Stephen B Hartley (Former Employee)
Science and Products
Filter Total Items: 14
Delineation of marsh types and marsh type-change in Coastal Louisiana for 2007 and 2013 Delineation of marsh types and marsh type-change in Coastal Louisiana for 2007 and 2013
The Bureau of Ocean Energy Management (BOEM) researchers often require detailed information regarding emergent marsh vegetation types (i.e., fresh, intermediate, brackish, and saline) for modeling habitat capacities and mitigation. In response, the U.S. Geological Survey, in collaboration with the Bureau of Ocean Energy Management produced a detailed change classification of emergent...
Vegetation, soil, and landscape data Vegetation, soil, and landscape data
The northern Gulf of Mexico coast spans two major climate gradients and represents an excellent natural laboratory for developing climate-influenced ecological models. In this project, we used these zones of remarkable transition to develop macroclimate-based models for quantifying the regional responses of coastal wetland ecosystems to climate variation. In addition to providing...
Filter Total Items: 29
Movements of wild pigs in Louisiana and Mississippi, 2011-13 Movements of wild pigs in Louisiana and Mississippi, 2011-13
The prolific breeding capability, behavioral adaptation, and adverse environmental impacts of invasive wild pigs (Sus scrofa) have increased efforts towards managing their populations and understanding their movements. Currently, little is known about wild pig populations and movements in Louisiana and Mississippi. From 2011 to 2013, the U.S. Geological Survey investigated spatial and...
Authors
Stephen B. Hartley, Buddy L. Goatcher, Sijan Sapkota
Delineation of marsh types of the Texas coast from Corpus Christi Bay to the Sabine River in 2010 Delineation of marsh types of the Texas coast from Corpus Christi Bay to the Sabine River in 2010
Coastal zone managers and researchers often require detailed information regarding emergent marsh vegetation types for modeling habitat capacities and needs of marsh-reliant wildlife (such as waterfowl and alligator). Detailed information on the extent and distribution of marsh vegetation zones throughout the Texas coast has been historically unavailable. In response, the U.S. Geological...
Authors
Nicholas M. Enwright, Stephen B. Hartley, Michael G. Brasher, Jenneke M. Visser, Michael K. Mitchell, Bart M. Ballard, Mark W. Parr, Brady R. Couvillion, Barry C. Wilson
Satellite tracking and geospatial analysis of feral swine and their habitat use in Louisiana and Mississippi Satellite tracking and geospatial analysis of feral swine and their habitat use in Louisiana and Mississippi
Feral swine (Sus scrofa) is an invasive species that was first introduced to the continental United States in the 1500s by European explorers. Also known as feral hogs or feral pigs, the animals typically weigh about 200 pounds (up to 400 pounds), have characteristic tusks up to 3 inches long, are territorial, and live in groups, except for the boars, who are solitary and typically...
Authors
Stephen B. Hartley, Kathryn A. Spear, Buddy L. Goatcher
A catalog of Louisiana's nesting seabird colonies A catalog of Louisiana's nesting seabird colonies
Summarizing his colonial nesting waterbird survey experiences along the northern coast of the Gulf of Mexico in a paper presented to the Colonial Waterbird Group of the Waterbird Society (Portnoy 1978), bird biologist John W. Portnoy stated, “This huge concentration of nesting waterbirds, restricted almost entirely to the wetlands and estuaries of southern Louisiana, is unmatched in all...
Authors
William R. Fontenot, Steve W. Cardiff, Richard A. DeMay, Donna L. Dittmann, Stephen B. Hartley, Clinton W. Jeske, Nicole Lorenz, Thomas C. Michot, Robert Dan Purrington, Michael A. Seymour, William G. Vermillion
A geographic information system tool for aquatic resource conservation in the Red and Sabine River Watersheds of the southeast United States A geographic information system tool for aquatic resource conservation in the Red and Sabine River Watersheds of the southeast United States
Our goal was to build a geographic information system (GIS) tool to enhance modeling and hypothesis testing relevant to watersheds and fish fauna of the Red and Sabine Rivers in the southeastern United States. Species of concern were identified from wildlife action plans and Web sites. Spatial distributions of fish species and mercury in fillets were delineated using data from states...
Authors
J. A. Jenkins, S. B. Hartley, J. Carter, D. J. Johnson, J. B. Alford
Bank erosion of navigation canals in the western and central Gulf of Mexico Bank erosion of navigation canals in the western and central Gulf of Mexico
Erosion of navigation canal banks is a direct cause of land loss, but there has been little quantitative analysis to determine why certain major canals exhibit faster widening rates (indicative of erosion) than others in the coastal zones of Texas, Louisiana, Mississippi, and Alabama. We hypothesize that navigation canals exhibit varying rates of erosion based on soil properties of the...
Authors
Cindy A. Thatcher, Stephen B. Hartley, Scott A. Wilson
Science and Products
Filter Total Items: 14
Delineation of marsh types and marsh type-change in Coastal Louisiana for 2007 and 2013 Delineation of marsh types and marsh type-change in Coastal Louisiana for 2007 and 2013
The Bureau of Ocean Energy Management (BOEM) researchers often require detailed information regarding emergent marsh vegetation types (i.e., fresh, intermediate, brackish, and saline) for modeling habitat capacities and mitigation. In response, the U.S. Geological Survey, in collaboration with the Bureau of Ocean Energy Management produced a detailed change classification of emergent...
Vegetation, soil, and landscape data Vegetation, soil, and landscape data
The northern Gulf of Mexico coast spans two major climate gradients and represents an excellent natural laboratory for developing climate-influenced ecological models. In this project, we used these zones of remarkable transition to develop macroclimate-based models for quantifying the regional responses of coastal wetland ecosystems to climate variation. In addition to providing...
Filter Total Items: 29
Movements of wild pigs in Louisiana and Mississippi, 2011-13 Movements of wild pigs in Louisiana and Mississippi, 2011-13
The prolific breeding capability, behavioral adaptation, and adverse environmental impacts of invasive wild pigs (Sus scrofa) have increased efforts towards managing their populations and understanding their movements. Currently, little is known about wild pig populations and movements in Louisiana and Mississippi. From 2011 to 2013, the U.S. Geological Survey investigated spatial and...
Authors
Stephen B. Hartley, Buddy L. Goatcher, Sijan Sapkota
Delineation of marsh types of the Texas coast from Corpus Christi Bay to the Sabine River in 2010 Delineation of marsh types of the Texas coast from Corpus Christi Bay to the Sabine River in 2010
Coastal zone managers and researchers often require detailed information regarding emergent marsh vegetation types for modeling habitat capacities and needs of marsh-reliant wildlife (such as waterfowl and alligator). Detailed information on the extent and distribution of marsh vegetation zones throughout the Texas coast has been historically unavailable. In response, the U.S. Geological...
Authors
Nicholas M. Enwright, Stephen B. Hartley, Michael G. Brasher, Jenneke M. Visser, Michael K. Mitchell, Bart M. Ballard, Mark W. Parr, Brady R. Couvillion, Barry C. Wilson
Satellite tracking and geospatial analysis of feral swine and their habitat use in Louisiana and Mississippi Satellite tracking and geospatial analysis of feral swine and their habitat use in Louisiana and Mississippi
Feral swine (Sus scrofa) is an invasive species that was first introduced to the continental United States in the 1500s by European explorers. Also known as feral hogs or feral pigs, the animals typically weigh about 200 pounds (up to 400 pounds), have characteristic tusks up to 3 inches long, are territorial, and live in groups, except for the boars, who are solitary and typically...
Authors
Stephen B. Hartley, Kathryn A. Spear, Buddy L. Goatcher
A catalog of Louisiana's nesting seabird colonies A catalog of Louisiana's nesting seabird colonies
Summarizing his colonial nesting waterbird survey experiences along the northern coast of the Gulf of Mexico in a paper presented to the Colonial Waterbird Group of the Waterbird Society (Portnoy 1978), bird biologist John W. Portnoy stated, “This huge concentration of nesting waterbirds, restricted almost entirely to the wetlands and estuaries of southern Louisiana, is unmatched in all...
Authors
William R. Fontenot, Steve W. Cardiff, Richard A. DeMay, Donna L. Dittmann, Stephen B. Hartley, Clinton W. Jeske, Nicole Lorenz, Thomas C. Michot, Robert Dan Purrington, Michael A. Seymour, William G. Vermillion
A geographic information system tool for aquatic resource conservation in the Red and Sabine River Watersheds of the southeast United States A geographic information system tool for aquatic resource conservation in the Red and Sabine River Watersheds of the southeast United States
Our goal was to build a geographic information system (GIS) tool to enhance modeling and hypothesis testing relevant to watersheds and fish fauna of the Red and Sabine Rivers in the southeastern United States. Species of concern were identified from wildlife action plans and Web sites. Spatial distributions of fish species and mercury in fillets were delineated using data from states...
Authors
J. A. Jenkins, S. B. Hartley, J. Carter, D. J. Johnson, J. B. Alford
Bank erosion of navigation canals in the western and central Gulf of Mexico Bank erosion of navigation canals in the western and central Gulf of Mexico
Erosion of navigation canal banks is a direct cause of land loss, but there has been little quantitative analysis to determine why certain major canals exhibit faster widening rates (indicative of erosion) than others in the coastal zones of Texas, Louisiana, Mississippi, and Alabama. We hypothesize that navigation canals exhibit varying rates of erosion based on soil properties of the...
Authors
Cindy A. Thatcher, Stephen B. Hartley, Scott A. Wilson