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Stephen B Hartley (Former Employee)

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Figure 1. The Conservation Blueprint. Source: South Atlantic LCC

Past and Future Modeling of Ecological Indicators for the South Atlantic Landscape Conservation Cooperative

The South Atlantic Landscape Conservation Cooperative (LCC) has developed a Conservation Blueprint: a “living spatial plan to conserve natural and cultural resources for future generations.” This blueprint is a data-driven plan based on terrestrial, freshwater, marine, and cross-ecosystem indicators to measure the overall health of South Atlantic ecosystems.
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Ecosystems Mission Area, Land Management Research Program, Wetland and Aquatic Research Center
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Past and Future Modeling of Ecological Indicators for the South Atlantic Landscape Conservation Cooperative

The South Atlantic Landscape Conservation Cooperative (LCC) has developed a Conservation Blueprint: a “living spatial plan to conserve natural and cultural resources for future generations.” This blueprint is a data-driven plan based on terrestrial, freshwater, marine, and cross-ecosystem indicators to measure the overall health of South Atlantic ecosystems.
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Aerial view of a southeast Louisiana coastal marsh

Mapping Fresh, Intermediate, Brackish and Saline Marshes in the North Central Gulf of America Coast to Inform Future Projections

Spatial data depicting marsh types (e.g. fresh, intermediate, brackish and saline) for the north-central Gulf of America coast are inconsistent across the region, limiting the ability of conservation planners to model the current and future capacity of the coast to sustain priority species. The goal of this study was to (1) update the resolution of coastal Texas vegetation data to match...
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Climate Adaptation Science Centers
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Mapping Fresh, Intermediate, Brackish and Saline Marshes in the North Central Gulf of America Coast to Inform Future Projections

Spatial data depicting marsh types (e.g. fresh, intermediate, brackish and saline) for the north-central Gulf of America coast are inconsistent across the region, limiting the ability of conservation planners to model the current and future capacity of the coast to sustain priority species. The goal of this study was to (1) update the resolution of coastal Texas vegetation data to match that of Lo
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Salvinia/weevil case study: Using drones to monitor weevil propagation in Salvinia aquatics (ver. 2.0, August 2023)

During summer months, coastal Louisiana is plagued with floating aquatics that fill and block canals and small waterways causing trouble for boaters. This floating aquatic starts growing in the spring and dies off in late summer and early winter months. One natural predator of the Salvinia sp is the weevil that forages on the Salvinia and causes premature die-off. These weevils do exist...
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Wetland and Aquatic Research Center

Local and landscape-scale data describing patterns of coastal wetland loss in the Texas Chenier Plain, U.S.A.

We characterized coastal wetland responses to flooding stress by measuring vegetation cover, wetland elevation and water elevation in healthy and degrading wetlands dominated by Spartina patens. Wetland elevation was measured using real-time kinematic survey methods. Vegetation cover was determined by visual estimation methods, and water elevation was measured using in situ continuous...
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Wetland and Aquatic Research Center

UAS imagery acquisition for McFaddin NWR and J.D. Murphree WMA acquired fall 2017

To document current marsh conditions, imagery was acquired at 350 feet using unmanned aerial systems (UAS) for 6 separate study locations. Three Sites are healthy marsh and three sites are degraded marshes. For each study site, ground control markers were established and surveyed in using Real Time Kinematic (RTK) survey equipment. The imagery collected will be processed to produce a...
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Wetland and Aquatic Research Center

Grassland priority rankings model for the Western Gulf Coastal Plain of Louisiana

The dataset includes Land Use/Land Cover types throughout the Chenier Eco-Region in Southwest Louisiana. Using the 2015 National Aerial Imagery Program (NAIP) dataset (1m) as the basemap, E-Cognition image objects were derived from the multiresolution segmentation algorithm at 75 and 250 segments. Attempts to refine the data training methods using E-cognition, to extrapolate automating...
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Wetland and Aquatic Research Center

Grassland quality and pollinator habitat potential in Southwest Louisiana

Potential pollinator habitat was derived by ranking land use classifications and grassland quality based on ground truthing and remotely sensed features indicative of remnant prairie. High resolution (10m) land use data served as the basemap (Hartley et al 2017) from which most categories were identified. All known prairie remnants, prairie plantings, and clusters of mima mounds were...
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Wetland and Aquatic Research Center

High resolution landcover for the Western Gulf Coastal Plain of Louisiana

The dataset includes Land Use/Land Cover types throughout the Chenier Eco-Region in Southwest Louisiana. Using the 2015 NAIP dataset (1m) as the basemap, E-Cognition image objects were derived from the multiresolution segmentation algorithm at 75 and 250 segments. Attempts to refine the data training methods using E-cognition, to extrapolate automating categories of this information to...
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Wetland and Aquatic Research Center
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Filter Total Items: 29

Climate and plant controls on soil organic matter in coastal wetlands

Coastal wetlands are among the most productive and carbon‐rich ecosystems on Earth. Long‐term carbon storage in coastal wetlands occurs primarily belowground as soil organic matter (SOM). In addition to serving as a carbon sink, SOM influences wetland ecosystem structure, function, and stability. To anticipate and mitigate the effects of climate change, there is a need to advance...
Authors
Michael J. Osland, Christopher A. Gabler, James B. Grace, Richard H. Day, Meagan M McCoy, Jennie L. McLeod, Andrew From, Nicholas Enwright, Laura C. Feher, Camille L. Stagg, Stephen B. Hartley
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Ecosystems Mission Area, Wetland and Aquatic Research Center

Quantifying drivers of wild pig movement across multiple spatial and temporal scales

Background The movement behavior of an animal is determined by extrinsic and intrinsic factors that operate at multiple spatio-temporal scales, yet much of our knowledge of animal movement comes from studies that examine only one or two scales concurrently. Understanding the drivers of animal movement across multiple scales is crucial for understanding the fundamentals of movement...
Authors
Shannon L. Kay, Justin W. Fischer, Andrew J. Monaghan, James C. Beasley, Raoul K. Boughton, Tyler A Campbell, Susan M Cooper, Stephen S. Ditchkoff, Stephen B. Hartley, John C. Kilgo, Samantha M. Wisely, A Christy Wyckoff, Kurt C. Vercauteren, Kim M Pipen
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Ecosystems Mission Area, Wetland and Aquatic Research Center

Performance measures for a Mississippi River reintroduction into the forested wetlands of Maurepas Swamp

The use of freshwater diversions (river reintroductions) from the Mississippi River as a restoration tool to rehabilitate Louisiana coastal wetlands has been promoted widely since the first such diversion at Caernarvon became operational in the early 1990s. To date, aside from the Bonnet Carré Spillway (which is designed and operated for flood control), there are only four operational...
Authors
Ken W. Krauss, Gary P. Shaffer, Richard F. Keim, Jim L. Chambers, William B. Wood, Stephen B. Hartley
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Ecosystems Mission Area, Wetland and Aquatic Research Center , Gulf of America

Delineation of marsh types and marsh-type change in coastal Louisiana for 2007 and 2013

The Bureau of Ocean Energy Management researchers often require detailed information regarding emergent marsh vegetation types (such as fresh, intermediate, brackish, and saline) for modeling habitat capacities and mitigation. In response, the U.S. Geological Survey in cooperation with the Bureau of Ocean Energy Management produced a detailed change classification of emergent marsh...
Authors
Stephen B. Hartley, Brady Couvillion, Nicholas Enwright
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Ecosystems Mission Area, Wetland and Aquatic Research Center

Macroclimatic change expected to transform coastal wetland ecosystems this century

Coastal wetlands, existing at the interface between land and sea, are highly vulnerable to climate change. Macroclimate (for example, temperature and precipitation regimes) greatly influences coastal wetland ecosystem structure and function. However, research on climate change impacts in coastal wetlands has concentrated primarily on sea-level rise and largely ignored macroclimatic...
Authors
Christopher A. Gabler, Michael J. Osland, James B. Grace, Camille L. Stagg, Richard H. Day, Stephen B. Hartley, Nicholas Enwright, Andrew From, Meagan M McCoy, Jennie L. McLeod
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Ecosystems Mission Area, Wetland and Aquatic Research Center

Contact heterogeneities in feral swine: implications for disease management and future research

Contact rates vary widely among individuals in socially structured wildlife populations. Understanding the interplay of factors responsible for this variation is essential for planning effective disease management. Feral swine (Sus scrofa) are a socially structured species which pose an increasing threat to livestock and human health, and little is known about contact structure. We...
Authors
Kim M. Pepin, Amy J. S. Davis, James C. Beasley, Raoul K. Boughton, Tyler A Campbell, Susan M Cooper, Wes Gaston, Stephen B. Hartley, John C. Kilgo, Samantha M. Wisely, Christy Wyckoff, Kurt C. Vercauteren
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Ecosystems Mission Area, Biological Threats and Invasive Species Research Program, Wetland and Aquatic Research Center

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