Primary production in coastal waters is generally nitrogen (N) limited with denitrification outpacing nitrogen fixation (N2-fixation). However, recent work suggests that we have potentially underestimated the importance of heterotrophic sediment N2-fixation in marine ecosystems. We used clone libraries to examine transcript diversity of nifH (a gene associated with N2-fixation) in sediments at three sites in a temperate New England estuary (Waquoit Bay, Massachusetts, USA) and compared our results to net sediment N2 fluxes previously measured at these sites. We observed nifH expression at all sites, including a site heavily impacted by anthropogenic N. At this N impacted site, we also observed mean net sediment N2-fixation, linking the geoc...
The fixation of dinitrogen (N2) and denitrification are two opposite processes in the nitrogen cycle...
Biological dinitrogen (N2) fixation is the primary input of fixed nitrogen (N) into the marine biosp...
Biological dinitrogen (N2) fixation is the primary input of fixed nitrogen (N) into the marine biosp...
Primary production in coastal waters is generally nitrogen (N) limited with denitrification outpacin...
Nitrogen (N) cycling microbial communities in marine sediments are extremely diverse, and it is unkn...
Marine waters are often nitrogen (N) limited. Denitrification, the microbial conversion of nitrate t...
Marine sediments harbor metabolically versatile bacteria whose activities can influence the cycle of...
The fixation of dinitrogen (N2) and denitrification are two opposite processes in the nitrogen cycle...
The fixation of dinitrogen (N2) and denitrification are two opposite processes in the nitrogen cycle...
Marine sediments harbor metabolically versatile bacteria whose activities can influence the cycle of...
Continental margin sediments constitute only about 10% of the total sediment surface area in the wor...
Coastal marine sediments, as locations of substantial fixed nitrogen loss, are very important to the...
Nitrogen (N2) fixation is the process by which N2 gas is converted to biologically reactive ammonia,...
Tidal and seasonal fluctuations in the oligohaline reaches of estuaries may alter geochemical featur...
Tidal and seasonal fluctuations in the oligohaline reaches of estuaries may alter geochemical featur...
The fixation of dinitrogen (N2) and denitrification are two opposite processes in the nitrogen cycle...
Biological dinitrogen (N2) fixation is the primary input of fixed nitrogen (N) into the marine biosp...
Biological dinitrogen (N2) fixation is the primary input of fixed nitrogen (N) into the marine biosp...
Primary production in coastal waters is generally nitrogen (N) limited with denitrification outpacin...
Nitrogen (N) cycling microbial communities in marine sediments are extremely diverse, and it is unkn...
Marine waters are often nitrogen (N) limited. Denitrification, the microbial conversion of nitrate t...
Marine sediments harbor metabolically versatile bacteria whose activities can influence the cycle of...
The fixation of dinitrogen (N2) and denitrification are two opposite processes in the nitrogen cycle...
The fixation of dinitrogen (N2) and denitrification are two opposite processes in the nitrogen cycle...
Marine sediments harbor metabolically versatile bacteria whose activities can influence the cycle of...
Continental margin sediments constitute only about 10% of the total sediment surface area in the wor...
Coastal marine sediments, as locations of substantial fixed nitrogen loss, are very important to the...
Nitrogen (N2) fixation is the process by which N2 gas is converted to biologically reactive ammonia,...
Tidal and seasonal fluctuations in the oligohaline reaches of estuaries may alter geochemical featur...
Tidal and seasonal fluctuations in the oligohaline reaches of estuaries may alter geochemical featur...
The fixation of dinitrogen (N2) and denitrification are two opposite processes in the nitrogen cycle...
Biological dinitrogen (N2) fixation is the primary input of fixed nitrogen (N) into the marine biosp...
Biological dinitrogen (N2) fixation is the primary input of fixed nitrogen (N) into the marine biosp...