Publications
Read publications and other informational products to learn more about USGS science occurring in the Mississippi Basin.
Filter Total Items: 5583
Methods for estimating selected low-flow frequency statistics and harmonic mean flows for streams in Iowa Methods for estimating selected low-flow frequency statistics and harmonic mean flows for streams in Iowa
A statewide study was conducted to develop regression equations for estimating six selected low-flow frequency statistics and harmonic mean flows for ungaged stream sites in Iowa. The estimation equations developed for the six low-flow frequency statistics include: the annual 1-, 7-, and 30-day mean low flows for a recurrence interval of 10 years, the annual 30-day mean low flow for a...
Authors
David A. Eash, Kimberlee K. Barnes
Trends in methyl tert-butyl ether concentrations in private wells in southeast New Hampshire: 2005 to 2015 Trends in methyl tert-butyl ether concentrations in private wells in southeast New Hampshire: 2005 to 2015
In southeast New Hampshire, where reformulated gasoline was used from the 1990s to 2007, methyl tert-butyl ether (MtBE) concentrations ≥0.2 μg/L were found in water from 26.7% of 195 domestic wells sampled in 2005. Ten years later in 2015, and eight years after MtBE was banned, 10.3% continue to have MtBE. Most wells (140 of 195) had no MtBE detections (concentrations
Authors
Sarah Flanagan, Joseph P. Levitt, Joseph D. Ayotte
Evaluation of modeled bacteria loads along an impaired stream reach receiving discharge from a municipal separate storm sewer system in Independence, Mo. Evaluation of modeled bacteria loads along an impaired stream reach receiving discharge from a municipal separate storm sewer system in Independence, Mo.
The Little Blue River in Jackson County, Missouri, was listed as impaired in 2012 due to Escherichia coli (E. coli) from urban runoff and storm sewers. A study was initiated to characterize E. coli concentrations and loads to aid in the development of a total maximum daily load implementation plan. Longitudinal sampling along the stream revealed spatial and temporal variability in E...
Authors
Allison Flickinger, Eric D. Christensen
Hierarchical stochastic modeling of large river ecosystems and fish growth across spatio-temporal scales and climate models: the Missouri River endangered pallid sturgeon example Hierarchical stochastic modeling of large river ecosystems and fish growth across spatio-temporal scales and climate models: the Missouri River endangered pallid sturgeon example
We present a hierarchical series of spatially decreasing and temporally increasing models to evaluate the uncertainty in the atmosphere – ocean global climate model (AOGCM) and the regional climate model (RCM) relative to the uncertainty in the somatic growth of the endangered pallid sturgeon (Scaphirhynchus albus). For effects on fish populations of riverine ecosystems, cli- mate output...
Authors
Mark L. Wildhaber, Christopher K. Wikle, Edward H. Moran, Christopher J. Anderson, Kristie J. Franz, Rima Dey
A fully-stochasticized, age-structured population model for population viability analysis of fish: Lower Missouri River endangered pallid sturgeon example A fully-stochasticized, age-structured population model for population viability analysis of fish: Lower Missouri River endangered pallid sturgeon example
We develop a fully-stochasticized, age-structured population model suitable for population viability analysis (PVA) of fish and demonstrate its use with the endangered pallid sturgeon (Scaphirhynchus albus) of the Lower Missouri River as an example. The model incorporates three levels of variance: parameter variance (uncertainty about the value of a parameter itself) applied at the...
Authors
Mark L. Wildhaber, Janice L. Albers, Nicholas S. Green, Edward H. Moran
Hydrologic modeling in a marsh-mangrove ecotone: Predicting wetland surface water and salinity response to restoration in the Ten Thousand Islands region of Florida, USA Hydrologic modeling in a marsh-mangrove ecotone: Predicting wetland surface water and salinity response to restoration in the Ten Thousand Islands region of Florida, USA
At the fringe of Everglades National Park in southwest Florida, United States, the Ten Thousand Islands National Wildlife Refuge (TTINWR) habitat has been heavily affected by the disruption of natural freshwater flow across the Tamiami Trail (U.S. Highway 41). As the Comprehensive Everglades Restoration Plan (CERP) proposes to restore the natural sheet flow from the Picayune Strand...
Authors
B.D. Michot, E.A. Meselhe, Ken W. Krauss, Surendra Shrestha, Andrew S. From, Eduardo Patino
Lithobates sylvaticus (wood frog) Lithobates sylvaticus (wood frog)
A single specimen found southwest of Hattiesburg in Timberton (31.270391oN, 89.327675oW; WGS 84). 23 July 2015. Gary, Kat, and Ron Lukens. Verifi ed by Kenneth Krysko, Florida Museum of Natural History (UF-Herpetology 176455). This species has never been recorded from the state of Mississippi before (Dodd 2013. Frogs of the United States and Canada – Volume 2. John Hopkins University...
Authors
Pam Fuller
Are we working towards global research priorities for management and conservation of sea turtles? Are we working towards global research priorities for management and conservation of sea turtles?
In 2010, an international group of 35 sea turtle researchers refined an initial list of more than 200 research questions into 20 metaquestions that were considered key for management and conservation of sea turtles. These were classified under 5 categories: reproductive biology, biogeography, population ecology, threats and conservation strategies. To obtain a picture of how research is...
Authors
A.F. Rees, J. Alfaro-Shigueto, P.C.R. Barata, K.A. Bjorndal, A.B. Bolten, J. Bourjea, A.C. Broderick, L.M. Campbell, L. Cardona, C. Carreras, P. Casale, S.A. Ceriani, P.H. Dutton, T. Eguchi, A. Formia, M.M.P.B. Fuentes, W.J. Fuller, M. Girondot, M.H. Godfrey, M. Hamann, Kristen M. Hart, G.C. Hays, S. Hochscheid, Y. Kaska, M.P. Jensen, J.C. Mangel, J.A. Mortimer, E. Naro-Maciel, C.K.Y. Ng, W.J. Nichols, A.D. Phillott, R.D. Reina, O. Revuelta, G. Schofield, J.A. Seminoff, K. Shanker, J. Tomas, van de Merwe, K.S. Van Houtan, H.B. Vander Zanden, B.P. Wallace, K.R. Wedemeyer-Strombel, Thierry M. Work, B.J. Godley
Overcoming challenges to the recovery of declining amphibian populations in the United States Overcoming challenges to the recovery of declining amphibian populations in the United States
The US Endangered Species Act of 1973 (ESA) affords many potential benefits to species threatened with extinction. However, most at-risk amphibians—one of the most imperiled vertebrate groups—remain unlisted under the provisions of the ESA, and many impediments to recovery exist for those species that have been listed. Of the 35 US amphibian species and distinct population segments (...
Authors
Susan C. Walls, Lianne C. Ball, William J. Barichivich, Kenneth Dodd, Kevin M Enge, Thomas A. Gorman, Katherine M. O’Donnell, John G Palis, Raymond D. Semlitsch
The practice of prediction: What can ecologists learn from applied, ecology-related fields? The practice of prediction: What can ecologists learn from applied, ecology-related fields?
The pervasive influence of human induced global environmental change affects biodiversity across the globe, and there is great uncertainty as to how the biosphere will react on short and longer time scales. To adapt to what the future holds and to manage the impacts of global change, scientists need to predict the expected effects with some confidence and communicate these predictions to...
Authors
Frank Pennekamp, Matthew Adamson, Owen L Petchey, Jean-Christophe Poggiale, Maira Aguiar, Bob W. Kooi, Daniel B. Botkin, Donald L. DeAngelis
Assessment of dreissenid biodeposits as a potential food resource for invasive Asian carp Assessment of dreissenid biodeposits as a potential food resource for invasive Asian carp
Silver carp (Hypophthalmichthys molitrix) and bighead carp (H. nobilis) are poised to invade the Laurentian Great Lakes. Zebra mussels (Dreissena polymorpha) and quagga mussels (D. rostriformis bugensis) have shifted nutrient pathways towards the benthos, partly through deposition of feces and rejected food particles called biodeposits. When biodeposit material was fed to bighead and...
Authors
Karl R. Anderson, Duane Chapman, Cari-Ann Hayer
Concentration, flux, and trend estimates with uncertainty for nutrients, chloride, and total suspended solids in tributaries of Lake Champlain, 1990–2014 Concentration, flux, and trend estimates with uncertainty for nutrients, chloride, and total suspended solids in tributaries of Lake Champlain, 1990–2014
The U.S. Geological Survey, in cooperation with the New England Interstate Water Pollution Control Commission and the Vermont Department of Environmental Conservation, estimated daily and 9-month concentrations and fluxes of total and dissolved phosphorus, total nitrogen, chloride, and total suspended solids from 1990 (or first available date) through 2014 for 18 tributaries of Lake...
Authors
Laura Medalie