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Nitrate uptake by foraminifera and use in conjunction with endobionts under anoxic conditions
endobionts anoxic conditions
2014/11/28
Among eukaryotes, some benthic foraminiferal species have been reported to be capable of nitrate respiration,
although little is known about their denitrification processes. In this study, we incubat...
Characterization of the key pathways of dissimilatory nitrate reduction and their response to complex organic substrates in hyporheic sediments
Characterization the key pathways dissimilatory nitrate reduction their response complex organic substrates in hyporheic sediments
2014/4/2
Laboratory incubations with river-bed sediment collected from riffles and pools were used to quantify potential pathways of dissimilatory nitrate reduction in the hyporheic zone of a groundwater-fed r...
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...
Simultaneous measurements of nitrate, oxygen, and carbon dioxide on oceanographic moorings: Observing the Redfield ratio in real time
nitrate oxygen carbon dioxide
2014/4/16
Autonomous observations of dissolved nitrate, oxygen, and total inorganic carbon (TCO2
, which is derived
from pCO2
and estimates of alkalinity) from sensors on the M1 and M2 moorings, off Monterey...
Direct and indirect coupling of primary production and diel nitrate dynamics in a subtropical spring-fed river
primary production iel nitrate dynamics
2014/4/16
We used high-frequency in situ measurements of nitrate (NO{
3
) and dissolved oxygen (DO) from the springfed Ichetucknee River, Florida, to derive multiple independent estimates of assimilatory nitr...
Nitrogen and oxygen isotopic signatures of subsurface nitrate seaward of the Florida Keys reef tract
Nitrogen oxygen isotopic signatures subsurface nitrate seaward Florida Keys reef tract
2014/4/22
Hydrographic and nutrient structure and the nitrogen and oxygen isotopic compositions (d15N and d18O) of the nitrate pool seaward of the Florida Keys reef tract were measured in Summer 2003. Nitrate a...
Nitrate-depleted conditions on the increase in shallow northern European lakes
Nitrate-depleted northern European lakes
2014/4/22
We determined relative nitrate-nitrogen (NO3-N) loss rates in 100 north-mid-European lakes from late spring to summer by using the exponential function N2 = N1e-k(t2 - t2), where N1 and N2 are NO3-N c...
HANDS-ON OCEANOGRAPHY——Investigating Coastal Processes and Nitrate Levels in the Elkhorn Slough Using Real-Time Data
Coastal salinity temperature nitrate swamp
2015/7/22
The primary objective of this activity is to predict how coastal processes, such as tides, affect salinity, temperature, and nitrate levels in a type of estuary, called a slough. Real-time data from t...
Nitrogen sources and cycling in the San Francisco Bay Estuary: A nitrate dual isotopic composition approach
Nitrogen sources cycling San Francisco Bay Estuary nitrate dual isotopic composition
2014/5/4
We used the dual isotopic composition of nitrate (δ15N and δ18O) within the estuarine system of San Francisco (SF) Bay, California, to explore the utility of this approach for tracing sources and cycl...
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...