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Salt marsh resilience compromised by crabs along tidal creek edges
coastal marshes ecosystem crab
2021/8/10
Coastal marshes are vulnerable to erosion caused by rising seas, pounding waves, and tidal flows. In California's Elkhorn Slough, these vulnerabilities are made worse by superabundant crabs found at t...
Salt marshes are among the most productive ecosystems on Earth, providing nurseries for fish species and shelter and food for endangered birds. Salt marshes also mitigate the impacts of hurricanes and...
Salt marsh tidal exchange increases residence time of silica in estuaries
Salt marsh tidal exchange increases residence time of silica in estuaries
2014/7/10
We present flux measurements of dissolved silicon (DSi), biogenic Si (BSi), and dissolved inorganic nitrogen (DIN) and phosphorus (DIP) on a temperate salt marsh in Narragansett Bay, Rhode Island, ove...
Nitrogen enrichment increases net silica accumulation in a temperate salt marsh
Nitrogen enrichment increases net silica accumulation a temperate salt marsh
2014/4/2
Two New England salt marshes exposed to different N availability were assessed seasonally for 1 yr, creating the first complete salt marsh Si budgets. Triplicate seasonal measurements were collected f...
The effect of increased nitrate loading on nitrate reduction via denitrification and DNRA in salt marsh sediments
increased nitrate nitrate reduction via
2014/4/16
The effects of increased nitrogen loading on denitrification and dissimilatory nitrate reduction to ammonium
(DNRA) in marsh sediments were studied in permanently submerged subtidal creek sediments a...
Increased supply of ambient nitrogen has minimal effect on salt marsh bacterial production
Increased supply of ambient nitrogen salt marsh
2014/4/18
We examined the role of chronic low-level nutrient enrichment on the productivity of heterotrophic marsh
bacteria via a marsh fertilization experiment in which we mimicked the conditions of widesprea...
Long-term 15N-nitrogen retention in tidal freshwater marsh sediment: Elucidating the microbial contribution
Long-term 15N-nitrogen retention Elucidating the microbial contribution
2014/4/17
The long-term retention of nitrogen in sediment of a tidal freshwater marsh in the Scheldt estuary (Belgium)
was investigated by an in situ 15N-labeling experiment. Sediment of an unvegetated creek b...
Hurricane signals in salt marsh sediments: Inorganic sources and soil volume
Hurricane signals salt marsh sediments Inorganic sources soil volume
2014/4/22
The inorganic content of 51 dated sediment cores from Mississippi River deltaic plain salt marsh wetlands peaks with the landfall of hurricanes. Variations in the inorganic sediment content demonstrat...
Prediction of velocity profiles and longitudinal dispersion in emergent salt marsh vegetation
velocity profi les longitudinal dispersion
2014/4/23
To predict the behavior of solutes and suspended particles in wetlands, it is necessary to estimate advection and
longitudinal dispersion. To better understand these processes, measurements were take...
Nitrogen processing in a tidal freshwater marsh: A whole-ecosystem 15 N labeling study
Nitrogen processing tidal freshwater marsh
2014/5/13
We quantified the fate and transport of watershed-derived ammonium in a tidal freshwater marsh fringing the nutrientrich Scheldt River in a whole-ecosystem 15
N labeling experiment.
15
N-NH w...
Quantification of macrobenthic effects on diagenesis using a multicomponent inverse model in salt marsh sediments
Quantification of macrobenthic effects diagenesis using multicomponent inverse model salt marsh sediments
2014/5/19
Using a multicomponent inverse model, we quantified the rates of organic matter (OM) remineralization and the relative importance of major terminal electron acceptors [Fe(III)-(oxy)hydroxides and SO4-...
Benthic metabolism and sulfur cycling along an inundation gradient in a tidal Spartina anglica salt marsh
Benthic metabolism sulfur cycling inundation gradient tidal Spartina anglica saltmarsh
2014/5/22
Central aspects of carbon and sulfur biogeochemistry were studied along a transect extending from an unvegetated mudflat into a Spartina anglica salt marsh. Conditions along the transect differed with...
Transport of dissolved inorganic carbon from a tidal freshwater marsh to the York River estuary
dissolved inorganic carbon freshwater marsh
2014/5/20
The cycling of dissolved inorganic carbon (DIC) and the role of tidal marshes in estuarine DIC dynamics were
studied in a Virginia tidal freshwater marsh and adjacent estuary. DIC was measured over d...
Properties of intertidal marsh sediment mobilized by rainfall
intertidal marsh sediment mobilized rainfall
2014/5/20
We conducted sprinkler irrigation experiments on a low-tide marsh to investigate the effects of rainfall on the redistribution of organic matter (OM) and nutrients in the intertidal zone. We irrigated...
Tracking the fate of a high concentration groundwater nitrate plume through a fringing marsh: A combined groundwater tracer and in situ isotope enrichment study
Tracking the fate combined groundwater tracer
2014/5/30
A groundwater plume enriched in
15
NO was created upgradient of a mesohaline salt marsh. By measuring the 2
3
changes in concentration and isotopic enrichment of NO , N2
O, N2
, NH , and particu...