http://lod.bco-dmo.org/id/dataset/883989
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
2022-11-18
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Thorium-234 data from SalpPOOP cruise on the R/V Tangaroa to the Chatham Rise (subtropical and subantarctic waters) in October and November 2018
2022-12-16
publication
2022-12-16
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2022-12-16
publication
https://doi.org/10.26008/1912/bco-dmo.883989.1
Michael R. Stukel
Florida State University
principalInvestigator
Moira Decima
University of California-San Diego Scripps
principalInvestigator
Thomas Kelly
University of Alaska Fairbanks
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: Stukel, M., Kelly, T., Decima, M. (2022) Thorium-234 data from SalpPOOP cruise on the R/V Tangaroa to the Chatham Rise (subtropical and subantarctic waters) in October and November 2018. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2022-12-16 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.883989.1 [access date]
Methods and Sampling: <p>This dataset represents water column Thorium-234 data from the SalpPOOP, Tangaroa Cruise 1810 (aka&nbsp;SalpPOOP cruise). Salinity and density were measured using a CTD.&nbsp; 4-liter (L) samples for total water-column 234Th activity were collected using CTD bottles at approximately 12 depths from the surface to approximately 300 meters.&nbsp; Samples were acidified with nitric acid to a pH &lt; 2,&nbsp;and a Th-230 tracer spike was added.&nbsp; Samples were shaken and allowed to equilibrate for 4 to 9 hours.&nbsp; Samples were then re-basified with ammonium hydroxide to a pH of 8-9, shaken, and allowed to equilibrate for more than 8 hours.&nbsp; Samples were then vacuum filtered at high vacuum pressure through a quartz (QMA) filter.&nbsp; Filters were mounted in RISO planchets and counted on a RISO low-level beta multi-counter at Palmer Station, Antarctica.&nbsp; Following a background count &gt; 6 months later, samples were dissolved in 8M nitric acid / 10% hydrogen peroxide solution and a Th-229 tracer spike was added.&nbsp; Samples were then analyzed on an ICP-MS to quantify the Th-229:Th-230 ratio, which was used to calculate the initial precipitation and filtration yield of Th-234.&nbsp; Protocols from Pike et al. (2005) were followed.&nbsp;</p>
<p>For additional sampling details see Decima et al. (in review, Nat. Comm.).</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1756465 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1756465
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1756610 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1756610
completed
Michael R. Stukel
Florida State University
815-258-3875
Earth, Ocean, and Atmos. Science Building (EOA) Rm. 6089 1011 Academic Way
Tallahassee
FL
32306
USA
mstukel@fsu.edu
pointOfContact
Moira Decima
University of California-San Diego Scripps
858-246-4710
9500 Gilman Dr #0218
La Jolla
CA
92093-0218
USA
mdecima@ucsd.edu
pointOfContact
Thomas Kelly
University of Alaska Fairbanks
2150 Koyukuk Drive 229 O'Neill Building
Fairbanks
AK
99775
USA
tbkelly@alaska.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Cruise_ID
Collection_Datetime
ISO_DateTime_UTC
Cast_Number
Cycle
Latitude
Longitude
Depth
U238_activity
Th234_activity
Th234_measurement_uncertainty
ICP-MS (Inductively coupled plasma mass spectrometer)
RISO low-level beta multi-counter
theme
None, User defined
Cruise identfier
Date and time
ISO_DateTime_UTC
cast
experiment id
latitude
longitude
depth
U238_in_sw
thorium-234 activity
thorium-234 error
featureType
BCO-DMO Standard Parameters
CTD - fixed
Inductively Coupled Plasma Mass Spectrometer
Riso Laboratory Anti-coincidence Beta Counter
instrument
BCO-DMO Standard Instruments
TAN1810
service
Deployment Activity
Chatham Rise (Subtropical and Sub-Antarctic waters off of New Zealand)
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.
Collaborative Research: Quantifying trophic roles and food web ecology of salp blooms of the Chatham Rise
https://osprey.bco-dmo.org/project/754878
Collaborative Research: Quantifying trophic roles and food web ecology of salp blooms of the Chatham Rise
<p><em>NSF Award Abstract:</em><br />
Salps are unique open-ocean animals that range in size from a few millimeters to greater than twenty centimeters, have a gelatinous (jelly-like) body, and can form long chains of many connected individuals. These oceanic organisms act as oceanic vacuum cleaners, having incredibly high feeding rates on phytoplankton and, unusual for consumers of their size, smaller bacteria-sized prey. This rapid feeding and the salps' tendency to form dense blooms, allows them move substantial amounts of prey carbon from the surface into the deep ocean, leading to carbon dioxide removal from the atmosphere. However, salps are often considered a trophic dead-end, rather than a link, in the food web due to the assumption that they themselves are not consumed, since their gelatinous bodies are less nutritious than co-occurring crustacean prey. Along with this, salp populations are hypothesized to be increasing due to climate change. This proposal addresses these questions: 1) Do salps compete primarily with crustaceans (as in the prevailing paradigm) or are they competitors of single-celled protists, which are the dominant grazers of small phytoplankton? 2) Do salp blooms increase the efficiency of food-web pathways from tiny phytoplankton to fisheries production in nutrient-poor ocean regions?</p>
<p>This project will support the interdisciplinary education of a graduate student who will learn modeling and laboratory techniques in the fields of biological and chemical oceanography and stimulate international collaborations between scientists in the United States and New Zealand. Additionally, several Education and Outreach initiatives are planned, including development of a week-long immersive high school class in biological oceanography, and education modules that will serve the "scientists-in-the schools" program in Tallahassee, FL.</p>
<p>It is commonly assumed that salps are a trophic sink. However, this idea was developed before the discovery that protists (rather than crustaceans) are the dominant grazers in the open ocean and was biased by the difficulty of recognizing gelatinous salps in fish guts. More recent studies show that salps are found in guts of a diverse group of fish and seabirds and are a readily available prey source when crustacean abundance is low. This proposal seeks to quantify food web flows through contrasting salp-dominated and salp-absent water parcels near the Chatham Rise off western New Zealand where salp blooms are a predictable phenomenon. The proposal will leverage previously obtained data on salp abundance, bulk grazing impact, and biogeochemical significance during Lagrangian experiments conducted by New Zealand-based collaborators. The proposal will determine 1) taxon- and size-specific phytoplankton growth rate measurements, 2) taxon- and size-specific protozoan and salp grazing rate measurements, 3) compound specific isotopic analysis of the amino acids of mesozooplankton to quantify the trophic position of salps, hyperiid amphipods, and other crustaceans, 4) sediment traps to quantify zooplankton carcass sinking rates, and 5) linear inverse ecosystem modeling syntheses. Secondary production and trophic flows from this well-constrained ecosystem model will be compared to crustacean-dominated and microbial loop-dominated ecosystems in similarly characterized regions (California Current, Costa Rica Dome, and Gulf of Mexico).</p>
<p>This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.</p>
Salp Food Web Ecology
largerWorkCitation
project
eng; USA
oceans
Chatham Rise (Subtropical and Sub-Antarctic waters off of New Zealand)
179.851
-179.849167
-45.5503
-42.7082
2018-10-24
2018-11-17
East of New Zealand, Chatham Rise area
0
BCO-DMO catalogue of parameters from Thorium-234 data from SalpPOOP cruise on the R/V Tangaroa to the Chatham Rise (subtropical and subantarctic waters) in October and November 2018
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/884252.rdf
Name: Cruise_ID
Units: unitless
Description: <p>Cruise Identification</p>
http://lod.bco-dmo.org/id/dataset-parameter/884253.rdf
Name: Collection_Datetime
Units: unitless
Description: <p>Local date of collection (New Zealand ST) in format: YYYY-MM-DDThh:mmZ</p>
http://lod.bco-dmo.org/id/dataset-parameter/884254.rdf
Name: ISO_DateTime_UTC
Units: unitless
Description: <p>Date of collection in ISO 8601 format</p>
http://lod.bco-dmo.org/id/dataset-parameter/884255.rdf
Name: Cast_Number
Units: unitless
Description: <p>Cast number on the cruise</p>
http://lod.bco-dmo.org/id/dataset-parameter/884256.rdf
Name: Cycle
Units: unitless
Description: <p>Lagrangian experiment number</p>
http://lod.bco-dmo.org/id/dataset-parameter/884257.rdf
Name: Latitude
Units: decimal degrees
Description: <p>Latitude of sample collection North</p>
http://lod.bco-dmo.org/id/dataset-parameter/884258.rdf
Name: Longitude
Units: decimal degrees
Description: <p>Longitude of sample collection East (West is negative)</p>
http://lod.bco-dmo.org/id/dataset-parameter/884259.rdf
Name: Depth
Units: meters
Description: <p>Depth of sample collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/884260.rdf
Name: U238_activity
Units: decays per minute per liter
Description: <p>Activity of Uranium-238</p>
http://lod.bco-dmo.org/id/dataset-parameter/884261.rdf
Name: Th234_activity
Units: decays per minute per liter
Description: <p>Activity of Thorium-234</p>
http://lod.bco-dmo.org/id/dataset-parameter/884262.rdf
Name: Th234_measurement_uncertainty
Units: decays per minute per liter
Description: <p>Uncertainty in Th234 activity</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
11710
https://darchive.mblwhoilibrary.org/bitstream/1912/29567/1/dataset-883989_thorium-234-salppoop-cruise__v1.tsv
download
https://doi.org/10.26008/1912/bco-dmo.883989.1
download
onLine
dataset
<p>This dataset represents water column Thorium-234 data from the SalpPOOP, Tangaroa Cruise 1810 (aka&nbsp;SalpPOOP cruise). Salinity and density were measured using a CTD.&nbsp; 4-liter (L) samples for total water-column 234Th activity were collected using CTD bottles at approximately 12 depths from the surface to approximately 300 meters.&nbsp; Samples were acidified with nitric acid to a pH &lt; 2,&nbsp;and a Th-230 tracer spike was added.&nbsp; Samples were shaken and allowed to equilibrate for 4 to 9 hours.&nbsp; Samples were then re-basified with ammonium hydroxide to a pH of 8-9, shaken, and allowed to equilibrate for more than 8 hours.&nbsp; Samples were then vacuum filtered at high vacuum pressure through a quartz (QMA) filter.&nbsp; Filters were mounted in RISO planchets and counted on a RISO low-level beta multi-counter at Palmer Station, Antarctica.&nbsp; Following a background count &gt; 6 months later, samples were dissolved in 8M nitric acid / 10% hydrogen peroxide solution and a Th-229 tracer spike was added.&nbsp; Samples were then analyzed on an ICP-MS to quantify the Th-229:Th-230 ratio, which was used to calculate the initial precipitation and filtration yield of Th-234.&nbsp; Protocols from Pike et al. (2005) were followed.&nbsp;</p>
<p>For additional sampling details see Decima et al. (in review, Nat. Comm.).</p>
Specified by the Principal Investigator(s)
<p><strong>BCO-DMO Processing description:</strong><br />
- Converted collection date column and added column for ISO date format (YYYY-MM-DDThh:mmZ)<br />
- Adjusted field/parameter names to comply with BCO-DMO naming conventions<br />
- Added a conventional header with dataset name, PI names, version date<br />
- Added a column for Cruise ID<br />
- Added columns for “Latitude” and “Longitude”<br />
- Rounded columns: “Latitude”, “Longitude”, “Depth”, “U238_activitiy”, “Th234_activity”, and “Th234_measurement_uncertainty” to 3 decimal places (or to the thousandth place)<br />
&nbsp;</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
PI Supplied Instrument Name: Instrument Name: CTD - fixed Instrument Short Name: Instrument Description: A reusable instrument that always simultaneously measures conductivity and temperature (for salinity) and pressure (for depth).
This term applies to CTDs that are fixed and do not measure by profiling through the water column. For profiling CTDs, see https://www.bco-dmo.org/instrument/417.
ICP-MS (Inductively coupled plasma mass spectrometer)
ICP-MS (Inductively coupled plasma mass spectrometer)
PI Supplied Instrument Name: ICP-MS (Inductively coupled plasma mass spectrometer) 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/
RISO low-level beta multi-counter
RISO low-level beta multi-counter
PI Supplied Instrument Name: RISO low-level beta multi-counter Instrument Name: Riso Laboratory Anti-coincidence Beta Counter Instrument Short Name:Riso Beta Counter Instrument Description: Low-level beta detectors manufactured by Riso (now Nutech) in Denmark. These instruments accept samples that can be mounted on a 25mm filter holder. These detectors have very low backgrounds, 0.17 counts per minute, and can have counting efficiencies as high as 55%.
Typically used in laboratory analyses. Designed to measure low levels of beta particle emission. The systems work on the principle of anticoincidence.
Cruise: TAN1810
TAN1810
Community Standard Description
International Council for the Exploration of the Sea
R/V Tangaroa
vessel
TAN1810
Moira Decima
New Zealand National Institute of Water and Atmospheric Research
Community Standard Description
International Council for the Exploration of the Sea
R/V Tangaroa
vessel