Greenhouse Gas Fluxes Vary Between Phragmites Australis and Native Vegetation Zones in Coastal Wetlands Along a Salinity Gradient

  title={Greenhouse Gas Fluxes Vary Between Phragmites Australis and Native Vegetation Zones in Coastal Wetlands Along a Salinity Gradient},
  author={Rose M Martin and Serena Moseman‐Valtierra},
The replacement of native species by invasive Phragmites australis in coastal wetlands may impact ecosystem processes including fluxes of the greenhouse gases (GHGs) carbon dioxide (CO2) and methane (CH4). To investigate differences in daytime CH4 and CO2 fluxes as well as vegetation properties between Phragmites and native vegetation zones along a salinity gradient, fluxes were measured via cavity ringdown spectroscopy in 3 New England coastal marshes, ranging from oligohaline to polyhaline… 
Carbon dioxide fluxes reflect plant zonation and belowground biomass in a coastal marsh
Coastal wetlands are major global carbon sinks; however, they are heterogeneous and dynamic ecosystems. To characterize spatial and temporal variability in a New England salt marsh, greenhouse gas
Complex invader-ecosystem interactions and seasonality mediate the impact of non-native Phragmites on CH4 emissions
The data suggest that Phragmites-mediated CH4 emissions are particularly profound in soils with innately high rates of CH4 production, and that interactions between the invader and local abiotic conditions that vary both spatially and temporally on the order of meters and hours, respectively, can have a stronger impact on GHG emissions than theinvader itself.
Impoundment increases methane emissions in Phragmites‐invaded coastal wetlands
Saline tidal wetlands are important sites of carbon sequestration and produce negligible methane (CH4) emissions due to regular inundation with sulfate‐rich seawater. Yet, widespread management of
Different short-term responses of greenhouse gas fluxes from salt marsh mesocosms to simulated global change drivers
Salt marshes are valued as important greenhouse gas (GHG) sinks, but global changes in climate, nitrogen (N) pollution, and exotic species invasion may alter this marsh function. With the goal of
Nitrogen enrichment stimulates wetland plant responses whereas salt amendments alter sediment microbial communities and biogeochemical responses
These findings underpin the utility of combining plant and microbial responses, and highlight the need for more integrative studies to predict the consequences of a changing environment on freshwater wetlands.
Long‐term nutrient addition increases respiration and nitrous oxide emissions in a New England salt marsh
It is demonstrated that at decadal scales, vegetation community shifts and associated elevation changes driven by chronic eutrophication affect GHG emission from salt marshes.
Vegetation Zonation Predicts Soil Carbon Mineralization and Microbial Communities in Southern New England Salt Marshes
Coastal marshes are important blue carbon reservoirs, but it is unclear how vegetation shifts associated with tidal restoration and sea level rise alter soil microbial respiration rates and bacterial
Influence of Salt Marsh Vegetation on Carbon Cycling and Microbial Communities
Coastal marshes are important "blue carbon" reservoirs, but it is unclear how vegetation shifts associated with tidal restoration and sea-level rise alter microbial community composition and soil


Effects of Phragmites australis (common reed) invasion on aboveground biomass and soil properties in brackish tidal marsh of the Mullica river, New Jersey
Phragmites australis (common reed) has been increasing in brackish tidal wetlands of the eastern United States coast over the last century. Whereas several researchers have documented changes in
Phragmites australis invasion and expansion in tidal wetlands: Interactions among salinity, sulfide, and hydrology
Through their physiological effects on ion, oxygen, and carbon balance, respectively, salinity, sulfide, and prolonged flooding combine to constrain the invasion and spread ofPhragmites in tidal
Invasive alien plants increase CH4 emissions from a subtropical tidal estuarine wetland
Methane (CH4) is an important greenhouse gas whose emission from the largest source, wetlands is controlled by a number of environmental variables amongst which temperature, water-table, the
Salinity Influence on Methane Emissions from Tidal Marshes
The relationship between methane emissions and salinity is not well understood in tidal marshes, leading to uncertainty about the net effect of marsh conservation and restoration on greenhouse gas
Shoreline Development Drives Invasion of Phragmites australis and the Loss of Plant Diversity on New England Salt Marshes
Abstract:  The reed Phragmites australis Cav. is aggressively invading salt marshes along the Atlantic Coast of North America. We examined the interactive role of habitat alteration (i.e., shoreline
Increased Methane Emissions by an Introduced Phragmites australis Lineage under Global Change
North American wetlands have been invaded by an introduced lineage of the common reed, Phragmites australis. Native lineages occur in North America, but many populations have been extirpated by the