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Read publications and other informational products to learn more about USGS science occurring in the Mississippi Basin.

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Bayesian data analysis in population ecology: motivations, methods, and benefits Bayesian data analysis in population ecology: motivations, methods, and benefits

During the 20th century ecologists largely relied on the frequentist system of inference for the analysis of their data. However, in the past few decades ecologists have become increasingly interested in the use of Bayesian methods of data analysis. In this article I provide guidance to ecologists who would like to decide whether Bayesian methods can be used to improve their conclusions...
Authors
Robert Dorazio

Geophysical investigation of the pressure field produced by water guns at a pond site in La Crosse, Wisconsin Geophysical investigation of the pressure field produced by water guns at a pond site in La Crosse, Wisconsin

Three different geophysical sensor types were used to characterize the underwater pressure waves generated by the underwater firing of a seismic water gun and their suitability for establishing a pressure barrier to potentially direct or prevent the movement of the Asian carps. The sensors used to collect the seismic information were blast rated hydrophones and underwater blast sensors...
Authors
Ryan F. Adams, William S. Morrow

Does natural variation in diversity affect biotic resistance? Does natural variation in diversity affect biotic resistance?

Notice This publication has been retracted. See the retraction notice.
Authors
Susan Harrison, Howard Cornell, James B. Grace

Demersal fish distribution and habitat use within and near Baltimore and Norfolk Canyons, U.S. Middle Atlantic Slope Demersal fish distribution and habitat use within and near Baltimore and Norfolk Canyons, U.S. Middle Atlantic Slope

Numerous submarine canyons along the United States middle Atlantic continental margin support enhanced productivity, diverse and unique habitats, active fisheries, and are vulnerable to various anthropogenic disturbances. During two cruises (15 Aug–2 Oct 2012 and 30 Apr–27 May 2013), Baltimore and Norfolk canyons and nearby areas (including two cold seeps) were intensively surveyed to...
Authors
Steve W. Ross, Mike Rhode, Andrea M. Quattrini

Defining conservation targets on a landscape-scale Defining conservation targets on a landscape-scale

Conservation planning, the process of deciding how to protect, conserve, enhance and(or) minimize loss of natural and cultural resources, is a fundamental process to achieve conservation success in a time of rapid environmental change. Conservation targets, the measurable expressions of desired resource conditions, are an important tool in biological planning to achieve effective...
Authors
A.M. Benscoter, Stephanie S. Romanach, Laura A. Brandt

Prediction of plant vulnerability to salinity increase in a coastal ecosystem by stable isotopic composition (δ18O) of plant stem water: a model study Prediction of plant vulnerability to salinity increase in a coastal ecosystem by stable isotopic composition (δ18O) of plant stem water: a model study

Sea level rise and the subsequent intrusion of saline seawater can result in an increase in soil salinity, and potentially cause coastal salinity-intolerant vegetation (for example, hardwood hammocks or pines) to be replaced by salinity-tolerant vegetation (for example, mangroves or salt marshes). Although the vegetation shifts can be easily monitored by satellite imagery, it is hard to...
Authors
Lu Zhai, Jiang Jiang, Donald L. DeAngelis, Leonel d.S.L Sternberg

Evaluation of the toxicity of sediments from the Anniston PCB Site to the mussel Lampsilis siliquoidea Evaluation of the toxicity of sediments from the Anniston PCB Site to the mussel Lampsilis siliquoidea

The Anniston Polychlorinated Biphenyl (PCB) Site is located in the vicinity of the municipality of Anniston in Calhoun County, in the north-eastern portion of Alabama. Although there are a variety of land-use activities within the Choccolocco Creek watershed, environmental concerns in the area have focused mainly on releases of PCBs to aquatic and riparian habitats. PCBs were...
Authors
Allison Schein, Jesse A. Sinclair, Donald D. MacDonald, Christopher G. Ingersoll, Nile E. Kemble, James L. Kunz

Beyond just sea-level rise: Considering macroclimatic drivers within coastal wetland vulnerability assessments to climate change Beyond just sea-level rise: Considering macroclimatic drivers within coastal wetland vulnerability assessments to climate change

Due to their position at the land-sea interface, coastal wetlands are vulnerable to many aspects of climate change. However, climate change vulnerability assessments for coastal wetlands generally focus solely on sea-level rise without considering the effects of other facets of climate change. Across the globe and in all ecosystems, macroclimatic drivers (e.g., temperature and rainfall...
Authors
Michael J. Osland, Nicholas M. Enwright, Richard H. Day, Christopher A. Gabler, Camille L. Stagg, James B. Grace

Endocrine-disrupting chemicals and oil and natural gas operations: Potential environmental contamination and recommendations to assess complex environmental mixtures Endocrine-disrupting chemicals and oil and natural gas operations: Potential environmental contamination and recommendations to assess complex environmental mixtures

Background: Hydraulic fracturing technologies, developed over the last 65 years, have only recently been combined with horizontal drilling to unlock oil and gas reserves previously deemed inaccessible. While these technologies have dramatically increased domestic oil and natural gas production, they have also raised concerns for the potential contamination of local water supplies with...
Authors
Christopher D. Kassotis, Donald E. Tillitt, Chung-Ho Lin, Jane A. McElroy, Susan C. Nagel

Value of information and natural resources decision-making Value of information and natural resources decision-making

Though the potential for information to measurably improve management has been highlighted for several decades, in recent years the “value of information” has surfaced with increasing frequency in natural resources. However, the use of this phrase belies the fact that many in natural resources have only a limited understanding about what it actually means, how to measure it, and what to...
Authors
Byron K. Williams, Fred A. Johnson

Variable nutrient stoichiometry (carbon:nitrogen:phosphorus) across trophic levels determines community and ecosystem properties in an oligotrophic mangrove system Variable nutrient stoichiometry (carbon:nitrogen:phosphorus) across trophic levels determines community and ecosystem properties in an oligotrophic mangrove system

Our study investigated the carbon:nitrogen:phosphorus (C:N:P) stoichiometry of mangrove island of the Mesoamerican Barrier Reef (Twin Cays, Belize). The C:N:P of abiotic and biotic components of this oligotrophic ecosystem was measured and served to build networks of nutrient flows for three distinct mangrove forest zones (tall seaward fringing forest, inland dwarf forests and a...
Authors
U. M. Scharler, Robert E. Ulanowicz, M. L. Fogel, M. J. Wooller, M. E. Jacobson-Meyers, C. E. Lovelock, I. C. Feller, M. Frischer, R. Lee, Karen L. McKee, I. C. Romero, J. P. Schmit, C. Shearer

Sea-level rise modeling handbook: Resource guide for coastal land managers, engineers, and scientists Sea-level rise modeling handbook: Resource guide for coastal land managers, engineers, and scientists

Global sea level is rising and may accelerate with continued fossil fuel consumption from industrial and population growth. In 2012, the U.S. Geological Survey conducted more than 30 training and feedback sessions with Federal, State, and nongovernmental organization (NGO) coastal managers and planners across the northern Gulf of Mexico coast to evaluate user needs, potential benefits...
Authors
Thomas W. Doyle, Bogdan Chivoiu, Nicholas M. Enwright
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