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Species and δ15N Signatures of Nitrogen Transformations in the Suboxic Zone of the Black Sea
Species and δ15N Signatures Nitrogen Transformations Suboxic Zone of the Black Sea
2015/7/27
Nitrogen is an essential nutrient for living systems in the ocean; it is a component of proteins, chlorophyll, and nucleic acids. In the oceans, nitrogen exists as a dissolved gas (N2), dissolved orga...
Assessing nonpoint-source nitrogen loading and nitrogen fixation in lakes using δ15N and nutrient stoichiometry
Assessing nonpoint-source nitrogen loading nitrogen fixation lakes using δ15N nutrient stoichiometry
2014/4/4
Runoff from human-dominated watersheds has greatly altered nitrogen (N) and phosphorus (P) cycling in lakes. Nutrients from human sources are distinct from those from undisturbed ecosystems in several...
Sedimented cyanobacterial detritus as a source of nutrient for submerged macrophytes (Vallisneria spiralisandElodea nuttallii): An isotope labeling experiment using 15N
Sedimented cyanobacterial detritus a source of nutrient submerged macrophytes An isotope labeling experiment
2014/4/16
A tracer experiment using the nitrogen isotope15N investigated the uptake and incorporation of nitrogen from sedimented cyanobacterial detritus by two species of submerged macrophytes, the nativeValli...
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...
Nitrogen incorporation and retention by bacteria, algae, and fauna in a subtropical intertidal sediment: An in situ 15N-labeling study
Nitrogen incorporation retention by bacteria
2014/4/22
We performed a 15N-labeling study to investigate nitrogen incorporation and retention by the benthic
microbial community (bacteria and benthic microalgae) and fauna in the intertidal sediment of the ...
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...
Upwelling and the condition and diet of juvenile rockfish: A study using 14C, 13C, and 15N natural abundances
Upwelling the condition diet of juvenile rockfish 14C 13C 15N natural abundance
2014/6/9
Juvenile Sebastes jordani individuals sampled in late spring 1995, 1996, and 1997 near Monterey Bay, California, were analyzed for Δ14C, δ13C, and δ15N. As anticipated, a strong negative correlation w...
Nitrogen (15N) retention in small Thalassia hemprichii seagrass plots in an offshore meadow in South Sulawesi, Indonesia
Nitrogen (15N) retention small Thalassia hemprichii seagrass plots an offshore meadow South Sulawesi Indonesia
2014/5/30
Nitrogen retention was investigated during 240 d in 1 X 1 m field plots of the tropical seagrass Thalassia hemprichii. Shoots were enriched with 15N by brief exposure of the leaves to an elevated conc...