Cooperative Fish and Wildlife Research Units Program: Louisiana
Education, Research and Technical Assistance for Managing Our Natural Resources

Louisiana Project


Occurrence and variation in submersed aquatic vegetation along the northern coast of the Gulf of Mexico

September 2012 - August 2020


Personnel

Participating Agencies

  • National Park Service
  • GCPO LCC
  • FWS, Gulf Coast Joint Venture
  • SSP program
  • South Central Climate Center
PhD Student Kristin DeMarco sampling SAV and staying hydrated.

Submersed aquatic vegetation (SAV) communities are highly productive ecosystems that provide significant ecological benefits within coastal areas, including support for many important species of fish and wildlife. Despite their critical importance, and loss globally, we lack consistent baseline data on SAV resources across the coastal salinity gradient. This project will provide data on the occurrence and abundance of SAV resources (e.g., coverage, composition, seed resources) within the northern Gulf of Mexico, quantitatively assess environmental factors affecting its spatial and temporal variation and develop a conceptual model of factors influencing SAV resources. These data are critical in identifying empirical relationships between SAV resources and environmental variables, and will enable predictive modeling of SAV resources under different scenarios of landscape and climate change.

Research Publications Publication Date
DeMarco, K, E. Hillmann, M. Brasher, M. La Peyre. 2016. Brackish marsh zones as a waterfowl habitat resource in submerged aquatic vegetation beds in the northern Gulf of Mexico. Journal of the Southeastern Association of Fish and Wildlife Agencies 3:261-269. | Abstract | Publisher Website March 2016
Hillmann, E., K.E. DeMarco and M La Peyre. 2016. Establishing a baseline of estuarine submerged aquatic vegetation resources across salinity zones within coastal areas of the northern Gulf of Mexico. Journal of the Southeastern Association of Fish and Wildlife Agencies. 3:25-32. | Abstract | Publisher Website August 2016
La Peyre, MK. 2015. Final Summary to the South Central Climate Science Center for Occurrence and variation in submersed aquatic vegetation along the northern Gulf of Mexico: a hierarchical approach to assess impacts of environmental change on SAV resources. 2012-2015. December 2015
De Marco, KD, Couvillion, B, Brown S., La Peyre, MK. 2018. Submerged aquatic vegetation mapping in coastal Louisiana through development of a spatial likelihood occurrence (SLOO) model. Aquatic Botany 151:87-97. September 2018
Technical Publications Publication Date
DeMarco, K., Hillmann, E., and La Peyre, M., 2017, Seed biomass from shallow coastal water areas along a salinity gradient in Barataria Bay, Louisiana (2015): U.S. Geological Survey data release, https://doi.org/10.5066/F7TH8K5J. May 2017
DeMarco, K., Hillmann, E., and La Peyre, M., 2017, Seed biomass from shallow coastal water areas from Texas through Alabama, 2013-2015: U.S. Geological Survey data release,https://doi.org/10.5066/F7Z899WV. May 2017
Hillmann, E., and La Peyre, M., 2017, Sediment carbon, submerged aquatic vegetation and environmental variables in deltaic southeast Louisiana (2015-2016): U.S. Geological Survey data release,https://doi.org/10.5066/F7QZ2853. May 2017
Hillmann, E., DeMarco, K., and La Peyre, M., 2017, Submerged aquatic vegetation and environmental data along a salinity gradient in Barataria Bay, Louisiana (2015): U.S. Geological Survey Data Release, https://doi.org/10.5066/F7M61HG4. May 2017
La Peyre, M., DeMarco, K., and Hillmann, E., 2017, Submerged aquatic vegetation and environmental data for coastal areas from Texas through Alabama, 2013-2015: U.S. Geological Survey data release, https://doi.org/10.5066/F7GH9G44. May 2017
Presentations Presentation Date
DeMarco, K, Osland, M., Couvillion, B. M. La Peyre. 2015. Drawing the map of submerged aquatic vegetation in the northern Gulf of Mexico: distribution and patterns of abundance across salinity zones State of the Coast Abstract. June 2016 June 2016
DeMarco, K., Brown, S., Couvillion, B. and M La Peyre. 2017. How do you map what you can’t see? Submerged aquatic vegetation occurrence modeling in Louisiana. Coastal Estuarine Research Federation Meeting. November, Rhode Island November 2017
DeMarco, K., Hillmann, E., Brasher MG, and MK La Peyre. 2016. Variation in submerged aquatic vegetation and waterfowl food resources across a coastal salinity gradient in the northern Gulf of Mexico - impacts on habitat value. SWS international Meeting, Corpus Christ, Texas June 2016
DeMarco, KE, Brown, S, Couvillion, B, La Peyre. MK. 2016. Drawing the map of submerged aquatic vegetation in the northern Gulf of Mexico: distribution patterns across salinity zones. Restore Americas Estuaries, New Orleans, LA Dec 12-16, 2016 December 2016
DeMarco, KE, Hillmann E, Brasher, M, La Peyre, M. 2015. Changes in coastal salinities will affect seed availability for waterfowl in submerged aquatic vegetation beds and coastal marshes in the northern Gulf of Mexico 6th Annual Conference of the Southeastern Association of Fish and Wildlife Agencies. November 1-4, 2015 November 2015
DeMarco, KE, Hillmann, E and M La Peyre 2015. Changing coastal salinities will affect submerged aquatic vegetation resources in the northern Gulf of Mexico. CERF, Nov 8-12, 2015, Portland OR November 2015
DeMarco, KE, Hillmann, E, Nyman JA, La Peyre MK. 2016. Changing coastal salinities will affect submerged aquatic vegetation resources in the northern Gulf of Mexico. LDWF Research Symposium. May 31, 2016. May 2016
Hillmann, E, DeMarco, K, La Peyre, M. 2015. Predicted effects of climate change will change the spatial distribution of dominant SAV biomass resources in shallow, estuarine waters along the northern Gulf of Mexico. 6th Annual Conference of the Southeastern Association of Fish and Wildlife Agencies, November 1-4, 2015 November 2015
Hillmann, E, DeMarco, K, La Peyre, M. 2015. Environmental drivers of seasonal variability in coastal marsh pond SAV communities along a salinity gradient in Barataria basin, Louisiana, U.S.A. State of the Coast, Louisiana. June 2016 June 2016
Hillmann, E., Rivera-Monroy, V., La Peyre. M. 2017. Submerged aquatic vegetation habitat sequesters organic carbon. Louisiana Agriculture Magazine. Winter 2017. October 2017
Hillmann, E.R., V. Rivera Monroy, M.K. La Peyre. 2017. Estuarine submerged aquatic vegetation beds provide significant carbon storage in deltaic environments Coastal Estuarine Research Federation Meeting. Rhode Island. November 2017
Hillmann, ER, Rivera-Monroy, VH, La Peyre MK. 2016. Carbon sotrage in submerged aquatic vegetation beds across salinity gradients within coastal Louisiana deltaic estuaries. RAE Dec. 12-16, 2016. New Orleans, LA December 2016
Hillmann, ER, V. Rivera-Monroy, MK La Peyre. 2016. Long-term carbon storage of submerged aquatic vegetation beds across the salinity zone within deltaic estuaries of the northern Gulf of Mexico. State of the Coast, June 1-3, 2016, New Orleans, LA. June 2016
Megan K La Peyre, E.R. Hillmann, K.E. DeMarco*, B. Couvillion, S. Brown, J.A. Nyman. 2016. Potential impacts of changing environmental conditions on overall submerged aquatic vegetation resources: food and habitat availability for dependent fish and wildlife. SEAFWA Meeting. Oct. 16-18, Baton Rouge, LA October 2016
Carruthers, T., M. La Peyre, K. Darnell, M. Baustian. 2015. Understanding Gulf Coast estuarine and deltaic benthic ecology for restoration. Session Proposal, CERF Conference, Portland, OR. November 2015
DeMarco, KE, Hillmann ER, MK La Peyre. 2018. Submerged aquatic vegetation in Barataria Bay, Louisiana: seasonal and spatial patterns. State of the Coast, New Orleans, LA. May 30-June 1, 2018. May 2018
Hillmann, E., Rivera-Monroy, V., La Peyre. M. 2017. Submerged aquatic vegetation habitat sequesters organic carbon. Louisiana Agriculture Magazine. Winter 2017. October 2017
Hillmann, E.R., V. Rivera Monroy, M.K. La Peyre. 2017. Estuarine submerged aquatic vegetation beds provide significant carbon storage in deltaic environments Coastal Estuarine Research Federation Meeting. Rhode Island. November 2017
La Peyre, MK. 2016. Session Moderator. Abundance, distribution and ecosystem functions of submerged aquatic vegetation in coastal Louisiana. State of the Coast, June 2016, New Orleans, LA. June 2016
Theses and Dissertations Publication Date
DeMarco, KD. 2018. Shifting ecological niche across coastal landscapes: spatial and temporal ecological patterns driving submerged aquatic vegetation habitat distribution across the northern Gulf of Mexico. PhD Dissertation. Louisiana State University, Baton Rouge, LA. August 2018
Hillmann, ER. 2018. Analysis of submerged aquatic vegetation across the northern Gulf of Mexico: Communities and Biomass. PhD Dissertation, Louisiana State University, Baton Rouge, LA May 2018