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Plant-mediated processes are often important in determining carbon cycling and storage in ecosystems. With climate-induced changes in the environment, plant-associated processes may also shift. Salt marshes in particular are useful systems to investigate plant-mediated carbon cycling, as these systems experience both sea-level rise and increased carbon dioxide concentrations due to climate change, in addition to stochastically experiencing extreme drought and flood conditions. We measured biomass, soil, and gas carbon pools and the fluxes between those pools using a mesocosm approach in a salt marsh system, to investigate the response of plant-mediated carbon cycling to near-term climate change.
Categories: Data;
Tags: Ecology,
Louisiana,
USGS Science Data Catalog (SDC),
aboveground production,
belowground production, All tags...
biota,
carbon cycling,
carbon dioxide,
climate change,
coastal wetland,
decomposition,
sea-level rise,
soil carbon, Fewer tags
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Rising sea levels threaten the sustainability of coastal wetlands around the globe, thus understanding how increased inundation alters the elevation change mechanisms in these systems is increasingly important. Typically, the ability of coastal marshes to maintain their position in the intertidal zone depends on the accumulation of both organic and inorganic materials, so one, if not both, of these processes must increase to keep pace with rising seas, assuming all else constant. To determine the importance of vegetation in these processes, we measured elevation change and surface accretion over a 4-year period in recently subsided, unvegetated marshes, resulting from drought-induced marsh dieback, in paired planted...
Categories: Publication;
Types: Citation;
Tags: Accretion,
Coastal wetland,
Forests,
Grasslands and Plains,
Landscapes, All tags...
SET,
Sea-Level Rise and Coasts,
Southeast CASC,
Spartina alterniflora,
Water, Coasts and Ice,
Wetlands,
elevation change,
sea level rise,
subsidence, Fewer tags
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