Publications
Read publications and other informational products to learn more about USGS science occurring in the Mississippi Basin.
Filter Total Items: 5586
Cooperative Manatee Research in Puerto Rico Cooperative Manatee Research in Puerto Rico
Abstract not supplied at this time
Authors
James P. Reid
Sternotherus depressus Tinkle and Webb 1955. Flattened musk turtle Sternotherus depressus Tinkle and Webb 1955. Flattened musk turtle
Abstract not supplied at this time
Authors
C.K. Dodd
Back to the basics: Lake Tahoe, California /Nevada: Geography and mathematics Back to the basics: Lake Tahoe, California /Nevada: Geography and mathematics
Back to the Basics: Lake Tahoe, California/Nevada* continues the Wetland Education Through Maps and Aerial Photography (WETMAAP) Program of exercises on teaching foundational map reading and spatial differentiation skills. It is the third published exercise from the Back to the Basics series developed by the WETMAAP Program. The current exercise modified is from the Lake Tahoe Back to...
Authors
Lawrence R. Handley, Catherine M. Lockwood, Nathan Handley
Monitoring for methane gas in Carbon and Emery Counties, Utah, 1995-2003 Monitoring for methane gas in Carbon and Emery Counties, Utah, 1995-2003
The release of methane gas from coal beds creates the potential for it to move into near-surface environments through natural and human-made pathways. To help ensure the safety of communities and determine the potential effects of development of coal-bed resources, methane gas concentrations in soils and ground water in Carbon and Emery Counties, Utah, were monitored from 1995 to 2003. A...
Authors
Andrew L. Burr, Bernard J. Stolp, Kevin K. Johnson, Gilbert L. Hunt
Examining multiple sublethal contaminants on the gray treefrog (Hyla versicolor): effects of an insecticide, herbicide, and fertilizer Examining multiple sublethal contaminants on the gray treefrog (Hyla versicolor): effects of an insecticide, herbicide, and fertilizer
We examined the single and interactive effects of an insecticide, an herbicide, and a fertilizer on gray treefrog (Hyla versicolor) tadpoles. Tadpoles were reared in mesocosms from hatching through metamorphosis and were exposed to the presence or absence of as many as three contaminants. Tadpoles did not appear to be more susceptible to single versus multiple contaminants, which may...
Authors
M.D. Boone, C. M. Bridges-Britton
Flow and form in rehabilitation of large-river ecosystems: an example from the Lower Missouri River Flow and form in rehabilitation of large-river ecosystems: an example from the Lower Missouri River
On large, intensively engineered rivers like the Lower Missouri, the template of the physical habitat is determined by the nearly independent interaction of channel form and flow regime. We evaluated the interaction between flow and form by modeling four combinations of modern and historical channel form and modern and historical flow regimes. The analysis used shallow, slow water...
Authors
R. B. Jacobson, D.L. Galat
Invasion in a diversity hotspot: Exotic cover and native richness in the Californian serpentine flora Invasion in a diversity hotspot: Exotic cover and native richness in the Californian serpentine flora
Exotic species have been observed to be more prevalent in sites where the richness of native species is highest, possibly reflecting variation among sites in resources, propagule supply, heterogeneity, or disturbance. However, such a pattern leaves unclear whether natives at species-rich sites are subject to especially severe impacts from exotics as a result. We considered this question...
Authors
S. Harrison, J.B. Grace, K.F. Davies, H.D. Safford, J.H. Viers
Hydroecological modeling of the Lower Missouri River Hydroecological modeling of the Lower Missouri River
No abstract avaikable
Authors
H.E. Johnson, R. B. Jacobson, A. J. DeLonay
Interlaboratory evaluation of Hyalella azteca and Chironomus tentans short-term and long-term sediment toxicity tests Interlaboratory evaluation of Hyalella azteca and Chironomus tentans short-term and long-term sediment toxicity tests
Methods for assessing the long-term toxicity of sediments to Hyalella azteca and Chironomus tentans can significantly enhance the capacity to assess sublethal effects of contaminated sediments through multiple endpoints. Sublethal tests allow us to begin to understand the relationship between short-term and long-term effects for toxic sediments. We present an interlaboratory evaluation...
Authors
T. J. Norberg-King, P.K. Sibley, G.A. Burton, C.G. Ingersoll, N.E. Kemble, S. Ireland, D.R. Mount, C.D. Rowland
Mapping vegetation communities in Ozark National Scenic Riverways: final technical report to the National Park Service Mapping vegetation communities in Ozark National Scenic Riverways: final technical report to the National Park Service
Vegetation communities were mapped at two levels in Ozark National Scenic Riverways (ONSR) usign a hybrid combination of statistical methods and photointerpretation. The primary map includes 49 cover classes, including 24 cleasses that relate to vegetation associations currenly described by the United States National Vegetation Classification Standard (USNVC: The Nature Conservancy...
Authors
Robert A. Chastain, Matthew A. Struckhoff, Keith W. Grabner, Esther D. Stroh, Hong He, David R. Larsen, Timothy A. Nigh, Jim Drake
Vanishing before our eyes Vanishing before our eyes
No abstract available
Authors
Wylie C. Barrow, William R. Fontenot, Madeline H. Barrow, Richard A. DeMay, David Muth
Endocrine disrupting chemicals and endocrine active agents Endocrine disrupting chemicals and endocrine active agents
Abstract not supplied at this time
Authors
T. S. Gross, B.S. Arnold, M. S. Sepulveda, K. McDonald