Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 9969
Exotic invasive Pomacea maculata (Giant Apple Snail) will depredate eggs of frog and toad species of the Southeastern US
Pomacea maculata (Perry) (Giant Apple Snail) is a freshwater snail native to South America (Hayes et al. 2015) that is an invasive species in the freshwater wetlands and waterways of the northern Gulf of Mexico, peninsular Florida (Benson 2017, Burks 2017) and globally (Hayes et al. 2015). Karraker and Dudgeon (2014) found that Pomacea canaliculata (Lamarck) (Channeled Apple Snail) opportunistical
Authors
Jacoby Carter, Darren Johnson, Sergio Merino
Global dynamics of a mutualism–competition model with one resource and multiple consumers
Recent simulation modeling has shown that species can coevolve toward clusters of coexisting consumers exploiting the same limiting resource or resources, with nearly identical ratios of coefficients related to growth and mortality. This paper provides a mathematical basis for such as situation; a full analysis of the global dynamics of a new model for such a class of n-dimensional consumer–resour
Authors
Yuanshi Wang, Hong Wu, Donald L. DeAngelis
Internal parasites of the two subspecies of the West Indian manatee Trichechus manatus
The West Indian manatee Trichechus manatus is divided into 2 subspecies: the Antillean (T. m. manatus) and Florida (T. m. latirostris) manatees. This study reports sample prevalence of manatee parasites from populations of these 2 subspecies in different geographical locations. Although necropsy is a valuable diagnostic tool for parasite infections, the need for antemortem diagnostic techniques is
Authors
Heidi M. Wyrosdick, Alycia Chapman, Antonio A. Mignucci-Giannoni, Carla I. Riviera-Perez, Robert K. Bonde
Leveraging big data towards functionally-based, catchment scale restoration prioritization
The persistence of freshwater degradation has necessitated the growth of an expansive stream and wetland restoration industry, yet restoration prioritization at broad spatial extents is still limited and ad-hoc restoration prevails. The River Basin Restoration Prioritization tool has been developed to incorporate vetted, distributed data models into a catchment scale restoration prioritization fra
Authors
John P. Lovette, Jonathan M. Duncan, Lindsey S. Smart, John P. Fay, Dean L. Urban, Nancy Daly, Jamie Blackwell, Anne B. Hoos, Ana M. Garcia, Lawrence E. Band
Marine threats overlap key foraging habitat for two imperiled sea turtle species in the Gulf of Mexico
Effective management of human activities affecting listed species requires understanding both threats and animal habitat-use patterns. However, the extent of spatial overlap between high-use foraging areas (where multiple marine species congregate) and anthropogenic threats is not well known. Our modeling approach incorporates data on sea turtle spatial ecology and a suite of threats in the Gulf o
Authors
Kristen M. Hart, Autumn R. Iverson, Ikuko Fujisaki, Margaret M. Lamont, David N. Bucklin, Donna J. Shaver
High-water marks from Hurricane Sandy for coastal areas of Connecticut, Rhode Island, and Massachusetts, October 2012
Because coastal areas in Connecticut, Rhode Island, and Massachusetts were heavily affected by Hurricane Sandy in October 2012, the U.S. Geological Survey (USGS), under a mission agreement with the Federal Emergency Management Agency, collected storm tide high-water marks in those coastal areas. This effort was undertaken to better understand the areal extent and impact of storm tides resulting fr
Authors
Lance J. Ostiguy, Timothy C. Sargent, Brittney Izbicki, Gardner C. Bent
Genetic diversity and structure from Antillean manatee (Trichechus manatus manatus) in the southern Gulf of Mexico: Comparison between connected and isolated populations
Antillean manatees (Trichechus manatus manatus), a subspecies of the West Indian manatee, is listed as endangered species in the Red List of Threatened Species of the International Union for Conservation of Nature. The aims of this research were to survey on the possible regional genetic structure in the southern Gulf of Mexico and to compare genetic status of a landlocked population in Laguna de
Authors
Guadalupe Gomez-Carrasco, Julia Maria Lesher-Gordillo, Leon David Olivera-Gomez, Robert K. Bonde, Stefan Arriaga-Weiss, Raymundo Hernandez-Martinez, Guillermo Castañón-Nájera, Darwin Jimenez-Dominguez, Armando Romo-Lopez, Alberto Delgado-Estrella
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 collected by
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
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. Department of Agric
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
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 surveying gear ar
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)
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 (mtDNA) loc
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
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 lineages. In one
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