http://lod.bco-dmo.org/id/dataset/919606
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
2024-02-01
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Globorotaloides hexagonus trace element ablation profiles from samples collected from MOCNESS tows from R/V Sikuliaq cruise SKQ201701S in 2017
2024-02-01
publication
2024-02-01
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2024-02-02
publication
https://doi.org/10.26008/1912/bco-dmo.919606.1
Catherine V. Davis
North Carolina State University
principalInvestigator
Shannon C. Doherty
North Carolina State University
principalInvestigator
Jennifer Fehrenbacher
Oregon State University
principalInvestigator
Karen Wishner
University of Rhode Island
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: Davis, C., Doherty, S., Fehrenbacher, J., Wishner, K. (2024) Globorotaloides hexagonus trace element ablation profiles from samples collected from MOCNESS tows from R/V Sikuliaq cruise SKQ201701S in 2017. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2024-02-01 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.919606.1 [access date]
Methods and Sampling: <p>Detailed methodology for MOCNESS tows can be found in Wishner et al. (2018). Briefly,&nbsp; a 1 m<sup>2</sup>&nbsp;MOCNESS fitted with 222 micron nets was used to collect vertically stratified environmental data and plankton samples (9 nets per tow, 0-1000 m, 25-100 m intervals).&nbsp; Some tows also targeted oxygen minimum zone features. Nets were rinsed with filtered seawater and whole samples were preserved in 4% sodium-borate buffered formaldehyde.&nbsp;</p>
<p>Detailed methodology for sample preparation and analysis can be found in Davis et al. (2023). Foraminifera with intact cytoplasm were isolated from tow material to ensure samples were living at the time of collection. Shells of <em>G. hexagonus</em>&nbsp;were subjected to oxidative cleaning: shells were bathed individually in a 1:1 mixture of NaOH and H<sub>2</sub>O<sub>2</sub> for 10 minutes, then rinsed in deionized water. Shells were then mounted on carbon conductive tape on a glass slide. Trace element analysis was completed at the College of Earth, Ocean, and Atmospheric Sciences at Oregon State University using a laser ablation system (Photon Machines 193 nm ArF laser with an ANU HelEx dual-volume laser ablation cell, 65 mm spot size, a 4 Hz rep rate, and a fluence of 0.85 J cm<sup>-2</sup>) coupled to an iCAP quadrupole ICP-MS. Standards&nbsp;NIST 610 and NIST 612 were ablated every 10 samples.&nbsp;</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1851589 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1851589
completed
Catherine V. Davis
North Carolina State University
267-438-2198
701 Sumter St.
Columbia
SC
29208
USA
cdavis24@ncsu.edu
pointOfContact
Shannon C. Doherty
North Carolina State University
907-474-5713
2150 Koyukuk Drive 209B O'Neill
Fairbanks
AK
99775
USA
scdoherty@alaska.edu
pointOfContact
Jennifer Fehrenbacher
Oregon State University
jennifer.fehrenbacher@oregonstate.edu
pointOfContact
Karen Wishner
University of Rhode Island
401-874-6402
215 South Ferry Road
Narragansett
RI
02882
USA
kwishner@uri.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
filename
MOCNESS_cast
net
foram
file
time
X24Mg_43Ca
X25Mg_43Ca
X55Mn_43Ca
X66Zn_43Ca
X88Sr_43Ca
X138Ba_43Ca
depth
date_time_UTC
Lat_in
Lat_out
theme
None, User defined
file_name
cast
net
sample identification
sample description
time_elapsed
No BCO-DMO term
latitude
longitude
featureType
BCO-DMO Standard Parameters
Inductively Coupled Plasma Mass Spectrometer
instrument
BCO-DMO Standard Instruments
SKQ201701S
service
Deployment Activity
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.
Glacial-Interglacial Changes in Oxygen Minimum Zones Using Deep-Dwelling, Low-Oxygen Planktic Foraminifera
https://osprey.bco-dmo.org/project/914014
Glacial-Interglacial Changes in Oxygen Minimum Zones Using Deep-Dwelling, Low-Oxygen Planktic Foraminifera
<p>NSF abstract: </p>
<p>Oxygen minimum zones (OMZs) are naturally occurring regions of low oxygen found across large swaths of the ocean at depths of 100 to 1000 meters below the surface. OMZs play an important role in biogeochemical cycling and ecosystem function and any change in the expanse of their low oxygen waters can have far reaching implications for marine life and valuable fisheries resources. Marine oxygenation is variable on multiple timescales in response to global climate change, with recent observations showing that OMZs have expanded over the past half century. This project will explore promising new geochemical and morphologic proxies applicable to low-oxygen environments in the planktic foraminifer Globorotaloides hexagonus, a unicellular calcifying organism whose fossil record in seafloor sediments is well suited to reconstructing past low-oxygen environments in the water column. The project will focus on the extensive OMZ of the eastern tropical Pacific. The first goal is to evaluate and calibrate the targeted measurements for modern G. hexagonus collected live in plankton tows. The second goal is to apply these proxies to fossil specimens in sediment cores to generate records of glacial-Holocene change. The outcomes will be useable proxies for generating records of the OMZ environment, and a better understanding of how a major regional OMZ changed during the most recent period of rapid climate change. Both outcomes represent important progress towards understanding natural oscillations in the OMZ as well as modeling and planning for a changing OMZ in the face of global climate perturbations. The project will provide opportunities for undergraduate researchers as well as support a female early career researcher. </p>
<p>The marine sedimentary record is the most promising archive from which to reconstruct long term marine oxygenation. However, significant limitations exist in the available proxies for low oxygen marine environments. This project aims to address this need by evaluating and applying a range of promising geochemical (trace element and stable isotope) and morphologic (area-density and porosity) proxies relevant to low oxygen environments in the planktic foraminifer Globorotaloides hexagonus. The project will develop viable proxies based on the morphology and geochemistry of G. hexagonus shells previously collected in depth-distributed MOCNESS (Multiple Opening/Closing Net and Environmental Sensing System) tows from the eastern Pacific. The results from this proxy development in modern shells will then be ground-truthed and applied to two already well characterized sediment cores from the Mexican Margin and Panama Basin that span from the Last Glacial Maximum through the Holocene. The sediment records will be used to reconstruct past conditions in the eastern tropical Pacific OMZ, where significant questions about glacial-interglacial oxygenation persist. This research will lead to a more mechanistic understanding of how OMZs respond to climate more broadly.</p>
OMZ forams
largerWorkCitation
project
eng; USA
oceans
-117.8
-117.21
21.38
21.86
2017-01-09
2017-02-15
eastern Pacific
0
BCO-DMO catalogue of parameters from Globorotaloides hexagonus trace element ablation profiles from samples collected from MOCNESS tows from R/V Sikuliaq cruise SKQ201701S in 2017
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/919635.rdf
Name: filename
Units: unitless
Description: <p>ID for each ablation in format MOCNESScast_net_foram_ablation from metadata</p>
http://lod.bco-dmo.org/id/dataset-parameter/919636.rdf
Name: MOCNESS_cast
Units: unitless
Description: <p>MOCNESS cast number from SKQ201701S</p>
http://lod.bco-dmo.org/id/dataset-parameter/919637.rdf
Name: net
Units: unitless
Description: <p>Net number for MOCNESS cast</p>
http://lod.bco-dmo.org/id/dataset-parameter/919638.rdf
Name: foram
Units: unitless
Description: <p>Number ID of individial foram for each net</p>
http://lod.bco-dmo.org/id/dataset-parameter/919639.rdf
Name: file
Units: unitless
Description: <p>file id</p>
http://lod.bco-dmo.org/id/dataset-parameter/919640.rdf
Name: time
Units: seconds
Description: <p>Time since start of ablation</p>
http://lod.bco-dmo.org/id/dataset-parameter/919641.rdf
Name: X24Mg_43Ca
Units: mol per mol
Description: <p>24Mg to 43Ca ratio (mol per mol)</p>
http://lod.bco-dmo.org/id/dataset-parameter/919642.rdf
Name: X25Mg_43Ca
Units: mol per mol
Description: <p>25Mg to 43Ca ratio (mol per mol)</p>
http://lod.bco-dmo.org/id/dataset-parameter/919643.rdf
Name: X55Mn_43Ca
Units: mol per mol
Description: <p>55Mn to 43Ca ratio (mol per mol)</p>
http://lod.bco-dmo.org/id/dataset-parameter/919644.rdf
Name: X66Zn_43Ca
Units: mol per mol
Description: <p>66Zn to 43Ca ratio (mol per mol)</p>
http://lod.bco-dmo.org/id/dataset-parameter/919645.rdf
Name: X88Sr_43Ca
Units: mol per mol
Description: <p>88Sr to 43Ca ratio (mol per mol)</p>
http://lod.bco-dmo.org/id/dataset-parameter/919646.rdf
Name: X138Ba_43Ca
Units: mol per mol
Description: <p>138Ba to 43Ca ratio (mol per mol)</p>
http://lod.bco-dmo.org/id/dataset-parameter/919647.rdf
Name: depth
Units: micron
Description: <p>Depth in test</p>
http://lod.bco-dmo.org/id/dataset-parameter/919648.rdf
Name: date_time_UTC
Units: unitless
Description: <p>Collection date and UTC time in format yyyy-mm-ddThh:mm</p>
http://lod.bco-dmo.org/id/dataset-parameter/919649.rdf
Name: Lat_in
Units: decimal degrees
Description: <p>Latitude at time of MOCNESS recovery</p>
http://lod.bco-dmo.org/id/dataset-parameter/919650.rdf
Name: Lat_out
Units: decimal degrees
Description: <p>Latitude at time of MOCNESS deployment</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
7537137
https://darchive.mblwhoilibrary.org/server/api/core/bitstreams/4aca3712-9dee-4373-9057-2913d439af45/content
download
https://doi.org/10.26008/1912/bco-dmo.919606.1
download
onLine
dataset
<p>Detailed methodology for MOCNESS tows can be found in Wishner et al. (2018). Briefly,&nbsp; a 1 m<sup>2</sup>&nbsp;MOCNESS fitted with 222 micron nets was used to collect vertically stratified environmental data and plankton samples (9 nets per tow, 0-1000 m, 25-100 m intervals).&nbsp; Some tows also targeted oxygen minimum zone features. Nets were rinsed with filtered seawater and whole samples were preserved in 4% sodium-borate buffered formaldehyde.&nbsp;</p>
<p>Detailed methodology for sample preparation and analysis can be found in Davis et al. (2023). Foraminifera with intact cytoplasm were isolated from tow material to ensure samples were living at the time of collection. Shells of <em>G. hexagonus</em>&nbsp;were subjected to oxidative cleaning: shells were bathed individually in a 1:1 mixture of NaOH and H<sub>2</sub>O<sub>2</sub> for 10 minutes, then rinsed in deionized water. Shells were then mounted on carbon conductive tape on a glass slide. Trace element analysis was completed at the College of Earth, Ocean, and Atmospheric Sciences at Oregon State University using a laser ablation system (Photon Machines 193 nm ArF laser with an ANU HelEx dual-volume laser ablation cell, 65 mm spot size, a 4 Hz rep rate, and a fluence of 0.85 J cm<sup>-2</sup>) coupled to an iCAP quadrupole ICP-MS. Standards&nbsp;NIST 610 and NIST 612 were ablated every 10 samples.&nbsp;</p>
Specified by the Principal Investigator(s)
<p>Ablation data were processed using LATools software (Branson et al. 2019).</p>
Specified by the Principal Investigator(s)
* Table "all_ablations.csv" was imported into the BCO-DMO data system with values "NA" as missing data values.
** Missing data values are displayed differently based on the file format you download. They are blank in csv files, "NaN" in MatLab files, etc.
* Column names adjusted to conform to BCO-DMO naming conventions designed to support broad re-use by a variety of research tools and scripting languages. [Only numbers, letters, and underscores. Can not start with a number]
* decimal places rounded from 18 to 8 places.
* Columns added from dataset supplemental metadata table.
* Columns added from supplemental table: date_time_UTC, Lat_In, Lat_Out
* Columns added to this dataset by joining column "MOCNESS_cast" and string "tow" "net" and "foram" with supplemental metadata table "MOCNESS_cast" "net" and "foram".
Specified by BCO-DMO Data Managers
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
PI Supplied Instrument Name: PI Supplied Instrument Description:Photon Machines 193 nm ArF laser with an ANU HelEx dual-volume laser ablation cell
iCAP quadrupole ICP-MS Instrument Name: Inductively Coupled Plasma Mass Spectrometer Instrument Short Name:ICP Mass Spec Instrument Description: An ICP Mass Spec is an instrument that passes nebulized samples into an inductively-coupled gas plasma (8-10000 K) where they are atomized and ionized. Ions of specific mass-to-charge ratios are quantified in a quadrupole mass spectrometer. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB15/
Cruise: SKQ201701S
SKQ201701S
R/V Sikuliaq
Community Standard Description
International Council for the Exploration of the Sea
R/V Sikuliaq
vessel
SKQ201701S
Brad Seibel
University of Hawai'i
R/V Sikuliaq
Community Standard Description
International Council for the Exploration of the Sea
R/V Sikuliaq
vessel