Gregory Steyer, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 45
Council Monitoring and Assessment Program (CMAP): Inventory of existing water quality and habitat monitoring, and mapping metadata for Gulf of Mexico Programs Council Monitoring and Assessment Program (CMAP): Inventory of existing water quality and habitat monitoring, and mapping metadata for Gulf of Mexico Programs
Under the Council-Selected Restoration Component of the RESTORE Act, the Council develops Funded Priority Lists (FPLs) that describe the projects and programs it will fund. Projects and programs funded through this component must be in furtherance of the goals and objectives of the Council’s Comprehensive Plan and address at least one of the restoration criteria identified in the RESTORE...
Authors
Julie Bosch, Heidi Burkart, Bogdan Chivoiu, Randy Clark, Chris Clement, Nicholas Enwright, Steve Giordano, Chris Jeffrey, Edward Johnson, Rheannon M. Hart, Sarah Hile, Jacob Howell, Claudia Laurenzano, Michael T. Lee, Terrence A. McCloskey, Terry McTigue, Michelle B. Meyers, Scott 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
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
Predicting landscape effects of Mississippi River diversions on soil organic carbon sequestration Predicting landscape effects of Mississippi River diversions on soil organic carbon sequestration
Large Mississippi River (MR) diversions (peak water flow >1416 m3/s and sediment loads >165 kg/s) have been proposed as part of a suite of coastal restoration projects and are expected to rehabilitate and rebuild wetlands to alleviate the significant historic wetland loss in coastal Louisiana. These coastal wetlands are undergoing increasing eustatic sea‐level rise, land subsidence...
Authors
Hongqing Wang, Gregory D. Steyer, Brady Couvillion, Holly J. Beck, John M Rybczyk, Victor H. Rivera-Monroy, Ken W. Krauss, Jenneke M. Visser
Assessing coastal wetland vulnerability to sea-level rise along the northern Gulf of Mexico coast: Gaps and opportunities for developing a coordinated regional sampling network Assessing coastal wetland vulnerability to sea-level rise along the northern Gulf of Mexico coast: Gaps and opportunities for developing a coordinated regional sampling network
Coastal wetland responses to sea-level rise are greatly influenced by biogeomorphic processes that affect wetland surface elevation. Small changes in elevation relative to sea level can lead to comparatively large changes in ecosystem structure, function, and stability. The surface elevation table-marker horizon (SET-MH) approach is being used globally to quantify the relative...
Authors
Michael J. Osland, Kereen T. Griffith, Jack C. Larriviere, Laura C. Feher, Donald R. Cahoon, Nicholas M. Enwright, David A. Oster, John M. Tirpak, Mark S. Woodrey, Renee C. Collini, Joseph J. Baustian, Joshua L. Breithaupt, Julia A Cherry, Jeremy R. Conrad, Nicole Cormier, Carlos A. Coronado-Molina, Joseph F. Donoghue, Sean A. Graham, Jennifer W. Harper, Mark W. Hester, Rebecca J. Howard, Ken W. Krauss, Daniel Kroes, Robert R. Lane, Karen L. McKee, Irving A. Mendelssohn, Beth A. Middleton, Jena A. Moon, Sarai Piazza, Nicole M. Rankin, Fred H. Sklar, Gregory D. Steyer, Kathleen M. Swanson, Christopher M. Swarzenski, William Vervaeke, Jonathan M Willis, K. Van Wilson
Determining the spatial variability of wetland soil bulk density, organic matter, and the conversion factor between organic matter and organic carbon across coastal Louisiana, U.S.A. Determining the spatial variability of wetland soil bulk density, organic matter, and the conversion factor between organic matter and organic carbon across coastal Louisiana, U.S.A.
Soil bulk density (BD), soil organic matter (SOM) content, and a conversion factor between SOM and soil organic carbon (SOC) are often used in estimating SOC sequestration and storage. Spatial variability in BD, SOM, and the SOM–SOC conversion factor affects the ability to accurately estimate SOC sequestration, storage, and the benefits (e.g., land building area and vertical accretion)...
Authors
Hongqing Wang, Sarai C. Piazza, Leigh A. Sharp, Camille L. Stagg, Brady R. Couvillion, Gregory D. Steyer, Thomas E. McGinnis
Use of structured decision-making to explicitly incorporate environmental process understanding in management of coastal restoration projects: Case study on barrier islands of the northern Gulf of Mexico Use of structured decision-making to explicitly incorporate environmental process understanding in management of coastal restoration projects: Case study on barrier islands of the northern Gulf of Mexico
Coastal ecosystem management typically relies on subjective interpretation of scientific understanding, with limited methods for explicitly incorporating process knowledge into decisions that must meet multiple, potentially competing stakeholder objectives. Conversely, the scientific community lacks methods for identifying which advancements in system understanding would have the highest...
Authors
P. Soupy Dalyander, Michelle B. Meyers, Brady Mattsson, Gregory Steyer, Elizabeth Godsey, Justin McDonald, Mark R. Byrnes, Mark Ford
A landscape-scale assessment of above- and belowground primary production in coastal wetlands: Implications for climate change-induced community shifts A landscape-scale assessment of above- and belowground primary production in coastal wetlands: Implications for climate change-induced community shifts
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...
Authors
Camille L. Stagg, Donald R. Schoolmaster, Sarai C. Piazza, Gregg Snedden, Gregory D. Steyer, Craig J Fischenich, Robert W. McComas
Operational considerations for implementing regional sediment management plans in the northern Gulf of Mexico Operational considerations for implementing regional sediment management plans in the northern Gulf of Mexico
Development of a comprehensive and stakeholder-driven Regional Sediment Management plan can provide the basis for long-term sustainable resource use and protection. This paper highlights three operational components that can positively influence sediment management at a regional scale, including (1) integration of an operational sediment budget, (2) development of a monitoring and...
Authors
Steven G. Underwood, Syed M. Khalil, Mark R. Byrnes, Gregory D. Steyer, Richard C Raynie
Wetland paleoecological study of southwest coastal Louisiana: sediment cores and diatom calibration dataset Wetland paleoecological study of southwest coastal Louisiana: sediment cores and diatom calibration dataset
Wetland sediment data were collected in 2009 and 2010 throughout the southwest Louisiana Chenier Plain as part of a pilot study to develop a diatom-based proxy for past wetland water chemistry and the identification of sediment deposits from tropical storms. The complete dataset includes forty-six surface sediment samples and nine sediment cores. The surface sediment samples were...
Authors
Kathryn E. L. Smith, James G. Flocks, Gregory D. Steyer, Sarai C. Piazza
Forecasting landscape effects of Mississippi River diversions on elevation and accretion in Louisiana deltaic wetlands under future environmental uncertainty scenarios Forecasting landscape effects of Mississippi River diversions on elevation and accretion in Louisiana deltaic wetlands under future environmental uncertainty scenarios
Large sediment diversions are proposed and expected to build new wetlands to alleviate the extensive wetland loss (5,000 km2) affecting coastal Louisiana during the last 78 years. Current assessment and prediction of the impacts of sediment diversions have focused on the capture and dispersal of both water and sediment on the adjacent river side and the immediate outfall marsh area...
Authors
Hongqing Wang, Gregory D. Steyer, Brady R. Couvillion, John M. Rybczyk, Holly J. Beck, William J. Sleavin, Ehab A. Meselhe, Mead A. Allison, Ronald G. Boustany, Craig J. Fischenich, Victor H. Rivera-Monroy
Development of a reproducible method for determining quantity of water and its configuration in a marsh landscape Development of a reproducible method for determining quantity of water and its configuration in a marsh landscape
Coastal Louisiana is a dynamic and ever-changing landscape. From 1956 to 2010, over 3,734 km2 of Louisiana's coastal wetlands have been lost due to a combination of natural and human-induced activities. The resulting landscape constitutes a mosaic of conditions from highly deteriorated to relatively stable with intact landmasses. Understanding how and why coastal landscapes change over...
Authors
Glenn M. Suir, D. Elaine Evers, Gregory D. Steyer, Charles E. Sasser
Landscape-level estimation of nitrogen removal in coastal Louisiana wetlands: potential sinks under different restoration scenarios Landscape-level estimation of nitrogen removal in coastal Louisiana wetlands: potential sinks under different restoration scenarios
Coastal eutrophication in the northern Gulf of Mexico (GOM) is the primary anthropogenic contributor to the largest zone of hypoxic bottom waters in North America. Although biologically mediated processes such as denitrification (Dn) are known to act as sinks for inorganic nitrogen, it is unknown what contribution denitrification makes to landscape-scale nitrogen budgets along the coast...
Authors
Victor H. Rivera-Monroy, Benjamin Branoff, Ehab Meselhe, Alex McCorquodale, Mark Dortch, Gregory D. Steyer, Jenneke Visser, Hongqing Wang
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.
Science and Products
Filter Total Items: 45
Council Monitoring and Assessment Program (CMAP): Inventory of existing water quality and habitat monitoring, and mapping metadata for Gulf of Mexico Programs Council Monitoring and Assessment Program (CMAP): Inventory of existing water quality and habitat monitoring, and mapping metadata for Gulf of Mexico Programs
Under the Council-Selected Restoration Component of the RESTORE Act, the Council develops Funded Priority Lists (FPLs) that describe the projects and programs it will fund. Projects and programs funded through this component must be in furtherance of the goals and objectives of the Council’s Comprehensive Plan and address at least one of the restoration criteria identified in the RESTORE...
Authors
Julie Bosch, Heidi Burkart, Bogdan Chivoiu, Randy Clark, Chris Clement, Nicholas Enwright, Steve Giordano, Chris Jeffrey, Edward Johnson, Rheannon M. Hart, Sarah Hile, Jacob Howell, Claudia Laurenzano, Michael T. Lee, Terrence A. McCloskey, Terry McTigue, Michelle B. Meyers, Scott 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
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
Predicting landscape effects of Mississippi River diversions on soil organic carbon sequestration Predicting landscape effects of Mississippi River diversions on soil organic carbon sequestration
Large Mississippi River (MR) diversions (peak water flow >1416 m3/s and sediment loads >165 kg/s) have been proposed as part of a suite of coastal restoration projects and are expected to rehabilitate and rebuild wetlands to alleviate the significant historic wetland loss in coastal Louisiana. These coastal wetlands are undergoing increasing eustatic sea‐level rise, land subsidence...
Authors
Hongqing Wang, Gregory D. Steyer, Brady Couvillion, Holly J. Beck, John M Rybczyk, Victor H. Rivera-Monroy, Ken W. Krauss, Jenneke M. Visser
Assessing coastal wetland vulnerability to sea-level rise along the northern Gulf of Mexico coast: Gaps and opportunities for developing a coordinated regional sampling network Assessing coastal wetland vulnerability to sea-level rise along the northern Gulf of Mexico coast: Gaps and opportunities for developing a coordinated regional sampling network
Coastal wetland responses to sea-level rise are greatly influenced by biogeomorphic processes that affect wetland surface elevation. Small changes in elevation relative to sea level can lead to comparatively large changes in ecosystem structure, function, and stability. The surface elevation table-marker horizon (SET-MH) approach is being used globally to quantify the relative...
Authors
Michael J. Osland, Kereen T. Griffith, Jack C. Larriviere, Laura C. Feher, Donald R. Cahoon, Nicholas M. Enwright, David A. Oster, John M. Tirpak, Mark S. Woodrey, Renee C. Collini, Joseph J. Baustian, Joshua L. Breithaupt, Julia A Cherry, Jeremy R. Conrad, Nicole Cormier, Carlos A. Coronado-Molina, Joseph F. Donoghue, Sean A. Graham, Jennifer W. Harper, Mark W. Hester, Rebecca J. Howard, Ken W. Krauss, Daniel Kroes, Robert R. Lane, Karen L. McKee, Irving A. Mendelssohn, Beth A. Middleton, Jena A. Moon, Sarai Piazza, Nicole M. Rankin, Fred H. Sklar, Gregory D. Steyer, Kathleen M. Swanson, Christopher M. Swarzenski, William Vervaeke, Jonathan M Willis, K. Van Wilson
Determining the spatial variability of wetland soil bulk density, organic matter, and the conversion factor between organic matter and organic carbon across coastal Louisiana, U.S.A. Determining the spatial variability of wetland soil bulk density, organic matter, and the conversion factor between organic matter and organic carbon across coastal Louisiana, U.S.A.
Soil bulk density (BD), soil organic matter (SOM) content, and a conversion factor between SOM and soil organic carbon (SOC) are often used in estimating SOC sequestration and storage. Spatial variability in BD, SOM, and the SOM–SOC conversion factor affects the ability to accurately estimate SOC sequestration, storage, and the benefits (e.g., land building area and vertical accretion)...
Authors
Hongqing Wang, Sarai C. Piazza, Leigh A. Sharp, Camille L. Stagg, Brady R. Couvillion, Gregory D. Steyer, Thomas E. McGinnis
Use of structured decision-making to explicitly incorporate environmental process understanding in management of coastal restoration projects: Case study on barrier islands of the northern Gulf of Mexico Use of structured decision-making to explicitly incorporate environmental process understanding in management of coastal restoration projects: Case study on barrier islands of the northern Gulf of Mexico
Coastal ecosystem management typically relies on subjective interpretation of scientific understanding, with limited methods for explicitly incorporating process knowledge into decisions that must meet multiple, potentially competing stakeholder objectives. Conversely, the scientific community lacks methods for identifying which advancements in system understanding would have the highest...
Authors
P. Soupy Dalyander, Michelle B. Meyers, Brady Mattsson, Gregory Steyer, Elizabeth Godsey, Justin McDonald, Mark R. Byrnes, Mark Ford
A landscape-scale assessment of above- and belowground primary production in coastal wetlands: Implications for climate change-induced community shifts A landscape-scale assessment of above- and belowground primary production in coastal wetlands: Implications for climate change-induced community shifts
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...
Authors
Camille L. Stagg, Donald R. Schoolmaster, Sarai C. Piazza, Gregg Snedden, Gregory D. Steyer, Craig J Fischenich, Robert W. McComas
Operational considerations for implementing regional sediment management plans in the northern Gulf of Mexico Operational considerations for implementing regional sediment management plans in the northern Gulf of Mexico
Development of a comprehensive and stakeholder-driven Regional Sediment Management plan can provide the basis for long-term sustainable resource use and protection. This paper highlights three operational components that can positively influence sediment management at a regional scale, including (1) integration of an operational sediment budget, (2) development of a monitoring and...
Authors
Steven G. Underwood, Syed M. Khalil, Mark R. Byrnes, Gregory D. Steyer, Richard C Raynie
Wetland paleoecological study of southwest coastal Louisiana: sediment cores and diatom calibration dataset Wetland paleoecological study of southwest coastal Louisiana: sediment cores and diatom calibration dataset
Wetland sediment data were collected in 2009 and 2010 throughout the southwest Louisiana Chenier Plain as part of a pilot study to develop a diatom-based proxy for past wetland water chemistry and the identification of sediment deposits from tropical storms. The complete dataset includes forty-six surface sediment samples and nine sediment cores. The surface sediment samples were...
Authors
Kathryn E. L. Smith, James G. Flocks, Gregory D. Steyer, Sarai C. Piazza
Forecasting landscape effects of Mississippi River diversions on elevation and accretion in Louisiana deltaic wetlands under future environmental uncertainty scenarios Forecasting landscape effects of Mississippi River diversions on elevation and accretion in Louisiana deltaic wetlands under future environmental uncertainty scenarios
Large sediment diversions are proposed and expected to build new wetlands to alleviate the extensive wetland loss (5,000 km2) affecting coastal Louisiana during the last 78 years. Current assessment and prediction of the impacts of sediment diversions have focused on the capture and dispersal of both water and sediment on the adjacent river side and the immediate outfall marsh area...
Authors
Hongqing Wang, Gregory D. Steyer, Brady R. Couvillion, John M. Rybczyk, Holly J. Beck, William J. Sleavin, Ehab A. Meselhe, Mead A. Allison, Ronald G. Boustany, Craig J. Fischenich, Victor H. Rivera-Monroy
Development of a reproducible method for determining quantity of water and its configuration in a marsh landscape Development of a reproducible method for determining quantity of water and its configuration in a marsh landscape
Coastal Louisiana is a dynamic and ever-changing landscape. From 1956 to 2010, over 3,734 km2 of Louisiana's coastal wetlands have been lost due to a combination of natural and human-induced activities. The resulting landscape constitutes a mosaic of conditions from highly deteriorated to relatively stable with intact landmasses. Understanding how and why coastal landscapes change over...
Authors
Glenn M. Suir, D. Elaine Evers, Gregory D. Steyer, Charles E. Sasser
Landscape-level estimation of nitrogen removal in coastal Louisiana wetlands: potential sinks under different restoration scenarios Landscape-level estimation of nitrogen removal in coastal Louisiana wetlands: potential sinks under different restoration scenarios
Coastal eutrophication in the northern Gulf of Mexico (GOM) is the primary anthropogenic contributor to the largest zone of hypoxic bottom waters in North America. Although biologically mediated processes such as denitrification (Dn) are known to act as sinks for inorganic nitrogen, it is unknown what contribution denitrification makes to landscape-scale nitrogen budgets along the coast...
Authors
Victor H. Rivera-Monroy, Benjamin Branoff, Ehab Meselhe, Alex McCorquodale, Mark Dortch, Gregory D. Steyer, Jenneke Visser, Hongqing Wang
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.
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