Trial B test of the dissolution method for estimates of the 15N2 atom% of incubations

Alternative Title
Date Created
2019-10-02
Location
North Atlantic Ocean, Pacific Ocean
DOI
10.1575/1912/bco-dmo.778158.1
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Abstract
The “dissolution” method to measure N2 fixation rates with 15N2 gas tracer involves the preparation of 15N2-enriched water that is then added to each incubation bottle. Investigators typically measure the 15N2 atom% of the 15N2-enriched inoculum by MIMS, and extrapolate the 15N2 atom% in the incubations based on the inoculum value. Here, we demonstrate that such extrapolation yields inaccurate estimates of the 15N2 atom% of incubations. The latter should be measured directly. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/778158
Description
Dataset: trial_b
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Citation
Granger, J., Bourbonnais, A., & Wilson, S. (2019). Trial B test of the dissolution method for estimates of the 15N2 atom% of incubations. Biological and Chemical Oceanography Data Management Office. https://doi.org/10.1575/1912/bco-dmo.778158.1
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