Unified Interior Regions

Region 4: Mississippi Basin

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Filter Total Items: 238
Date published: April 25, 2016

Spatial Analysis of Coastal Wetlands Planning, Protection and Restoration Act Projects

As the first federally mandated restoration program, Louisiana enacted the Coastal Wetlands Planning, Protection and Restoration Act (CWPPRA) to address Louisiana’s land loss crisis.

Date published: April 25, 2016
Status: Active

Gulf of Mexico Land Loss Change Assessment: A Cooperative Study with the Bureau of Ocean and Energy Management

Eighty-five percent of the coastal wetland loss in the contiguous United States occurs in the Gulf of Mexico. Documenting and understanding the occurrence of this wetland loss will provide for effective planning, mitigation, and restoration activities.

Date published: April 25, 2016
Status: Active

Hyper-Temporal Land Area Change Rates in Coastal Louisiana from 1973 to 2015

This study analyzes changes in the extent of land in coastal Louisiana by using an average of 81 datasets (multiple dates of satellite data from 1973 to 2014) for summarizing land and water areas.

Date published: April 25, 2016
Status: Active

Supporting Large-scale Biological Monitoring and Modeling through Data Management and Visualization: Coastal Information Management System (CIMS)

The Coastal Protection and Restoration Authority (CPRA) and USGS have partnered to utilize the data management and visualization capacities of the Wetland and Aquatic Research Center’s Advanced Application Team to manage, deliver, and visualize the largest biological dataset maintained in coastal Louisiana.

Date published: April 18, 2016
Status: Active

Long-term Trends in Swamp Tree Growth across Drought and Salinity Gradients along the Northern Gulf Coast

This study will examine the potential effects of climate-change-induced sea level rise, drought and water extraction by examining tree growth patterns across the Gulf Coast, specifically targeting long-term research plots available in the North American Baldcypress Swamp Network (NABCSN) and the Suwannee River.

Date published: April 17, 2016
Status: Active

Mangrove Migration Network

At the poleward marsh-mangrove ecotone, mangrove abundance and coverage is winter temperature-sensitive in that it oscillates in response to the frequency, duration, and/or intensity of extreme winter temperatures. Future winter climate change is expected to facilitate poleward mangrove range expansion at the expense of salt marshes in Texas, Louisiana, and parts of Florida. 

Date published: April 17, 2016
Status: Active

Incorporating Future Change into Current Conservation Planning: Evaluating Wetland Migration along the Gulf of Mexico under Alternative Sea-Level Rise and Urbanization Scenarios

More than half of contiguous U.S. coastal wetlands are located along the Gulf of Mexico coast. These highly-productive wetlands support many ecosystem goods and services and fish and wildlife habitat. Historically, coastal wetlands have adapted to sea-level changes via lateral and vertical movement on the landscape. As sea levels rise in the future, coastal wetlands will adapt and migrate...

Date published: April 17, 2016
Status: Active

Macroclimatic Controls of Coastal Wetland Ecosystem Structure and Function

At the global-scale, macroclimatic drivers govern ecosystem structure and function in tidal saline wetlands (e.g., salt marshes, mangrove forests, salt flats). However, global reviews and models for these ecosystems typically do not directly include climatic drivers. The objective of this research is to examine and forecast the effects of macroclimatic drivers on wetland ecosystem structure...

Date published: April 17, 2016
Status: Active

Mississippi Coastal Improvements Program (MsCIP) - Adaptive Management and Monitoring Planning and Implementation

 The Mississippi barrier islands are dynamic coastal landforms that are the first line of defense between the Gulf of Mexico and the Mississippi mainland coast. These islands are experiencing changes in structure (land area and habitat) and geomorphic processes (erosion and accretion) due to frequent intense storms, relative rise in sea level, and changes in sediment supply. A long-term...

Contacts: Brett A. Patton
Date published: April 17, 2016
Status: Active

Geographical Trends in Ecosystem Function and Biodiversity of Wetlands as a Surrogate for Climate Change

Extreme drought and temperature in the southeastern United States may become more frequent in the future, and any  extreme shifts in climate condition are likely to have effects on wetland ecosystem function. USGS research predicts the effects of climate change by shifts in function and biodiversity across existing  climate gradients in baldcypress swamps. 

Date published: April 16, 2016
Status: Active

Climate Change Effects on Coastal Marsh Foundation Species

Mangrove forests have migrated inland over the past few decades at many locations along the northern Gulf of Mexico coast. This expansion has been attributed to factors associated with climate change, such as increased salinity resulting from sea-level rise and longer intervals between winter freezes, which can kill cold-intolerant mangrove species. 

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Year Published: 2020

Use of environmental DNA to detect grass carp spawning events

The timing and location of spawning events are important data for managers seeking to control invasive grass carp populations. Ichthyoplankton tows for grass carp eggs and larvae can be used to detect spawning events; however, these samples can be highly debris-laden, and are expensive and laborious to process. An alternative method, environmental...

Hayer, Cari-Ann; Bayless, Michael F.; George, Amy E.; Thompson, Nathan; Richter, Catherine A.; Chapman, Duane C.

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Year Published: 2020

Pesticides and their degradates in groundwater reflect past use and current management strategies, Long Island, New York, USA

Long Island, New York, has a mix of urban/suburban to agricultural/horticultural land use and nearly 3 million residents that rely on a sole-source aquifer for drinking water. The analysis of shallow groundwater (<40 m below land surface) collected from 54 monitoring wells across Long Island detected 53 pesticides or pesticide degradates....

Fisher, Irene; Phillips, Patrick J.; Bayraktar, Banu; Chen, Shirley; McCarthy, Brendan A.; Sandstrom, Mark W.

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Year Published: 2020

Mangrove blue carbon in the face of deforestation, climate change, and restoration

Coastal wetlands have disproportionately high carbon densities, known as blue carbon, compared to most terrestrial ecosystems. Mangroves and their blue carbon stocks are at risk globally from land‐use and land‐cover change (LULCC) activities such as aquaculture, alongside biophysical disturbances such as sea‐level rise and cyclones. Global...

Friess, Daniel A.; Krauss, Ken; Taillardat, Pierre; Adame, Maria Fernanda; Yando, Erik S.; Cameron, Clint; Sasmito, Sigit D.; Sillanpaa, Meriadec

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Year Published: 2020

Trait‐based variation in host contribution to pathogen transmission across species and resource supplies

Two key knowledge gaps currently limit the development of more predictive and general models of pathogen transmission: (1) the physiological basis of heterogeneity in host contribution to pathogen transmission (reservoir potential) remains poorly understood, and (2) a general means of integrating the ecological dynamics of host communities has yet...

Welsh, Miranda E; Cronin, James P.; Mitchell, Charles E.

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Year Published: 2020

Moving from decision to action in conservation science

Biodiversity loss is a major threat to the integrity of ecosystems and is projected to worsen, yet the path to successful conservation remains elusive. Decision support frameworks (DSFs) are increasingly applied by resource managers to navigate the complexity, uncertainty, and differing socio-ecological objectives inherent to conservation problems...

Wright, Alexander; Bernard, Riley F; Mosher, Brittany A.; O'Donnell, Katherine; Braunagel, Taylor; DiRenzo, Graziella V.; Fleming, Jillian Elizabeth; Shafer, Charles; Brand, Adrianne B.; Zipkin, Elise F.; Campbell Grant, Evan H.

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Year Published: 2020

Biological effects of hydrocarbon degradation intermediates: Is the total petroleum hydrocarbon analytical method adequate for risk assessment?

In crude oil contaminant plumes, the dissolved organic carbon (DOC) is mainly hydrocarbon degradation intermediates only partly quantified by the diesel range total petroleum hydrocarbon (TPHd) method. To understand potential biological effects of degradation intermediates, we tested three fractions of DOC: (1) solid-phase extract (HLB); (2)...

Bekins, Barbara A.; Brennan, Jennifer; Tillitt, Donald E.; Cozzarelli, Isabelle M.; Illig, Jennifer M.; Martinovich-Weigelt, Dalma

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Year Published: 2020

Batrachochytrium salamandrivorans (Bsal) not detected in an intensive survey of wild North American amphibians

The salamander chytrid fungus (Batrachochytrium salamandrivorans [Bsal]) is causing massive mortality of salamanders in Europe. The potential for spread via international trade into North America and the high diversity of salamanders has catalyzed concern about Bsal in the U.S. Surveillance programs for invading pathogens must initially meet...

Waddle, Hardin; Grear, Daniel A.; Mosher, Brittany; Campbell Grant, Evan H.; Adams, Michael J.; Backlin, Adam R.; Barichivich, William; Brand, Adrianne B.; Bucciarelli, Gary M.; Calhoun, Daniel L.; Chestnut, Tara; Davenport, Jon M.; Dietrich, Andrew E.; Fisher, Robert N.; Glorioso, Brad; Halstead, Brian J.; Hayes, Marc P; Honeycutt, R. Ken; Hossack, Blake R.; Kleeman, Patrick M.; Lemos-Espinal, Julio A; Lorch, Jeffrey M.; Atkinson, Robert W.; Muths, Erin L.; Pearl, Christopher; Richgels, Katherine; Robinson, Charles W; Roth, Mark F.; Rowe, Jennifer; Sadinski, Walter; Sigafus, Brent H.; Stasiak, Iga; Sweet, Samuel; Walls, Christopher B.; Watkins-Colwell, Gregory J; White, C. LeAnn; Williams, Lori A; Winzeler, Megan E.

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Year Published: 2020

Novel molecular resources to facilitate future genetics research on freshwater mussels (Bivalvia: Unionidae)

Molecular data have been an integral tool in the resolution of the evolutionary relationships and systematics of freshwater mussels, despite the limited number of nuclear markers available for Sanger sequencing. To facilitate future studies, we evaluated the phylogenetic informativeness of loci from the recently published anchored hybrid...

Johnson, Nathan; Smith, Chase H.

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Year Published: 2020

Repurposing a hindcast simulation of the 1926 Great Miami Hurricane, south Florida

Hydrodynamic model hindcasts of the surface water and groundwater of the Everglades and the greater Miami, Florida, area were used to simulate hydrology using estimated storm surge height, wind field, and rainfall for the Great Miami Hurricane (GMH), which struck on September 18, 1926. Ranked estimates of losses from hurricanes in inflation-...

Krohn, M. Dennis; Swain, Eric D.; Langtimm, Catherine A.; Obeysekera, Jayantha
Krohn, M.D., Swain, E.D., Langtimm, C.A., and Obeysekera, J., 2020, Repurposing a hindcast simulation of the 1926 Great Miami Hurricane, south Florida: U.S. Geological Survey Open-File Report 2020–1010, 9 p., https://doi.org/10.3133/ofr20201010.

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Year Published: 2020

Distribution of deep-water scleractinian and stylasterid corals across abiotic environmental gradients on three seamounts in the Anegada Passage

In the Caribbean Basin the distribution and diversity patterns of deep-sea scleractinian corals and stylasterid hydrocorals are poorly known compared to their shallow-water relatives. In this study, we examined species distribution and community assembly patterns of scleractinian and stylasterid corals on three high-profile seamounts within the...

Auscavitch, Steven R.; Lunden, Jay J.; Barkman, Alexandria; Quattrini, Andrea; Demopoulos, Amanda; Cordes, Erik E.

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Year Published: 2020

The importance of the Northeastern Gulf of Mexico to foraging loggerhead sea turtles

Identification of high-use foraging sites where imperiled sea turtles are resident remains a globally-recognized conservation priority. In the biodiverse Gulf of Mexico (GoM), recent telemetry studies highlighted post-nesting foraging sites for federally threatened loggerhead turtles (Caretta caretta). Our aim here was to discern loggerhead use of...

Hart, Kristen M.; Lamont, Margaret M.; Iverson, Autumn; Smith, Brian

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Year Published: 2020

Evaluation of acute and chronic toxicity of nickel and zinc to 2 sensitive freshwater benthic invertebrates using refined testing methods

The US Environmental Protection Agency (USEPA) is reviewing the protectiveness of the national ambient water quality criteria (WQC) for nickel (Ni) and zinc (Zn) and compiling toxicity databases to update the WQC. An amphipod (Hyalella azteca) and a unionid mussel (Lampsilis siliquoidea) have shown high sensitivity to Ni and Zn in previous studies...

Wang, Ning; Kunz, James L.; Cleveland, Danielle; Steevens, Jeffery; Hammer, Edward J.; Van Genderen, Eric; Ryan, Adam C.; Schlekat, Christian E.

Filter Total Items: 220
USGS streamflow-gaging station 07069000, Black River at Pocahontas, Arkansas
May 3, 2011

Flood at USGS station 07069000, Black River at Pocahontas, Ark.

Flood of May 3, 2011, at USGS streamflow-gaging station 07069000, Black River at Pocahontas, Arkansas. Photograph by D.M. Wagner, Lower Mississippi-Gulf Water Science Center.

Image: USGS Crews Measure Flooding in Missouri
April 26, 2011

USGS Crews Measure Flooding in Missouri

USGS scientist, Paul Brenden makes a flood measurement on the Big Piney near Big Piney Missouri. 

USGS CoreCast
April 26, 2011

Flooding Hits Along the Mississippi River

2011 had been predicted to be a particularly bad year for flooding in the northern Plains and upper Midwest. Areas along the Red River in North Dakota and Minnesota and the James Rivers in the Dakotas are still experiencing flooding from snowmelt. Now extreme rainfall is causing severe flooding along the Mississippi and Ohio Rivers. Record floods are possible in some areas

07048490, Town Branch tributary at Highway 16 at Fayetteville, Arkansas
April 25, 2011

Flood at 07048490, Town Branch trib. at Highway 16 Fayetteville, Ark.

Flood of April 25, 2011, at U.S. Geological Survey (USGS) streamflow-gaging station 07048490, Town Branch tributary at Highway 16 at Fayetteville, Arkansas. Photograph by D.M. Wagner, Lower Mississippi-Gulf Water Science Center.

Flood at station 07048600, White River near Fayetteville, Arkansas
April 25, 2011

Flood at USGS station 07048600, White River nr. Fayetteville, Arkansas

Flood of April 25, 2011, at USGS streamflow-gaging station 07048600, White River near Fayetteville, Arkansas. Photograph by K.M. Hubbs, Lower Mississippi-Gulf Water Science Center.

Flood of April 25, 2011, at U.S. Geological Survey (USGS) streamflow-gaging station 07048490, Town Branch tributary at Highway 1
April 4, 2011

Flood of April 25, 2011, Town Branch trib., Hwy 16

Flood of April 25, 2011, at U.S. Geological Survey (USGS) streamflow-gaging station 07048490, Town Branch tributary at Highway 16 at Fayetteville, Arkansas. Photograph by D.M. Wagner, Lower Mississippi-Gulf Water Science Center.

SIR 2016–5081

Flood of April 25, 2011, Highway 16 at Fayetteville, Arkansas
April 4, 2011

Flood of April 25, 2011, White River, Ark.

Flood of April 25, 2011, at USGS streamflow-gaging station 07048600, White River near Fayetteville, Arkansas. Photograph by K.M. Hubbs, Lower Mississippi-Gulf Water Science Center.

SIR 2016–5081

video thumbnail: The Mississippi Embayment - Declining Water Levels in a Shallow Aquifer
December 2, 2010

The Mississippi Embayment - Declining Water Levels in a Shallow Aquifer

The USGS recently constructed a computer model of groundwater in the Mississippi embayment. This model was used to simulate the rise or decline of water level in a shallow aquifer. Water from this shallow aquifer is utilized by the agricultural based economy in the area. In the animation, groundwater levels decline more than 100 feet from 1870 to 2007 in some areas of the

video thumbnail: The Mississippi Embayment - Declining Water Levels in a Deep Aquifer
December 2, 2010

The Mississippi Embayment - Declining Water Levels in a Deep Aquifer

The USGS recently constructed a computer model of groundwater in the Mississippi embayment. This model was used to simulate the rise or decline of water level in a deep aquifer. Water from this deep aquifer is utilized to meet the industrial and public supply needs in the area. In the animation, groundwater levels decline more than 400 feet from 1870 to 2007 in some areas

Little Missouri River near Camp Area C at Albert Pike Recreation Area, Arkansas
September 15, 2010

Little Missouri River near Camp Area C at Albert Pike Recreation Area

Little Missouri River near Camp Area C at Albert Pike Recreation Area, Arkansas (photograph by Daniel M. Wagner, U.S. Geological Survey).

Image: WRP St. Landry Parish, Louisiana
July 12, 2010

WRP St. Landry Parish, Louisiana

Wetlands Reserve Program site in St. Landry Parish, Louisiana.  Changes in a local river resulted in the landowner’s fields flooding on a regular basis. The landowner worked through the USDA Natural Resources Conservation Service to restore his fields to their natural wetland state.

Image: Oil Spill Samples Arrive from Louisiana
May 14, 2010

Oil Spill Samples Arrive from Louisiana

On April 20, 2010, the Deepwater Horizon Drilling Platform exploded and sank, causing the largest oil spill yet recorded. Samples from the oil spill were collected by Louisiana USGS scientists Greg Swayze and Charlie Demas and sent for analysis in Menlo Park, CA. The Louisiana samples were discovered on several of Louisiana's barrier islands, including Grand Isle, a large

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Filter Total Items: 253
USGS science for a changing world logo
April 26, 2011

The National Earthquake Prediction Evaluation Council has issued a new report in which independent experts conclude that current USGS estimates for significant earthquake hazards in the New Madrid Seismic Zone—affecting eight central and eastern U.S states—are based on sound science.

USGS science for a changing world logo
April 26, 2011

U.S. Geological Survey field crews are measuring all-time record flooding on the Illinois River in Northwestern Arkansas. 

Twelve USGS streamgages in northern Arkansas have measured the highest flood levels ever recorded. Two out of the 12 sites have long-term streamflow records since 1979.

USGS science for a changing world logo
April 26, 2011

Heavy rainfall of more than 10 inches during the last 24 hours has caused substantial flooding in parts of Southern Missouri. 

Today, there are 19 U.S. Geological Survey scientists out in the field collecting critical streamflow data, which are vital for protection of life, property and the environment. 

USGS science for a changing world logo
April 25, 2011

Heavy rainfall of more than 8 inches in northwestern Arkansas has caused substantial flooding in parts of the White River and Arkansas River Basins.

USGS science for a changing world logo
February 18, 2011

Nearly 60 small and moderate earthquakes struck Arkansas since Feb. 15, 2011, the most recent a magnitude 4.3 earthquake this morning 37 miles away from Little Rock. Many of the earthquakes are large enough to be felt.

USGS science for a changing world logo
February 9, 2011

Earthquakes pose an ongoing hazard to people, buildings, and infrastructure in St. Louis and surrounding areas.

One of the known sources of large earthquakes in the past is the New Madrid seismic zone.

USGS science for a changing world logo
January 14, 2011

Matthew Andersen has been selected as the Deputy Center Director of the U. S. Geological Survey National Wetlands Research Center in Lafayette, La.

The NWRC develops and disseminates scientific information needed for understanding the ecology and value of the Nation's wetlands and for managing and restoring wetland habitats and associated plant and animal communities. 

USGS science for a changing world logo
January 10, 2011

Large wildlife die-off events are fairly common, though they should never be ignored, according to the U.S. Geological Survey scientists whose preliminary tests showed that the bird deaths in Arkansas on New Year’s Eve and those in Louisiana were caused by impact trauma.

USGS
November 30, 2010

Growing corn for biofuels production is having unintended effects on water quality and quantity in northwestern Mississippi.

USGS
November 23, 2010

Phil Turnipseed has been selected as the Director of the U. S. Geological Survey National Wetlands Research Center in Lafayette, La.

USGS
November 17, 2010

Approximately 13 million metric tons of rare earth elements (REE) exist within known deposits in the United States, according to the first-ever nationwide estimate of these elements by the U.S. Geological Survey.

USGS
June 15, 2010

The  Little Missouri River in Southwest Arkansas experienced a flash flood Friday, with waters that rose over 20 feet in just 5 hours, killing 20 people. In response to this severe and unusual flooding the USGS deployed a team of scientists to document and study the flow and height of the floodwater as it coursed down the Little Missouri River and its tributaries.