Unified Interior Regions

Region 4: Mississippi Basin

Regions L2 Landing Page Tabs

Filter Total Items: 238
Date published: March 18, 2016
Status: Active

Classifying Coastal Wetland Vegetation Communities with Unsupervised Artificial Neural Networks

Wetlands are often classified by their vegetation, which can help scientists track how these landscapes change over time. USGS turns to unsupervised artificial neural networks to help guide this classification process.

Date published: March 17, 2016
Status: Active

Mapping Oil in Marshes and Its Implications

Remote sensing helps USGS scientists detect and map surface oil in coastal environments.

Date published: March 17, 2016
Status: Active

Optical and Radar Fusion: Mapping Coastal Marsh Dieback

With the help of remote sensing, USGS maps the progression of marsh dieback along the Louisiana coast.

Date published: August 27, 2013

Testing for Agricultural Runoff in the Missouri River - Video

Ride along as USGS scientists Richard Coupe and Joe Schatz sample the Missouri River near Hermann, Missouri. To view the video click here.

Date published: April 21, 2013

Agriculture - A River Runs Through It

Heather Welch, Claire Rose, and Richard Coupe, U.S. Geological Survey scientists involved in the National Water Quality Assessment (NAWQA) Study of Agricultural Chemical Transport (ACT) study, outline agricultural effects on water quality in the Mississippi Delta region. Topics include research results on nutrient modeling using the SPARROW model, environmental effects of biofuel production,...

Date published: April 3, 2013

We've Got A Model - Why Do We Need Data?

Anne Hoos and Ana Garcia discuss why data is important for the USGS nutrient loading model SPARROW. To view the video click here.

Date published: April 3, 2013

Modeling - The Ninth Art - Video

The art and science of SPARROW modeling. The steps of developing the SPARROW model. The other eight arts are: Architecture, Sculpture, Painting, Music, Poetry, Dance, Theater and Cinema. To view the video click here.

Contacts: Anne B Hoos
Date published: April 3, 2013

Results of the ACT Study - Biofuels

Interview by Richard Coupe (U.S. Geological Survey) and Heather Welch -- a scientist involved in the National Water Quality Assessment (NAWQA) Study of Agricultural Chemical Transport (ACT)-- on her research results on environmental effects of biofuel production. To view the video click here.

Date published: April 3, 2013

Results of the ACT Study - Glyphosphate

Richard Coupe (U.S. Geological Survey) summarizes research results of glyphosate and water quality as part of the the National Water Quality Assessment (NAWQA) Study of Agricultural Chemical Transport (ACT). To view the video click here.

Date published: April 1, 2013

Thoughts from ACT Study Farmers - Lawrence Murphy

Claire Rose (USGS) and Richard Coupe (USGS) talk with Lawrence Murphy about farming and Agricultural Chemical Transport Study research done on his farm in the Mississippi Delta. To view the video click here.

Date published: April 1, 2013

Results of the ACT Study - Metolachlor

Interview by Richard Coupe (US Geological Survey) of Claire Rose- a scientist involved in the National Water Quality Assessment (NAWQA) Study of Agricultural Chemical Transport (ACT)on research results of metolachlor transport. To view the video click here.

Filter Total Items: 4,537
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Year Published: 2020

Comparison of SELDM simulated total-phosphorus concentrations with ecological impervious-area criteria

Ecological studies indicate that impervious cover (IC) greater than approximately 5%–20% may have adverse effects on receiving-stream ecology. It is difficult to separate the effects of runoff quality from other effects of urbanization on receiving streams. This study presents the results of a numerical experiment to assess the effects of...

Jeznach, Lillian C.; Granato, Gregory E.

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Year Published: 2020

Characterizing the diverse hydrogeology underlying rivers and estuaries using new floating transient electromagnetic methodology

The hydrogeology below large surface water features such as rivers and estuaries is universally under-informed at the long reach to basin scales (tens of km+). This challenge inhibits the accurate modeling of fresh/saline groundwater interfaces and groundwater/surface water exchange patterns at management-relevant spatial extents. Here we...

Lane, John W.; Briggs, Martin; Maurya, PK; White, Eric A.; Pedersen, JB; Auken, Esben; Terry, Neil; Minsley, Burke J; Kress, Wade; LeBlanc, Denis R.; Adams, Ryan F.; Johnson, Carole D.

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Year Published: 2020

Acris blanchardi (Blanchard's Cricket Frog), Predation

Invertebrates are well-known predators of amphibians with many documented cases of spiders preying upon anurans (reviewed in Toledo 2005. Herpetol. Rev. 36:395–400). Wolf spiders are known to feed on a variety of frogs, including those in the genus Acris (Blackburn et al. 2002. Herpetol. Rev. 33:299). Although typically terrestrial, wolf spiders...

Maldonado, Brittany R.; Glorioso, Brad; Kidder, Raymond P.

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Year Published: 2020

Low-level detection of SFD-causing Ophidiomyces on Burmese Pythons in southwest Florida, with confirmation of the pathogen on co-occurring native snakes

Snake fungal disease (SFD), or ophidiomycosis, is caused by the fungus Ophidiomyces ophiodiicola (Allender et al. 2015; Lorch et al. 2015). SFD is widespread across wild populations in the eastern United States (Lorch et al. 2016) and is known to infect more than 30 species of snake in North America and Europe (Lorch et al. 2016; Franklinos et al...

Glorioso, Brad; Bartoszek, Ian A.; Lorch, Jeffrey M.

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Year Published: 2020

Analysis of movement recursions to detect reproductive events and estimate their fate in central place foragers

Recursive movement patterns have been used to detect behavioral structure within individual movement trajectories in the context of foraging ecology, home-ranging behavior, and predator avoidance. Some animals exhibit movement recursions to locations that are tied to reproductive functions, including nests and dens; while existing literature...

Picardi, Simona; Smith, Brian; Boone, Matthew E.; Frederick, Peter C.; Cecere, Jacopo G.; Rubolini, Diego; Serra, Lorenzo; Pirrello, Simone; Borkhataria, Rena R.; Basille, Mathieu

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Year Published: 2020

Oases of the future? Evaluating springs as potential hydrologic refugia in drying climates

Springs in water-limited landscapes are biodiversity hotspots and keystone ecosystems, disproportionately influencing surrounding landscapes despite their often small areas. Some springs served as evolutionary refugia during previous climate drying, supporting relict species in isolated habitats. Understanding whether springs will provide...

Cartwright, Jennifer M.; Dwire, Kathleen A.; Freed, Zach; Hammer, Samantha J.; McLaughlin, Blair; Misztal, Louise W.; Schenk, Edward J.; Spencer, John R.; Springer, Abraham E.; Stevens, Lawrence E.

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Year Published: 2020

Combining physical and species‐based approaches improves refugia identification

Climate‐change refugia – locations likely to facilitate species persistence under climate change – are increasingly important components of conservation planning. Recent approaches for identifying refugia at broad scales include identifying regions that are projected to experience less severe changes (climatic exposure), that contain a diversity...

Michalak, Julia; Stralberg, Diana; Cartwright, Jennifer M.; Lawler, Joshua J.

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Year Published: 2020

Disturbance refugia within mosaics of forest fire, drought, and insect outbreaks

Disturbance refugia – locations that experience less severe or frequent disturbances than the surrounding landscape – provide a framework to highlight not only where and why these biological legacies persist as adjacent areas change but also the value of those legacies in sustaining biodiversity. Recent studies of disturbance refugia in forest...

Krawchuk, Meg A.; Meigs, Garrett; Cartwright, Jennifer M.; Coop, Jonathan D.; Davis, Raymond J.; Holz, Andres; Kolden, Crystal A.; Meddens, Arjan J.H.

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Year Published: 2020

Methods of collection and quality assessment of arsenic data in well-water supplies in Maine, 2001–2 and 2006–7

The U.S. Geological Survey, in cooperation with the U.S. Centers for Disease Control and Prevention and the Maine Center for Disease Control and Prevention, assessed the chemical characteristics and the occurrence, distribution, and oxidation state of inorganic arsenic in drinking water from selected domestic well-water supplies in Maine in 2001–2...

Culbertson, Charles W.; Caldwell, James M.; Schalk, Luther F.; Manassaram, Deana; Backer, Lorraine C.; Smith, Andrew E.
Culbertson, C.W., Caldwell, J.M., Schalk, L.F., Manassaram, D., Backer, L.C., and Smith, A.E., 2020, Methods of collection and quality assessment of arsenic data in well-water supplies in Maine, 2001–2 and 2006–7: U.S. Geological Survey Data Series 1125, 11 p., https://doi.org/10.3133/ds1125.

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Year Published: 2020

Scaling responses of leaf nutrient stoichiometry to the lakeshore flooding duration gradient across different organizational levels

Most wetlands have been subject to changes in flooding regimes by climate change and human activities, resulting in widespread alteration of wetland plants at different organizational levels. However, scaling the responses of wetland plants to changes in flooding regimes is still challenging, because flooding could indirectly affect wetland plants...

Chen, Yasong; Stagg, Camille; Cai, Yongjiu; Lü, Xiaotao; Wang, Xiaolong; Shen, Ruichang; Lan, Zhichun

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Year Published: 2020

A tropical cyclone-induced ecological regime shift: Mangrove forest conversion to mudflat in Everglades National Park (Florida, USA)

The ecological effects of tropical cyclones on mangrove forests are diverse and highly location- and cyclone-dependent. Ecological resistance, resilience, and enhancement are terms that describe most mangrove forest responses to tropical cyclones. However, in the most extreme cases, tropical cyclones can trigger abrupt and irreversible ecological...

Osland, Michael; Feher, Laura; Anderson, Gordon; Vervaeke, William; Krauss, Ken; Whelan, Kevin R.T.; Balentine, Karen S.; Tiling-Range, G.; Smith, Thomas J.; Cahoon, Donald

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Year Published: 2020

Developmental ecomorphology of the epibranchial organ of the silver carp, Hypophthalmichthys molitrix

Silver carp regularly consume and digest particles of food as small as 5 μm. This ability drives their efficient consumption of phytoplankton and because they feed low on the food chain they have an important place in aquaculture worldwide. In North America, where they are considered invasive, silver carp deplete food resources for native species...

Cohen, Karly E.; George, Amy E.; Chapman, Duane C.; Chick, John H.; Hernandez, L. Patricia

Filter Total Items: 220

Flooding and Train Derailment in Northwest Iowa

The Rock River flooded parts of northwest Iowa after several days of heavy rainfall in June 2018. A train carrying crude oil derailed over a flooded bridge south of Doon on June 22, prompting evacuations of nearby homes. Landsat 8 images from June 1 and June 24 show the extent of the flooding.

Image: New Map Turtle in Louisiana and Mississippi

New Map Turtle in Louisiana and Mississippi

USGS researchers discovered a new species of turtle. The Pearl River map turtle makes its home in the Pearl River of Louisiana and Mississippi.

Land-Cover Modeling - Alexandria, Louisiana - B2 Scenario

Alexandria, Louisiana
2006 to 2050 Land-cover Change
IPCC SRES B2 Scenario

 

The IPCC SRES B2 scenario focuses on environmentally friendly lifestyles and local solutions to social and environmental problems. The emphasis on regional self-reliance results in a desire for local food and energy products. Environmental impacts on the

...
Image: Studying Louisiana Marshland

Studying Louisiana Marshland

Dr. Lee Foote, National Wetlands Research Center, studies a Louisiana marshland.

Image: USGS Measures Flooding in Louisiana

USGS Measures Flooding in Louisiana

USGS scientists Paul Frederick and Mike Descant make sure there is enough clearance for their boat to drive under a bridge on the Atchafalaya River near Melville, La. 

Image: Louisiana Black Bear and Cubs

Louisiana Black Bear and Cubs

A threatened Louisiana black bear and her cubs up in a tree.

Filter Total Items: 253
USGS
November 1, 2005

Hurricanes Katrina and Rita transformed some 100 square miles of marsh to open water in southeastern Louisiana, according to preliminary estimates by U.S. Geological Survey (USGS) based on an analysis of Landsat satellite data from September and October.

USGS science for a changing world logo
November 1, 2005

Hurricanes Katrina and Rita transformed some 100 square miles of marsh to open water in southeastern Louisiana, according to preliminary estimates by U.S. Geological Survey (USGS) based on an analysis of Landsat satellite data from September and October.

USGS
September 24, 2005

The U.S. Geological Survey today is alerting state and federal agencies to the increased potential for landslides on September 24-28 in the Ozark-Ouachita mountainous regions of Arkansas, Oklahoma and Missouri due to anticipated heavy rainfall from Hurricane Rita.

USGS science for a changing world logo
September 24, 2005

The U.S. Geological Survey today is alerting state and federal agencies to the increased potential for landslides on September 24-28 in the Ozark-Ouachita mountainous regions of Arkansas, Oklahoma and Missouri due to anticipated heavy rainfall from Hurricane Rita.

USGS science for a changing world logo
September 20, 2005

In a cooperative research program, the USGS, NASA and the U.S. Army Corps of Engineers (USACE) are using airborne laser mapping systems to quantify coastal change along the entire coastline affected by Hurricane Katrina (http://coastal.er.usgs.gov/hurricanes/katrina/).

USGS
September 15, 2005

The USGS announced today (Sept. 15, 2005) that the National Geospatial Technical Operations Center (NGTOC) will be located in the city of Denver. The NGTOC will consolidate the functions and operations currently performed in four USGS mapping centers (Menlo Park, Calif.; Rolla, Mo.; Denver, Colo.; and Reston, Va.) and other distributed sites to one location.

USGS
September 14, 2005

U.S. Geological Survey scientists report that preliminary analysis of satellite data indicate Hurricane Katrina caused substantial marsh loss in St. Bernard and Plaquemines parishes.

USGS science for a changing world logo
September 14, 2005

U.S. Geological Survey scientists report that preliminary analysis of satellite data indicate Hurricane Katrina caused substantial marsh loss in St. Bernard and Plaquemines parishes.

USGS science for a changing world logo
September 6, 2005

The USGS is releasing today a 25-minute videotape of footage showing coastal impacts resulting from Hurricane Katrina along the coastline of the northern Gulf of Mexico.

USGS
September 6, 2005

The USGS is releasing today a 25-minute videotape of footage showing coastal impacts resulting from Hurricane Katrina along the coastline of the northern Gulf of Mexico.

USGS science for a changing world logo
September 2, 2005

 

The USGS has posted aerial photos from the northern Gulf of Mexico coastline showing before and after conditions in response to Hurricane Katrina. The photos show five photo pairs of the Chandeleur Islands, Louisiana, and three photo pairs of Dauphin Island, Alabama. A set of ‘quick response’ photos from Bay St. Louis to Biloxi, Mississippi are also posted.

USGS
September 2, 2005

 

The USGS has posted aerial photos from the northern Gulf of Mexico coastline showing before and after conditions in response to Hurricane Katrina. The photos show five photo pairs of the Chandeleur Islands, Louisiana, and three photo pairs of Dauphin Island, Alabama. A set of ‘quick response’ photos from Bay St. Louis to Biloxi, Mississippi are also posted.