NDLI: Sustainability of a Tidal Freshwater Marsh Exposed to a Long-term Hydrologic Barrier and Sea Level Rise : A Short-term and Decadal Analysis of Elevation Change Dynamics

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Effects of Increased Salinity and Inundation on Inorganic Nitrogen Exchange and Phosphorus Sorption by Tidal Freshwater Floodplain Forest Soils, Georgia (USA)

Hydrologic Versus Biogeochemical Controls of Denitrification in Tidal Freshwater Wetlands

Periodicity in Stem Growth and Litterfall in Tidal Freshwater Forested Wetlands: Influence of Salinity and Drought on Nitrogen Recycling

Nitrogen and Phosphorus Differentially Affect Annual and Perennial Plants in Tidal Freshwater and Oligohaline Wetlands

Vegetation Dynamics in a Tidal Freshwater Wetland: A Long-Term Study at Differing Scales

Invertebrate Communities of Low-Salinity Wetlands: Overview and Comparison between Phragmites and Typha Marshes Within the Hudson River Estuary

Sustainability of a Tidal Freshwater Marsh Exposed to a Long-term Hydrologic Barrier and Sea Level Rise : A Short-term and Decadal Analysis of Elevation Change Dynamics

Salt Marshes on Substrate Enriched in Organic Matter: The Case of Ombrogenic Atlantic Salt Marshes

Ditching and Ditch-Plugging in New England Salt Marshes: Effects on Hydrology, Elevation, and Soil Characteristics

The Runaway Weed: Costs and Failures of Phragmites australis Management in the USA

Diurnal Variations of Carbon Dioxide, Methane, and Nitrous Oxide Vertical Fluxes in a Subtropical Estuarine Marsh on Neap and Spring Tide Days

Late Holocene Marsh Expansion in Southern San Francisco Bay, California

Ecotones as Indicators of Changing Environmental Conditions: Rapid Migration of Salt Marsh–Upland Boundaries

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Sustainability of a Tidal Freshwater Marsh Exposed to a Long-term Hydrologic Barrier and Sea Level Rise : A Short-term and Decadal Analysis of Elevation Change Dynamics

Content Provider	Springer Nature Link
Author	Delgado, P. Hensel, P. F. Swarth, C. W. Ceroni, M. Boumans, R.
Copyright Year	2013
Abstract	A 115-year-old railroad levee bisecting a tidal freshwater marsh perpendicular to the Patuxent River (Maryland) channel has created a northern, upstream marsh and a southern, downstream marsh. The main purpose of this study was to determine how this levee may affect the ability of the marsh system to gain elevation and to determine the levee’s impact on the marsh’s long-term sustainability to local relative sea level rise (RSLR). Previously unpublished data from 1989 to 1992 showed that suspended solids and short-term sediment deposition were greater in the south marsh compared to the north marsh; wetland surface elevation change data (1999 to 2009) showed significantly higher elevation gain in the south marsh compared to the north (6 ± 2 vs. 0 ± 2 mm year$^{−1}$, respectively). However, marsh surface accretion (2007 to 2009) showed no significant differences between north and south marshes (23 ± 8 and 26 ± 7 mm year$^{−1}$, respectively), and showed that shallow subsidence was an important process in both marshes. A strong seasonal effect was evident for both accretion and elevation change, with significant gains during the growing season and elevation loss during the non-growing season. Sediment transport, deposition and accretion decreased along the intertidal gradient, although no clear patterns in elevation change were recorded. Given the range in local RSLR rates in the Chesapeake Bay (2.9 to 5.8 mm year$^{−1}$), only the south marsh is keeping pace with sea level at the present time. Although one would expect the north marsh to benefit from high accretion of abundant riverine sediments, these results suggest that long-term elevation gain is a more nuanced process involving more than riverine sediments. Overall, other factors such as infrequent episodic coastal events may be important in allowing the south marsh to keep pace with sea level rise. Finally, caution should be exercised when using data sets spanning only a couple of years to estimate wetland sustainability as they may not be representative of long-term cumulative effects. Two years of data do not seem to be enough to establish long-term elevation change rates at Jug Bay, but instead a decadal time frame is more appropriate.
Starting Page	585
Ending Page	594
Page Count	10
File Format	PDF
ISSN	15592723
Journal	Estuaries
Volume Number	36
Issue Number	3
e-ISSN	15592731
Language	English
Publisher	Springer-Verlag
Publisher Date	2013-01-26
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Surface elevation change Accretion Tidal freshwater marsh Seasonal sedimentation Jug Bay Patuxent River Sustainability Environment Ecology Freshwater & Marine Ecology Environmental Management Nature Conservation Coastal Sciences
Content Type	Text
Resource Type	Article
Subject	Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics

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Sustainability of a Tidal Freshwater Marsh Exposed to a Long-term Hydrologic Barrier and Sea Level Rise A Short-term and Decadal Analysis of Elevation Change Dynamics (2012)

Sustainability of a Tidal Freshwater Marsh Exposed to a Long-term Hydrologic Barrier and Sea Level Rise

Carbon Sequestration and Sediment Accretion in San Francisco Bay Tidal Wetlands

Sediment Accretion in Tidal Freshwater Forests and Oligohaline Marshes of the Waccamaw and Savannah Rivers, USA

Importance of Biogeomorphic and Spatial Properties in Assessing a Tidal Salt Marsh Vulnerability to Sea-level Rise

Geochemical, Temperature, and Hydrologic Transport Limitations on Nitrate Retention in Tidal Freshwater Wetlands, Patuxent River, Maryland

Vegetation Dynamics in a Tidal Freshwater Wetland: A Long-Term Study at Differing Scales

Development and Application of a Method to Identify Salt Marsh Vulnerability to Sea Level Rise

Biogeomorphology of an upper Chesapeake Bay river-mouth tidal freshwater marsh

Sustainability of a Tidal Freshwater Marsh Exposed to a Long-term Hydrologic Barrier and Sea Level Rise : A Short-term and Decadal Analysis of Elevation Change Dynamics

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Sustainability of a Tidal Freshwater Marsh Exposed to a Long-term Hydrologic Barrier and Sea Level Rise : A Short-term and Decadal Analysis of Elevation Change Dynamics