Abstract
Water samples were taken from three regions in the Kinneret ecosystem (the Watershed (WS), the National Water Carrier (NWC) and the lake) over a 14 month period and nitrate reductase (NR) activity measured by a simplified assay previously developed for field studies. A complex relationship between NR activity and ambient NO3 and/or NH4 concentrations was observed. NR activity was not generally predictable from ambient nutrient concentrations. No correlation between NR activity and the ambient orthophosphate (SRP) concentrations or the dissolved, inorganic N : P atomic ratio was observed, although NR activity appeared to correlate with both NO3 or NH4 uptake. Our results suggest that NR activity is related to the N nutritional status of the cells and their nutrient prehistory rather than ambient nutrient concentrations.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
