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Nitrate uptake by foraminifera and use in conjunction with endobionts under anoxic conditions
Nitrate uptake foraminifera endobionts anoxic conditions
2014/10/16
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 incubate...
Characterization of the key pathways of dissimilatory nitrate reduction and their response to complex organic substrates in hyporheic sediments
Characterization of the key pathways dissimilatory nitrate reduction their response to complex organic substrates hyporheic sediments
2014/4/4
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...
Seasonal variations in the concentrations of methyl and ethyl nitrate in ashallow freshwater lake
Seasonal variations in the concentrations methyl ethyl nitrate in a shallow freshwater lake
2014/4/16
Between February and October 2007, a time series of alkyl nitrate concentrations in the water column of a shallow freshwater lake, University of East Anglia Broad, located in southeastern England was ...
Physical pathways and utilization of nitrate supply to the giant kelp, Macrocystis pyrifera
Physical pathways utilization of nitrate supply giant kelp, Macrocystis pyrifera
2014/4/18
To determine the relative importance of different sources of nitrate to the annual nitrogen needs of the giant kelpMacrocystis pyrifera,we measured ambient nitrate concentrations at a kelp forest for ...
Nitrate : phosphate ratios and Emiliania huxleyi blooms
Nitrate phosphate ratios Emiliania huxleyi blooms
2014/5/9
It has been hypothesized that phosphate limitation, classically indicated by NO3 : PO4 ratios >16, is one of the critical factors allowing the coccolithophorid Emiliania huxleyi to bloom. This hypothe...
Reach-scale isotope tracer experiment to quantify denitrification and related processes in a nitrate-rich stream, midcontinent United States
Reach-scale isotope tracer experiment quantify denitrification related processes nitrate-rich stream midcontinent United States
2014/5/14
We conducted an in-stream tracer experiment with Br and 15N-enriched NO3- to determine the rates of denitrification and related processes in a gaining NO3- -rich stream in an agricultural watershed in...
Stream denitrification and total nitrate uptake rates measured using a field 15N tracer addition approach
Stream denitrification total nitrate uptake rates field 15N tracer addition approach
2014/5/14
We measured denitrification and total nitrate uptake rates in a small stream (East Fork of Walker Branch in eastern Tennessee) using a new field 15N tracer addition and modeling approach that quantifi...