USAP-DC

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Dissolved nutrients, cell counts, and nitrogen isotope measurements from Chaetoceros socialis culture experiments Data DOI: https://doi.org/10.15784/601727 Cite as Dove, I. (2023) "Dissolved nutrients, cell counts, and nitrogen isotope measurements from Chaetoceros socialis culture experiments" U.S. Antarctic Program (USAP) Data Center. doi: https://doi.org/10.15784/601727. AMD - DIF Record(s) USAP-1744871_1 Abstract This dataset is the results of 3 experiments in which the spore-forming diatom Chaetoceros socialis was grown in culture and induced into resting spores by nitrate limitation. The nitrogen isotopic composition of accumulated biomass (δ15Nbiomass; ‰ vs air) and of diatom-bound organic N (δ15Ndb; ‰ vs air) are reported at two timepoints from each experiment: prior to and after resting spore formation. Experiments 1 and 2 provide measurements for CRS mixed with vegetative Chaetoceros cells, while Experiment 3 provides measurements for isolated CRS. Fluorescence and nitrate concentration was tracked throughout each experiment, with dissolved silica, ammonium, and total reduced nitrogen also measured in Experiment 3. Creator(s): Dove, Isabel Date Created: 2023-08-30 Repository: USAP-DC (current) License: Creative Commons Attribution Only v4.0 Generic [CC BY 4.0] Award(s) NSF 1744871 Version: 2 Related Project(s) The nitrogen isotopic composition of diatom resting spores in Southern Ocean sediments: A source of bias and/or paleoenvironmental information? Keywords Antarctica Antarctica