakes, periodic elevations for 47 lakes, continuous ground-water...
Authors
Water Resources Division U.S. Geological Survey
Trace elements and nutrition interactions in fish and wildlife Trace elements and nutrition interactions in fish and wildlife
No abstract available.
Authors
S. J. Hamilton, D. J. Hoffman
Contaminants without borders: A regional assessment of the Colorado River Delta ecosystem Contaminants without borders: A regional assessment of the Colorado River Delta ecosystem
The Colorado River Delta Region (CRDR) is comprised of large agricultural areas in the U.S. (Imperial and Yuma districts) and Mexico (Mexicali and San Luis districts), the Salton Sea, and the Lower Colorado River from southern Arizona to the Gulf of California (Valdés-Casillas et al., 1998). Before agricultural development, the lower delta comprised large riparian and wetland areas...
Authors
Miguel A. Mora, Jaqueline Garcia, Maria de la Paz Carpio-Obeso, Kirke A. King
Modeling ecosystem and population dynamics on the South Florida hydroscape Modeling ecosystem and population dynamics on the South Florida hydroscape
Abstract not supplied at this time
Authors
D.L. DeAngelis, S. Bellmund, W.M. Mooij, M.P. Nott, E.J. Comiskey, L.J. Gross, W.M. Wolff
Ontogenetic improvement of visual function in the medaka Oryzias latipes based on an optomotor testing system for larval and adult fish Ontogenetic improvement of visual function in the medaka Oryzias latipes based on an optomotor testing system for larval and adult fish
We developed a system for evaluation of visual function in larval and adult fish. Both optomotor (swimming) and optokinetic (eye movement) responses were monitored and recorded using a system of rotating stripes. The system allowed manipulation of factors such as width of the stripes used, rotation speed of the striped drum, and light illuminance levels within both the scotopic and...
Authors
Paulo S. M. Carvalho, Douglas B. Noltie, D. E. Tillitt
Weak trophic interactions among birds, insects and white oak saplings (Quercus alba) Weak trophic interactions among birds, insects and white oak saplings (Quercus alba)
We examined the interactions among insectivorous birds, arthropods and white oak saplings (Quercus alba L.) in a temperate deciduous forest under 'open' and 'closed' canopy environments. For 2 y, we compared arthropod densities, leaf damage and sapling growth. Saplings from each canopy environment were assigned to one of four treatments: (1) reference, (2) bird exclosure, (3) insecticide...
Authors
J.S. Lichtenberg, D.A. Lichtenberg