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Region 4: Mississippi Basin

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Filter Total Items: 242
Date published: April 12, 2016
Status: Active

USGS Library

The USGS Library, managed by CSAS&L, supports all fundamental scientific research conducted within USGS. It serves both internal and external customers with comprehensive access to literature, data, and information necessary understand USGS mission areas and make critical decisions about how to proceed with research initiatives and investigations in the earth and natural sciences.

Date published: April 11, 2016
Status: Active

Nonindigenous Aquatic Species (NAS) Program

Welcome to the Nonindigenous Aquatic Species (NAS) information resource for the United States Geological Survey. Located at Gainesville, Florida, this site has been established as a central repository for spatially referenced biogeographic accounts of introduced aquatic species. The program provides scientific reports, online/realtime queries, spatial data sets, distribution maps, and general...

Date published: April 8, 2016
Status: Active

Ecology of Greenhouse Gas Emissions from Coastal Wetlands

Wetlands have the potential to absorb large amounts of carbon dioxide via photosynthesis, and flooded soils have low oxygen levels which decrease rates of decomposition to promote the retention of soil carbon. However, the type of greenhouse gases emitted from wetlands varies by wetland type and soil condition. A suite of approaches are being used to assess  fluxes of greenhouses gases, like...

Date published: April 8, 2016
Status: Active

Modeling Tidal Freshwater Forested Wetlands (TFFW) Habitat Changes for Land Management

As tidal freshwater forested wetlands - TFFWs - are influenced by salinty due to salt water intrusion, they may experience changes in plant community composition, growth, and productivity. Models are needed to predict vegetation community change or dieback, as well as changes in carbon sequestration and storage due to changing climate, drought, changes in freshwater discharge, elevated carbon...

Date published: April 8, 2016
Status: Active

Modeling Landscape-Scale Habitat Relations for Landbirds During Migration: Science Support for the Gulf Coast Joint Venture

USGS uses weather surveillance radar data and landscape-scale habitat metrics to model bird-habitat connections along the western coast of the Gulf of Mexico.

Date published: April 8, 2016
Status: Active

Ecology of Tidal Freshwater Forested Wetlands of the Southeastern United States

Tidal freshwater forested wetlands - TFFWs - can be found in the upper intertidal areas of many estuaries and act as a transition between coastal marshes and bottomland hardwood wetlands. However, it is because of their location that makes them vulnerable to sea-level rise, and they are constantly transitioning to different wetland types. USGS addresses how various processes are affected in...

Date published: April 8, 2016
Status: Active

Restoration of Climate Change-Induced Retreat of Tidally Influenced Freshwater Forested Wetlands

Wetlands in river deltas - like the Mississippi River Delta Plain - may be more vulnerable to sea-level rise. Historically, coastal wetlands responded to these changes by increasing surface elevation or migrating up-slope. USGS conducts research to identify the biogeochemical influences on sediment addition in coastal wetland areas. 

Date published: April 8, 2016
Status: Active

RESTORE Science: Inventory of Gulf of Mexico Ecosystem Indicators Using an Ecological Resilience Framework

To effectively manage an ecosystem, resource managers need a way to evaluate its health and ability to function. Metrics that indicate ecosystem condition - or indicators - can be used to help determine how well management strategies work. 

Date published: April 8, 2016
Status: Active

Factors Controlling Resilience and Resistance of Coastal Salt Marshes to Sudden Marsh Dieback

Sudden Marsh Dieback - SMD - has been documented for the past two decades throughout coastal areas of the United States. With these large-scale diebacks comes the loss of ecosystem functions and services. USGS scientsts use field work and greenhouse studies to investigate the factors that control the resilience and resistance of coastal salt marshes to SMD. 

Date published: April 7, 2016
Status: Active

Integrated Modeling of Coastal Processes and Linkages to Management Applications

Coastal wetlands provide valuable ecosystem services such as wave attenuation, surge reduction, carbon sequestration, wastewater treatment, and critical habitats for endangered fish and wildlife species. However, wetland loss threatens the capacity of coastal wetlands to provide these ecosystem services.

Date published: April 7, 2016

Louisiana’s Coastwide Reference Monitoring System (CRMS)

The Coastwise Reference Monitoring System was designed to monitor the effectiveness of restoration actions at individual sites, as well as across the entire Louisiana coast. 

Contacts: Sarai Piazza
Filter Total Items: 4,246
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Year Published: 2019

Thermal variability drives synchronicity of an aquatic insect resource pulse

Spatial heterogeneity in environmental conditions can prolong food availability by desynchronizing the timing of ephemeral, high‐magnitude resource pulses. Spatial patterns of water temperature are highly variable among rivers as determined by both natural and anthropogenic features, but the influence of this variability on freshwater resource...

Anderson, Heidi E.; Alberson, Lindsey K.; Walters, David

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Year Published: 2019

Thermal variability drives synchronicity of an aquatic insect resource pulse

Spatial heterogeneity in environmental conditions can prolong food availability by desynchronizing the timing of ephemeral, high‐magnitude resource pulses. Spatial patterns of water temperature are highly variable among rivers as determined by both natural and anthropogenic features, but the influence of this variability on freshwater resource...

Anderson, Heidi E.; Albertson, Lindsey K.; Walters, David

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Year Published: 2019

Estrogen receptor 1 expression and methylation of Esr1 promoter in mouse fetal prostate mesenchymal cells induced by gestational exposure to bisphenol A or ethinylestradiol

Fetal/neonatal environmental estrogen exposures alter developmental programing of the prostate gland causing onset of diseases later in life. We have previously shown in vitro that exposures to 17β-estradiol (E2) and the endocrine disrupting chemical bisphenol A, at concentrations relevant to human exposure, cause an elevation of...

Bhandari, Ramji K.; Taylor, Julia A.; Sommerfeld-Sager, Jennifer; Tillitt, Donald E.; Ricke, William A.; vom Saal, Frederick S.

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Year Published: 2019

Enhancing reproductive assessments of the Florida manatee Trichechus manatus latirostris by establishing optimal time period and inhibin B baseline concentrations

The Florida manatee Trichechus manatus latirostris occupies coastal and riverine habitats that may influence the species’ endogenous biological rhythms, including its reproductive potential. Inhibin B provides a biomarker of gonadal function and reproductive potential in humans and other eutherian mammals. This study examined the...

Wetzel, Dana L; Reynolds, John Elliot; Bonde, Robert; Schloesser, Ryan W; Schwierzke-Wade, Leslie; Roudebush, William E

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Year Published: 2019

Urban stormwater: An overlooked pathway of extensive mixed contaminants to surface and groundwaters in the United States

Increasing global reliance on stormwater control measures to reduce discharge to surface water, increase groundwater recharge, and minimize contaminant delivery to receiving waterbodies necessitates improved understanding of stormwater-contaminant profiles. A multi-agency study of organic and inorganic chemicals in urban stormwater from 50 runoff...

Masoner, Jason R.; Kolpin, Dana W.; Cozzarelli, Isabelle M.; Barber, Larry B.; Burden, D.S.; Foreman, William T.; Forshay, Kenneth J.; Furlong, Edward; Groves, Justin F.; Hladik, Michelle; Hopton, Matthew E.; Jaeschke, Jeanne B.; Keefe, Steffanie H.; Krabbenhoft, David; Lowrance , Richard; Romanok, Kristin; Rus, David L.; Selbig, William R.; Williams, Brad; Bradley, Paul

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Year Published: 2019

Incorporating uncertainty and risk into decision making to reduce nitrogen inputs to impaired waters

This article aims to understand decision making under uncertainty and risk, with a case study on Cape Cod, Massachusetts. Decision makers need to consider imperfect information on the cost and effectiveness of advanced nitrogen-removing on-site wastewater treatment systems as options to mitigate water quality degradation. Research included...

Martin, David M.; Johnson, Fred

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Year Published: 2019

Flood-inundation maps for Joachim Creek, De Soto, Missouri, 2018

Digital flood-inundation maps for a 6.7-mile reach of Joachim Creek, De Soto, Missouri, were created by the U.S. Geological Survey (USGS) in cooperation with the city of De Soto and Jefferson County, Missouri. The flood-inundation maps, which can be accessed through the USGS Flood Inundation Mapping Program website at https://www.usgs.gov/mission-...

Heimann, David C.; Voss, Jonathan D.; Rydlund, Jr., Paul H.
Heimann, D.C., Voss, J.D., and Rydlund, P.H., Jr., 2019, Flood-inundation maps for Joachim Creek, De Soto, Missouri, 2018: U.S. Geological Survey Scientific Investigations Report 2019–5068, 10 p., https://doi.org/10.3133/sir20195068.

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Year Published: 2019

A generically parameterized model of lake eutrophication (GPLake) that links field-, lab- and model-based knowledge

Worldwide, eutrophication is threatening lake ecosystems. To support lake management numerous eutrophication models have been developed. Diverse research questions in a wide range of lake ecosystems are addressed by these models. The established models are based on three key approaches: the empirical approach that employs field surveys, the...

Chang, Manqi; Teurlincx, Sven; DeAngelis, Donald L.; Janse, Jan H.; Troost, Tineke A.; van Wijk, Dianneke; Mooij, Wolf M.; Janssen, Annette B. G.

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Year Published: 2019

Immediate effects of hurricanes on a diverse coral/mangrove ecosystem in the U.S. Virgin Islands and the potential for recovery

Hurricanes Irma and Maria, two powerful storms that hit the U.S. Virgin Islands less than 2 weeks apart in September 2017, caused extensive damage to the natural resources on St. John. Damage was particularly severe in a unique mangrove/coral ecosystem in three bays within Virgin Islands Coral Reef National Monument, a National Park Service marine...

Rogers, Caroline

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Year Published: 2019

Patterns of resource allocation in a coastal marsh plant (Schoenoplectus americanus) along a sediment-addition gradient

Reductions in sediment delivery to coastal marshes increase their vulnerability to relative sea-level rise. Sediment pulses from storm events and commercial dredge-spray operations (e.g., beneficial use) represent increasingly important sediment sources to otherwise sediment-deprived marshes. These sediments can stimulate plant growth by providing...

Temple, Nigel A.; Grace, James B.; Cherry, Julia A

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Year Published: 2019

Life history, genetics, range expansion and new frontiers of the lionfish (Pterois volitans, Perciformes: Pteroidae) in Latin America

Pterois volitans (lionfish) is a midsize predatory fish commonly found in waters of the western Pacific and Indian Ocean. The species was first documented in Dania Beach, Florida (northwestern Caribbean) in 1985. Since that time the species has expanded its range rapidly to the Northwestern Atlantic Ocean, Gulf of Mexico, and Caribbean Sea....

Díaz-Ferguson, Edgardo; Hunter, Margaret

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Year Published: 2019

Mapping crop residue by combining Landsat and WorldView-3 satellite imagery

A unique, multi-tiered approach was applied to map crop-residue cover on the Eastern Shore of the Chesapeake Bay, USA. Field measurements of crop-residue cover were used to calibrate residue mapping using shortwave infrared (SWIR) indices derived from WorldView-3 imagery for an 8-km x 8-km footprint. The resulting map was then used to calibrate...

Hively, W. Dean; Shermeyer, Jacob; Lamb, Brian T.; Daughtry, Craig S.T.; Quemada, Miguel; Keppler, Jason

Filter Total Items: 227
Image: Big Sioux River at Akron, Iowa, 2010
March 16, 2010

Big Sioux River at Akron, Iowa, 2010

U.S. Geological Survey hydrologic technician measuring streamflow at the Big Sioux River at Arkon, Iowa, on March 17, 2010, during flooding conditions.

Image: Big Sioux River at Akron, Iowa, 2010
March 16, 2010

Big Sioux River at Akron, Iowa, 2010

Flooding conditions at USGS streamgage 06485500, Big Sioux River at Arkon, Iowa, on March 17, 2010. Daily mean streamflow on this date was more than 30,000 cubic feet per second.

Highest stream mycotoxin concentrations were observed during spring snowmelt conditions in agricultural settings
January 2, 2010

Stream Mycotoxin Concentrations were Highest During Spring Snowmelt

Highest stream mycotoxin concentrations were observed during spring snowmelt conditions in agricultural settings such as pictured in this Iowa stream.

Baseflow measurements of field parameters (dissolved oxygen, water temperature, specific conductance, and pH)
September 14, 2009

Baseflow measurements of field parameters

The team of USGS scientists collected stream water samples before and after rainfall events for this study. In this photo a USGS scientist is taking measurements of field parameters (dissolved oxygen, water temperature, specific conductance, and pH) from New York Branch, Iowa, at low flow (baseflow) conditions.

video thumbnail: Effects of Sea-Level Rise on Coastal Wetlands in the Mississippi Delta
March 30, 2009

Effects of Sea-Level Rise on Coastal Wetlands in the Mississippi Delta

This video describes research being conducted by Dr. Karen McKee, USGS Research Ecologist, and her university partner, Dr. Julia Cherry. Their goal is to better understand the effects of sea-level rise and other global change factors on coastal wetlands in the Mississippi River Delta. This region contains over 40% of the U.S. wetlands in the lower 48 states These wetlands

video thumbnail: The Mississippi embayment — Where Does the Water Come From?
January 6, 2009

The Mississippi embayment — Where Does the Water Come From?

As the animation begins, the land surface of the Mississippi embayment fades away to reveal underground geologic formations (shown as shades of blue, brown, and gray surfaces). A slice deep into the earth cuts off the eastern half of the embayment so we can peer into the formations (aquifers) beneath the surface. The lower portion of different colored water wells (orange,

video thumbnail: Simulated groundwater declines in Central Arkansas
January 6, 2009

Simulated groundwater declines in Central Arkansas

A groundwater-flow model of the Mississippi embayment was used to evaluate changes in water-level altitudes after the addition of wells that simulate potential future pumping from the Sparta aquifer in the Bayou Meto-Grand Prairie area of eastern Arkansas (shown within the black outline) for the 30-year period from 2007 through 2037. The animation portrays the time-lapse

video thumbnail: The Mississippi embayment — a look underground
December 11, 2008

The Mississippi embayment — a look underground

Water, oil, and gas wells (shown as green lines) are drilled to hundreds or thousands of feet below land surface in an area known as the Mississippi embayment. Information gathered from these wells was used to create a 3D computer model of underground formations. Many of these formations (shown as shades of grey, blue, brown, or tan surfaces) consist of layers of sand and

Image: WRP Morehouse Parish, Louisiana
November 14, 2008

WRP Morehouse Parish, Louisiana

Wetlands Reserve Program site in Morehouse Parish, Louisiana.  Green tree frogs rest on a Wetlands Reserve Program easement boundary sign in Morehouse Parish, Louisiana.

Midwest farm landscape
September 19, 2008

Farm in Iowa with silos

This farm in Iowa sits amid a field of corn.  USGS researches the effects of agricultural use of fertilizers, pesticides, and other chemicals on surface-water and groundwater quality.

Farm in Iowa in morning mist
September 19, 2008

Farm in Iowa in morning mist amid cornfield

Iowa farm in a cornfield in the early morning mist.  USGS research investigates the effects of agricultural use of fertilizers, pesticides, and other chemicals in the quality of surface water and groundwater.

Image: Wind Energy Farm in Northern Iowa
July 31, 2008

Wind Energy Farm in Northern Iowa

Iowa State Coop student Able Robles found himself amongst miles and miles of windfarms along the Northern Iowa highways. Wind Energy Facilities are becoming commonplace in places like Iowa, where topography and existing transmission lines are favorable for development of this form of renewable energy. Ongoing research at Iowa State University can provide information on

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Filter Total Items: 244
USGS
October 12, 2006

Scientists from the U.S. Geological Survey (USGS) released new data that illustrate the arrival of the massive dome of flood water that inundated much of southwest coastal Louisiana just before, during and after landfall of Hurricane Rita last fall.

USGS science for a changing world logo
October 12, 2006

Scientists from the U.S. Geological Survey (USGS) released new data that illustrate the arrival of the massive dome of flood water that inundated much of southwest coastal Louisiana just before, during and after landfall of Hurricane Rita last fall. 

USGS
October 3, 2006

A new peer-reviewed analysis of land change data from the U.S. Geological Survey’s National Wetlands Research Center indicates that 217 square miles of Louisiana’s coastal lands were transformed to water after Hurricanes Katrina and Rita. 

USGS science for a changing world logo
October 3, 2006

A new peer-reviewed analysis of land change data from the U.S. Geological Survey’s National Wetlands Research Center indicates that 217 square miles of Louisiana’s coastal lands were transformed to water after Hurricanes Katrina and Rita. 

USGS
September 27, 2006

A team of 45 U.S. Geological Survey scientists has received a 2006 Service to America Medal for their search and rescue work in the aftermath of Hurricane Katrina.

The scientists, led by Thomas Casadevall, USGS regional director in Denver, Colo., are from the USGS National Wetlands Research Center in Lafayette, La., and the USGS Louisiana Water Science Center in Baton Rouge, La.

USGS science for a changing world logo
September 7, 2006

The U.S. Geological Survey (USGS), in cooperation with the City of Kansas City, Missouri Water services Department, today released a report detailing the detection of prescription drugs, household and commercial cleaning compounds, pesticides and other chemicals in the Blue River Basin, situated in Missouri and Kansas.

USGS
September 7, 2006

The U.S. Geological Survey (USGS), in cooperation with the City of Kansas City, Missouri Water services Department, today released a report detailing the detection of prescription drugs, household and commercial cleaning compounds, pesticides and other chemicals in the Blue River Basin, situated in Missouri and Kansas.

USGS
September 6, 2006

How good (or bad) is the water quality in Blue River and Brush Creek?

The answer depends on when and where you are in the basin. Results from the most comprehensive water-quality study to date will be unveiled Thursday, Sept. 7, by scientists from the U.S. Geological Survey (USGS) and officials from the Kansas City, Mo. Water Services Department.

USGS science for a changing world logo
August 8, 2006

A report published by the U.S. Geological Survey (USGS) contains a regional map and an associated database that inventory 36 locations of reported natural asbestos and fibrous amphibole occurrences in the central United States.

USGS
June 5, 2006

Today, June 5, 2006, the U.S. Geological Survey (USGS) announces the recipients of the third year of the Mineral Resources External Research Program, a grant and/or cooperative agreement opportunity designed to support minerals research. 

USGS
June 1, 2006

As another potentially busy hurricane season approaches, U.S. Geological Survey (USGS) scientists are sharing data and photos with the public to stress the importance of evacuation and storm preparedness.

USGS
November 9, 2005

In response to public concern for the water quality of Lake Pontchartrain following Hurricane Katrina, the U.S. Geological Survey (USGS), in collaboration with the Louisiana Department of Environmental Quality (DEQ), U.S. Environmental Protection Agency (EPA)...