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Julie Granger

Affiliation: University of Connecticut (UConn)

Address: []

Orcid: 0000-0001-9985-9242

Project: The Ocean Nitrogen Imbalance Paradox: Environmental Controls on the Denitrification Isotope Effect (6 datasets)

Dataset	Latest Version Date	Current State
Results from experiment examining 15N-labeled contaminants in commercial 15N2 gas: Detected 15N-labeled nitrate (NO3) in commercial 15N2 gas (15N2 Contamination project) Role: Principal Investigator	2014-12-09	Final no updates expected
Results from experiment examining 15N-labeled contaminants in commercial 15N2 gas: Detected 15N-labeled ammonium (NH4) in commercial 15N2 gas (15N2 Contamination project) Role: Principal Investigator	2014-12-16	Final no updates expected
Results from experiment examining 15N-labeled contaminants in commercial 15N2 gas: 46-N2O contamination measured directly in commercial 15N2 gas (15N2 Contamination project) Role: Principal Investigator	2014-12-16	Final no updates expected
Results from experiment examining 15N-labeled contaminants in commercial 15N2 gas: Particulate Nitrogen - The delta 15N of Dunaliella tertiolecta organic matter after growth in media equilibrated with 15N2 gas Role: Principal Investigator	2015-02-03	Final no updates expected
Results from experiment examining 15N-labeled contaminants in commercial 15N2 gas: The measured quantity of 15N2 added to nitrate and ammonium solutions equilibrated with 15N2 gas Role: Principal Investigator	2015-02-04	Final no updates expected
N and O isotope effects of nitrate reduction by 3 forms of nitrate reductase (15N2 Contamination project) Role: Principal Investigator	2015-08-12	Final no updates expected

Project: U.S. Arctic GEOTRACES Study (GN01) (6 datasets)

Dataset	Latest Version Date	Current State
Nitrate N and O isotope ratios from CTD niskin depth profiles collected along section HLY1502-GN01 in the Western Arctic Ocean from August to October 2015 Role: Principal Investigator	2020-07-09	Final no updates expected
Aerosol Nitrate (NO3) from samples collected on the US GEOTRACES Arctic cruise (HLY1502) from August to October 2015 Role: Co-Principal Investigator	2019-01-17	Final no updates expected
Nitrate (NO3), ammonium (NH4), and oxygen & deuterium isotopic composition from sea ice hole water sampling on the US GEOTRACES Arctic cruise (HLY1502) from August to October 2015 Role: Co-Principal Investigator	2019-01-22	Final no updates expected
Nitrate (NO3), ammonium (NH4), and oxygen & deuterium isotopic composition from snow collected on the US GEOTRACES Arctic cruise (HLY1502) from August to October 2015 Role: Co-Principal Investigator	2019-01-22	Final no updates expected
Nitrate (NO3), ammonium (NH4), and oxygen & deuterium isotopic composition from sea ice collected on the US GEOTRACES Arctic cruise (HLY1502) from August to October 2015 Role: Co-Principal Investigator	2019-01-23	Final no updates expected
Nitrate (NO3) and oxygen & deuterium isotopic composition from ice pond samples collected on the US GEOTRACES Arctic cruise (HLY1502) from August to October 2015 Role: Co-Principal Investigator	2019-01-24	Final no updates expected

Project: Collaborative Research: GEOTRACES Arctic Ocean section-Constraining Nitrogen Cycling in the western Arctic Ocean. (6 datasets)

Dataset	Latest Version Date	Current State
Nitrate N and O isotope ratios from CTD niskin depth profiles collected along section HLY1502-GN01 in the Western Arctic Ocean from August to October 2015 Role: Principal Investigator	2020-07-09	Final no updates expected
Aerosol Nitrate (NO3) from samples collected on the US GEOTRACES Arctic cruise (HLY1502) from August to October 2015 Role: Co-Principal Investigator	2019-01-17	Final no updates expected
Nitrate (NO3), ammonium (NH4), and oxygen & deuterium isotopic composition from sea ice hole water sampling on the US GEOTRACES Arctic cruise (HLY1502) from August to October 2015 Role: Co-Principal Investigator	2019-01-22	Final no updates expected
Nitrate (NO3), ammonium (NH4), and oxygen & deuterium isotopic composition from snow collected on the US GEOTRACES Arctic cruise (HLY1502) from August to October 2015 Role: Co-Principal Investigator	2019-01-22	Final no updates expected
Nitrate (NO3), ammonium (NH4), and oxygen & deuterium isotopic composition from sea ice collected on the US GEOTRACES Arctic cruise (HLY1502) from August to October 2015 Role: Co-Principal Investigator	2019-01-23	Final no updates expected
Nitrate (NO3) and oxygen & deuterium isotopic composition from ice pond samples collected on the US GEOTRACES Arctic cruise (HLY1502) from August to October 2015 Role: Co-Principal Investigator	2019-01-24	Final no updates expected

Project: EAGER: Collaborative Research: Detection limit in marine nitrogen fixation measurements - Constraints of rates from the mesopelagic ocean (8 datasets)

Dataset	Latest Version Date	Current State
Extracted chlorophyll data, particulate carbon and nitrogen, flow cytometry and 15N2/13C rate measurements collected during EN596 from April 2017 in the North Atlantic Role: Co-Principal Investigator	2019-08-05	Data not available
Calibration of the Isotope Ratio Mass Spectrometer vs. aliquots of 15N2 gas diluted in air then helium Role: Principal Investigator	2019-10-02	Final no updates expected
Analysis of dissolved 15N2 gas standards by Membrane Inlet Mass Spectrometry Role: Principal Investigator	2019-10-02	Final no updates expected
Test of integrity of dissolved 15N2 gas samples stored in Exetainer vials Role: Principal Investigator	2019-10-02	Final no updates expected
Comparison of Membrane Inlet Mass Spectrometry (MIMS) to Isotope Ratio Mass Spectrometer (IRMS) Role: Principal Investigator	2019-10-02	Final no updates expected
Test of potential mass to charge 30 interferences from O2 Role: Principal Investigator	2019-10-02	Final no updates expected
Trial A test of the dissolution method for estimates of the 15N2 atom% of incubations Role: Principal Investigator	2019-10-02	Final no updates expected
Trial B test of the dissolution method for estimates of the 15N2 atom% of incubations Role: Principal Investigator	2019-10-02	Final no updates expected

Project: Investigation of mechanisms leading to seasonal hypoxia in the Southern Benguela Upwelling System (1 datasets)

Dataset	Latest Version Date	Current State
Nutrient and nitrate isotope data from the southern Benguela upwelling system from February to August 2017 Role: Principal Investigator	2020-05-19	Final no updates expected

Project: CAREER: The biological nitrogen isotope systematics of ammonium consumption and production (11 datasets)

Dataset	Latest Version Date	Current State
Nitrogen isotope fractionation for ammonium assimilation by marine phytoplankton (Biological Nitrogen Isotope Fractionation project) Role: Principal Investigator	2021-11-15	Data not available
Volume-dependent offsets in NO3- N and O isotope ratios of reference materials (Biological Nitrogen Isotope Fractionation project) Role: Principal Investigator	2021-11-16	Final no updates expected
ẟ15N (ẟ18O) scale contraction was calculated as the percent deviation of the difference between measured ẟ15N (ẟ18O) values of IAEA-NO3 and USGS-34 from the true difference (Biological Nitrogen Isotope Fractionation project) Role: Principal Investigator	2021-11-16	Final no updates expected
Effects of sample volume on N2O recovery and isotopic analysis (Biological Nitrogen Isotope Fractionation project) Role: Principal Investigator	2021-11-16	Final no updates expected
Volume effects on blanks originating from the bacterial concentrates, equilibration with atmospheric N2O, and NO3- contamination of the water into which the standards were diluted from 2017-2020 (Biological Nitrogen Isotope Fractionation project) Role: Principal Investigator	2021-11-16	Final no updates expected
Analyses of nitrate reference solutions in 18O-labeled water with the denitrifier method (Biological Nitrogen Isotope Fractionation project) Role: Principal Investigator	2021-11-29	Final no updates expected
O exchange with water during denitrification with the denitrifier method (Biological Nitrogen Isotope Fractionation project) Role: Principal Investigator	2021-12-01	Final no updates expected
Simulation of δ15N and δ18O scale contraction, given the observation of the fraction of O atom exchange with water and blanks (Biological Nitrogen Isotope Fractionation project) Role: Principal Investigator	2021-12-01	Final no updates expected
Simulation of the volume-dependent changes in ẟ15N and ẟ18O for IAEA-NO3 and USGS-34 reference materials (Biological Nitrogen Isotope Fractionation project) Role: Principal Investigator	2021-12-01	Final no updates expected
Phytoplankton Nitrogen isotope fractionation Role: Principal Investigator	2024-03-08	Preliminary and in progress
Nitrate 15N/14N measurements in two adjacent mesoscale eddies in the North Pacific Subtropical Gyre from water samples collected on R/V Kilo Moana cruise KM1709 in June-July 2017 Role: Principal Investigator	2025-01-13	Final no updates expected

Project: Collaborative Research: Refining the use of scleractinian cold-water coral skeleton-bound d15N as a proxy for marine N cycling (6 datasets)

Dataset	Latest Version Date	Current State
Nitrogen isotope ratio data for coral tissue and skeleton samples of the scleractinian cold-water coral Balanophyllia elegans collected at Friday Harbor, WA from experiments conducted between 2019 and 2021 Role: Co-Principal Investigator	2024-02-08	Final no updates expected
Experimental data (coral diet and tissue d15N) from a culture experiment with scleractinian cold-water coral Balanophyllia elegans collected at Friday Harbor, WA from experiments conducted between 2019 and 2020 Role: Co-Principal Investigator	2024-02-09	Final no updates expected
Data for Artemia fed to corals (Balanophyllia elegans) during a culture experiment conducted to evaluate the relationship between coral diet and tissue nitrogen isotopic ratio from 2019 to 2021 Role: Co-Principal Investigator	2024-02-09	Final no updates expected
Particulate data collected near Friday Harbor, WA between 2020 and 2021 as part of a study of cold-water coral Balanophyllia elegans diet and trophic position Role: Co-Principal Investigator	2024-02-09	Final no updates expected
Experimental data (d15N and d13C) from a starvation experiment with scleractinian cold-water coral Balanophyllia elegans collected at Friday Harbor, WA with experiments conducted between 2020 and 2022 Role: Co-Principal Investigator	2024-02-09	Final no updates expected
CTD data from casts at Friday Harbor, WA in August of 2021 as part of a study of cold-water coral Balanophyllia elegans diet and trophic position Role: Co-Principal Investigator	2024-02-09	Final no updates expected

Project: Collaborative Research: Exploring the dynamics of nitrous oxide in the Southern Benguela Upwelling System (1 datasets)

Dataset	Latest Version Date	Current State
Nutrient, CTD Profile, and Nitrous oxide data from the Southern Benguela Upwelling System (Integrated Environmental Programme, February 2017) Role: Principal Investigator	2025-08-12	Data not available