Evaluating the Relationship Among Wetland Vertical Development, Elevation Capital, Sea-Level Rise, and Tidal Marsh Sustainability
Accelerating sea-level rise and human impacts to the coast (e.g., altered sediment supply and hydrology, nutrient loading) influence the accumulation of sediment and organic matter, and thereby impact the ability of coastal tidal wetlands to maintain an elevation consistently within the vegetation growth range. Critical components of marsh sustainability are the marsh elevation within the vegetation growth range (elevation capital) and the rates of marsh surface elevation change and relative sea-level rise. The relationship among these factors and their combined influence on marsh integrity were evaluated by comparing trends in surface elevation change on five salt marsh sites located on three marsh islands in Jamaica Bay, NY, USA. All marsh sites were located in a similar physical setting (i.e., tidal range, sea-level rise rate, sediment supply). The structural integrity of the marshes ranged from densely vegetated (high integrity) to severely deteriorated (low integrity) with elevation capital ranging from high to low, respectively, and included a deteriorating marsh site that was partially restored. Two marshes with high elevation capital maintained their relative position high within the tidal range through a combination of surface sediment deposition and shallow subsurface expansion, and kept pace with local sea-level rise. A marsh with moderate elevation capital showed signs of flooding stress and was deteriorating, but managed to keep pace with local sea-level rise. The deteriorated marsh gained no elevation over the 14-year study and was located too low within the tidal range to support continuous coverage of salt marsh vegetation. Elevation gain in the restored marsh initially lagged behind sea-level rise for 8 years, but the elevation trend recovered and kept pace with sea-level rise for the last 5 years. A conceptual model is presented that describes the relationship among elevation capital, and rates of marsh elevation gain and sea-level rise. Note that a search for factors influencing wetland loss should focus on process changes to marsh vertical development (e.g., sediment supply, vegetation growth) and climate change effects (e.g., sea-level and temperature rise) that can cause elevation gain to lag behind sea-level rise, and these occur prior to the onset of marsh deterioration.
KeywordsSalt marsh Elevation change Vertical accretion Shallow subsidence Spartina alterniflora Surface elevation table–marker horizon (SET–MH) method
We thank the following individuals for their assistance with fieldwork: D. Bishara, P. Brennand, R. K. Derby, W. Garman, A. Gilbert, J. Jones, J. Klimstra, C. Otto, D. Riepe, M. Ringenary, G. Frame, P. Rafferty, and R. Tainsh. P. Hensel provided extensive guidance with data analysis, A. Campbell assisted with the satellite-based analysis of the study marshes, and P. Rafferty provided the vegetation cover data for the Big Egg marsh. Use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the US Government.
Financial support for this project was provided by the National Park Service, Northeast Coastal and Barrier Network, and Natural Resources Preservation Program.
- Barras, J. A., P. E. Bourgeois, and L. R. Handley. 1994. Land loss in coastal Louisiana 1956-90. National Biological Survey, National Wetlands Research Center Open File Report 94-01.4 pages, 10 color plates.Google Scholar
- Benotti, M.J., M. Abbene, and S.A. Terracciano. 2007. Nitrogen loading in Jamaica Bay, Long Island, New York: predevelopment to 2005. U.S. Geological Survey Scientific Investigations Report 2007–5051. http://pubs.usgs.gov/sir/2007/5051/.
- Black, F.R. 1981. Historic resources study: Jamaica Bay, a history. Cultural Resource Management Study No. 3. Division of cultural resources, North Atlantic Regional Office, National Park Service, US Department of the Interior, Boston, MA 116p.Google Scholar
- Bokuniewicz, H., and J. Ellsworth. 1986. Sediment budget for the Hudson system. Journal of Northeast Geology 8: 158–164.Google Scholar
- Cahoon, D.R., and G.R. Guntenspergen. 2010. Climate change, sea-level rise, and coastal wetlands. National Wetlands Newsletter 32: 8–12.Google Scholar
- Cahoon, D.R., J.W. Day, and D.J. Reed. 1999. The influence of surface and shallow subsurface soil processes on wetland elevation: a synthesis. Current Topics in Wetland Biogeochemistry 3: 72–88.Google Scholar
- Cahoon, D.R., P. Hensel, T. Spencer, D. Reed, K. McKee, and N. Saintilan. 2006. Coastal wetland vulnerability to relative sea-level rise: wetland elevation trends and process controls. In Wetlands and natural resource management, ed. J.T.A. Verhoeven, B. Beltman, R. Bobbink, and D. Whigham, vol. 190, 271–292. Ecological studies. Berlin Heidelberg: Springer-Verlag.CrossRefGoogle Scholar
- Church JA, PU Clark, A Cazenave, JM Gregory, S Jevrejeva, A Levermann, MA Merrifield, GA Milne, RS Nerem, PD Nunn, AJ Payne, WT Pfeffer, D Stammer and AS Unnikrishnan. 2013. Sea level change. In Climate change 2013: the physical science basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change, eds. Stocker, T.F., D. Qin, G.-K. Plattner, M. Tignor, S.K. Allen, J. Boschung, A. Nauels, Y. Xia, V. Bex and P.M. Midgley. Cambridge; New York: Cambridge University Press.Google Scholar
- Day, J.W., G.P. Kemp, D. Reed, D. Cahoon, R. Boumans, J. Suhayda, and R. Gambrell. 2011. Vegetation death and rapid loss of surface elevation in two contrasting Mississippi delta salt marshes: the role of sedimentation, autocompaction and sea-level rise. Ecological Engineering 37 (2): 229–240.CrossRefGoogle Scholar
- Frame, G.W., K. Mellander, and D.A. Adamo. 2006. Big Egg marsh experimental restoration in Jamaica Bay, New York. In People, places and parks: Proceedings of the 2005 George Wright Society conference on parks, protected areas, and cultural sites, 123–130. Hancock: The George Wright Society.Google Scholar
- Ganju, N.K., M.L. Kirwan, P.J. Dickhudt, G.R. Guntenspergen, D.R. Cahoon, and K.D. Kroeger. 2015. Sediment transport-based metrics of wetland stability. Geophysical Research Letters 42 (19): 7992–8000.Google Scholar
- Kolker, A.S. 2005. The impacts of climate variability and anthropogenic activities on salt marsh accretion and loss on Long Island. Dissertation. Marine Science Research Center, Stony Brook University, Stony Brook, New York, USA.Google Scholar
- Lovelock, C.E., D.R. Cahoon, D.A. Friess, G.R. Guntenspergen, K.W. Krauss, R. Reef, K. Rogers, M.L. Saunders, F. Sidik, A. Swales, N. Saintilan, Le Xuan Thuyen, and Tran Triet. 2015. The vulnerability of Indo-Pacific mangrove forests to sea-level rise. Nature 526 (7574): 559–563.CrossRefGoogle Scholar
- Lynch, J.C., P. Hensel, and D.R. Cahoon. 2015. The surface elevation table and marker horizon technique: a protocol for monitoring wetland elevation dynamics. Natural resource report NPS/NCBN/NRR—2015/1078. National Park Service, Fort Collins, Colorado, USA.Google Scholar
- National Oceanic and Atmospheric Administration (NOAA). 2015. Tides and currents products. https://tidesandcurrents.noaa.gov/sltrends/sltrends_station.shtml?stnid=8531680. Accessed 10 Nov 2017.
- National Park Service. 2007. An update on the disappearing salt marshes of Jamaica Bay, New York, Report prepared by Gateway National Recreation Area, National Park Service, U.S. Department of the Interior and the Jamaica Bay Watershed Protection Plan Advisory Committee, New York, New York, USA, pp. 19 + appendices.Google Scholar
- Orson, R.A., W. Panageotou, and S.P. Leatherman. 1985. Response of tidal salt marshes of the US Atlantic and Gulf coasts to rising sea levels. Journal of Coastal Research 1: 29–37.Google Scholar
- Pendleton, L., D. Donato, B. Murray, S. Crooks, W.A. Jenkins, S. Sifleet, C. Craft, J. Fourqurean, J.B. Kauffman, N. Marba, P. Megonigal, E. Pidgeon, D. Herr, D. Gofdon, and A. Baldera. 2012. Estimating global “blue carbon” emissions from conversion and degradation of vegetated coastal ecosystems. PLoS One 7 (9): e43542. https://doi.org/10.1371/journal.pone.0043542.CrossRefGoogle Scholar
- Peteet, D., D. Pederson, D. Kurdyla, and T. Guilderson. 2006. Hudson River paleoecology from marshes: environmental change and its implications for fisheries. In Hudson River fishes and their environment, ed. J. Waldman, K. Limburg, and D. Strayer, 113–128. American Fisheries Society Monograph.Google Scholar
- Pinheiro, J, D. Bates, S. DebRoy, D. Sarkar and R Core Team. 2016. nlme: linear and nonlinear mixed effects models. R package version 3.1–128.Google Scholar
- R Core Team. 2016. R: a language and environment for statistical computing. Vienna: R Foundation for Statistical Computing.Google Scholar
- Rafferty, P., J. Castagna, and D. Adamo. 2011. Building partnerships to restore an urban marsh ecosystem at Gateway National Recreation Area. Park Science 27 (3): 34–41.Google Scholar
- Raposa, K., K. Wasson, E. Smith, J. Crooks, P. Delgado, S. Fernald, M. Ferner, A. Helms, L. Hice, J. Mora, B. Puckett, D. Sanger, S. Shull, L. Spurrier, R. Stevens, and S. Lerberg. 2016. Assessing tidal marsh resilience to sea-level rise at broad geographic scales with multi-metric indices. Biological Conservation 204: 263–275.CrossRefGoogle Scholar
- Shaler, N. S. 1885. Preliminary report on sea-coast swamps of the eastern United States. In Sixth annual report of the United States Geological Survey to the Secretary of the Interior, 1884–1885, ed. JW Powell, 353–398. Washington, DCGovernment Printing Office.Google Scholar
- Stevenson, J.C., and M.S. Kearney. 2009. Impacts of global climate change and sea-level rise on tidal marshes. In Human impacts on salt marshes: a global perspective, ed. B.R. Silliman, E.D. Grosholz, and M.D. Bertness, 176–206. Berkeley: University of California Press.Google Scholar