Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10362
Impacts of sediment removal from and placement in coastal barrier island systems Impacts of sediment removal from and placement in coastal barrier island systems
Executive Summary On June 24, 2019, Congressman Raul Grijalva of Arizona, Chair of the House Committee on Natural Resources, sent a letter to the directors of the U.S. Fish and Wildlife Service and the U.S. Geological Survey to request their assistance in answering questions regarding coastal sediment resource management within the Coastal Barrier Resources System as defined by the...
Authors
Jennifer L. Miselis, James G. Flocks, Sara Zeigler, Davina Passeri, David R. Smith, Jill R. Bourque, Christopher R. Sherwood, Christopher G. Smith, Daniel J. Ciarletta, Kathryn Smith, Kristen Hart, David C. Kazyak, Alicia Berlin, Bianca Prohaska, Teresa Calleson, Kristi Yanchis
Use of dissolved oxygen monitoring to evaluate phosphorus loading in Connecticut streams, 2015–18 Use of dissolved oxygen monitoring to evaluate phosphorus loading in Connecticut streams, 2015–18
The Connecticut Department of Energy and Environmental Protection (CT DEEP) has developed an interim phosphorus reduction strategy to establish water-quality-based phosphorus limits in nontidal freshwaters for industrial and municipal water pollution control facilities. A recommendation in the strategy included the addition of diurnal dissolved oxygen (DO) sampling to the sampling of...
Authors
Brittney Izbicki, Jonathan Morrison
Synthetic aperture radar and optical mapping used to monitor change and replacement of Phragmites australis marsh in the Lower Mississippi River Delta, Louisiana Synthetic aperture radar and optical mapping used to monitor change and replacement of Phragmites australis marsh in the Lower Mississippi River Delta, Louisiana
Synthetic aperture radar (SAR) mapping of density as an enhancement of Phragmites australis optical live fractional cover (LFC) mapping was carried out in the lower Mississippi Delta during 2016 to 2019. Also, as part of the study, the replacement of P. australis with elephant-ear was analyzed. To that end, yearly maps from 2016 to 2019 of L-band SAR horizontal send, vertical receive (HV...
Authors
Elijah W. Ramsey III, Amina Rangoonwala
Improving species status assessments under the U.S. Endangered Species Act and implications for multispecies conservation challenges worldwide Improving species status assessments under the U.S. Endangered Species Act and implications for multispecies conservation challenges worldwide
Despite its successes, the U.S. Endangered Species Act (ESA) has proven challenging to implement due to funding limitations, workload backlog, and other problems. As threats to species survival intensify and as more species come under threat, the need for the ESA and similar conservation laws and policies in other countries to function efficiently has grown. Attempts by the U.S. Fish and...
Authors
Reed Noss, Jennifer M. Cartwright, Dwayne Estes, Theo Witsell, Gregg Elliott, Daniel S. Adams, Matthew A. Albrecht, Ryan Boyles, Patrick Comer, Chris Doffitt, JoVonn G. Hill, William C. Hunter, Wesley M. Knapp, Mike Marshall, Jason R. Singhurst, Christopher Tracey, Jeffrey L. Walck, Alan Weakley
Flow characteristics and salinity patterns in tidal rivers within the northern Ten Thousand Islands, southwest Florida, water years 2007–19 Flow characteristics and salinity patterns in tidal rivers within the northern Ten Thousand Islands, southwest Florida, water years 2007–19
Freshwater flow to the Ten Thousand Islands (TTI) estuary has been altered by the construction of the Tamiami Trail and construction of features in the now defunct Southern Golden Gate Estates development. This development included four associated canals that combine into the Faka Union Canal, which discharges into the TTI estuary. The Picayune Strand Restoration Project (PSRP) was...
Authors
Amanda C. Booth, Travis M. Knight
Initial estimates of net infiltration and irrigation from a soil-water-balance model of the Mississippi Embayment Regional Aquifer Study Area 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...
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 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...
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 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...
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 Sjogren-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 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...
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 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...
Authors
Reed F. Noss, Jennifer M. Cartwright, Dwayne Estes, Theo Witsell, K. Gregg Elliott, Daniel S. Adams, Matthew A. Albrecht, Ryan P. 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 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...
Authors
Marinna A. Martini, Ellyn Montgomery, Steven E. Suttles, John C. Warner
American crocodiles (Crocodylus acutus) as restoration bioindicators in the Florida Everglades 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...
Authors
Venetia S. Briggs-Gonzalez, Mathieu Basille, Michael Cherkiss, Frank J. Mazzotti