Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 9967
Using dissolved organic matter fluorescence to predict total mercury and methylmercury in forested headwater streams, Sleepers River, Vermont USA
Aqueous transport of mercury (Hg) across the landscape is closely linked to dissolved organic matter (DOM). Both quantity and quality of DOM affect Hg mobility, as well as the formation and transport of toxic methylmercury (MeHg), but only a limited number of field studies have investigated Hg and MeHg with respect to specific DOM components. We investigated these interactions at the 41-ha foreste
Authors
James B. Shanley, Vivien F. Taylor, Kevin A. Ryan, Ann T. Chalmers, Julia Perdrial, Aron Stubbins
The Coalition for Conservation Genetics: Working across organizations to build capacity and achieve change in policy and practice
The Coalition for Conservation Genetics (CCG) brings together four eminent organizations with the shared goal of improving the integration of genetic information into conservation policy and practice. We provide a historical context of conservation genetics as a field and reflect on current barriers to conserving genetic diversity, highlighting the need for collaboration across traditional divides
Authors
Francine Kershaw, Michael W. Bruford, W. Chris Funk, Catherine E. Grueber, Sean M. Hoban, Margaret Hunter, Linda Laikre, Anna J. MacDonald, Mariah H. Meek, Cinnamon Mittan, David O´Brien, Rob Ogden, Robyn E. Shaw, Cristiano Vernesi, Gernot Segelbacher
Modeling the impact of invasive species litter on conditions affecting its spread and potential regime shift
Many introduced plants pose invasion risks globally and threaten the biodiversity of native ecosystems. Such non-native plants can become invasive when they have advantages over native plants, such as having fewer natural enemies. Invasive plants often have the ability to alter ecosystem properties after they have become established, which can make it difficult to eliminate the invasive. In princi
Authors
Yuanming Lu, Donald L. DeAngelis, Junfei Xia, Jiang Jiang
Evaluating temporal and spatial transferability of a tidal inundation model for foraging waterbirds
For ecosystem models to be applicable outside their context of development, temporal and spatial transferability must be demonstrated. This presents a challenge for modeling intertidal ecosystems where spatiotemporal variation arises at multiple scales. Models specializing in tidal dynamics are generally inhibited from having wider ecological applications by coarse spatiotemporal resolution or hig
Authors
Marisa T. Martinez, Leonardo Calle, Stephanie Romanach, Dale E. Gawlik
On the potential for remote observations of coastal morphodynamics from surf-cameras
Recreational surf-cameras (surfcams) are ubiquitous along many coastlines, and yet are a largely untapped source of coastal morphodynamic observations. Surfcams offer broad spatial coverage and flexibility in data collection, but a method to remotely acquire ground control points (GCPs) and initial camera parameter approximations is necessary to better leverage this existing infrastructure to make
Authors
Matthew P. Conlin, Peter N. Adams, Margaret Louise Palmsten
Comparison of computed flow through manually operated water control structures in Florida using theoretical versus calibrated coefficients
The U.S. Geological Survey (USGS) calculated discharge at 13 water control structures in Florida using theoretical equations and uncalibrated coefficients gathered from previous studies and typical textbook values for selected flow regimes and structure types. These discharges were compared to the real-time discharges calculated and published by the USGS from October 1, 2007, to September 30, 2019
Authors
Patrick J. Ryan, Cody L. Hazelbaker
A biological condition gradient for coral reefs in the US Caribbean Territories: Part I. Coral narrative rules
As coral reef condition and sustainability continue to decline worldwide, losses of critical habitat and their ecosystem services have generated an urgency to understand and communicate reef response to management actions, environmental contamination, and natural disasters. Increasingly, coral reef protection and restoration programs emphasize the need for robust assessment tools for protecting hi
Authors
Deborah L. Santavy, Susan K. Jackson, Benjamin Jessup, Jeroen Gerritsen, Caroline Rogers, William S. Fisher, Ernesto Weil, Alina Szmant, David Cuevas-Miranda, Brian K. Walker, Christopher F G Jeffrey, Patricia Bradley, David Ballantine, Loretta Roberson, Hector Ruiz-Torres, Brandi Todd, Tyler B. Smith, Randy Clark, Ernesto L. Diaz, Jorge Bauzá-Ortega, Christina Horstmann, Sandy Raimondo
Interlaboratory comparison of three sediment bioaccumulation tests
Standard bioaccumulation tests are commonly conducted using Macoma nasuta (clam), and Alitta virens (polychaete) for marine tests, and Lumbriculus variegatus (an oligochaete) for freshwater tests. Because the interlaboratory variability associated with these tests is unknown, four experienced laboratories conducted standard 28-day bioaccumulation tests with the above species using sediments contam
Authors
Guilherme R. Lotufo, James M. Biedenbach, J. Daniel Farrar, Michael K. Chanov, Brian W. Hester, Charles R. Warbritton, Jeffery Steevens, Jenifer M. Netchaev, Anthony J. Bednar, David W. Moore
Chloride toxicity to native freshwater species in natural and reconstituted prairie pothole waters
Oil and gas extraction in the Prairie Pothole Region (PPR) of the northern USA has resulted in elevated chloride concentrations in ground and surface water due to widespread contamination with highly saline produced water, or brine. The toxicity of chloride is poorly understood in the high hardness waters characteristic of the region. We evaluated the toxicity of chloride to two endemic species, D
Authors
David Harper, Holly J. Puglis, Bethany K. Kunz, Aida Farag
Predicted sea-level rise-driven biogeomorphological changes on Fire Island, New York: Implications for people and plovers
Forecasting biogeomorphological conditions for barrier islands is critical for informing sea-level rise (SLR) planning, including management of coastal development and ecosystems. We combined five probabilistic models to predict SLR-driven changes and their implications on Fire Island, New York, by 2050. We predicted barrier island biogeomorphological conditions, dynamic landcover response, piping
Authors
Sara Lynn Zeigler, Benjamin T. Gutierrez, Erika Lentz, Nathaniel Plant, Emily J. Sturdivant, Kara S. Doran
Uncertainty analysis of index-velocity meters and discharge computations at the Chicago Sanitary and Ship Canal near Lemont, Illinois, water years 2006–16
Monitoring discharge in the Chicago Sanitary and Ship Canal is critical for the accounting done by the U.S. Army Corps of Engineers of the diversion of water from Lake Michigan to the Mississippi River Basin by the State of Illinois. The primary streamgage used for this discharge monitoring, the Chicago Sanitary and Ship Canal near Lemont, Illinois (U.S. Geological Survey station 05536890), is ope
Authors
Thomas M. Over, Marian Muste, James J. Duncker, Heng-Wei Tsai, P. Ryan Jackson, Kevin K. Johnson, Frank L. Engel, Crystal D. Prater