Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10378
Malaclemys terrapin (Diamondback terrapin) Lepadomorph epibionts Malaclemys terrapin (Diamondback terrapin) Lepadomorph epibionts
Diamondback terrapins (Malaclemys terrapin) are distributed along the Atlantic and Gulf of Mexico (GoM) coasts of the U.S.A. (Hart et al. 2014. Conserv. Genet. DOI 10.1007/s10592-014-0563-6). Under consideration for listing in Florida and proposed for Appendix II listing by the U.S. at CoP16 (CITES), terrapin populations are declining in many parts of their range due to drowning in crab...
Authors
Margaret Lamont, Daniel J. Catizone, Richard O’Connor, Robert Blais, Limarie Rodgriguez, Cathy Holmes
Benthic infaunal communities of Baltimore and Norfolk Canyons Benthic infaunal communities of Baltimore and Norfolk Canyons
The imperative for finding, cataloging, and understanding continental margin diversity derives from the many key functions, goods and services provided by margin ecosystems and by an increasingly deleterious human footprint on our continental slopes (Levin and Dayton 2009). Progress in seafloor mapping technology and direct observation has revealed unexpected heterogeneity, with a mosaic...
Authors
Craig M. Robertson, Jill R. Bourque, Amanda Demopoulos
Underwater photographic reconnaissance and habitat data collection in the Florida Keys—A procedure for ground truthing remotely sensed bathymetric data Underwater photographic reconnaissance and habitat data collection in the Florida Keys—A procedure for ground truthing remotely sensed bathymetric data
Bathymetric geoprocessing analyses of the Florida Reef Tract have provided insights into trends of seafloor accretion and seafloor erosion over time and following major storm events. However, bathymetric surveys sometimes capture manmade structures and vegetation, which do not represent the desired bare-earth data. Therefore, ground truthing is essential to maintain the most accurate...
Authors
Zachery W. Fehr, Kimberly K. Yates
Decision context as an essential component of population viability analysis Decision context as an essential component of population viability analysis
Population viability analysis (PVA) is a widely used tool that applies demographic data in simulation frameworks to assess extinction risk for species or populations. It is used in diverse conservation applications, including evaluating management effectiveness, relative risk of threats, and potential changes to protective status (Beissinger & McCullough, 2002), and can be a critical...
Authors
Abigail Jean Lawson, Brian Folt, Anna Maureen Tucker, Francesca T. Erickson, Conor P. McGowan
Mapping climate change resistant vernal pools in the northeastern U.S. Mapping climate change resistant vernal pools in the northeastern U.S.
Vernal pools are seasonal wetlands that provide important breeding habitat for a variety of amphibian species. As future climate projections indicate warmer growing seasons and earlier seasonal increases in evapotranspiration, some managers of vernal pools have expressed concern that pools may dry earlier in the season, potentially interfering with completion of amphibian life cycles. In...
Authors
Jennifer M. Cartwright, Evan H. Campbell Grant
Mapping Phragmites australis live fractional cover in the lower Mississippi River Delta, Louisiana Mapping Phragmites australis live fractional cover in the lower Mississippi River Delta, Louisiana
In response to a co-occurring non-native scale infestation and Phragmites australis dieback in southeast Louisiana, normalized difference vegetation index (NDVI) satellite mapping was implemented to track P. australis condition in the lower Mississippi River Delta. While the NDVI mapping successfully documented relative condition changes, identification of cause required a quantitative...
Authors
Amina Rangoonwala, Rebecca J. Howard, Elijah W. Ramsey III
Semiautomated process for enumeration of fishes from recreational-grade side-scan sonar imagery Semiautomated process for enumeration of fishes from recreational-grade side-scan sonar imagery
The use of hydroacoustic techniques is increasing as scientists search for less invasive ways to monitor fish populations, and using recreational side‐scan sonar (SSS) imagery for monitoring has become more common in aquatic resource management over the last 15 years due in part to its low cost and user‐friendly interface. The time‐consuming nature of manually counting fish targets has...
Authors
Katelyn M Lawson, Josey Lee Ridgway, Andrew T. Mueller, Jacob Faulkner, Robin D. Calfee
2020 drought in New England 2020 drought in New England
Below average and infrequent rainfall from May through September 2020 led to an extreme hydrologic drought across much of New England, with some areas experiencing a flash drought, reflecting its quick onset. The U.S. Geological Survey (USGS) recorded record-low streamflow and groundwater levels throughout the region. In September, the U.S. Department of Agriculture (2020) declared...
Authors
Pamela J. Lombard, Janet R. Barclay, Dee-Ann E. Crozier
Council monitoring and assessment program (CMAP) compilation of existing habitat and water quality monitoring and mapping assessments for the Gulf of Mexico Region Council monitoring and assessment program (CMAP) compilation of existing habitat and water quality monitoring and mapping assessments for the Gulf of Mexico Region
This report is a deliverable to the RESTORE Council for Task 7: Document the existing baseline habitat and water quality conditions prior to implementation of the restoration projects; these baseline conditions will serve as a basis for measuring change/progress after restoration. It is the second in a series of CMAP reports. The first report describes the process and development of the...
Authors
Julie Bosch, Heidi Burkart, Bogdan Chivoiu, Randy Clark, Chris Clement, Nicholas Enwright, Steve Giordano, Chris Jeffrey, Ed Johnson, Rheannon M. Hart, Sarah Davidson Hile, Jacob Howell, Claudia Laurenzano, Michael T. Lee, Terrence A. McCloskey, Terry McTigue, Michelle B. Meyers, Scott V. Mize, Mark E. Monaco, Kevin Owen, Richard A. Rebich, Samuel H. Rendon, Ali Robertson, Thomas Sample, Gregory D. Steyer, Kevin J. Suir, Christopher M. Swarzenski, Katie Watson
Envisioning a national invasive species information framework Envisioning a national invasive species information framework
With a view toward creating a national Early Detection and Rapid Response Program (EDRR) program, the United States National Invasive Species Council Management Plan for 2016–2018 calls for a series of assessments of federal EDRR capacities, including the evaluation of “relevant federal information systems to provide the data and other information necessary for risk analyses/horizon...
Authors
Jamie K Reaser, Annie Simpson, Gerald Guala, Jeffrey Morisette, Pam Fuller
Event and decadal-scale modeling of barrier island restoration designs for decision support Event and decadal-scale modeling of barrier island restoration designs for decision support
An interdisciplinary project team was convened to develop a modeling framework that simulates the potential impacts of storms and sea level-rise to habitat availability at Breton Island, Louisiana (Breton) for existing conditions and potential future restoration designs. The model framework was iteratively developed through evaluation of model results at multiple checkpoints. A...
Authors
Joseph W. Long, P. Soupy Dalyander, Michael Poff, Brian Spears, Brett Borne, David M. Thompson, Rangley C. Mickey, Steve Dartez, Gregory Gandy
USGS telemetry database and analyses in support of SEAcarP USGS telemetry database and analyses in support of SEAcarP
No abstract available.
Authors
Brent C. Knights, Marybeth K. Brey, Jessica C. Stanton, Travis J. Harrison, Timothy J. Fox, Enrika Hlavacek, James J. Duncker