http://lod.bco-dmo.org/id/dataset/764754
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
2019-04-11
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Sampling locations and ancillary data for bulk chemical and molecular characterization of organic carriers and their partition coefficients with radionuclide marine tracers.
2019-04-11
publication
2019-04-11
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2019-04-11
publication
https://doi.org/10.1575/1912/bco-dmo.764754.1
Peter Santschi
Texas A&M, Galveston
principalInvestigator
Antonietta Quigg
Texas A&M, Galveston
principalInvestigator
Kathleen Schwehr
Texas A&M, Galveston
principalInvestigator
Chen Xu
Texas A&M, Galveston
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: Santschi, P., Quigg, A., Schwehr, K., Xu, C. (2019) Sampling locations and ancillary data for bulk chemical and molecular characterization of organic carriers and their partition coefficients with radionuclide marine tracers. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2019-04-11 [if applicable, indicate subset used]. doi:10.1575/1912/bco-dmo.764754.1 [access date]
Sampling locations and ancillary data for bulk chemical and molecular characterization of organic carriers and their partition coefficients with radionuclide marine tracers. Dataset Description: <p>Sampling locations and ancillary data.</p> Methods and Sampling:
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1356453 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1356453
completed
Peter Santschi
Texas A&M, Galveston
4097404476
200 Seawolf Pkwy
Galveston
TX
77553
US
santschi@tamug.edu
pointOfContact
Antonietta Quigg
Texas A&M, Galveston
409-740-4990
200 Seawolf Pkwy
Galveston
TX
77553
quigga@tamug.edu
pointOfContact
Kathleen Schwehr
Texas A&M, Galveston
200 Seawolf Pkwy
Galveston
TX
77553
pointOfContact
Chen Xu
Texas A&M, Galveston
409-354-8312
200 Seawolf Pkwy
Galveston
TX
77553
xuc@tamug.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Sample_ID
Cruise
Station
Latitude
Longitude
Water_depth
Sampling_depth
Salinity
Temperature
descriptive_location
notes
theme
None, User defined
sample identification
cruise name
station
latitude
longitude
depth
salinity
water temperature at measurement depth
site description
comments
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.
Biopolymers as carrier phases for selected natural radionuclides (of Th, Pa, Pb, Po, Be) in diatoms and coccolithophores
https://osprey.bco-dmo.org/project/735996
Biopolymers as carrier phases for selected natural radionuclides (of Th, Pa, Pb, Po, Be) in diatoms and coccolithophores
<p><span style="background-color:transparent; color:rgb(0, 0, 0); font-family:arial; font-size:11pt">NSF Award Abstract:</span></p>
<p>Particle-associated natural radioisotopes are transported to the ocean floor mostly via silica and carbonate ballasted particles, allowing their use as tracers for particle transport. Th(IV), Pa (IV,V), Po(IV), Pb(II) and Be(II) radionuclides are important proxies in oceanographic investigations, used for tracing particle and colloid cycling, estimating export fluxes of particulate organic carbon, tracing air-sea exchange, paleoproductivity, and/or ocean circulation in paleoceanographic studies. Even though tracer approaches are considered routine, there are cases where data interpretation or validity has become controversial, largely due to uncertainties about inorganic proxies and organic carrier molecules. Recent studies showed that cleaned diatom frustules and pure silica particles, sorb natural radionuclides to a much lower extent (by 1-2 orders of magnitude) than whole diatom cells (with or without shells). Phytoplankton that build siliceous or calcareous shells, such as the diatoms and coccolithophores, are assembled via bio-mineralization processes using biopolymers as nanoscale templates. These templates could serve as possible carriers for radionuclides and stable metals.</p>
<p>In this project, a research team at the Texas A & M University at Galveston hypothesize that radionuclide sorption is controlled by selective biopolymers that are associated with biogenic opal (diatoms), CaCO3 (coccolithophores) and the attached exopolymeric substances (EPS), rather than to pure mineral phase. To pursue this idea, the major objectives of their research will include separation, identification and molecular-level characterization of the individual biopolymers (e.g., polysaccharides, uronic acids, proteins, hydroquinones, hydroxamate siderophores, etc.) that are responsible for binding different radionuclides (Th, Pa, Pb, Po and Be) attached to cells or in the matrix of biogenic opal or CaCO3 as well as attached EPS mixture, in laboratory grown diatom and coccolithophore cultures. Laboratory-scale radiolabeling experiments will be conducted, and different separation techniques and characterization techniques will be applied.</p>
<p>Intellectual Merit : It is expected that this study will help elucidate the molecular basis of the templated growth of diatoms and coccoliths, EPS and their role in scavenging natural radionuclides in the ocean, and help resolve debates on the oceanographic tracer applications of different natural radioisotopes (230,234Th, 231Pa, 210Po, 210Pb and 7,10Be). The proposed interdisciplinary research project will require instrumental approaches for molecular-level characterization of these radionuclides associated carrier molecules.</p>
<p>Broader Impacts: The results of this study will be relevant for understanding biologically mediated ocean scavenging of radionuclides by diatoms and coccoliths which is important for carbon cycling in the ocean, and will contribute to improved interpretation of data obtained by field studies especially through the GEOTRACES program. This new program will enhance training programs at TAMUG for postdocs, graduate and undergraduate students. Lastly, results will be integrated in college courses and out-reach activities at Texas A&M University, including NSF-REU, Sea Camp, Elder Hostel and exhibits at the local science fair and interaction with its after-school program engaging Grade 9-12 students from groups traditionally underrepresented.</p>
Biopolymers for radionuclides
largerWorkCitation
project
eng; USA
oceans
-125
-94.94
21.75
28.95
2019-04-11
0
BCO-DMO catalogue of parameters from Sampling locations and ancillary data for bulk chemical and molecular characterization of organic carriers and their partition coefficients with radionuclide marine tracers.
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/764755.rdf
Name: Sample_ID
Units: unitless
Description: <p>Sample_ID</p>
http://lod.bco-dmo.org/id/dataset-parameter/764756.rdf
Name: Cruise
Units: unitless
Description: <p>Cruise</p>
http://lod.bco-dmo.org/id/dataset-parameter/764757.rdf
Name: Station
Units: unitless
Description: <p>Station</p>
http://lod.bco-dmo.org/id/dataset-parameter/764758.rdf
Name: Latitude
Units: decimal degrees
Description: <p>Latitude in decimal dregrees. North is positive</p>
http://lod.bco-dmo.org/id/dataset-parameter/764759.rdf
Name: Longitude
Units: decimal degrees
Description: <p>Longitude in decimal degrees. East is positive</p>
http://lod.bco-dmo.org/id/dataset-parameter/764760.rdf
Name: Water_depth
Units: meters (m)
Description: <p>water depth</p>
http://lod.bco-dmo.org/id/dataset-parameter/764761.rdf
Name: Sampling_depth
Units: meters (m)
Description: <p>sample depth</p>
http://lod.bco-dmo.org/id/dataset-parameter/764762.rdf
Name: Salinity
Units: unitless
Description: <p>salinity</p>
http://lod.bco-dmo.org/id/dataset-parameter/764763.rdf
Name: Temperature
Units: degrees Celsius
Description: <p>temperature</p>
http://lod.bco-dmo.org/id/dataset-parameter/764764.rdf
Name: descriptive_location
Units: unitless
Description: <p>text description of location</p>
http://lod.bco-dmo.org/id/dataset-parameter/764765.rdf
Name: notes
Units: unitless
Description: <p>additional notes</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
1030
https://darchive.mblwhoilibrary.org/bitstream/1912/24001/1/dataset-764754_sampleinformation__v1.tsv
download
https://doi.org/10.1575/1912/bco-dmo.764754.1
download
onLine
dataset
<p>BCO-DMO Processing Notes:<br />
-&nbsp;added conventional header with dataset name, PI name, version date<br />
- modified parameter names to conform with BCO-DMO naming conventions<br />
- converted latitude and longitude values from degrees minutes to decimal degrees</p>
<p>&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