Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 9967
Initial estimates of net infiltration and irrigation from a soil-water-balance model of the Mississippi Embayment Regional Aquifer Study Area
The Mississippi embayment encompasses about 100,000 square miles and covers parts of eight States. In 2016, the U.S. Geological Survey began updating previous work for a part of the embayment known as the Mississippi Alluvial Plain to support informed water use and agricultural policy in the region. Groundwater, water use, economic, and other related models are being combined with field surveys an
Authors
Stephen, M. Westenbroek, Martha G. Nielsen, David E. Ladd
Estimating the influence of oyster reef chains on freshwater detention at the estuary scale using Landsat-8 imagery
Oyster reef chains grow in response to local hydrodynamics and can redirect flows, particularly when reef chains grow perpendicular to freshwater flow paths. Singularly, oyster reef chains can act as porous dams that may facilitate nearshore accumulation of fresh or low-salinity water, in turn creating intermediate salinities that support oyster growth and estuarine conditions. However, oyster-dri
Authors
Alice Alonso, Natalie G. Nelson, Simeon Yurek, David Kaplan, Maitane Olabarrieta, Peter C Frederick
Global commitments to conserving and monitoring genetic diversity are now necessary and feasible
Global conservation policy and action have largely neglected protecting and monitoring genetic diversity—one of the three main pillars of biodiversity. Genetic diversity (diversity within species) underlies species’ adaptation and survival, ecosystem resilience, and societal innovation. The low priority given to genetic diversity has largely been due to knowledge gaps in key areas, including the i
Authors
Sean M. Hoban, Michael W. Bruford, W. Chris Funk, Peter Galbusera, M. Patrick Griffith, Catherine E. Grueber, Myriam Heuertz, Margaret Hunter, Christina Hvilsom, Belma Kalamujic Stroil, Francine Kershaw, Colin K. Khoury, Linda Laikre, Magarida Lopes-Fernandes, Anna J. MacDonald, Joachim Mergeay, Mariah Meek, Cinnamon Mittan, Tarek A. Mukassabi, David O'Brien, Rob Ogden, Clarisse Palma-Silva, Uma Ramakrishnan, Gernot Segelbacher, Robyn E. Shaw, Per Sjögren-Gulve, Nevena Velickovic, Cristiano Vernesi
Catch rates for sturgeon chubs and sicklefin chubs in the Upper Missouri River 2004–2016 and correlations with biotic and abiotic variables
A multiweek standardized sampling regime during 2004–2016 in a 60-km reach of the Upper Missouri River assessed reproduction and catch rates for Sturgeon Chub Macrhybopsis gelida and Sicklefin Chub Macrhybopsis meeki. We sampled age-0 Macrhybopsis (primarily Sturgeon Chubs, but potentially including Sicklefin Chubs) all years to indicate successful reproduction, but noted an inverse correlation of
Authors
Patrick Braaten, David B. Fuller, Tyler M. Haddix, John R. Hunziker, Michael E. Colvin, Luke M. Holmquist, Ryan H. Wilson
Science needs of southeastern grassland species of conservation concern: A framework for species status assessments
The unglaciated southeastern United States is a biodiversity hotspot, with a disproportionate amount of this biodiversity concentrated in grasslands. Like most hotspots, the Southeast is also threatened by human activities, with the total reduction of southeastern grasslands estimated as 90 percent (upwards to 100 percent for some types) and with many threats escalating today. This report summariz
Authors
Reed F. Noss, Jennifer M. Cartwright, Dwayne Estes, Theo Witsell, K. Gregg Elliott, Daniel S. Adams, Matthew A. Albrecht, Ryan Boyles, Patrick J. Comer, Chris Doffitt, Don Faber-Langendoen, JoVonn G. Hill, William C. Hunter, Wesley M. Knapp, Mike Marshall, Milo Pyne, Jason R. Singhurst, Christopher Tracey, Jeffrey L. Walck, Alan Weakley
Summary of oceanographic and water-quality measurements offshore of Matanzas Inlet, Florida, 2018
U.S. Geological Survey (USGS) scientists and technical staff deployed instrumented underwater platforms and buoys to collect oceanographic and atmospheric data at two sites near Matanzas Inlet, Florida, on January 24, 2018, and recovered them on April 13, 2018. Matanzas Inlet is a natural, unmaintained inlet on the Florida Atlantic coast that is well suited to study inlet and cross-shore processes
Authors
Marinna A. Martini, Ellyn Montgomery, Steven E. Suttles, John C. Warner
American crocodiles (Crocodylus acutus) as restoration bioindicators in the Florida Everglades
The federally threatened American crocodile (Crocodylus acutus) is a flagship species and ecological indicator of hydrologic restoration in the Florida Everglades. We conducted a long-term capture-recapture study on the South Florida population of American crocodiles from 1978 to 2015 to evaluate the effects of restoration efforts to more historic hydrologic conditions. The study produced 10,040 c
Authors
Venetia S. Briggs-Gonzalez, Mathieu Basille, Michael Cherkiss, Frank J. Mazzotti
Rediscovery and genetic confirmation of the Threeridge Mussel, Amblema plicata (Say, 1817) (Bivalvia, Unionidae), in the Choctawhatchee River, Florida, USA
Recent freshwater mussel research has resulted in rediscovery of several species presumed extinct. We report the rediscovery of Amblema plicata (Say, 1817) in 2019 from the Choctawhatchee River, Florida, USA. Amblema plicata has not been reported in the Choctawhatchee river basin since 1958, more than 61 years ago. This species was collected during the long-term monitoring of freshwater mussels in
Authors
Lauren N. Patterson, Susan R. Geda, Nathan A. Johnson
Identifying chemicals and mixtures of potential biological concern detected in passive samplers from Great Lakes tributaries using high-throughput data and biological pathways
Waterborne contaminants were monitored in 69 tributaries of the Laurentian Great Lakes in 2010 and 2014 using semipermeable membrane devices (SPMDs) and polar organic chemical integrative samplers (POCIS). A risk-based screening approach was used to prioritize chemicals and chemical mixtures, identify sites at greatest risk for biological impacts, and identify potential hazards to monitor at those
Authors
David Alvarez, Steven R. Corsi, Laura A. DeCicco, Daniel L. Villeneuve, Austin K. Baldwin
Pilot-scale expanded assessment of inorganic and organic tapwater exposures and predicted effects in Puerto Rico, USA
A pilot-scale expanded target assessment of mixtures of inorganic and organic contaminants in point-of-consumption drinking water (tapwater, TW) was conducted in Puerto Rico (PR) to continue to inform TW exposures and corresponding estimations of cumulative human-health risks across the US. In August 2018, a spatial synoptic pilot assessment of than 524 organic, 37 inorganic, and select microbiolo
Authors
Paul M. Bradley, Ingrid Y. Padilla, Kristin M. Romanok, Kelly Smalling, Michael J. Focazio, Sara E. Breitmeyer, Mary C. Cardon, Justin M. Conley, Nicola Evans, Carrie E Givens, James L. Gray, L. Earl Gray, Phillip C. Hartig, Michelle Hladik, Christopher P. Higgins, Luke R. Iwanowicz, Rachael F. Lane, Keith Loftin, R. Blaine McCleskey, Carrie A. McDonough, Elizabeth Medlock-Kakaley, Shannon M. Meppelink, Christopher P. Weis, Vickie S. Wilson
A U.S.-China EcoPartnership study of disturbed wetland vegetation in West Dongting Lake, China
West Dongting Lake in China is important for human livelihoods and habitat of migratory waterfowl and other wildlife. The waterway re-engineering and agriculture intensification have contributed to changes in hydrology, sediment, and vegetation on the floodplain. This paper describes an EcoPartnership program conducted by the U.S. Geological Survey, Wetland and Aquatic Research Center, and Beijing
Authors
Ting Lei, Beth Middleton
Emerging dominance of Paratrochammina simplissima (Cushman and McCulloch) in the northern Gulf of Mexico following hydrologic and geomorphic changes
Grand Bay estuary in coastal Mississippi and Alabama (USA) has undergone significant geomorphic changes over the last few centuries as a result of anthropogenic (bridge, road, and hardened shoreline construction) and climatic (extreme storm events) processes, which reduce freshwater input, sediment supply, and degrade barrier islands. To investigate how geomorphic changes may have altered the Gran
Authors
Alisha M. Ellis, Christopher G. Smith