Unified Interior Regions

Region 4: Mississippi Basin

Regions L2 Landing Page Tabs

Filter Total Items: 239
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
Status: Active

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
Date published: April 7, 2016
Status: Active

Influence of Sea-Level Rise on Wetland Vegetation Community Structure, Primary Productivity, Organic Matter Decomposition and Carbon Storage

This study will employ a space for time substitution to show long-term effects of rising sea-level and increasing salinity on vegetation community structure, primary production and decomposition. Productivity and decomposition rates will be estimated for four wetland plant community types defined by salinity zones and dominant plant species. 

Filter Total Items: 4,622
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Year Published: 2020

An analysis of streamflow trends in the southern and southeastern US from 1950-2015

In this article, the mean daily streamflow at 139 streamflow-gaging stations (sites) in the southern and southeastern United States are analyzed for spatial and temporal patterns. One hundred and thirty-nine individual time-series of mean daily streamflow were reduced to five aggregated time series of Z scores for clusters of sites with similar...

Rodgers, Kirk D.; Roland II, Victor L.; Hoos, Anne B.; Crowley-Ornelas, Elena; Knight, Rodney

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Year Published: 2020

Predicted pH of groundwater in the Mississippi River Valley alluvial and Claiborne aquifers, south-central United States

Regional aquifers in the Mississippi embayment are the principal sources of water used for public and domestic supply, irrigation, and industrial uses throughout the region. An understanding of how water quality varies spatially, temporally, and with depth are critical aspects to ensuring long-term sustainable use of these resources. A boosted...

Kingsbury, James A.; Knierim, Katherine J.; Haugh, Connor J.
Kingsbury, J.A., Knierim, K.J., and Haugh, C.J., 2020, Predicted pH of groundwater in the Mississippi River Valley alluvial and Claiborne aquifers, South-Central United States: U.S. Geological Survey Scientific Investigations Map 3465, 1 sheet, https://doi.org/10.3133/sim3465.

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Year Published: 2020

Terrestrial ecological risk analysis via dietary exposure at uranium mine sites in the Grand Canyon watershed (Arizona, USA)

The U.S. Department of the Interior recently included uranium (U) on a list of mineral commodities that are considered critical to economic and national security. The uses of U for commercial and residential energy production, defense applications, medical device technologies, and energy generation for space vehicles and satellites are known, but...

Hinck, Jo Ellen; Cleveland, Danielle; Sample, Bradley E.

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Year Published: 2020

Stable isotope dynamics of herbivorous reef fishes and their ectoparasites

Acanthurids (surgeonfishes) are an abundant and diverse group of herbivorous fishes on coral reefs. While their contribution to trophic linkages and dynamics in coral reef systems has received considerable attention, the role of linkages involving their parasites has not. As both consumers of fish tissue and prey to microcarnivores, external...

Jenkins, William; Demopoulos, Amanda; Nicholson, Matthew C.; Sikkel, Paul C.

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Year Published: 2020

Identifying turbulence features hindering swimming capabilities of grass carp larvae (Ctenopharyngodon idella) through submerged vegetation

Aquatic vegetation can provide habitat and refuge for a variety of species in streams. However, the flow features generated by submerged patches of vegetation can also pose a challenge for fish larvae. We conducted a series of experiments with live grass carp larvae (starting ∼50 h post hatch) in a laboratory racetrack flume, using a submerged...

Tinoco, Rafael O.; Prada, Andres F.; George, Amy E.; Stahlschmidt, Benjamin H.; Jackson, P. Ryan; Chapman, Duane C.

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Year Published: 2020

Development and testing of species-specific quantitative PCR assays for environmental DNA applications

New, non-invasive methods for detecting and monitoring species presence are being developed to aid in fisheries and wildlife conservation management. The use of environmental DNA (eDNA) samples for detecting macrobiota is one such group of methods that is rapidly becoming popular and being implemented in national management programs. Here we focus...

Klymus, Katy E.; Ruiz Ramos, Dannise Vannesa; Thompson, Nathan; Richter, Catherine A.

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Year Published: 2020

Council monitoring and assessment program (CMAP): A framework for using the monitoring program inventory to conduct gap assessments for the Gulf of Mexico Region

Executive Summary Under the Resources and Ecosystem Sustainability, Tourist Opportunities, and Revived Economies of the Gulf Coast States Act of 2012 (RESTORE Act), the Gulf Coast Ecosystem Restoration Council (RESTORE Council or Council) is required to report on the progress of funded projects and programs. Systematic monitoring of restoration at...

Bosch, Julie; Burkart, Heidi B; Chivoiu, Bogdan; Clark, Randy; Clement, Chris; Enwright, Nicholas; Giordano, Steve; Jeffrey, Chris; Johnson, Ed; Hart, Rheannon; Hile, Sarah D; Howell, Jacob S; Laurenzano, Claudia; Lee, Michael; McCloskey, Terrance; McTigue, Terry; Meyers, Michelle B; Miller, Katie E; Mize, Scott; Monaco, Mark E.; Owen, Kevin; Rebich, Richard; Rendon, Samuel H.; Robertson, Ali; Sample, Thomas; Sanks, Kelly Marie; Steyer, Gregory; Suir, Kevin; Swarzenski, Christopher M.; Thurman, Hana Rose

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Year Published: 2020

Assessment of burrowing behavior of freshwater juvenile mussels in sediment

Standard laboratory sediment toxicity methods have been adapted for conducting toxicity tests with juvenile freshwater mussels. However, studies looking at juvenile mussel burrowing behavior at the water-sediment interface are limited. Juvenile mussels burrow in sediment for the first 0 to 4 yr of life but also may inhabit the sediment-water...

Kemble, Nile E.; Besser, John M.; Steevens, Jeffery; Hughes, Jamie P.

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Year Published: 2020

Topographic, soil, and climate drivers of drought sensitivity in forests and shrublands of the Pacific Northwest, USA

Climate change is anticipated to increase the frequency and intensity of droughts, with major impacts to ecosystems globally. Broad-scale assessments of vegetation responses to drought are needed to anticipate, manage, and potentially mitigate climate-change effects on ecosystems. We quantified the drought sensitivity of vegetation in the Pacific...

Cartwright, Jennifer M.; Littlefield, Caitlin E; Michalak, Julia; Lawler, Joshua J.; Dobrowski, Solomon

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Year Published: 2020

Detecting cover crop end-of-season using VENµS and sentinel-2 satellite imagery

Cover crops are planted during the off-season to protect the soil and improve watershed management. The ability to map cover crop termination dates over agricultural landscapes is essential for quantifying conservation practice implementation, and enabling estimation of biomass accumulation during the active cover period. Remote sensing detection...

Gao, Feng; Anderson, Martha; Hively, W. Dean

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Year Published: 2020

Double exposure and dynamic vulnerability: Assessing economic well-being, ecological change and the development of the oil and gas industry in coastal Louisiana

The oil and gas industry has been a powerful driver of economic change in coastal Louisiana for the latter half of the 20th century and into the 21st. Yet, the overall impact of the industry on the economic well-being of host communities is varied, both spatially and temporally. While the majority of Louisiana’s oil and gas production now occurs...

Hemmerling, Scott; Carruthers, Tim J.B.; Hijuelos, Ann; Bienn, Harris C.

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Year Published: 2020

Larval diet of the rare caddisfly Glyphopsyche missouri (Trichoptera: Limnephilidae) in Missouri, USA

No abstract available.

Rhodes, Russell G.; Poulton, Barry C.; Mabee, William R.; Bowles, David E.

Filter Total Items: 216
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.

USGS streamflow-gaging station 07056000, Buffalo River near St. Joe, Arkansas
March 19, 2008

Measuring streamflow with an acoustic doppler current profiler

B.K. Martin, hydrologic technician in the Little Rock office of the USGS Lower Mississippi-Gulf Water Science Center, measuring streamflow with an acoustic doppler current profiler during flood of March 19, 2008, at USGS streamflow-gaging station 07056000, Buffalo River near St. Joe, Arkansas. Photograph by W.E. Baldwin, USGS Lower Mississippi-Gulf Water Science Center.

Flood of March 19, 2008, Buffalo River near St. Joe, Ark.
March 19, 2008

Flood of March 19, 2008 at Buffalo River, Ark.

B.K. Martin, hydrologic technician in the Little Rock office of the USGS Lower Mississippi-Gulf Water Science Center, measuring streamflow with an acoustic doppler current profiler during flood of March 19, 2008, at USGS streamflow-gaging station 07056000, Buffalo River near St. Joe, Arkansas. Photograph by W.E. Baldwin, USGS Lower Mississippi-Gulf Water Science Center.

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Flood at White River at Calico Rock, Arkansas
March 19, 2008

White River at Calico Rock, Arkansas, during flood of March 19, 2008

White River at Calico Rock, Arkansas, during flood of March 19, 2008. Photograph by Daniel M. Wagner, U.S. Geological Survey.

Dauphin Island, Alabama, map views
December 31, 2005

Dauphin Island, Alabama, map views

Dauphin Island, Alabama. Map views of post-storm difference grids for Hurricanes Ivan (A) and Katrina (B), and vertical photography of the same location (C). The lidar images show elevation gains (green) and losses (red).

Before and after photos showing destroyed pier house and antebellum home
December 31, 2005

Before and after photos showing destroyed pier house and classic home

In the top image, taken in 1998, notice the pier, pier house, and the antebellum house. The bottom image shows the same location on August 31, 2005, two days after Hurricane Katrina made landfall. This photo shows the complete destruction of these landmarks.

Photo sets of Waveland, Mississippi, pre- and post-Katrina
December 31, 2005

Photo sets of Waveland, Mississippi, pre- and post-Katrina

The top image was taken off the coast of Bay St. Louis, Mississippi, in July 1998 by researchers at the University of New Orleans. In this image, notice the large multi-story houses, some of which are built on stilts to protect the homes from flooding. The bottom image shows the same location on August 31, 2005, two days after landfall of Hurricane Katrina. The storm surge

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Photo sets of Waveland, Mississippi, pre- and post-Katrina
December 31, 2005

Photo sets of Waveland, Mississippi, pre- and post-Katrina

The top image, taken off the coast of Waveland, Mississippi, in July 1998, shows several large oceanfront homes, and thick wooded vegetation bordering the sandy beach. The bottom image shows the same location on August 31, 2005, two days after landfall of Hurricane Katrina. All of the houses have been destroyed, and the tennis court behind the house on the far right is no

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Filter Total Items: 255
USGS
December 18, 2008

U.S. Geological Survey Deputy Director Robert Doyle has been selected as a Distinguished recipient of the Presidential Rank Award, a prestigious award that commends outstanding leadership and long-term accomplishments.

USGS
September 12, 2008

New maps that help forecast possible impacts and damages to coastal communities from Hurricane Ike can be accessed online.http://coastal.er.usgs.gov/hurricanes/ike/ .

USGS
August 29, 2008

Real-time flooding and storm surge information is available as Tropical Storm Gustav approaches the Gulf Coast by visiting the interactive US Geological Survey (USGS) Water Hazards Map.

USGS
August 28, 2008

U.S. Geological Survey (USGS) scientists will be installing rapidly-deployable mobile gages and storm-surge sensors to prepare for Tropical Storm Gustav.

USGS
June 12, 2008

Today the U.S. Geological Survey is installing a temporary streamgage in downtown Cedar Rapids until the permanent streamgage can be restored. Transmission of the information from the streamgage was abruptly interrupted last night when power to the downtown Cedar Rapids area was cut off because of safety concerns due to the flooding and the backup system failed. 

USGS
May 1, 2008

The largest flood on the lower Mississippi River since 1973 was measured on April 22 in Vicksburg, Mississippi by the U.S. Geological Survey (USGS), in cooperation with the U.S. Army Corps of Engineers.

USGS
April 21, 2008

Partners in the Sparta Aquifer Recovery Initiative in southern Arkansas and northern Louisiana were recognized with the Department of the Interior's Cooperative Conservation Award today.

USGS
January 29, 2008

Nine states in the Mississippi River Basin contribute the majority of nutrients to the Northern Gulf of Mexico, threatening the economic and ecological health of one of the nation's largest and most productive fisheries.

USGS
January 24, 2008

The overabundance of nutrients in the Gulf has resulted in a zone of low dissolved oxygen, or hypoxia, which can cause stress and death in bottom-dwelling organisms, threatening the economic and ecological health of the one of the nation's most productive fisheries.

USGS
June 25, 2007

Watch history in action as U.S. Geological Survey (USGS) scientists share the secrets of sampling for metals in water with the Indian Tribes from Oklahoma, New Mexico, Louisiana, Texas, and Arkansas U.S. Environmental Protection Agency (USEPA), Region VI.