http://lod.bco-dmo.org/id/dataset/865685
eng; USA
utf8
dataset
Highest level of data collection, from a common set of sensors or instrumentation, usually within the same research project
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
2021-12-01
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Simulation of the volume-dependent changes in ẟ15N and ẟ18O for IAEA-NO3 and USGS-34 reference materials (Biological Nitrogen Isotope Fractionation project)
2021-12-01
publication
2021-12-01
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2022-01-14
publication
https://doi.org/10.26008/1912/bco-dmo.865685.1
Julie Granger
University of Connecticut
principalInvestigator
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
publisher
Cite this dataset as: Zhou, M., Granger, J. (2022) Simulation of the volume-dependent changes in ẟ15N and ẟ18O for IAEA-NO3 and USGS-34 reference materials (Biological Nitrogen Isotope Fractionation project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2021-12-01 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.865685.1 [access date]
Simulation of the volume-dependent changes in ẟ15N and ẟ18O for IAEA-NO3 and USGS-34 reference materials Dataset Description: Methods and Sampling: <p><strong>Sampling and analytical procedures:&nbsp;</strong></p>
<p>
<strong>Effects of sample volume and salinity on O atom exchange with water</strong></p>
<p>Given the potential influences on NO<sub>3</sub><sup>-</sup> N and O isotope ratios, which include bacterial blanks, dissolved atmospheric N<sub>2</sub>O, contaminant NO<sub>3</sub><sup>-</sup> in reference materials, O atom exchange with water, and incomplete N<sub>2</sub>O recovery and associated isotope fractionation, we attempt to reproduce the volume-dependent changes in ẟ<sup>15</sup>N and ẟ<sup>18</sup>O that we observed for IAEA-NO3 and USGS-34 reference materials.</p>
<p>The observed ä<sup>15</sup>N and ä<sup>18</sup>O values of N<sub>2</sub>O for IAEA-NO3 and USGS-34 samples were referenced to that expected for IAEA-NO3 vs. the N<sub>2</sub>O reference tank. The expected IAEA-NO3 has a ä<sup>15</sup>N of 0‰ vs. IAEA-NO3, and that expected for USGS-34 is -6.5‰ vs. IAEA-NO3. Being uncertain of the ä<sup>18</sup>O of the industrial N<sub>2</sub>O in the reference tank, we approximate the expected ä<sup>18</sup>O value for IAEA-NO3 vs. N<sub>2</sub>O<sub>ref</sub> to be that observed for the highest N<sub>2</sub>O yield (at lower aliquot volumes – which is admittedly already subject to blanks). Referenced to itself, the expected ä<sup>18</sup>O of IAEA-NO3 is 0‰ (vs. IAEA-NO3), and that for USGS-34 is -52.2‰ (vs. IAEA-NO3).</p>
<p>We compare the simulated ä<sup>15</sup>N and ä<sup>18</sup>O values to the observed average of 3 trials in dataset “Incidence of volume effect.”</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1554474 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1554474
completed
Julie Granger
University of Connecticut
860-405-9094
Department of Marine Sciences 1080 Shenecossett Road
Groton
CT
06340
USA
julie.granger@uconn.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Aliquot_volume
Solution
Observed_delta_15N_pcnt
stdev_of_observed_delta_15N
Expected_delta_15N_pcnt
plus_blks_delta_15N_pcnt
plus_sparge_delta_15N_pcnt
Observed_delta_18O_pcnt
stdev_of_observed_delta_18O_pcnt
Expected_delta_18O_pcnt
plus_blks_and_x_delta_18O_pcnt
plus_sparge_delta_18O_pcnt
theme
None, User defined
volume
Nitrate
d15N
oxygen 16 to oxygen 18 ratio
featureType
BCO-DMO Standard Parameters
otherRestrictions
otherRestrictions
Access Constraints: none. Use Constraints: Please follow guidelines at: http://www.bco-dmo.org/terms-use Distribution liability: Under no circumstances shall BCO-DMO be liable for any direct, incidental, special, consequential, indirect, or punitive damages that result from the use of, or the inability to use, the materials in this data submission. If you are dissatisfied with any materials in this data submission your sole and exclusive remedy is to discontinue use.
CAREER: The biological nitrogen isotope systematics of ammonium consumption and production
https://osprey.bco-dmo.org/project/856532
CAREER: The biological nitrogen isotope systematics of ammonium consumption and production
<p><strong>NSF Award Abstract:</strong><br />
The nitrogen (N) cycle in the marine environment is controlled by biological processes. Unfortunately, quantifying these processes and assessing their effect on the N cycle is difficult by direct measurements because of large spatial and temporal differences. Isotopic composition measurements of N provide a means to constrain these processes indirectly; however, there is still a great deal to be understood about isotope fractionation of recycled nitrogen through biological processes, which has made interpretation of novel nitrogen isotope data difficult. A researcher from the University of Connecticut plans to determine the influence of biological consumption and production on the isotope fractionation in ammonium. By helping to understand the processes surrounding fractionation of recycled ammonium at the organism level, this research will create a basis for which future researchers can better interpret isotope composition data to infer nitrogen cycle dynamics. A graduate student, a postdoctoral fellow, and two or more undergraduate students will be involved in the research. The researcher plans to integrate science with community-engaged learning by developing an undergraduate field and laboratory course that will require the students to present their research to stakeholders in the community. There will be a manual created for this course that will be disseminated in open-access forums for teachers hoping to develop similar courses.</p>
<p>Biological nitrogen isotope fractionation associated with nitrogen recycling remains poorly constrained despite the advent of a variety of new techniques to analyze nitrogen isotopes in recent years. The use of isotopic composition data can be incredibly useful to interpreting nitrogen cycle processes in the ocean that are difficult to measure directly, which makes it crucial to further understand the processes behind fractionation to catch up with the advancement of the datasets available to researchers. This research will characterize the isotope fractionation dynamics of ammonium during biological consumption and production. The researchers will investigate whether the characteristic low concentrations of ammonium in the surface ocean affect isotope fractionation when the ammonium is recycled and whether there is a trophic isotope effect associated with ammonium recycling by protozoan grazers. With this research, there will be a baseline from which researchers can interpret recycled nitrogen dynamics from ammonium isotope datasets. The methods of comparing nitrogen cycling studies will become significantly clearer with such a standard making interpretation uniform by removing significant uncertainties.</p>
Biological Nitrogen Isotope Fractionation
largerWorkCitation
project
eng; USA
oceans
2021-12-01
0
BCO-DMO catalogue of parameters from Simulation of the volume-dependent changes in ẟ15N and ẟ18O for IAEA-NO3 and USGS-34 reference materials (Biological Nitrogen Isotope Fractionation project)
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
http://lod.bco-dmo.org/id/dataset-parameter/868134.rdf
Name: Aliquot_volume
Units: mL
Description: <p>Sample volume injected to aliquot 10 nmol of nitrate</p>
http://lod.bco-dmo.org/id/dataset-parameter/868135.rdf
Name: Solution
Units: unitless
Description: <p>Nitrate reference materials IAEA-NO3 and USGS-34</p>
http://lod.bco-dmo.org/id/dataset-parameter/868136.rdf
Name: Observed_delta_15N_pcnt
Units: ‰ vs. IAEA-NO3
Description: <p>Observed mean delta_15N of DIW and seawater samples in the 3 trials in Datasheet "Incidence of volume effect"</p>
http://lod.bco-dmo.org/id/dataset-parameter/868137.rdf
Name: stdev_of_observed_delta_15N
Units: unitlless
Description: <p>The standard deviation of trial means of delta_15N</p>
http://lod.bco-dmo.org/id/dataset-parameter/868138.rdf
Name: Expected_delta_15N_pcnt
Units: ‰ vs. IAEA-NO3
Description: <p>IAEA-NO3 has a delta_15N of 0‰ vs. IAEA-NO3, and that expected for USGS-34 is -6.5‰ vs. IAEA-NO3.</p>
http://lod.bco-dmo.org/id/dataset-parameter/868139.rdf
Name: plus_blks_delta_15N_pcnt
Units: ‰ vs. IAEA-NO3
Description: <p>delta_15N simulation accounting for a bacterial blank of 0.06 nmol N, atmospheric N2O of 0.013 nmol N mL-1, and nitrate contaminant in the solutions of 0.016 N nmol mL-1.</p>
http://lod.bco-dmo.org/id/dataset-parameter/868140.rdf
Name: plus_sparge_delta_15N_pcnt
Units: ‰ vs. IAEA-NO3
Description: <p>delta_15N simulation accounting for blanks and the influence of incomplete sample sparging on the delta_15N values</p>
http://lod.bco-dmo.org/id/dataset-parameter/868141.rdf
Name: Observed_delta_18O_pcnt
Units: ‰ vs. IAEA-NO3
Description: <p>Observed mean delta_18O of DIW and seawater sample in the 3 trials in Datasheet "Incidence of volume effect"</p>
http://lod.bco-dmo.org/id/dataset-parameter/868142.rdf
Name: stdev_of_observed_delta_18O_pcnt
Units: unitless
Description: <p>The standard deviation of trial means of delta_18O</p>
http://lod.bco-dmo.org/id/dataset-parameter/868143.rdf
Name: Expected_delta_18O_pcnt
Units: ‰ vs. IAEA-NO3
Description: <p>IAEA-NO3 has a delta_18O of 0‰ vs. IAEA-NO3, and that expected for USGS-34 is -52.2‰ vs. IAEA-NO3.</p>
http://lod.bco-dmo.org/id/dataset-parameter/868144.rdf
Name: plus_blks_and_x_delta_18O_pcnt
Units: ‰ vs. IAEA-NO3
Description: <p>_18O simulation accounting for a bacterial blank of 0.06 nmol N, atmospheric N2O of 0.013 nmol N mL-1, nitrate contaminant in the solutions of 0.016 N nmol mL-1, and O atom exchange fraction of 3%</p>
http://lod.bco-dmo.org/id/dataset-parameter/868145.rdf
Name: plus_sparge_delta_18O_pcnt
Units: ‰ vs. IAEA-NO3
Description: <p>_18O simulation accounting for blanks, O atom exchange, and the influence of incomplete sample sparging on the _18O values</p>
GB/NERC/BODC > British Oceanographic Data Centre, Natural Environment Research Council, United Kingdom
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
681
https://darchive.mblwhoilibrary.org/bitstream/1912/27943/1/dataset-865685_isotope-ratio-simulation__v1.tsv
download
https://doi.org/10.26008/1912/bco-dmo.865685.1
download
onLine
dataset
<p><strong>Sampling and analytical procedures:&nbsp;</strong></p>
<p>
<strong>Effects of sample volume and salinity on O atom exchange with water</strong></p>
<p>Given the potential influences on NO<sub>3</sub><sup>-</sup> N and O isotope ratios, which include bacterial blanks, dissolved atmospheric N<sub>2</sub>O, contaminant NO<sub>3</sub><sup>-</sup> in reference materials, O atom exchange with water, and incomplete N<sub>2</sub>O recovery and associated isotope fractionation, we attempt to reproduce the volume-dependent changes in ẟ<sup>15</sup>N and ẟ<sup>18</sup>O that we observed for IAEA-NO3 and USGS-34 reference materials.</p>
<p>The observed ä<sup>15</sup>N and ä<sup>18</sup>O values of N<sub>2</sub>O for IAEA-NO3 and USGS-34 samples were referenced to that expected for IAEA-NO3 vs. the N<sub>2</sub>O reference tank. The expected IAEA-NO3 has a ä<sup>15</sup>N of 0‰ vs. IAEA-NO3, and that expected for USGS-34 is -6.5‰ vs. IAEA-NO3. Being uncertain of the ä<sup>18</sup>O of the industrial N<sub>2</sub>O in the reference tank, we approximate the expected ä<sup>18</sup>O value for IAEA-NO3 vs. N<sub>2</sub>O<sub>ref</sub> to be that observed for the highest N<sub>2</sub>O yield (at lower aliquot volumes – which is admittedly already subject to blanks). Referenced to itself, the expected ä<sup>18</sup>O of IAEA-NO3 is 0‰ (vs. IAEA-NO3), and that for USGS-34 is -52.2‰ (vs. IAEA-NO3).</p>
<p>We compare the simulated ä<sup>15</sup>N and ä<sup>18</sup>O values to the observed average of 3 trials in dataset “Incidence of volume effect.”</p>
Specified by the Principal Investigator(s)
<p><strong>Processing notes from researcher:</strong></p>
<ul>
<li>Data were processed using Microsoft Excel</li>
</ul>
Specified by the Principal Investigator(s)
asNeeded
7.x-1.1
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact