Unified Interior Regions

Region 4: Mississippi Basin

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Filter Total Items: 238
Date published: January 10, 2018
Status: Active

Science Support for the Mississippi Coastal Improvement Project

Since 2007, the USGS (with NPS and USACE) has been mapping the seafloor and substrate around the Mississippi barrier islands to characterize the near-surface stratigraphy and identify the influence it has on island evolution and fate. 

Contacts: James Flocks
Date published: January 10, 2018
Status: Active

Geologic Evolution of Cat Island, Mississippi

The geologic evolution of Cat Island has been influenced by deltaic, lagoonal/estuarine, tidal, and oceanographic processes, resulting in a complex stratigraphic record.

Date published: December 11, 2017
Status: Active

Use of Remote Sensing Data to Quantify Bird and Bat Distributions and Inform Migratory Bird Conservation Efforts

Three federal wildlife refuge complexes on the upper Texas coast include portions of the Columbia Bottomlands and other forests that are important for migratory birds and possibly bats: Texas Mid-Coast, Trinity River, and Chenier Plain.

Date published: December 11, 2017
Status: Active

Use of Remote Sensing Data to Quantify Bird Distributions and Aid in the Environmental Assessment of Energy Development in the Gulf of Mexico Region

Knowing where migratory birds consistently stop to rest and forage is critical for conservation planning, particularly along the northern and western Gulf where there is increased interest in energy development.

Date published: December 7, 2017
Status: Active

Geologic and Morphologic Evolution of Coastal Margins

A combination of geophysics, sediment sampling, and chronology techniques are used to characterize the regional geomorphologic response of coastal systems to environmental changes.

Date published: December 5, 2017
Status: Completed

Barrier Island Evolution

The Barrier Island Evolution Project addresses a research gap between the short time scale of individual storms (hours to days) and the longer time scales associated with the historic and geologic evolution of the coastal system (decades to millennia).

Date published: December 5, 2017
Status: Active

The Gulf of Mexico Water Dashboard: Cross-Center Collaboration Brings Real-time, USGS Water Data to the Gulf Coast through a Spatially Enabled Mapping Application

The USGS Southeast Regional Office has funded a cross-center collaboration between the Wetland and Aquatic Research Center and the Texas Water Science Center for the development of the Gulf of Mexico Water Dashboard. The objective of this effort is to expand the Texas Water Dashboard platform to include the coastal regions of the five Gulf states: Texas, Louisiana, Mississippi, Alabama, and...

Date published: October 31, 2017
Status: Active

Detecting Differences in Bacterial Metabolism in the Buffalo National River

Each year, the Buffalo National River (BUFF) attracts 1.6 million visitors, many of whom enjoy recreational water activities. Since 2013, a confined animal feeding operation (CAFO) for swine has been operating on Big Creek, a BUFF tributary.

Date published: August 29, 2017

Hydrologist visits 4th-graders at Baton Rouge public school

Where: Westdale Heights Academic Magnet school, Baton Rouge, LA

Background:  Dennis Demcheck has been volunteering at the public school since 2012, discussing bird identification, migration patterns, and drawing birds. The presentation emphasized scientific observation and the importance of accurate data collection.

Partners/Stakeholders: None. Dennis talked to about 75 students...

Date published: August 1, 2017
Status: Active

Pilot Testing and Protocol Development of Apple Snail Suppression at Mandalay National Wildlife Refuge

The maculata apple snail (Pomacea maculata) has invaded many coastal and some inland areas in south Louisiana. Reports have indicated that the freshwater snails have significantly reduced the amount of submerged aquatic vegetation (SAV) and floating leaved vegetation (FLV) available for waterfowl and other wildlife.

Date published: July 10, 2017

Lower Mississippi-Gulf WSC - Baton Rouge Sediment Lab Price List - 2018 Fiscal Year

LOWER MISSISSIPPI-GULF WSC - BATON ROUGE SEDIMENT LAB PRICE LIST - 2018 FISCAL YEAR

2018

FISCAL YEAR

(Effective date will begin with samples received
by the Laboratory after October 1, 2017)

Date published: July 5, 2017

Ozark Plateaus Groundwater Availability Study

The U.S. Geological Survey's Groundwater Resources Program (GWRP) is conducting an assessment of groundwater availability throughout the United States to gain a better understanding of the status of the Nation's groundwater resources and how changes in water use and climate may affect those resources. 

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Contacts: Brian R Clark
Filter Total Items: 4,411
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Year Published: 2020

The utility of zooarchaeological data to guide listing efforts for an imperiled mussel species (Bivalvia: Unionidae: Pleurobema riddellii)

The status of species in freshwater systems shift over time due to natural and anthropogenic causes. Determining the magnitude and cause of these shifts requires a long‐term perspective. This process is complicated when there are also questions about the taxonomic validity of a species. Addressing these issues is important because both can...

Randklev, Charles R.; Wolverton, Steve; Johnson, Nathan; Smith, Chase H.; DuBose, Traci; Robertson, Clint; Conley, Julian

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Year Published: 2020

A new species of freshwater mussel in the genus Popenaias Frierson, 1927, from the Gulf coastal rivers of central Mexico (Bivalvia: Unionida: Unionidae) with comments on the genus

The Gulf coastal drainages of central Mexico are a faunal transition zone between North and South America and harbor a unique assemblage of freshwater mussels (Bivalvia: Unionida). However, little information is available regarding the taxonomy, distribution, and evolutionary history of the Mexican mussel fauna due to limited sampling over the...

Inoue, Kentaro; Cummings, Kevin S.; Tiemann, Jeremy S.; Miller, Thomas D.; Johnson, Nathan; Smith, Chase H.; Randklev, Charles R.

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Year Published: 2020

Salinity, water level, and forest structure contribute to baldcypress (Taxodium distichum) rhizosphere and endosphere community structure

As rising sea levels alter coastal ecosystems, there is a pressing need to examine the effects of saltwater intrusion on coastal communities. Using 16S Illumina profiling, we characterized the communities of baldcypress tree (Taxodium distichum) root endosphere and rhizosphere soil bacteria. Our study utilized established sites along salinity and...

Lumibao, Candice Y; Kimbrough, Elizabeth; Formel, Steven; Day, Richard; From, Andrew; Conner, William H.; Krauss, Ken; Van Bael, Sunshine A

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Year Published: 2020

A comparative phylogeographic approach to facilitate recovery of an imperiled freshwater mussel (Bivalvia: Unionida: Potamilus inflatus)

North American freshwaters are among the world’s most threatened ecosystems, and freshwater mussels are among the most imperiled inhabiting these systems. A critical aspect of conservation biology is delineating patterns of genetic diversity, which can be difficult when a taxon has been extirpated from a significant portion of its historical range...

Smith, Chase H.; Johnson, Nathan

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Year Published: 2020

Wastewater-based epidemiology pilot study to examine drug use in the Western United States

The extent of prescription and illicit drug abuse in geographically isolated rural and micropolitan communities in the intermountain western United States (US) has not been well tracked. The goal of this pilot study was to accurately measure drug dose consumption rates (DCR) between two select populations, normalize the data and compare the DCRs...

Bishop, Nicholas; Jones-Lepp, Tammy; Margetts, Miranda; Sykes, Jordan; Alvarez, David; Keil, Deborah

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Year Published: 2020

Comparative phylogenomics reveal complex evolution of life history strategies in a clade of bivalves with parasitic larvae (Bivalvia: Unionoida: Ambleminae)

Freshwater mussels are a species‐rich group with biodiversity patterns strongly shaped by a life history strategy that includes an obligate parasitic larval stage. In this study, we set out to reconstruct the life history evolution and systematics in a clade of freshwater mussels adapted to parasitizing a molluscivorous host fish. Anchored hybrid...

Smith, Chase H.; Pfeiffer, John M.; Johnson, Nathan

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Year Published: 2020

Preserving connectivity under climate and land-use change: No one-size-fits-all approach for focal species in similar habitats

Habitat connectivity is essential for maintaining populations of wildlife species, especially as climate changes. Knowledge about the fate of existing habitat networks in a changing climate and in light of land-use change is critical for determining which types of conservation actions must be taken to maintain those networks. However, information...

Costanza, Jennifer K.; Watling, James I.; Sutherland, Ron; Belyea, Curtis; Dilkina, Bistra; Cayton, Heather; Bucklin, David N.; Romanach, Stephanie; Haddad, Nick M.

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Year Published: 2020

Using NASA Earth observations and Google Earth Engine to map winter cover crop conservation performance in the Chesapeake Bay watershed

Winter cover crops such as barley, rye, and wheat help to improve soil structure by increasing porosity, aggregate stability, and organic matter, while reducing the loss of agricultural nutrients and sediments into waterways. The environmental performance of cover crops is affected by choice of species, planting date, planting method, nutrient...

Thieme, Alison; Yadav, Sunita; Oddo, Perry C.; Fitz, John M.; McCartney, Sean; King, LeeAnn; Keppler, Jason; McCarty, Gregory W.; Hively, W. Dean

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Year Published: 2020

Beloniformes: Belonidae (Needlefishes) and Hemiramphidae (Halfbeaks)

The order Beloniformes (or Synentognathi) contains two suborders, six families, 37 genera, and about 235 species of atherinomorph fishes (Rosen & Parenti 1981; Collette et al. 1984; Collette 2004). Features common to these fishes include dorsal and anal fins on the rear half of the body, abdominal pelvic fins with six soft rays, no fin spines...

Bruce B. Collette; Walsh, Stephen
Collette, B.B., and Walsh, S.J., 2020, Beloniformes: Belonidae (Needlefishes) and Hemiramphidae (Halfbeaks), Chapter 26, in Warren, M.L., Jr., and Burr, B.M., eds., Freshwater Fishes of North America, v. 2: Characidae to Poeciliidae, p. 449-462: Johns Hopkins University Press, https://jhupbooks.press.jhu.edu/title/freshwater-fishes-north-america/table-of-contents.

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Year Published: 2020

Methods to quality assure, plot, summarize, interpolate, and extend groundwater-level information—Examples for the Mississippi River Valley alluvial aquifer

Large-scale computational investigations of groundwater levels are proposed to accelerate science delivery through a workflow spanning database assembly, statistics, and information synthesis and packaging. A water-availability study of the Mississippi River alluvial plain, and particularly the Mississippi River Valley alluvial aquifer (MRVA), is...

Asquith, William H.; Seanor, Ronald C.; McGuire, Virginia L.; Kress, Wade

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Year Published: 2020

Space use and relative habitat selection for immature green turtles within a Caribbean marine protected area

Background A better understanding of sea turtle spatial ecology is critical for the continued conservation of imperiled sea turtles and their habitats. For resource managers to develop the most effective conservation strategies, it is especially important to examine how turtles use and select for habitats within their developmental foraging...

Griffin, Lucas P; Smith, Brian J.; Cherkiss, Michael; Crowder, Andrew; Pollock, Clayton G; Hillis-Starr, Zandy; Danylchuk, Andy J.; Hart, Kristen

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Year Published: 2020

Urban stream syndrome and contaminant uptake in salamanders of Central Texas

We studied the ecological health of springs experiencing varying levels of urban development to assess impacts to rare endemic salamanders (Eurycea spp.) of Central Texas. We evaluated measures of invertebrate species richness, water quality, and contaminant uptake by salamanders to determine how springs and their inhabitants were being...

Diaz, Peter H.; Orsak, Erik L.; Weckerly, Floyd W.; Montagne, Mike A.; Alvarez, David

Filter Total Items: 217
Pallid sturgeon free embryo at approximately 10 days post-hatch
July 14, 2016

Pallid sturgeon free embryo at approximately 10 days post-hatch

Pallid sturgeon free embryo at approximately 10 days post-hatch, approximately 19-20 mm (about 0.77 of an inch) in length.

Newly hatched pallid sturgeon free embryos.
July 14, 2016

Newly hatched pallid sturgeon free embryos.

Pallid sturgeon free embryos on the day of hatch, approximately 8-9 mm (about 0.33 of an inch) in length.

Pallid sturgeon free embryo at approximately 2 days post-hatch
July 14, 2016

Pallid sturgeon free embryo at approximately 2 days post-hatch

Pallid sturgeon free embryo at approximately 2 days post-hatch, approximately 11-12 mm (about 0.45 of an inch) in length.

Newly discovered cavefish species, the Oaxaca Cave Sleeper
June 24, 2016

Oaxaca Cave Sleeper is a newly discovered species

This Oaxaca Cave Sleeper is one of thirteen specimens collected from a cave beneath a reservoir on Mexico's Tonto River. It lacks eyes, is unpigmented, and has sensory adaptations characteristic of fish that live in total darkness. Thuis is the holotype, the example used to describe and name this newly identified species. Credit: Howard L. Jelks and Stephen J. Walsh, USGS

Laboratory specimen of newly-discovered Oaxaca Cave Sleeper
June 24, 2016

A laboratory specimen shows the cavefish's absence of eyes

A laboratory preparation of a Oaxaca Cave Sleeper specimen shows the absence of eyes in this newly identified cavefish species. Credit: Stephen J. Walsh, USGS

Photo showing a corn farm in northeast Iowa.
June 6, 2016

Farm in northeast Iowa

A corn farm in northeast Iowa. A new USGS report shows that drought periods followed by rainfall caused nitrate levels to increase to the highest ever measured in some Midwest streams during a 2013 study. 

Stan Musial bridge in St. Louis, Missouri
May 26, 2016

Stan Musial bridge in St. Louis, Missouri

Photo of the Stan Musial bridge in St. Louis, Missouri. 

A new assessment of channel bed erosion near 13 highway bridges in the greater St. Louis, Missouri, area is now available in an online report from the U.S. Geological Survey, produced in cooperation with the Missouri Department of Transportation.

View of Old Mans Creek near Iowa City, Iowa
April 30, 2016

View of Old Mans Creek near Iowa City, Iowa

View of Old Mans Creek near Iowa City, Iowa upstream from a bridge used for collecting water-quality samples (USGS Site ID: 05455100). This site was part of the sampling network for the first reconnaissance study to assess

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WRP Natchitoches Parish, Louisiana
April 26, 2016

WRP Natchitoches Parish, Louisiana

Wetlands Reserve Program site in Natchitoches Parish, Louisiana.  Ten years ago, this landowner worked with the USDA Natural Resources Conservation Service through the Wetlands Reserve Program to design and construct this slough as part of a plan to restore this field’s natural wetland hydrology.

WRP Morehouse Parish, Louisiana
April 26, 2016

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.

Filter Total Items: 248
USGS
March 25, 2015

The U.S. Geological Survey’s Southeast Ecological Science Center in Gainesville and the National Wetlands Research Center in Lafayette, Louisiana will merge under the same leadership effective October 1, 2015.

USGS science for a changing world logo
March 24, 2015

Fish exposed to the endocrine-disrupting chemicals bisphenol A (BPA) or 17a-ethinylestradiol (EE2) in a laboratory have been found to pass adverse reproductive effects onto their offspring up to three generations later, according to a new study by the U.S. Geological Survey and the University of Missouri.

Updated 2015 version of Weldon Spring quadrangle with orthoimage turned off
February 18, 2015

Newly released US Topo maps for Missouri now feature selected trails and other substantial updates. The data for the trails is provided to the USGS through a nation-wide “crowdsourcing” project managed by the International Mountain Biking Association (IMBA).

Image: Pallid Sturgeon
January 23, 2015

BOZEMAN – Pallid sturgeon come from a genetic line that has lived on this planet for tens of millions of years; yet it has been decades since anyone has documented any of the enormous fish successfully producing young that survive to adulthood in the upper Missouri River basin.

USGS
December 18, 2014

Secretary of the Interior Sally Jewell announced today that Interior’s South Central Climate Science Center is awarding nearly $550,000 to universities and other partners for research to guide managers of parks, refuges and other cultural and natural resources in planning how to help species and ecosystems adapt to climate change.

USGS
December 18, 2014

Secretary of the Interior Sally Jewell announced today that Interior’s Northeast Climate Science Center (NE CSC) is awarding nearly $700,000 to universities and other partners for research to guide managers of parks, refuges and other cultural and natural resources in planning how to help species and ecosystems adapt to climate change.

USGS
December 18, 2014

Secretary of the Interior Sally Jewell announced today that Interior’s Southeast Climate Science Center is awarding nearly $150,000 to its host university and other partners for research to guide managers of parks, refuges and other cultural and natural resources in planning how to help species and ecosystems adapt to climate change.

USGS
December 18, 2014

Secretary of the Interior Sally Jewell announced today that Interior’s North Central Climate Science Center in Fort Collins, Colorado, is awarding nearly $400,000 to universities and other partners.

Image: Louisiana Black Bear and Cubs
November 19, 2014

The bear species nicknamed “teddy” more than a century ago that inspired the iconic stuffed toy still popular today will likely survive at least another century, according to a new U.S. Geological Survey study. 

USGS
July 30, 2014

Nesting loggerhead sea turtles in the northern Gulf of Mexico feed among areas that were oiled by the 2010 Deepwater Horizon spill and where human activities occur, several of which are known to pose threats to sea turtles, a new U.S Geological study showed.

USGS
July 28, 2014

The U.S. Virgin Islands are now available for structure updates with The National Map Corps crowd-sourcing volunteers