http://lod.bco-dmo.org/id/dataset/739646
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
2018-07-10
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Dissolved and sinking particulate organic nitrogen data from a large volume mesocosm experiment in the Noumea Lagoon, New Caledonia, measured from January to February 2013
2018-07-10
publication
2018-07-10
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2019-11-21
publication
https://doi.org/10.1575/1912/bco-dmo.739646.1
Angela N. Knapp
Florida State University
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: Knapp, A. (2018) Dissolved and sinking particulate organic nitrogen data from a large volume mesocosm experiment in the Noumea Lagoon, New Caledonia, measured from January to February 2013. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2018-07-10 [if applicable, indicate subset used]. doi:10.1575/1912/bco-dmo.739646.1 [access date]
Dataset Description: <p>These data were published in&nbsp;Knapp et al., 2016, Biogeosciences, Supplementary Table 1.</p> Methods and Sampling: Sampling and analytical procedures:
The concentration of total nitrogen (TN) for samples was determined by persulfate oxidation (Solorzano and Sharp, 1980) with adaptations (Knapp et al., 2005), and the resulting NO3- was measured by chemiluminescence (Braman and Hendrix, 1989). DON concentration was determined by subtracting the concentrations of PNsusp, NH4+, and NO3-+NO2- (reported in Berthelot et al., 2015, Biogeosciences) from the measured TN concentration of each sample with a propagated error of +/- 0.5 μM. The d15N of the resulting NO3- was measured using the denitrifier method (Casciotti et al., 2002; McIlvin and Casciotti, 2011; Sigman et al., 2001).
The d15N of PNsink was measured using a Thermo Scientific Flash 2000 Elemental Analyzer coupled with a Delta Plus Thermo Scientific mass spectrometer.
The average standard deviation for individual DON concentration measurements was +/- 0.3 µM. DON concentration was determined by subtracting the concentrations of PNsusp, NH4+, and NO3-+NO2- (reported in Berthelot et al., 2015, Biogeosciences) from the measured TN concentration of each sample with a propagated error of +/- 0.5 μM.
The d15N of TN was determined via persulfate oxidation of TN to NO3- (Knapp et al., 2005) and subsequent analysis of NO3- d15N by the denitrifier method, with a propagated error for DON d15N calculated using a Monte Carlo method (Press et al., 1992) of +/- 0.6‰. Samples were calibrated with IAEA N3 and USGS 34 NO3- d15N isotopic reference materials as described in McIlvin and Casciotti, 2011.
The d15N of PNsink was measured using a Thermo Scientific Flash 2000 Elemental Analyzer coupled
with a Delta Plus Thermo Scientific mass spectrometer. The average standard deviation for standards was +/- 0.06‰.
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1537314 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1537314
completed
Angela N. Knapp
Florida State University
(979) 862-5235
797 Lamar St. Dept of Oceanography, Eller O&M Room 1204
College Station
TX
77843
USA
aknapp@tamu.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Sampling_Date
M1_DON
M1_DONd15N
M2_DON
M2_DONd15N
M3_DON
M3_DONd15N
M1_d15NPNsink
M2_d15NPNsink
M3_d15NPNsink
Thermo Scientific 42i chemiluminescent NOx
Thermo Scientific Flash 2000 Elemental Analyzer
Thermo Delta V isotope ratio mass spectrometer
theme
None, User defined
date
Dissolved Organic Nitrogen
Nitrogen
featureType
BCO-DMO Standard Parameters
Chemiluminescence NOx Analyzer
Elemental Analyzer
Isotope-ratio Mass Spectrometer
instrument
BCO-DMO Standard Instruments
VAHINE
service
Deployment Activity
Noumea, New Caledonia
place
Locations
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.
Quantifying nitrogen fixation along unique geochemical gradients in the southwest Pacific Ocean
http://scope.soest.hawaii.edu/data/lava/lava.html
Quantifying nitrogen fixation along unique geochemical gradients in the southwest Pacific Ocean
<p><em>NSF Award Abstract:</em><br />
The availability of nitrogen in the surface ocean plays a critical role regulating rates of primary productivity in the ocean, and thus through modification of the carbon cycle, nitrogen has the capacity to influence climate. The dominant source of biologically available nitrogen to the ocean is through a process known as di-nitrogen (N2) fixation, which involves the reduction of N2 gas dissolved in seawater to ammonium by microbes referred to as diazotrophs. While significant progress has been made identifying a diversity of marine diazotrophs in recent years using molecular tools, quantifying global rates of N2 fixation, and identifying which ocean basin supports the highest fluxes, has remained a vexing question. This research will quantify rates of N2 fixation as well as its importance for supporting production in the southwest Pacific Ocean. Results from this research will shed light on the sensitivities of N2 fixation (temperature, iron concentrations) as well as the extent of spatial and temporal coupling of nitrogen sources and sinks in the ocean. The work will be carried out by an early career scientist, and involve mentoring of young women, middle school girls and minorities, training of undergraduate and graduate researchers, and international collaborations.</p>
<p>Identifying the spatial distribution of the largest di-nitrogen (N2) fixation fluxes to the ocean remains a critical goal of chemical oceanography. The spatial distribution can inform our understanding of the environmental sensitivities of N2 fixation and the capacity for the dominant marine nitrogen (N) source and sink processes to respond to each other and thus influence the global carbon cycle and climate. In addition to temperature, two factors are at the heart of the current debate over what influences the spatial distribution of N2 fixation in the ocean: 1) the presence of adequate iron to meet the needs of N2 fixing microbes, and, 2) the absolute concentrations as well as ratios of surface ocean nitrate and phosphate concentrations that are low relative to the "Redfield" ratio, which are thought to favor N2 fixing microbes. This project will test the effects of gradients in atmospheric dust deposition on N2 fixation rates when surface waters have relatively constant but favorable nitrate to phosphate concentrations. The work will be carried out in the southwest Pacific, a region highlighted by new modeling work for its unique geochemical characteristics that are expected to favor significant N2 fixation fluxes. Nitrate+nitrite d15N as well as total dissolved nitrogen (TDN) concentration and d15N will be measured in water column samples collected on a French cruise and sediment traps were deployed to capture the sinking particulate N flux. The results will be compared with published work to evaluate which ocean regions support the largest N2 fixation fluxes.</p>
<p>More information:</p>
<p>This project was part of the Oligotrophy to UlTra-oligotrophy PACific Experiment (OUTPACE) cruise in the Southwest Pacific between New Caledonia (166°28' E; 22°14' S) and Tahiti (149°36' W; 17°34' S) 0-2000 m<br />
* OUTPACE cruise (doi: <a href="http://dx.doi.org/10.17600/15000900" target="_blank">http://dx.doi.org/10.17600/15000900</a>)<br />
* OUTPACE website: <a href="https://outpace.mio.univ-amu.fr/?lang=en">https://outpace.mio.univ-amu.fr/?lang=en</a></p>
SW Pac N2 fixation
largerWorkCitation
project
eng; USA
oceans
Noumea, New Caledonia
166.4454
166.4454
-22.48092
-22.48092
2013-01-14
2013-02-06
Southwest Pacific Ocean between New Caledonia and Tahiti along ~18 deg S
0
BCO-DMO catalogue of parameters from Dissolved and sinking particulate organic nitrogen data from a large volume mesocosm experiment in the Noumea Lagoon, New Caledonia, measured from January to February 2013
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/739677.rdf
Name: Sampling_Date
Units: unitless
Description: <p>Sample date in format "dd-mmm-yyyy"</p>
http://lod.bco-dmo.org/id/dataset-parameter/739678.rdf
Name: M1_DON
Units: micromolar (uM)
Description: <p>Dissolved organic nitrogen (replicate "M1")</p>
http://lod.bco-dmo.org/id/dataset-parameter/739679.rdf
Name: M1_DONd15N
Units: per mil (0/00)
Description: <p>Dissolved organic nitrogen isotopic composition (replicate "M1")</p>
http://lod.bco-dmo.org/id/dataset-parameter/739680.rdf
Name: M2_DON
Units: micromolar (uM)
Description: <p>Dissolved organic nitrogen (replicate "M2")</p>
http://lod.bco-dmo.org/id/dataset-parameter/739681.rdf
Name: M2_DONd15N
Units: per mil (0/00)
Description: <p>Dissolved organic nitrogen isotopic composition (replicate "M2")</p>
http://lod.bco-dmo.org/id/dataset-parameter/739682.rdf
Name: M3_DON
Units: micromolar (uM)
Description: <p>Dissolved organic nitrogen (replicate "M3")</p>
http://lod.bco-dmo.org/id/dataset-parameter/739683.rdf
Name: M3_DONd15N
Units: per mil (0/00)
Description: <p>Dissolved organic nitrogen isotopic composition (replicate "M3")</p>
http://lod.bco-dmo.org/id/dataset-parameter/739684.rdf
Name: M1_d15NPNsink
Units: per mil (0/00)
Description: <p>Sinking particulate nitrogen isotopic composition (replicate "M1")</p>
http://lod.bco-dmo.org/id/dataset-parameter/739685.rdf
Name: M2_d15NPNsink
Units: per mil (0/00)
Description: <p>Sinking particulate nitrogen isotopic composition (replicate "M2")</p>
http://lod.bco-dmo.org/id/dataset-parameter/739686.rdf
Name: M3_d15NPNsink
Units: per mil (0/00)
Description: <p>Sinking particulate nitrogen isotopic composition (replicate "M3")</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
1146
https://darchive.mblwhoilibrary.org/bitstream/1912/24880/1/dataset-739646_vahine-nitrogen__v1.tsv
download
https://doi.org/10.1575/1912/bco-dmo.739646.1
download
onLine
dataset
Sampling and analytical procedures:
The concentration of total nitrogen (TN) for samples was determined by persulfate oxidation (Solorzano and Sharp, 1980) with adaptations (Knapp et al., 2005), and the resulting NO3- was measured by chemiluminescence (Braman and Hendrix, 1989). DON concentration was determined by subtracting the concentrations of PNsusp, NH4+, and NO3-+NO2- (reported in Berthelot et al., 2015, Biogeosciences) from the measured TN concentration of each sample with a propagated error of +/- 0.5 μM. The d15N of the resulting NO3- was measured using the denitrifier method (Casciotti et al., 2002; McIlvin and Casciotti, 2011; Sigman et al., 2001).
The d15N of PNsink was measured using a Thermo Scientific Flash 2000 Elemental Analyzer coupled with a Delta Plus Thermo Scientific mass spectrometer.
The average standard deviation for individual DON concentration measurements was +/- 0.3 µM. DON concentration was determined by subtracting the concentrations of PNsusp, NH4+, and NO3-+NO2- (reported in Berthelot et al., 2015, Biogeosciences) from the measured TN concentration of each sample with a propagated error of +/- 0.5 μM.
The d15N of TN was determined via persulfate oxidation of TN to NO3- (Knapp et al., 2005) and subsequent analysis of NO3- d15N by the denitrifier method, with a propagated error for DON d15N calculated using a Monte Carlo method (Press et al., 1992) of +/- 0.6‰. Samples were calibrated with IAEA N3 and USGS 34 NO3- d15N isotopic reference materials as described in McIlvin and Casciotti, 2011.
The d15N of PNsink was measured using a Thermo Scientific Flash 2000 Elemental Analyzer coupled
with a Delta Plus Thermo Scientific mass spectrometer. The average standard deviation for standards was +/- 0.06‰.
Specified by the Principal Investigator(s)
<p>BCO-DMO Data Manager Processing Notes:<br />
* added a conventional header with dataset name, PI name, version date<br />
* modified parameter names to conform with BCO-DMO naming conventions<br />
* blank values in this dataset are displayed as "nd" for "no data."&nbsp; nd is the default missing data identifier in the BCO-DMO system.</p>
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
Thermo Scientific 42i chemiluminescent NOx
Thermo Scientific 42i chemiluminescent NOx
PI Supplied Instrument Name: Thermo Scientific 42i chemiluminescent NOx PI Supplied Instrument Description:DON concentration was measured on a Thermo Scientific 42i chemiluminescent NOx box. Instrument Name: Chemiluminescence NOx Analyzer Instrument Short Name: Instrument Description: The chemiluminescence method for gas analysis of oxides of nitrogen relies on the measurement of light produced by the gas-phase titration of nitric oxide and ozone. A chemiluminescence analyzer can measure the concentration of NO/NO2/NOX.
One example is the Teledyne Model T200: https://www.teledyne-api.com/products/nitrogen-compound-instruments/t200
Thermo Scientific Flash 2000 Elemental Analyzer
Thermo Scientific Flash 2000 Elemental Analyzer
PI Supplied Instrument Name: Thermo Scientific Flash 2000 Elemental Analyzer PI Supplied Instrument Description:The d15N of PNsink was measured using a Thermo Scientific Flash 2000 Elemental Analyzer coupled with a Delta Plus Thermo Scientific mass spectrometer.
Instrument Name: Elemental Analyzer Instrument Short Name: Instrument Description: Instruments that quantify carbon, nitrogen and sometimes other elements by combusting the sample at very high temperature and assaying the resulting gaseous oxides. Usually used for samples including organic material. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB01/
Thermo Delta V isotope ratio mass spectrometer
Thermo Delta V isotope ratio mass spectrometer
PI Supplied Instrument Name: Thermo Delta V isotope ratio mass spectrometer PI Supplied Instrument Description:DON d15N was measured on a Thermo Delta V isotope ratio mass spectrometer. Instrument Name: Isotope-ratio Mass Spectrometer Instrument Short Name:IR Mass Spec; IRMS Instrument Description: The Isotope-ratio Mass Spectrometer is a particular type of mass spectrometer used to measure the relative abundance of isotopes in a given sample (e.g. VG Prism II Isotope Ratio Mass-Spectrometer). Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB16/
Deployment: VAHINE
VAHINE
shoreside New Caledonia
island
VAHINE
Thierry Moutin
Mediterranean Institute of Oceanography
http://mio.pytheas.univ-amu.fr/?VAHINE-Project
Report describing VAHINE
shoreside New Caledonia
island