Abstract
In the Northeastern U.S., salt marsh area is in decline. Habitat change analysis has revealed fragmentation, displacement of high marsh by low marsh species, and marsh drowning, while development of adjacent uplands limits upslope migration. Measures of marsh vegetation loss for eight sites in Rhode Island and New York between ca.1970 and 2011 indicate that substantial loss has occurred over past decades, with higher loss rates found for lower elevation salt marshes. Using inundation experiments, field surveys, and LiDAR datasets, we developed an elevation-productivity relationship for Spartina alterniflora specific to the U.S. Northeast, and located current salt marsh orthometric heights on this curve. We estimate that 87 % of Northeastern salt marshes are located at elevations where growth is limited by inundation. By manipulating water column nutrients, precipitation, and elevation, we further found that altered precipitation regime was associated with significant reductions in biomass, and that nutrient enrichment adversely impacts organic matter accumulation and peat formation. These results provide evidence that Northeastern U.S. marshes are vulnerable to the effects of accelerated sea level rise, and that neither precipitation changes, nor cultural eutrophication, will contribute positively to long-term salt marsh survival.
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References
Cahoon D, Guntenspergen GR (2010) Climate change, sea level rise, and coastal wetlands. Natl Wetl Newsl 32:8–12
Charles H, Dukes JS (2009) Effects of warning and altered precipitation on plant and nutrient dynamics of a New England salt marsh. Ecol Appl 19:1758–1773
Davey E, Wigand C, Johnson RL, Sundberg K, Morris JT, Roman CT (2011) Use of computed tomography imaging for quantifying coarse roots, rhizomes, peat, and particle densities in marsh soils. Ecol Appl 21:2156–2171
Deegan LA, Johnson DS, Warren RS, Peterson BJ, Fleeger JW, Fagherazzi S, Wollheim WM (2012) Coastal eutrophication as a driver of salt marsh loss. Nature 490:388–392
Donnelly JP (1998) Evidence of late Holocene post-glacial isostatic adjustment in coastal wetland deposits of eastern North America. In Geores Forum 3:393–400
Donnelly JP, Bertness MD (2001) Rapid shoreward encroachment of salt marsh cordgrass in response to accelerated sea-level rise. Proc Natl Acad Sci 98:14218–14223
Donnelly JP, Cleary P, Newby P, Ettinger R (2004) Coupling instrumental and geological records of sea‐level change: evidence from southern New England of an increase in the rate of sea‐level rise in the late 19th century. Geophys Res Lett 31, L05203
Frumhoff PC, McCarthy JJ, Melillo JM, Moser SC, Wuebbles DJ (2007) Confronting climate change in the northeast: science, impacts, and solutions. Union of Concerned Scientists, Cambridge, http://www.climatechoices.org/assets/documents/climatechoices/confronting-climate-change-in-the-u-s-northeast.pdf
Hartig EK, Gornitz V, Kolker AS, Mushacke F, Fallon D (2002) Anthropogenic and climate-change impacts on salt marshes of Jamaica Bay, New York City. Wetlands 22:71–89
Kearney MS, Grace RE, Stevenson JC (1988) Marsh loss in Nanticoke Estuary, Chesapeake Bay. Geogr Rev 78:205–220
Kearney MS, Rogers AS, Townshend JRG, Rizzo E, Stutzer D, Stevenson JC, Sundberg K (2002) Landsat imagery shows decline of coastal marshes in Chesapeake and Delaware Bays. Eos 83:173
Kirwan ML, Guntenspergen GR, D’Alpaos A, Morris JT, Mudd SM, Temmerman S (2010) Limits on the adaptability of coastal marshes to rising sea level. Geophys Res Lett 37, L23401
Kirwan ML, Murray AB, Donnelly JP, Corbett DR (2011) Rapid wetland expansion during European settlement and its implication for marsh survival under modern sediment delivery rates. Geology 39:507–510
Meade RH (1982) Sources, sinks, and storage of river sediment in the Atlantic drainage of the United States. J Geol 90:235–252
Morris JT, Shaffer GP, Nyman JA (2013) Brinson review: perspectives on the influence of nutrients on the sustainability of coastal wetlands. Wetlands 33:975–988
Morris JT, Sundareshwar PV, Nietch CT, Kjerfve B, Cahoon DR (2002) Responses of coastal wetlands to rising sea level. Ecology 83:2869–2877
Morton RW (1972) Spatial and temporal distribution of suspended sediment in Narragansett Bay and Rhode Island Sound. Geol Soc Am Mem 133:131–141
Pasternack GB, Brush GS, Hilgartner WB (2001) Impact of historic land‐use change on sediment delivery to a Chesapeake Bay subestuarine delta. Earth Surf Proc Land 26:409–427
Roman CT, Jaworski N, Short FT, Findlay S, Warren RS (2000) Estuaries of the Northeastern United States: habitat and land use signatures. Estuaries 23:743–764
Roman CT, Peck JA, Allen JR, King JW, Appleby PB (1997) Accretion of a New England (U.S.A.) salt marsh in response to inlet migration, storms, and sea-level rise. Estuar Coast Shelf Sci 45L:717–727
Sallenger AH Jr, Doran KS, Howd PA (2012) Hotspot of accelerated sea-level rise on the Atlantic coast of North America. Nat Clim Chang 2:884–888
Smith SM (2009) Multi-decadal changes in salt marshes of Cape Cod, MA: photographic analyses of vegetation loss, species shifts, and geomorphic change. Northeast Nat 16:183–208
Turner RE, Howes BL, Teal JM, Milan CS, Swenson EM, Goehringer-Toner DD (2009) Salt marshes and eutrophication: an unsustainable outcome. Limnol Oceanogr 54:1634–1642
Valiela I, Teal JM (1974) Nutrient limitation in salt marsh vegetation. In: Reimold RJ, Queen WH (eds) Ecology of halophytes. Academic, New York, pp 547–563
Voss CM, Christian RR, Morris JT (2013) Marsh macrophyte responses to inundation anticipate impacts of sealevel rise ane indicate ongoing drowning of North Carolina marshes. Mar Biol 160:181–194
Warren RS, Niering WA (1993) Vegetation change on a northeast tidal marsh: interaction of sea-level rise and marsh accretion. Ecology 74:96–103
Wehner MF (2004) Predicted twenty-first-century changes in seasonal extreme precipitation events in the parallel climate model. J Clim 17:4281–4290
Weston NB (2014) Declining sediments and rising seas: an unfortunate convergence for tidal wetlands. Estuar Coast 37:1–23
Acknowledgments
This report is tracking number ORD-005205 of the U.S. EPA’s Office of Research and Development, National Health and Environmental Effects Research Laboratory, Atlantic Ecology Division. Although the information in this document has been funded by the U.S. Environmental Protection Agency, it does not necessarily reflect the views of the Agency and no official endorsement should be inferred We acknowledge the NBNERR for access to field sites, and for sharing equipment, resources, and data.
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Watson, E.B., Oczkowski, A.J., Wigand, C. et al. Nutrient enrichment and precipitation changes do not enhance resiliency of salt marshes to sea level rise in the Northeastern U.S.. Climatic Change 125, 501–509 (2014). https://doi.org/10.1007/s10584-014-1189-x
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DOI: https://doi.org/10.1007/s10584-014-1189-x