Gregory Steyer, Ph.D.
Greg Steyer is the USGS Science Advisor for the Gulf of America.
Greg's primary interest is developing ecological indicators, adaptive management approaches, and ecological and landscape models for use in natural resource decision support. For over 30 years, he has worked for State and Federal governments developing monitoring, modeling and research programs for the evaluation of wetland restoration projects and programs.
Greg has developed a comprehensive wetland monitoring network for the Coastal Wetlands Planning, Protection, and Restoration Act (CWPPRA) called the Coastwide Reference Monitoring System, that allows evaluation of the effects of restoration and protection efforts at project, hydrologic basin and coastwide scales. Greg has also developed desktop ecological models for the Louisiana Coastal Area and Louisiana State Master Plan that project over 50 years how wetland vegetation communities and coastal geomorphology will change with and without restoration and protection efforts. Greg is actively involved in working with USGS, DOI and other Gulf of America scientists in developing foundational monitoring and adaptive management programs for the RESTORE Council and Natural Resources Damage Assessment and Restoration Trustee Council. His current research investigates the cumulative effects of multiple restoration projects on coastal landscape change and resilience.
Education and Certifications
Ph.D., Oceanography and Coastal Studies, Louisiana State University, 2008
M.S., Biology, University of Southwestern Louisiana, 1988
B.S., Biology, University of Maryland College Park, 1985
Science and Products
Enhancing Cross-Jurisdictional Adaptive Management in the Gulf
Using an iterative qualitative coding process, WARC researchers are identifying objectives, stressors, and management priorities to support the implementation of adaptive management in restoration programs across the Gulf.
Gulf Coast Ecosystem Restoration Council Monitoring and Assessment Program Development
The National Oceanic and Atmospheric Administration (NOAA) and USGS will jointly lead the development of foundational components for region-wide monitoring.
Structured Decision-Making as a Tool for Coastal Restoration: A Case Study on Ship Island, Mississippi
Barrier islands protect mainland areas from storm surge, but can erode over time and require restoration. Ship Island, a barrier island off the coast of Mississippi, provides an example of this: the island was battered by Hurricane Camille in 1969 and split into two separate islands. As part of the Mississippi Coastal Improvements Program, the U.S. Army Corps of Engineers plans to use
Carbon and Nitrogen content of above- and belowground biomass across a coastal wetland salinity gradient in Louisiana, U.S.A. (2013-2014) Carbon and Nitrogen content of above- and belowground biomass across a coastal wetland salinity gradient in Louisiana, U.S.A. (2013-2014)
Percent total carbon (%TC) and percent total nitrogen (%TN) content of above- and belowground biomass were measured from mixed-species plots in four different wetland types in Coastal Louisiana in July 2013 and July–August 2014 (Stagg et al. 2017). Reference: Stagg, C.L., Schoolmaster, D.R., Piazza, S.C., Snedden, G., Steyer, G.D., Fischenich, C.J., and McComas, R.W., 2017, Primary...
Information supporting a cumulative effects assessment of restoration in barrier island and shoreline systems of the north central Gulf of Mexico Information supporting a cumulative effects assessment of restoration in barrier island and shoreline systems of the north central Gulf of Mexico
Information was gathered to support a cumulative effects assessment of restoration in barrier island and shoreline systems of the north central Gulf of Mexico. Information includes: 1) results from two literature searches to help guide the development of a conceptual model of a barrier island and shoreline system and identify drivers and stressors important to that system, and 2) an...
Estuarine vegetated wetland change scenarios for estuaries in the conterminous United States, 1996–2019 Estuarine vegetated wetland change scenarios for estuaries in the conterminous United States, 1996–2019
This data release contains land cover-derived statistics regarding estuarine vegetated wetland area change within estuary drainage areas along the conterminous U.S. This dataset includes net change in estuarine vegetated wetland area based on National Oceanic and Atmospheric Administration's (NOAA) Coastal Change Assessment Program (C-CAP) 1996 and 2016 land cover data. Net change was...
Synthesis of Gulf Coast Management Plans and Restoration Project Values, Stressors, and Strategies (2020-2021) Synthesis of Gulf Coast Management Plans and Restoration Project Values, Stressors, and Strategies (2020-2021)
Dataset of segments (e.g. phrases, sentences, paragraphs) associated with ecological values, human community values, stressors, or restoration strategies found within Gulf Coast state management plans and restoration project descriptions, collected 2019-2020.
USGS Earthmap Capacity Assessment Dataset USGS Earthmap Capacity Assessment Dataset
The U.S. Geological Survey provides a wide range of scientific information to an even wider group of stakeholders. Understanding what capacities are needed and if and or where these capacities exist across the USGS landscape is critical in moving science to the next level of use, implementation, and visualization. The concept behind the groups organized to conduct and interpret the...
Geomorphic and ecological effects of Hurricanes Katrina and Rita on coastal Louisiana marsh communities Geomorphic and ecological effects of Hurricanes Katrina and Rita on coastal Louisiana marsh communities
Hurricanes Katrina and Rita made landfall in 2005, subjecting the coastal marsh communities of Louisiana to various degrees of exposure. We collected data after the storms at 30 sites within fresh (12), brackish/intermediate (12), and saline (6) marshes to document the effects of saltwater storm surge and sedimentation on marsh community dynamics. The 30 sites were comprised of 15 pairs...
Primary production across a coastal wetland landscape in Louisiana, U.S.A. (2012-2014) Primary production across a coastal wetland landscape in Louisiana, U.S.A. (2012-2014)
Above- and belowground production in coastal wetlands are important contributors to carbon accumulation and ecosystem sustainability. As sea level rises, we can expect shifts to more salt-tolerant communities, which may alter these ecosystem functions and services. Although the direct influence of salinity on species-level primary production has been documented, we lack an understanding...
Predicting landscape effects of Mississippi River diversions on soil organic carbon sequestration Predicting landscape effects of Mississippi River diversions on soil organic carbon sequestration
It contains supporting data from the wetland morphology modeling to support the analysis on the landscape effects of Mississippi River diversions in the context of sea-level rise on soil organic carbon (SOC) sequestration along coastal Louisiana wetlands.
Land area change in coastal Louisiana from 1932 to 2010 Land area change in coastal Louisiana from 1932 to 2010
Coastal Louisiana wetlands make up the seventh largest delta on Earth, contain about 37 percent of the estuarine herbaceous marshes in the conterminous United States, and support the largest commercial fishery in the lower 48 States. These wetlands are in peril because Louisiana currently undergoes about 90 percent of the total coastal wetland loss in the continental United States...
Filter Total Items: 45
Multiscale framework for assessing land cover change on barrier islands from extreme storms and restoration Multiscale framework for assessing land cover change on barrier islands from extreme storms and restoration
Often found along the estuarine-marine interface, barrier islands and mainland coastal zones are shaped by tides, currents, extreme storms, and relative sea-level rise. These systems provide ecosystem services such as storm surge and wave attenuation, erosion protection to inland areas, habitat for fish and wildlife, recreation, and tourism. Given the importance of these ecosystems...
Authors
Nicholas Enwright, P. Soupy Dalyander, Casey M. Stuht, Minoo Han, Margaret L. Palmsten, Theresa M. Davenport, Christopher J. Kingwill, Gregory Steyer, Megan La Peyre
Cumulative effects assessment of restoration programs: A framework to assess achievement of regional and programmatic goals Cumulative effects assessment of restoration programs: A framework to assess achievement of regional and programmatic goals
Increasing global investments focused on conservation and restoration of natural resources aim to address challenges presented by climate change and biodiversity loss. Many restoration and conservation program assessments examine individual actions, assuming additive effects only, failing to acknowledge or capture potential synergistic or antagonistic effects across a region or program...
Authors
T. M. Davenport, D. A. Comba, P. S. Dalyander, Nicholas Enwright, Margaret L. Palmsten, Gregory Steyer, Megan La Peyre
Observing coastal wetland transitions using national land cover products Observing coastal wetland transitions using national land cover products
Over the coming century, climate change and sea-level rise are predicted to cause widespread change to coastal wetlands. Estuarine vegetated wetlands can adapt to sea-level rise through both vertical development (i.e., biophysical feedbacks and sedimentation) and upslope/horizontal migration. Quantifying changes to estuarine vegetated wetlands over time can help to inform current and...
Authors
Nicholas Enwright, Michael Osland, Karen M. Thorne, Glenn R. Guntenspergen, James Grace, Gregory Steyer, Nate Herold, Bogdan Chivoiu, Minoo Han
Identifying shared priorities for a bioregional approach to restoration in the Northern Gulf of Mexico Identifying shared priorities for a bioregional approach to restoration in the Northern Gulf of Mexico
Natural resource management is often challenged with a mismatch between the scale of decision-making and the scale of the biological, ecological, and physical processes that control a system. Bioregional approaches to adaptive management have emerged as an approach to inform natural resource management at ecologically relevant scales and across multi-level governance structures. The...
Authors
Kelly G. Guilbeau, Ann C Hijuelos, Stephanie Romanach, Gregory Steyer
Are we falling short on restoring oysters at a regional scale? Are we falling short on restoring oysters at a regional scale?
Across coastal areas of the northern Gulf of Mexico, the Deepwater Horizon oil spill resulted in significant ecological injury, and over 8 billion USD directed to restoration activities. Oyster restoration projects were implemented with regional goals of restoring oyster abundance, spawning stock, and population resilience. Measuring regional or large-scale ecosystem restoration outcomes
Authors
Megan K. La Peyre, Danielle Aguilar Marshall, Sarah Catherine Leblanc Buie, Ann Hijuelos, Gregory Steyer
Capacity assessment for Earth Monitoring, Analysis, and Prediction (EarthMAP) and future integrated monitoring and predictive science at the U.S. Geological Survey Capacity assessment for Earth Monitoring, Analysis, and Prediction (EarthMAP) and future integrated monitoring and predictive science at the U.S. Geological Survey
Executive Summary Managers of our Nation’s resources face unprecedented challenges driven by the convergence of increasing, competing societal demands and a changing climate that affects the stability, vulnerability, and predictability of those resources. To help meet these challenges, the scientific community must take advantage of all available technologies, data, and integrative Earth...
Authors
Jennifer L. Keisman, Sky Bristol, David S. Brown, Allison K. Flickinger, Gregory L. Gunther, Peter S. Murdoch, MaryLynn Musgrove, John C. Nelson, Gregory D. Steyer, Kathryn A. Thomas, Ian R. Waite
By
Ecosystems Mission Area, Water Resources Mission Area, Science Synthesis, Analysis, and Research Program, Science Analytics and Synthesis (SAS) Program, Energy Resources Program, Maryland-Delaware-D.C. Water Science Center, Geology, Energy & Minerals Science Center, Oklahoma-Texas Water Science Center, Oregon Water Science Center, Southwest Biological Science Center, Upper Midwest Environmental Sciences Center, Wetland and Aquatic Research Center
Louisiana Trustee Implementation Group monitoring and adaptive management strategy (LA TIG MAM Strategy) Louisiana Trustee Implementation Group monitoring and adaptive management strategy (LA TIG MAM Strategy)
The purpose of the Louisiana Trustee Implementation Group (LA TIG) Monitoring and Adaptive Management (MAM) Strategy is to outline an approach for the LA TIG to prioritize MAM activities in Louisiana for effective and efficient evaluation of the restoration of resources injured by the Deepwater Horizon (DWH) oil spill. Working from the Restoration Goals and Restoration Approaches...
Council monitoring and assessment program (CMAP): Common monitoring program attributes and methodologies for the Gulf of Mexico Region Council monitoring and assessment program (CMAP): Common monitoring program attributes and methodologies for the Gulf of Mexico Region
Executive Summary Under the Resources and Ecosystem Sustainability, Tourist Opportunities, and Revived Economies of the Gulf Coast States Act of 2012 (RESTORE Act), the Gulf Coast Ecosystem Restoration Council (RESTORE Council or Council) is required to report on the progress of funded projects and programs. Systematic monitoring of restoration at the project-specific and programmatic...
Authors
Julie Bosch, Heidi B Burkart, Bogdan Chivoiu, Randy Clark, Chris Clement, Nicholas Enwright, Steve Giordano, Chris Jeffrey, Ed Johnson, Rheannon Hart, Sarah D Hile, Jacob S Howell, Claudia Laurenzano, Michael Lee, Terrance McCloskey, Terry McTigue, Michelle B Meyers, Katie E Miller, Scott Mize, Mark E. Monaco, Kevin Owen, Richard Rebich, Samuel H. Rendon, Ali Robertson, Thomas Sample, Kelly Marie Sanks, Gregory Steyer, Kevin Suir, Christopher M. Swarzenski, Hana Rose Thurman
Council monitoring and assessment program (CMAP): A framework for using the monitoring program inventory to conduct gap assessments for the Gulf of Mexico Region Council monitoring and assessment program (CMAP): A framework for using the monitoring program inventory to conduct gap assessments for the Gulf of Mexico Region
Executive Summary Under the Resources and Ecosystem Sustainability, Tourist Opportunities, and Revived Economies of the Gulf Coast States Act of 2012 (RESTORE Act), the Gulf Coast Ecosystem Restoration Council (RESTORE Council or Council) is required to report on the progress of funded projects and programs. Systematic monitoring of restoration at the project-specific and programmatic...
Authors
Julie Bosch, Heidi B Burkart, Bogdan Chivoiu, Randy Clark, Chris Clement, Nicholas Enwright, Steve Giordano, Chris Jeffrey, Ed Johnson, Rheannon Hart, Sarah D Hile, Jacob S Howell, Claudia Laurenzano, Michael Lee, Terrance McCloskey, Terry McTigue, Michelle B Meyers, Katie E Miller, Scott Mize, Mark E. Monaco, Kevin Owen, Richard Rebich, Samuel H. Rendon, Ali Robertson, Thomas Sample, Kelly Marie Sanks, Gregory Steyer, Kevin Suir, Christopher M. Swarzenski, Hana Rose Thurman
Applying cumulative effects to strategically advance large‐scale ecosystem restoration Applying cumulative effects to strategically advance large‐scale ecosystem restoration
International efforts to restore degraded ecosystems will continue to expand over the coming decades, yet the factors contributing to the effectiveness of long‐term restoration across large areas remain largely unexplored. At large scales, outcomes are more complex and synergistic than the additive impacts of individual restoration projects. Here, we propose a cumulative‐effects...
Authors
Heida L. Diefenderfer, Gregory Steyer, Matthew C. Harwell, Andrew J LoSchiavo, Hilary A. Neckles, David M. Burdick, Gary E. Johnson, Kate E. Buenau, Elene Trujillo, John C. Callaway, Ronald M. Thom, Neil K. Ganju, Robert R. Twilley
Louisiana Adaptive Management Status and Improvement Report: Vision and Recommendations Louisiana Adaptive Management Status and Improvement Report: Vision and Recommendations
As part of the process to increase implementation of adaptive management for ecosystem-based coastal restoration within Louisiana, we aim for this report to be broadly applicable across planning processes as well as funding and implementing entities. It compiles technical knowledge and guidance summarized as key findings through the text which lead to eight priority recommendations to...
Authors
Bill Boshart, Morgan Crutcher, Angelina Freeman, Edward Haywood, Syed M. Khalil, Summer Langlois, Darin L. Lee, David Lindquist, Tommy E. McGinnis, James Pahl, Carol Parsons-Richards, Erin Plitsch, Rick Raynie, Robert Routon, Leigh Anne Sharp, John Troutman, Chuck Villarrubia, Todd Folse, Alyson Graugnard, Anne Hawes, Russ Joffrion, Wes Leblanc, Brian Lezina, Jim Pahl, Jody White, Craig Conzelmann, Ann Hijuelos, Sarai Piazza, Kathryn A. Spear, Gregory D. Steyer, Nanciann Regalado, John M. Tirpak, Courtney Schupp, Melissa Carle, Jaclyn Daly, Nicolas Eckhardt, Christy Fellas, Erin M. Fougeres, Stephen Heverly, Stacey Horstman, Jason Kroll, Mel Landry, Barbara A. Schroeder, Eric Weissberger, Sara Wissman, Treda Grayson, Patricia Taylor, Danny Wiegand, Mark Defley, Paulina Kolic, Harris Bienn, Tim J. B. Carruthers, Alyssa Dausman, Alaina Grace, Scott Hemmerling, Andrea Jerabek, Eric White, Ryan Clark, Coleen McHugh, Leland C Moss, Cyndhia Ramatchandirane, Amy Wold
Council monitoring and assessment program (CMAP) compilation of existing habitat and water quality monitoring and mapping assessments for the Gulf of Mexico Region Council monitoring and assessment program (CMAP) compilation of existing habitat and water quality monitoring and mapping assessments for the Gulf of Mexico Region
This report is a deliverable to the RESTORE Council for Task 7: Document the existing baseline habitat and water quality conditions prior to implementation of the restoration projects; these baseline conditions will serve as a basis for measuring change/progress after restoration. It is the second in a series of CMAP reports. The first report describes the process and development of the...
Authors
Julie Bosch, Heidi Burkart, Bogdan Chivoiu, Randy Clark, Chris Clement, Nicholas Enwright, Steve Giordano, Chris Jeffrey, Ed Johnson, Rheannon M. Hart, Sarah Davidson Hile, Jacob Howell, Claudia Laurenzano, Michael T. Lee, Terrence A. McCloskey, Terry McTigue, Michelle B. Meyers, Scott V. Mize, Mark E. Monaco, Kevin Owen, Richard A. Rebich, Samuel H. Rendon, Ali Robertson, Thomas Sample, Gregory D. Steyer, Kevin J. Suir, Christopher M. Swarzenski, Katie Watson
Non-USGS Publications**
Steyer, G.D., Couvillion, B., Wang, H., Sleavin, B., Rybczyk, J., Trahan, N., Beck, H., Fischenich, C., Boustany, R., and Allen, Y. 2012. Landscape change and relative elevation sub-models, Appendix D-2 Wetland Morphology Model Technical Report in Louisiana’s Comprehensive Master Plan for a Sustainable Coast, 104 p.
Casper, Andrew F., Rebecca A. Efroymson, Steven M. Davis, Greg Steyer, and Brian Zettle, 2010, Improving Conceptual Model Development: Avoiding Underperformance Due to Project Uncertainties. ERDC TN-EMRRP-EBA-5, 7 p. The product is available online at http://libweb.erdc.usace.army.mil/Archimages/3263.PDF
Lin, Jeff P., Scott Bourne, Brady Couvillion, Jane M. Smith, Gregg Snedden, Gregory D. Steyer, and Sally L. Yost, 2010, Evaluation of a Method for Measuring Lateral Obscuration of Coastal Marsh Vegetation in Louisiana. ERDC/EL TN-10-2, 15 p. The product is available online at http://el.erdc.usace.army.mil/elpubs/pdf/eltn10-02.pdf
Conzelmann, C., G.D. Steyer, M. Comeaux, and K. Suir. 2009. CRMS Mapping Applications and the Google Maps Application Programming Interface (API): An Alternative to the Traditional Web Form. The product is available online at http://cs.tamucc.edu/dim/docs/papers/Craig%20Conzelmann.doc
Twilley, R.R., B.R. Couvillion, I. Hossain, C. Kaiser, A.B. Owens, G.D. Steyer, and J.M. Visser. 2008. Coastal Louisiana Ecosystem Assessment and Restoration Program: The Role of Ecosystem Forecasting in Evaluating Restoration Planning in the Mississippi River Deltaic Plain. American Fisheries Society Symposium 64:29-46.
Steyer, G.D., A.B. Owens, and B.R. Couvillion. 2006. Data Collection Network to Support Ecosystem Forecasting for the Barataria Basin – Mississippi River Domain. Coastal Environment and Water Quality (ed. By Y.J. Xu & V.P. Singh), 431-442. Water Resources Publications, LLC, Highlands Ranch, CO 80163-0026, USA.
Steyer, G.D., R.R. Twilley and R.C. Raynie. 2006. An Integrated Monitoring Approach Using Multiple Reference Sites to Assess Sustainable Restoration in Coastal Louisiana. Pages 326 – 333 In Aguirre-Bravo, C., Pellicane, Patrick J., Burns, Denver P., and Draggan, Sidney (Eds.) Monitoring Science and Technology Symposium: Unifying Knowledge for Sustainability in the Western Hemisphere. 2004 September 20-24, Denver, CO. Proceedings RMRS-P-42CD, Fort Collins, CO, U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. 990 p.
Day, J., J. Barras, E. Clairain, J. Johnston, D. Justic, G. Kemp, J. Ko, R. Lane, W. Mitsch, G. Steyer, P. Templet, and A. Yanez-Arancibia. 2005. Implications of Global Climatic Change and Energy Cost and Availability for the Restoration of the Mississippi Delta. Ecological Engineering. 24:253-265.
Day, J., P. Templet, J. Ko, W. Mitsch, G.P. Kemp, J. Johnston, G. Steyer, J. Barras, D. Justic, E. Clairain, and R. Theriot. 2004. The Mississippi Delta: System Functioning, Environmental Impacts, and Sustainable Management. Pages 851-880. In: Caso, M., I. Pisanty, and E. Ezcurra (eds). Environmental Diagnosis of the Gulf of Mexico. Vol. 2. National Institute of Ecology, Dept. of Environment and Natural Resources of Mexico, Mexico City, Mexico.
Ko, J., J. Day, J. Barras, R. Morton , J. Johnston, G. Steyer, G.P. Kemp, E. Clairain, and R. Theriot. 2004. Impacts of Oil and Gas Activities on Coastal Wetland loss in the Mississippi Delta. Pages 957-977 In: Caso, M., I. Pisanty, and E. Ezcurra (eds). Environmental Diagnosis of the Gulf of Mexico. Vol. 2. National Institute of Ecology, Dept. of Environment and Natural Resources of Mexico, Mexico City, Mexico.
Steyer, G.D., C.E. Sasser, J.M. Visser, E.M. Swenson, J.A. Nyman, and R.C. Raynie. 2003. A Proposed Coast-wide Reference Monitoring System for Evaluating Wetland Restoration Trajectories in Louisiana. Environmental Monitoring and Assessment. 81:107-117.
Summers, J.K., and G.D. Steyer. 2000. A Framework for an Integrated and Comprehensive Monitoring Plan for the Estuaries of the Gulf of Mexico. U. S. Environmental Protection Agency, Office of Research and Development, National Health and Environmental Effects Research Laboratory, Gulf Ecology Division, Gulf Breeze, Florida. EPA 620-R-00-006.
Steyer, G.D. and D.W. Llewellyn. 2000. Coastal Wetlands Planning, Protection, and Restoration Act: A Programmatic Application of Adaptive Management. Ecological Engineering. 15: 385-395.
Johnston, J.B., J. Barras, S. Hartley, D.A. Fuller, and G. Steyer. 1998. The integration of GIS and image processing technology for monitoring wetland restoration projects. Pages 607-616 in: McComb, A.J., and J.A. Davis, editors. Wetlands for the Future: INTECOL’S V International Wetlands Conference, Perth, Australia.
Steyer, G.D., D. Fuller, and J. Barras. 1995. The integration of GIS and image processing technology with continuous and real-time data collection for monitoring wetland restoration projects. National Interagency Workshop on Wetlands, New Orleans, LA.
Cahoon, D.R., D.J. Reed, J.W. Day, Jr., G.D. Steyer, R.M. Boumans, J.C. Lynch, D. McNally, and N. Latif. 1995. The influence of Hurricane Andrew on sediment distribution in Louisiana coastal marshes. Journal of Coastal Research. SI 21: 280-294.
Guntenspergen, G.R., D.R. Cahoon, J. Grace, G.D. Steyer, S. Fournet, M.A. Townson, and A.L. Foote. 1995. Disturbance and recovery of the Louisiana coastal marsh landscape from the impacts of Hurricane Andrew. Journal of Coastal Research. SI 21: 324-339.
Steyer, G.D., C.I. Simon, and S.G. Underwood. 1993. A resource management approach for evaluating the effectiveness of wetland restoration projects. Pages 742-745 in: Landin, M.C., editor. Wetlands: Proceedings of the 13th Annual Conference of the Society of Wetland Scientists, New Orleans, LA. South Central Chapter, Society of Wetland Scientists, Utica, MS.
Stone, G.W., J.M. Grymes, III, K.D. Robbins, S.G. Underwood, G.D. Steyer, and R.A. Muller. 1993. A chronologic overview of climatological and hydrological aspects associated with Hurricane Andrew and its morphological effects along the Louisiana coast, USA. Shore and Beach. 61(2): 2-12.
Trepagnier, C.M., B. Good, G.D. Steyer, and W. B. Sutton. 1993. Evaluation of three crevasse splay marsh creation projects at the Mississippi River delta. Pages 115-119 in: Landin, M.C., editor. Wetlands: Proceedings of the 13th Annual Conference of the Society of Wetland Scientists, New Orleans, LA. South Central Chapter, Society of Wetland Scientists, Utica, MS.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Louisiana’s Coastwide Reference Monitoring System (CRMS) Louisiana’s Coastwide Reference Monitoring System (CRMS)
The CRMS network includes 391 sites with standardized data collection techniques and fixed sampling schedules. Monitoring data including hydrologic, accretion, herbaceous marsh vegetation, forested swamp vegetation, soil properties, surface elevation, and land/water composition are available for download from the CRMS website.
Science and Products
Enhancing Cross-Jurisdictional Adaptive Management in the Gulf
Using an iterative qualitative coding process, WARC researchers are identifying objectives, stressors, and management priorities to support the implementation of adaptive management in restoration programs across the Gulf.
Gulf Coast Ecosystem Restoration Council Monitoring and Assessment Program Development
The National Oceanic and Atmospheric Administration (NOAA) and USGS will jointly lead the development of foundational components for region-wide monitoring.
Structured Decision-Making as a Tool for Coastal Restoration: A Case Study on Ship Island, Mississippi
Barrier islands protect mainland areas from storm surge, but can erode over time and require restoration. Ship Island, a barrier island off the coast of Mississippi, provides an example of this: the island was battered by Hurricane Camille in 1969 and split into two separate islands. As part of the Mississippi Coastal Improvements Program, the U.S. Army Corps of Engineers plans to use
Carbon and Nitrogen content of above- and belowground biomass across a coastal wetland salinity gradient in Louisiana, U.S.A. (2013-2014) Carbon and Nitrogen content of above- and belowground biomass across a coastal wetland salinity gradient in Louisiana, U.S.A. (2013-2014)
Percent total carbon (%TC) and percent total nitrogen (%TN) content of above- and belowground biomass were measured from mixed-species plots in four different wetland types in Coastal Louisiana in July 2013 and July–August 2014 (Stagg et al. 2017). Reference: Stagg, C.L., Schoolmaster, D.R., Piazza, S.C., Snedden, G., Steyer, G.D., Fischenich, C.J., and McComas, R.W., 2017, Primary...
Information supporting a cumulative effects assessment of restoration in barrier island and shoreline systems of the north central Gulf of Mexico Information supporting a cumulative effects assessment of restoration in barrier island and shoreline systems of the north central Gulf of Mexico
Information was gathered to support a cumulative effects assessment of restoration in barrier island and shoreline systems of the north central Gulf of Mexico. Information includes: 1) results from two literature searches to help guide the development of a conceptual model of a barrier island and shoreline system and identify drivers and stressors important to that system, and 2) an...
Estuarine vegetated wetland change scenarios for estuaries in the conterminous United States, 1996–2019 Estuarine vegetated wetland change scenarios for estuaries in the conterminous United States, 1996–2019
This data release contains land cover-derived statistics regarding estuarine vegetated wetland area change within estuary drainage areas along the conterminous U.S. This dataset includes net change in estuarine vegetated wetland area based on National Oceanic and Atmospheric Administration's (NOAA) Coastal Change Assessment Program (C-CAP) 1996 and 2016 land cover data. Net change was...
Synthesis of Gulf Coast Management Plans and Restoration Project Values, Stressors, and Strategies (2020-2021) Synthesis of Gulf Coast Management Plans and Restoration Project Values, Stressors, and Strategies (2020-2021)
Dataset of segments (e.g. phrases, sentences, paragraphs) associated with ecological values, human community values, stressors, or restoration strategies found within Gulf Coast state management plans and restoration project descriptions, collected 2019-2020.
USGS Earthmap Capacity Assessment Dataset USGS Earthmap Capacity Assessment Dataset
The U.S. Geological Survey provides a wide range of scientific information to an even wider group of stakeholders. Understanding what capacities are needed and if and or where these capacities exist across the USGS landscape is critical in moving science to the next level of use, implementation, and visualization. The concept behind the groups organized to conduct and interpret the...
Geomorphic and ecological effects of Hurricanes Katrina and Rita on coastal Louisiana marsh communities Geomorphic and ecological effects of Hurricanes Katrina and Rita on coastal Louisiana marsh communities
Hurricanes Katrina and Rita made landfall in 2005, subjecting the coastal marsh communities of Louisiana to various degrees of exposure. We collected data after the storms at 30 sites within fresh (12), brackish/intermediate (12), and saline (6) marshes to document the effects of saltwater storm surge and sedimentation on marsh community dynamics. The 30 sites were comprised of 15 pairs...
Primary production across a coastal wetland landscape in Louisiana, U.S.A. (2012-2014) Primary production across a coastal wetland landscape in Louisiana, U.S.A. (2012-2014)
Above- and belowground production in coastal wetlands are important contributors to carbon accumulation and ecosystem sustainability. As sea level rises, we can expect shifts to more salt-tolerant communities, which may alter these ecosystem functions and services. Although the direct influence of salinity on species-level primary production has been documented, we lack an understanding...
Predicting landscape effects of Mississippi River diversions on soil organic carbon sequestration Predicting landscape effects of Mississippi River diversions on soil organic carbon sequestration
It contains supporting data from the wetland morphology modeling to support the analysis on the landscape effects of Mississippi River diversions in the context of sea-level rise on soil organic carbon (SOC) sequestration along coastal Louisiana wetlands.
Land area change in coastal Louisiana from 1932 to 2010 Land area change in coastal Louisiana from 1932 to 2010
Coastal Louisiana wetlands make up the seventh largest delta on Earth, contain about 37 percent of the estuarine herbaceous marshes in the conterminous United States, and support the largest commercial fishery in the lower 48 States. These wetlands are in peril because Louisiana currently undergoes about 90 percent of the total coastal wetland loss in the continental United States...
Filter Total Items: 45
Multiscale framework for assessing land cover change on barrier islands from extreme storms and restoration Multiscale framework for assessing land cover change on barrier islands from extreme storms and restoration
Often found along the estuarine-marine interface, barrier islands and mainland coastal zones are shaped by tides, currents, extreme storms, and relative sea-level rise. These systems provide ecosystem services such as storm surge and wave attenuation, erosion protection to inland areas, habitat for fish and wildlife, recreation, and tourism. Given the importance of these ecosystems...
Authors
Nicholas Enwright, P. Soupy Dalyander, Casey M. Stuht, Minoo Han, Margaret L. Palmsten, Theresa M. Davenport, Christopher J. Kingwill, Gregory Steyer, Megan La Peyre
Cumulative effects assessment of restoration programs: A framework to assess achievement of regional and programmatic goals Cumulative effects assessment of restoration programs: A framework to assess achievement of regional and programmatic goals
Increasing global investments focused on conservation and restoration of natural resources aim to address challenges presented by climate change and biodiversity loss. Many restoration and conservation program assessments examine individual actions, assuming additive effects only, failing to acknowledge or capture potential synergistic or antagonistic effects across a region or program...
Authors
T. M. Davenport, D. A. Comba, P. S. Dalyander, Nicholas Enwright, Margaret L. Palmsten, Gregory Steyer, Megan La Peyre
Observing coastal wetland transitions using national land cover products Observing coastal wetland transitions using national land cover products
Over the coming century, climate change and sea-level rise are predicted to cause widespread change to coastal wetlands. Estuarine vegetated wetlands can adapt to sea-level rise through both vertical development (i.e., biophysical feedbacks and sedimentation) and upslope/horizontal migration. Quantifying changes to estuarine vegetated wetlands over time can help to inform current and...
Authors
Nicholas Enwright, Michael Osland, Karen M. Thorne, Glenn R. Guntenspergen, James Grace, Gregory Steyer, Nate Herold, Bogdan Chivoiu, Minoo Han
Identifying shared priorities for a bioregional approach to restoration in the Northern Gulf of Mexico Identifying shared priorities for a bioregional approach to restoration in the Northern Gulf of Mexico
Natural resource management is often challenged with a mismatch between the scale of decision-making and the scale of the biological, ecological, and physical processes that control a system. Bioregional approaches to adaptive management have emerged as an approach to inform natural resource management at ecologically relevant scales and across multi-level governance structures. The...
Authors
Kelly G. Guilbeau, Ann C Hijuelos, Stephanie Romanach, Gregory Steyer
Are we falling short on restoring oysters at a regional scale? Are we falling short on restoring oysters at a regional scale?
Across coastal areas of the northern Gulf of Mexico, the Deepwater Horizon oil spill resulted in significant ecological injury, and over 8 billion USD directed to restoration activities. Oyster restoration projects were implemented with regional goals of restoring oyster abundance, spawning stock, and population resilience. Measuring regional or large-scale ecosystem restoration outcomes
Authors
Megan K. La Peyre, Danielle Aguilar Marshall, Sarah Catherine Leblanc Buie, Ann Hijuelos, Gregory Steyer
Capacity assessment for Earth Monitoring, Analysis, and Prediction (EarthMAP) and future integrated monitoring and predictive science at the U.S. Geological Survey Capacity assessment for Earth Monitoring, Analysis, and Prediction (EarthMAP) and future integrated monitoring and predictive science at the U.S. Geological Survey
Executive Summary Managers of our Nation’s resources face unprecedented challenges driven by the convergence of increasing, competing societal demands and a changing climate that affects the stability, vulnerability, and predictability of those resources. To help meet these challenges, the scientific community must take advantage of all available technologies, data, and integrative Earth...
Authors
Jennifer L. Keisman, Sky Bristol, David S. Brown, Allison K. Flickinger, Gregory L. Gunther, Peter S. Murdoch, MaryLynn Musgrove, John C. Nelson, Gregory D. Steyer, Kathryn A. Thomas, Ian R. Waite
By
Ecosystems Mission Area, Water Resources Mission Area, Science Synthesis, Analysis, and Research Program, Science Analytics and Synthesis (SAS) Program, Energy Resources Program, Maryland-Delaware-D.C. Water Science Center, Geology, Energy & Minerals Science Center, Oklahoma-Texas Water Science Center, Oregon Water Science Center, Southwest Biological Science Center, Upper Midwest Environmental Sciences Center, Wetland and Aquatic Research Center
Louisiana Trustee Implementation Group monitoring and adaptive management strategy (LA TIG MAM Strategy) Louisiana Trustee Implementation Group monitoring and adaptive management strategy (LA TIG MAM Strategy)
The purpose of the Louisiana Trustee Implementation Group (LA TIG) Monitoring and Adaptive Management (MAM) Strategy is to outline an approach for the LA TIG to prioritize MAM activities in Louisiana for effective and efficient evaluation of the restoration of resources injured by the Deepwater Horizon (DWH) oil spill. Working from the Restoration Goals and Restoration Approaches...
Council monitoring and assessment program (CMAP): Common monitoring program attributes and methodologies for the Gulf of Mexico Region Council monitoring and assessment program (CMAP): Common monitoring program attributes and methodologies for the Gulf of Mexico Region
Executive Summary Under the Resources and Ecosystem Sustainability, Tourist Opportunities, and Revived Economies of the Gulf Coast States Act of 2012 (RESTORE Act), the Gulf Coast Ecosystem Restoration Council (RESTORE Council or Council) is required to report on the progress of funded projects and programs. Systematic monitoring of restoration at the project-specific and programmatic...
Authors
Julie Bosch, Heidi B Burkart, Bogdan Chivoiu, Randy Clark, Chris Clement, Nicholas Enwright, Steve Giordano, Chris Jeffrey, Ed Johnson, Rheannon Hart, Sarah D Hile, Jacob S Howell, Claudia Laurenzano, Michael Lee, Terrance McCloskey, Terry McTigue, Michelle B Meyers, Katie E Miller, Scott Mize, Mark E. Monaco, Kevin Owen, Richard Rebich, Samuel H. Rendon, Ali Robertson, Thomas Sample, Kelly Marie Sanks, Gregory Steyer, Kevin Suir, Christopher M. Swarzenski, Hana Rose Thurman
Council monitoring and assessment program (CMAP): A framework for using the monitoring program inventory to conduct gap assessments for the Gulf of Mexico Region Council monitoring and assessment program (CMAP): A framework for using the monitoring program inventory to conduct gap assessments for the Gulf of Mexico Region
Executive Summary Under the Resources and Ecosystem Sustainability, Tourist Opportunities, and Revived Economies of the Gulf Coast States Act of 2012 (RESTORE Act), the Gulf Coast Ecosystem Restoration Council (RESTORE Council or Council) is required to report on the progress of funded projects and programs. Systematic monitoring of restoration at the project-specific and programmatic...
Authors
Julie Bosch, Heidi B Burkart, Bogdan Chivoiu, Randy Clark, Chris Clement, Nicholas Enwright, Steve Giordano, Chris Jeffrey, Ed Johnson, Rheannon Hart, Sarah D Hile, Jacob S Howell, Claudia Laurenzano, Michael Lee, Terrance McCloskey, Terry McTigue, Michelle B Meyers, Katie E Miller, Scott Mize, Mark E. Monaco, Kevin Owen, Richard Rebich, Samuel H. Rendon, Ali Robertson, Thomas Sample, Kelly Marie Sanks, Gregory Steyer, Kevin Suir, Christopher M. Swarzenski, Hana Rose Thurman
Applying cumulative effects to strategically advance large‐scale ecosystem restoration Applying cumulative effects to strategically advance large‐scale ecosystem restoration
International efforts to restore degraded ecosystems will continue to expand over the coming decades, yet the factors contributing to the effectiveness of long‐term restoration across large areas remain largely unexplored. At large scales, outcomes are more complex and synergistic than the additive impacts of individual restoration projects. Here, we propose a cumulative‐effects...
Authors
Heida L. Diefenderfer, Gregory Steyer, Matthew C. Harwell, Andrew J LoSchiavo, Hilary A. Neckles, David M. Burdick, Gary E. Johnson, Kate E. Buenau, Elene Trujillo, John C. Callaway, Ronald M. Thom, Neil K. Ganju, Robert R. Twilley
Louisiana Adaptive Management Status and Improvement Report: Vision and Recommendations Louisiana Adaptive Management Status and Improvement Report: Vision and Recommendations
As part of the process to increase implementation of adaptive management for ecosystem-based coastal restoration within Louisiana, we aim for this report to be broadly applicable across planning processes as well as funding and implementing entities. It compiles technical knowledge and guidance summarized as key findings through the text which lead to eight priority recommendations to...
Authors
Bill Boshart, Morgan Crutcher, Angelina Freeman, Edward Haywood, Syed M. Khalil, Summer Langlois, Darin L. Lee, David Lindquist, Tommy E. McGinnis, James Pahl, Carol Parsons-Richards, Erin Plitsch, Rick Raynie, Robert Routon, Leigh Anne Sharp, John Troutman, Chuck Villarrubia, Todd Folse, Alyson Graugnard, Anne Hawes, Russ Joffrion, Wes Leblanc, Brian Lezina, Jim Pahl, Jody White, Craig Conzelmann, Ann Hijuelos, Sarai Piazza, Kathryn A. Spear, Gregory D. Steyer, Nanciann Regalado, John M. Tirpak, Courtney Schupp, Melissa Carle, Jaclyn Daly, Nicolas Eckhardt, Christy Fellas, Erin M. Fougeres, Stephen Heverly, Stacey Horstman, Jason Kroll, Mel Landry, Barbara A. Schroeder, Eric Weissberger, Sara Wissman, Treda Grayson, Patricia Taylor, Danny Wiegand, Mark Defley, Paulina Kolic, Harris Bienn, Tim J. B. Carruthers, Alyssa Dausman, Alaina Grace, Scott Hemmerling, Andrea Jerabek, Eric White, Ryan Clark, Coleen McHugh, Leland C Moss, Cyndhia Ramatchandirane, Amy Wold
Council monitoring and assessment program (CMAP) compilation of existing habitat and water quality monitoring and mapping assessments for the Gulf of Mexico Region Council monitoring and assessment program (CMAP) compilation of existing habitat and water quality monitoring and mapping assessments for the Gulf of Mexico Region
This report is a deliverable to the RESTORE Council for Task 7: Document the existing baseline habitat and water quality conditions prior to implementation of the restoration projects; these baseline conditions will serve as a basis for measuring change/progress after restoration. It is the second in a series of CMAP reports. The first report describes the process and development of the...
Authors
Julie Bosch, Heidi Burkart, Bogdan Chivoiu, Randy Clark, Chris Clement, Nicholas Enwright, Steve Giordano, Chris Jeffrey, Ed Johnson, Rheannon M. Hart, Sarah Davidson Hile, Jacob Howell, Claudia Laurenzano, Michael T. Lee, Terrence A. McCloskey, Terry McTigue, Michelle B. Meyers, Scott V. Mize, Mark E. Monaco, Kevin Owen, Richard A. Rebich, Samuel H. Rendon, Ali Robertson, Thomas Sample, Gregory D. Steyer, Kevin J. Suir, Christopher M. Swarzenski, Katie Watson
Non-USGS Publications**
Steyer, G.D., Couvillion, B., Wang, H., Sleavin, B., Rybczyk, J., Trahan, N., Beck, H., Fischenich, C., Boustany, R., and Allen, Y. 2012. Landscape change and relative elevation sub-models, Appendix D-2 Wetland Morphology Model Technical Report in Louisiana’s Comprehensive Master Plan for a Sustainable Coast, 104 p.
Casper, Andrew F., Rebecca A. Efroymson, Steven M. Davis, Greg Steyer, and Brian Zettle, 2010, Improving Conceptual Model Development: Avoiding Underperformance Due to Project Uncertainties. ERDC TN-EMRRP-EBA-5, 7 p. The product is available online at http://libweb.erdc.usace.army.mil/Archimages/3263.PDF
Lin, Jeff P., Scott Bourne, Brady Couvillion, Jane M. Smith, Gregg Snedden, Gregory D. Steyer, and Sally L. Yost, 2010, Evaluation of a Method for Measuring Lateral Obscuration of Coastal Marsh Vegetation in Louisiana. ERDC/EL TN-10-2, 15 p. The product is available online at http://el.erdc.usace.army.mil/elpubs/pdf/eltn10-02.pdf
Conzelmann, C., G.D. Steyer, M. Comeaux, and K. Suir. 2009. CRMS Mapping Applications and the Google Maps Application Programming Interface (API): An Alternative to the Traditional Web Form. The product is available online at http://cs.tamucc.edu/dim/docs/papers/Craig%20Conzelmann.doc
Twilley, R.R., B.R. Couvillion, I. Hossain, C. Kaiser, A.B. Owens, G.D. Steyer, and J.M. Visser. 2008. Coastal Louisiana Ecosystem Assessment and Restoration Program: The Role of Ecosystem Forecasting in Evaluating Restoration Planning in the Mississippi River Deltaic Plain. American Fisheries Society Symposium 64:29-46.
Steyer, G.D., A.B. Owens, and B.R. Couvillion. 2006. Data Collection Network to Support Ecosystem Forecasting for the Barataria Basin – Mississippi River Domain. Coastal Environment and Water Quality (ed. By Y.J. Xu & V.P. Singh), 431-442. Water Resources Publications, LLC, Highlands Ranch, CO 80163-0026, USA.
Steyer, G.D., R.R. Twilley and R.C. Raynie. 2006. An Integrated Monitoring Approach Using Multiple Reference Sites to Assess Sustainable Restoration in Coastal Louisiana. Pages 326 – 333 In Aguirre-Bravo, C., Pellicane, Patrick J., Burns, Denver P., and Draggan, Sidney (Eds.) Monitoring Science and Technology Symposium: Unifying Knowledge for Sustainability in the Western Hemisphere. 2004 September 20-24, Denver, CO. Proceedings RMRS-P-42CD, Fort Collins, CO, U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. 990 p.
Day, J., J. Barras, E. Clairain, J. Johnston, D. Justic, G. Kemp, J. Ko, R. Lane, W. Mitsch, G. Steyer, P. Templet, and A. Yanez-Arancibia. 2005. Implications of Global Climatic Change and Energy Cost and Availability for the Restoration of the Mississippi Delta. Ecological Engineering. 24:253-265.
Day, J., P. Templet, J. Ko, W. Mitsch, G.P. Kemp, J. Johnston, G. Steyer, J. Barras, D. Justic, E. Clairain, and R. Theriot. 2004. The Mississippi Delta: System Functioning, Environmental Impacts, and Sustainable Management. Pages 851-880. In: Caso, M., I. Pisanty, and E. Ezcurra (eds). Environmental Diagnosis of the Gulf of Mexico. Vol. 2. National Institute of Ecology, Dept. of Environment and Natural Resources of Mexico, Mexico City, Mexico.
Ko, J., J. Day, J. Barras, R. Morton , J. Johnston, G. Steyer, G.P. Kemp, E. Clairain, and R. Theriot. 2004. Impacts of Oil and Gas Activities on Coastal Wetland loss in the Mississippi Delta. Pages 957-977 In: Caso, M., I. Pisanty, and E. Ezcurra (eds). Environmental Diagnosis of the Gulf of Mexico. Vol. 2. National Institute of Ecology, Dept. of Environment and Natural Resources of Mexico, Mexico City, Mexico.
Steyer, G.D., C.E. Sasser, J.M. Visser, E.M. Swenson, J.A. Nyman, and R.C. Raynie. 2003. A Proposed Coast-wide Reference Monitoring System for Evaluating Wetland Restoration Trajectories in Louisiana. Environmental Monitoring and Assessment. 81:107-117.
Summers, J.K., and G.D. Steyer. 2000. A Framework for an Integrated and Comprehensive Monitoring Plan for the Estuaries of the Gulf of Mexico. U. S. Environmental Protection Agency, Office of Research and Development, National Health and Environmental Effects Research Laboratory, Gulf Ecology Division, Gulf Breeze, Florida. EPA 620-R-00-006.
Steyer, G.D. and D.W. Llewellyn. 2000. Coastal Wetlands Planning, Protection, and Restoration Act: A Programmatic Application of Adaptive Management. Ecological Engineering. 15: 385-395.
Johnston, J.B., J. Barras, S. Hartley, D.A. Fuller, and G. Steyer. 1998. The integration of GIS and image processing technology for monitoring wetland restoration projects. Pages 607-616 in: McComb, A.J., and J.A. Davis, editors. Wetlands for the Future: INTECOL’S V International Wetlands Conference, Perth, Australia.
Steyer, G.D., D. Fuller, and J. Barras. 1995. The integration of GIS and image processing technology with continuous and real-time data collection for monitoring wetland restoration projects. National Interagency Workshop on Wetlands, New Orleans, LA.
Cahoon, D.R., D.J. Reed, J.W. Day, Jr., G.D. Steyer, R.M. Boumans, J.C. Lynch, D. McNally, and N. Latif. 1995. The influence of Hurricane Andrew on sediment distribution in Louisiana coastal marshes. Journal of Coastal Research. SI 21: 280-294.
Guntenspergen, G.R., D.R. Cahoon, J. Grace, G.D. Steyer, S. Fournet, M.A. Townson, and A.L. Foote. 1995. Disturbance and recovery of the Louisiana coastal marsh landscape from the impacts of Hurricane Andrew. Journal of Coastal Research. SI 21: 324-339.
Steyer, G.D., C.I. Simon, and S.G. Underwood. 1993. A resource management approach for evaluating the effectiveness of wetland restoration projects. Pages 742-745 in: Landin, M.C., editor. Wetlands: Proceedings of the 13th Annual Conference of the Society of Wetland Scientists, New Orleans, LA. South Central Chapter, Society of Wetland Scientists, Utica, MS.
Stone, G.W., J.M. Grymes, III, K.D. Robbins, S.G. Underwood, G.D. Steyer, and R.A. Muller. 1993. A chronologic overview of climatological and hydrological aspects associated with Hurricane Andrew and its morphological effects along the Louisiana coast, USA. Shore and Beach. 61(2): 2-12.
Trepagnier, C.M., B. Good, G.D. Steyer, and W. B. Sutton. 1993. Evaluation of three crevasse splay marsh creation projects at the Mississippi River delta. Pages 115-119 in: Landin, M.C., editor. Wetlands: Proceedings of the 13th Annual Conference of the Society of Wetland Scientists, New Orleans, LA. South Central Chapter, Society of Wetland Scientists, Utica, MS.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Louisiana’s Coastwide Reference Monitoring System (CRMS) Louisiana’s Coastwide Reference Monitoring System (CRMS)
The CRMS network includes 391 sites with standardized data collection techniques and fixed sampling schedules. Monitoring data including hydrologic, accretion, herbaceous marsh vegetation, forested swamp vegetation, soil properties, surface elevation, and land/water composition are available for download from the CRMS website.