Abstract
Copepods and chaetognaths from the Southern California Bight had higher 15N:14N ratios than did those from the North Pacific Central Gyre. Within the bight, zooplankters were more enriched in 15N when NO3− was the major nitrogenous nutrient for phytoplankton than at other times. The 15N enrichment is related to the degree of exchange of nitrogen between the euphotic zone and deeper water, and the low 15N:14N ratio in the central gyre is probably also related to the importance of nitrogen fixation. In contrast, little geographic or temporal variation was observed in zooplanktonic δ13C.
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.
