http://lod.bco-dmo.org/id/dataset/746854
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
2018-10-01
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
d15N of size-fractionated particulate organic nitrogen (PON) from net tows in the Sargasso Sea at BATS and Hydro Station S
2018-10-01
publication
2018-10-01
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2020-01-10
publication
https://doi.org/10.1575/1912/bco-dmo.746854.1
Daniel M. Sigman
Princeton 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: Sigman, D. (2018) d15N of size-fractionated particulate organic nitrogen (PON) from net tows in the Sargasso Sea at BATS and Hydro Station S. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2018-10-01 [if applicable, indicate subset used]. doi:10.1575/1912/bco-dmo.746854.1 [access date]
d15N of size-fractionated particulate organic nitrogen (PON) from net tows in the Sargasso Sea Dataset Description: <p>d15N of size-fractionated particulate organic nitrogen (PON) from net tows in the Sargasso Sea&nbsp;(off Bermuda) in the western subtropical North Atlantic. Net tow samples from 0-200 m at BATS (31°40’N, 64°10’W) and Hydro Station S (32°10’N, 64°34’W).</p>
<p>Data published in:<br />
Smart, S.M., H. Ren, S.E. Fawcett, R. Schiebel, M. Conte, P.A. Rafter, K.K. Ellis, M.A. Weigand, S. Oleynik, G.H. Haug, D.M. Sigman (2018). Ground-truthing the planktic foraminifer-bound nitrogen isotope paleo-proxy in the Sargasso Sea, Geochimica et Cosmochimica Acta, doi: <a href="https://doi.org/10.1016/j.gca.2018.05.023" target="_blank">https://doi.org/10.1016/j.gca.2018.05.023</a></p> Methods and Sampling: <p>PON samples were collected from the upper 200 m of the water column using a 1-m2, 200-um-mesh plankton net aboard the R/V Atlantic Explorer during ten cruises between July 2011 and November 2013. Approximately 10% of the tow material was size-fractionated and freeze-dried for elemental and isotopic analysis of PON. See methods section of Smart et al. (2018) for more details of sample collection, isotope analysis, and data quality.</p>
<p>The d15N of tow-collected, size-fractionated PON was determined by elemental analyzer-isotope ratio mass spectrometry (an Elementar Vario Isotope Cube online to an Elementar Isoprime visION), referencing to atmospheric N2 using USGS-40 and an in-house aminocaproic acid standard.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-0960802 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=0960802
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1136345 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1136345
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1060947 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1060947
completed
Daniel M. Sigman
Princeton University
609-258-2194
Department of Geosciences M52 Guyot Hall
Princeton
NJ
08544
USA
sigman@princeton.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
cruise
date
depth
size_fraction
d15N_AVG
d15N_stdev
num_measurements
Elementar Vario Isotope Cube
Elementar Isoprime visION
mesh plankton net
theme
None, User defined
Cruise identfier
date
depth
sample fraction (includes size fractions)
d15N
numb_obs
featureType
BCO-DMO Standard Parameters
Elemental Analyzer
Isotope-ratio Mass Spectrometer
Plankton Net
instrument
BCO-DMO Standard Instruments
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.
Understanding the nitrogen isotopes of planktonic foraminifera: A modern Sargasso Sea study
https://osprey.bco-dmo.org/project/743583
Understanding the nitrogen isotopes of planktonic foraminifera: A modern Sargasso Sea study
<p><em>NSF Award Abstract:</em><br />
Nitrogen (N) and phosphorus are the two nutrients required in large quantity by phytoplankton in the ocean, and together they limit productivity throughout most of the tropical, subtropical, and temperate ocean. Both the cycling of N and its input/output budget have been argued to control the fertility of the ocean and the ocean's role in setting atmospheric CO2. The CaCO3 tests of foraminifera can represent a substantial fraction of marine sediments and have been used extensively in paleoceanography; they are an obvious target for isotopic analysis of microfossil-bound organic matter.</p>
<p>In recent years, researchers at Princeton have developed a protocol for the isotopic analysis of foraminiferal shell-bound N. The current protocol is at least 100 times more sensitive than typical on-line combustion, allowing for rapid progress with a N isotope archive that was previously not feasible to measure. Measurements on surface sediments and a downcore record from the Caribbean show the promise of foraminifera-bound del15N (fb-del15N) to provide both a robust N isotope archive for paleoceanography, and one with a unique potential of richness, given the existence of multiple foraminiferal species with different depth habitats and behaviors. Moreover, the finding from the Caribbean Sea record -- reduced N fixation in ice age Atlantic -- has changed the scientific conversation about the nature of the input/output budget of oceanic fixed N and its potential to change ocean fertility and atmospheric CO2. However, the controls on fb-del15N have not yet been adequately studied.</p>
<p>In this project, as a first major step in developing a foundation for the paleoceanographic application of fb-del15N, the same Princeton University team will study its genesis in the water column, transport to the seafloor, and early diagenesis. They will undertake this study in the Sargasso Sea south of Bermuda. This is one of the best studied regions of the ocean, in general and with respect to foraminifera, and a region that has been has been a focus of the N isotope research of the PI for the last decade and others previously. Moreover, its significant seasonality -- in physical oceanography, biogeochemistry, and foraminiferal species abundance -- will facilitate the effort to understand the controls on fb-del15N at a mechanistic level. The research team will participate in six Bermuda Atlantic Time-series Study (BATS) cruises over two years, collecting foraminifera and other N forms likely to provide insight into the controls on fb-del15N. From the nearby Oceanic Flux Program (OFP) moored sediment traps and from shallow sediments collected in the region, they will pick foraminifera shells and again make relevant ancillary measurements. This work will establish the relationship of foraminiferal biomass to shell-bound del15N for different species, and comparison of the foraminiferal isotope data with the upper ocean N pools will yield empirical isotopic relationships and work toward a mechanistic insight of fb-del15N (e.g., the importance of different N pools to the diets of different foraminifera; the role of algal symbionts). The sediment trap and surface sediment data will support the plankton tow data by integrating over longer time scales and will also address questions regarding late stage (e.g., gametogenic) calcification and the early diagenesis of fb-del15N and fb-N content.</p>
<p>Broader Impacts: This study will yield an improved understanding of the nutrient dynamics of foraminifera, a class of organisms whose shells are a central tool in micropaleontology and paleoclimatology. The project will also build on the principal investigator's involvement in the Bermuda Institute of Ocean Sciences as an asset for integrating ocean-related education and research at both the undergraduate and graduate levels.</p>
N Isotopes Foraminifera
largerWorkCitation
project
eng; USA
oceans
-64.567
-64.167
31.667
32.167
2011-07-01
2013-11-01
Sargasso Sea
0
BCO-DMO catalogue of parameters from d15N of size-fractionated particulate organic nitrogen (PON) from net tows in the Sargasso Sea at BATS and Hydro Station S
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/746872.rdf
Name: cruise
Units: unitless
Description: <p>Cruise identifier</p>
http://lod.bco-dmo.org/id/dataset-parameter/746873.rdf
Name: date
Units: unitless
Description: <p>Date of collection (month and 2-digit year)</p>
http://lod.bco-dmo.org/id/dataset-parameter/746874.rdf
Name: depth
Units: meters
Description: <p>Sample depth</p>
http://lod.bco-dmo.org/id/dataset-parameter/746875.rdf
Name: size_fraction
Units: micrometers (um)
Description: <p>Size fraction</p>
http://lod.bco-dmo.org/id/dataset-parameter/746876.rdf
Name: d15N_AVG
Units: per mil
Description: <p>Average d15N (per mil vs. AIR). d15N is the nitrogen isotopic composition of a sample expressed in delta notation (d15N in units of per mil, ‰) relative to atmospheric N2, where d15N = {[(15N/14N)sample/(15N/14N)atmN2] – 1} × 1000.</p>
http://lod.bco-dmo.org/id/dataset-parameter/746877.rdf
Name: d15N_stdev
Units: per mil
Description: <p>Standard deviation of d15N_AVG</p>
http://lod.bco-dmo.org/id/dataset-parameter/746878.rdf
Name: num_measurements
Units: unitless
Description: <p>Number of measurements</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
3896
https://darchive.mblwhoilibrary.org/bitstream/1912/25130/1/dataset-746854_d15n-pon-net-tows__v1.tsv
download
https://doi.org/10.1575/1912/bco-dmo.746854.1
download
onLine
dataset
<p>PON samples were collected from the upper 200 m of the water column using a 1-m2, 200-um-mesh plankton net aboard the R/V Atlantic Explorer during ten cruises between July 2011 and November 2013. Approximately 10% of the tow material was size-fractionated and freeze-dried for elemental and isotopic analysis of PON. See methods section of Smart et al. (2018) for more details of sample collection, isotope analysis, and data quality.</p>
<p>The d15N of tow-collected, size-fractionated PON was determined by elemental analyzer-isotope ratio mass spectrometry (an Elementar Vario Isotope Cube online to an Elementar Isoprime visION), referencing to atmospheric N2 using USGS-40 and an in-house aminocaproic acid standard.</p>
Specified by the Principal Investigator(s)
<p>Data processing: After correcting for drift (when necessary) and non-linearity in the data, isotope ratio measurements were calibrated to N2 in air using international reference materials that were included in every run.</p>
<p>Missing data identifier = -999</p>
<p>BCO-DMO Processing: modified parameter names (replaced spaces w/ underscores; replaced # with "num").</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
Elementar Vario Isotope Cube
Elementar Vario Isotope Cube
PI Supplied Instrument Name: Elementar Vario Isotope Cube PI Supplied Instrument Description:The d15N of tow-collected, size-fractionated PON was determined by elemental analyzer-isotope ratio mass spectrometry (an Elementar Vario Isotope Cube online to an Elementar Isoprime visION), referencing to atmospheric N2 using USGS-40 and an in-house aminocaproic acid standard. 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/
Elementar Isoprime visION
Elementar Isoprime visION
PI Supplied Instrument Name: Elementar Isoprime visION PI Supplied Instrument Description:The d15N of tow-collected, size-fractionated PON was determined by elemental analyzer-isotope ratio mass spectrometry (an Elementar Vario Isotope Cube online to an Elementar Isoprime visION), referencing to atmospheric N2 using USGS-40 and an in-house aminocaproic acid standard. 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/
mesh plankton net
mesh plankton net
PI Supplied Instrument Name: mesh plankton net PI Supplied Instrument Description:PON samples were collected from the upper 200 m of the water column using a 1-m2, 200-μm-mesh plankton net. Instrument Name: Plankton Net Instrument Short Name:Plankton Net Instrument Description: A Plankton Net is a generic term for a sampling net that is used to collect plankton. It is used only when detailed instrument documentation is not available. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/22/