Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10352
Standard operating procedure 1.2.16 wadeable stream reach-scale field data collection—version 1.0 Standard operating procedure 1.2.16 wadeable stream reach-scale field data collection—version 1.0
The following standard operation procedure (SOP) outlines the procedure for collecting physical habitat data from previously selected and benchmarked wadeable streams. The purpose of this SOP is to ensure that data are collected using methods that are consistent between reaches and years. Using the methods described in this SOP will also ensure that the data will be comparable to data...
Authors
J. M McDonald, E. N. Starkey, Mark B. Gregory, Jeffrey W. Riley
Standard Operating Procedure 1.2.14 Wadeable Stream Reach Selection and Location of Sampling Points—Version 1.0 Standard Operating Procedure 1.2.14 Wadeable Stream Reach Selection and Location of Sampling Points—Version 1.0
The following standard operating procedure (SOP) outlines the procedure for selecting stream reaches to be used in Monitoring Wadeable Stream Habitat Conditions in Southeast Coast Network Parks: Protocol Narrative (McDonald et al. 2018a). The techniques and procedures outlined in this SOP are based on methods used by the U.S. Environmental Protection Agency (EPA 2013), the U.S...
Authors
Jacob M. McDonald, E. N. Starkey, Jeffrey W. Riley, Mark B. Gregory
Setting up and configuring a total station: Version 1.0: Southeast coast network standard operating procedure 1.2.17 Setting up and configuring a total station: Version 1.0: Southeast coast network standard operating procedure 1.2.17
The following standard operating procedure (SOP) outlines the process for setting up and configuring a total station to collect accurate x, y, and z coordinate data. Total stations allow accurate spatial data to be collected and tied to a permanent benchmark. These data can be used to detect small geomorphic changes between site surveys. Many different types of total stations and...
Authors
Jacob M. McDonald, Mark B. Gregory, Jeffrey W. Riley, E. N. Starkey
Cytonuclear discordance in the Florida Everglades invasive Burmese python (Python bivittatus) population reveals possible hybridization with the Indian python (P. molurus) Cytonuclear discordance in the Florida Everglades invasive Burmese python (Python bivittatus) population reveals possible hybridization with the Indian python (P. molurus)
The invasive Burmese python (Python bivittatus) has been reproducing in the Florida Everglades since the 1980s. These giant constrictor snakes have caused a precipitous decline in small mammal populations in southern Florida following escapes or releases from the commercial pet trade. To better understand the invasion pathway and genetic composition of the population, two mitochondrial...
Authors
Margaret E. Hunter, Nathan A. Johnson, Brian J. Smith, Michelle C. Davis, John S. Butterfield, Ray W. Snow, Kristen M. Hart
Ancient convergent losses of Paraoxonase 1 yield potential risks for modern marine mammals Ancient convergent losses of Paraoxonase 1 yield potential risks for modern marine mammals
Mammals diversified by colonizing drastically different environments, with each transition yielding numerous molecular changes, including losses of protein function. Though not initially deleterious, these losses could subsequently carry deleterious pleiotropic consequences. We have used phylogenetic methods to identify convergent functional losses across independent marine mammal...
Authors
Wynn K. Meyer, Jerrica Jamison, Rebecca Richter, Stacy E. Woods, Raghavendran Partha, Amanda Kowalczyk, Charles Kronk, Maria Chikina, Robert K. Bonde, Daniel E. Crocker, Joseph C. Gaspard, Janet M. Lanyon, Judit Marsillach, Clement E. Furlong, Nathan L. Clark
Sensitivity of mangrove range limits to climate variability Sensitivity of mangrove range limits to climate variability
Aim Correlative distribution models have been used to identify potential climatic controls of mangrove range limits, but there is still uncertainty about the relative importance of these factors across different regions. To provide insights into the strength of climatic control of different mangrove range limits, we tested whether temporal variability in mangrove abundance increases near...
Authors
Kyle C. Cavanaugh, Michael J. Osland, Remi Bardou, Gustavo Hinojosa-Arango, Juan M. Lopez-Vivas, John D. Parker, Andre S. Rovai
Characterizing residence patterns of North Atlantic right whales in the southeastern U.S. with a multistate open robust design model Characterizing residence patterns of North Atlantic right whales in the southeastern U.S. with a multistate open robust design model
Effective conservation of endangered North Atlantic right whales (Eubalaena glacialis) requires information about their spatio-temporal distribution. Understanding temporal distribution is particularly important, because a portion of the population migrates between high latitude summer feeding grounds off the northeastern U.S. and Canadian Maritimes coasts and lower latitude calving and...
Authors
A.M. Krystan, T.A. Gowan, William L. Kendall, Julien Martin, J.G. Ortega-Ortiz, K.B. Jackson, A.R. Knowlton, P. Naessig, M. Zani, D.W. Schulte, C.R. Taylor
Effects of proposed navigation channel improvements on sediment transport in Mobile Harbor, Alabama Effects of proposed navigation channel improvements on sediment transport in Mobile Harbor, Alabama
A Delft3D model was developed to evaluate the potential effects of proposed navigation channel deepening and widening in Mobile Harbor, Alabama. The model performance was assessed through comparisons of modeled and observed data of water levels, velocities, and bed level changes; the model captured hydrodynamic and sediment transport patterns in the study area with skill. The validated...
Authors
Davina Passeri, Joseph W. Long, Robert L. Jenkins, David M. Thompson
Designing a protected area to safeguard imperiled species from urbanization Designing a protected area to safeguard imperiled species from urbanization
Reserve design is a process that can address ecological, social, and political factors to identify parcels of land needed to sustain wildlife populations and other natural resources. Acquisition of parcels for a large terrestrial reserve is difficult because it typically occurs over a long timeframe and thus invokes consideration of future conditions such as climate and urbanization...
Authors
Stephanie S. Romanach, Bradley Stith, Fred A. Johnson
A Bayesian approach to predict sub-annual beach change and recovery A Bayesian approach to predict sub-annual beach change and recovery
The upper beach, between the astronomical high tide and the dune-toe, supports habitat and recreation along many beaches, making predictions of upper beach change valuable to coastal managers and the public. We developed and tested a Bayesian network (BN) to predict the cross-shore position of an upper beach elevation contour (ZlD) following 1 month to 1-year intervals at Fire Island...
Authors
Kathleen Wilson, Erika E. Lentz, Jennifer L. Miselis, Ilgar Safak, Owen T. Brenner
Floristic quality index and forested floristic quality index: Assessment tools for restoration projects and monitoring sites in coastal Louisiana Floristic quality index and forested floristic quality index: Assessment tools for restoration projects and monitoring sites in coastal Louisiana
The Floristic Quality Index (FQI) has been used in many areas throughout the United State to assess the integrity of plant communities and restoration projects. Here, we summarize two tools that have been developed for monitoring sites in coastal Louisiana wetlands. The FQI was modified for herbaceous data collected in coastal Louisiana monitoring sites. A second FQI, the Forested...
Authors
Kari Cretini, William B. Wood, Jenneke M. Visser, Ken W. Krauss, Leigh Anne Sharp, Gregory D. Steyer, Gary P. Shaffer, Sarai Piazza
Spatial and temporal variability of pCO2, carbon fluxes and saturation state on the West Florida Shelf Spatial and temporal variability of pCO2, carbon fluxes and saturation state on the West Florida Shelf
The West Florida Shelf (WFS) is a source of uncertainty for the Gulf of Mexico carbon budget. Data from the synthesis of approximately 135,000 pCO2 values from over 96 cruises from the WFS show that the shelf waters fluctuate between being a weak source to a weak sink of carbon with the atmosphere. Overall, the shelf acts as a weak source of CO2 at 0.32 ± 1.5 mol m-2 yr-1. Subregions...
Authors
L. Robbins, K. Daley, L. Barbero, R. Wanninkhof, R.L. Heathcote, H. Zong, John T. Lisle, W.-J. Cai, C. Smith