http://lod.bco-dmo.org/id/dataset/929305
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
2024-06-04
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Dissolved Macronutrient Concentrations from Depth Profiles and Incubation Experiments from STING I Cruise AE2305 on R/V Atlantic Explorer in the Gulf of Mexico from February to March 2023
2024-02-06
publication
2024-02-06
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2025-02-10
publication
https://doi.org/10.26008/1912/bco-dmo.929305.2
Kristen Nicolle Buck
Oregon State University
principalInvestigator
Rene Maurice Boiteau
Oregon State University
principalInvestigator
Phoebe Dreux Chappell
Old Dominion University
principalInvestigator
Timothy M. Conway
University of South Florida
principalInvestigator
Angela N. Knapp
Florida State University
principalInvestigator
Chris Smith
United States Geological Survey
principalInvestigator
Joseph Tamborski
Old Dominion University
principalInvestigator
Salvatore Caprara
University of South Florida
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: Buck, K. N., Parente, C. E., Caprara, S., Boiteau, R. M., Chappell, P. D., Conway, T. M., Knapp, A. N., Smith, C., Tamborski, J. (2024) Dissolved Macronutrient Concentrations from Depth Profiles and Incubation Experiments from STING I Cruise AE2305 on R/V Atlantic Explorer in the Gulf of Mexico from February to March 2023. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2024-06-25 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.929305.1 [access date]
Methods and Sampling: <p>Water column samples were collected in February and March 2023 aboard the R/V Atlantic Explorer using a trace metal clean rosette (SeaBird) outfitted with 12-L Niskin-X samplers (Ocean Test Equipment), a trace metal clean pump, or a custom surface pump “towfish” system (Mellett and Buck, 2020). Seawater samples for macronutrient analysis were filtered through 0.2 µm Pall Acropak Super membrane filter capsules, collected in acid-cleaned and triple-rinsed 15-mL Falcon tubes, and stored in ziplock bags in the fridge until analyzed shipboard following recommended practices (Becker et al., 2020), typically within 24 hours of collection.&nbsp;</p>
<p>Samples were analyzed shipboard for phosphate, nitrate+nitrite, silicate, and nitrite on a QuAAtro39 AutoAnalyzer (SEAL Analytical) according to standard colorimetric methods (Strickland and Parsons, 1972).&nbsp;All reagents were prepared in dedicated labware with high purity Milli-Q (&gt;18 MΩ cm) water. Working standards were prepared fresh daily in an artificial seawater (ASW; 35 g/L sodium chloride, 0.5 g/L sodium bicarbonate) matrix using calibrated volumetric pipettes.&nbsp;</p>
<p>Nine-point standard curves were analyzed at the beginning of each run with multiple reagent blanks. Quality control checks were analyzed every twelfth sample with ASW blanks and standards. The highest standard from the calibration curve was analyzed approximately every twenty samples to check for drift during the runs. Subsamples of reference material for nutrients in seawater (Konso) were measured in each run (see Table 1 below).&nbsp;</p>
<p>Detection limits for each parameter were determined from three times the standard deviation of replicate lowest standards. Limits of detection were 0.035 µM for phosphate, 0.048 µM for nitrate+nitrite, 0.051 µM for silicate, and 0.012 µM for nitrite. Values below detection are reported as 0 µM with accompanying QC Flag 6.&nbsp;</p>
<p>&nbsp;</p>
<p>&nbsp;</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-2326719 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=2326719
onGoing
Kristen Nicolle Buck
Oregon State University
541-737-7401
2651 SW Orchard Avenue CEOAS
Corvallis
OR
97331
USA
kristen.buck@oregonstate.edu
pointOfContact
Rene Maurice Boiteau
Oregon State University
612-625-6983
228 Smith Hall 207 Pleasant Street Se
Minneapolis
MN
55455
USA
rboiteau@umn.edu
pointOfContact
Phoebe Dreux Chappell
Old Dominion University
USF St. Petersburg campus 140 7th Ave. South
St. Petersburg
FL
33701
USA
dreux@usf.edu
pointOfContact
Timothy M. Conway
University of South Florida
727-258-1081
College of Marine Sciences 830 1st St SE
St. Petersburg
FL
33701
USA
tmconway@usf.edu
pointOfContact
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
Chris Smith
United States Geological Survey
727-510-9884
600 4th St. S.
St. Petersburg
FL
33701
USA
cgsmith@usgs.gov
pointOfContact
Joseph Tamborski
Old Dominion University
631-790-1579
339 Oceanography & Physics Bldg
Norfolk
VA
23529
USA
jtambors@odu.edu
pointOfContact
Salvatore Caprara
University of South Florida
capraras@oregonstate.edu
pointOfContact
asNeeded
Dataset Version: 3
Unknown
EVTNBR
ISO_DateTime_UTC
DATE_UTC
TIME_UTC
DATE_GMT
TIME_GMT
LATITUDE
LONGITUDE
PLATFORM
CASTNBR
STNNBR
BTLNBR
DEPTH
PO4
PO4_STDEV
PO4_COUNT
PO4_FLAG
PO4_percentRSD
NO3_NO2
NO3_NO2_STDEV
NO3_NO2_COUNT
NO3_NO2_FLAG
NO3_NO2_percentRSD
SiO4
SiO4_STDEV
SiO4_COUNT
SiO4_FLAG
SiO4_percentRSD
NO2
NO2_STDEV
NO2_COUNT
NO2_FLAG
NO2_percentRSD
STING_ID
Towfish
12-L X-Niskin bottles (Ocean Test Equipment)
QuAAtro39 AutoAnalyzer (SEAL Analytical)
TM Pump
theme
None, User defined
event
ISO_DateTime_UTC
date
time of day
latitude
longitude
platform
cast
station
bottle number
depth
reactive phosphorus (PO4)
quality flag
nitrate plus nitrite
Silicate (reactive silica)
Nitrite
sample identification
featureType
BCO-DMO Standard Parameters
Discrete water sampler
Niskin bottle
Nutrient Autoanalyzer
Pump
instrument
BCO-DMO Standard Instruments
AE2305
service
Deployment Activity
Gulf of Mexico near Florida
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: Linking iron and nitrogen sources in an oligotrophic coastal margin: Nitrogen fixation and the role of boundary fluxes
https://osprey.bco-dmo.org/project/880516
Collaborative Research: Linking iron and nitrogen sources in an oligotrophic coastal margin: Nitrogen fixation and the role of boundary fluxes
<p><strong>NSF Award Abstract:</strong><br />
This project will investigate how groundwater discharge delivers important nutrients to the coastal ecosystems of the West Florida Shelf. Preliminary studies indicate that groundwater may supply both dissolved organic nitrogen (DON) and iron in this region. In coastal ecosystems like the West Florida Shelf that have very low nitrate and ammonium concentrations, DON is the main form of nitrogen available to organisms. Nitrogen cycling is strongly affected by iron availability because iron is essential for both photosynthesis and for nitrogen fixation. This study will investigate the sources and composition of DON and iron, and their influence on the coastal ecosystem. The team will sample offshore groundwater wells, river and estuarine waters, and conduct two expeditions across the West Florida Shelf in winter and summer. Investigators will participate in K-12 and outreach activities to increase awareness of the project and related science. The project will fund the work of six graduate and eight undergraduate students across five institutions, furthering NSF’s goals of education and training.</p>
<p>Motivated by preliminary observations of unexplained, tightly-correlated DON and dissolved iron concentrations across the West Florida Shelf (WFS), the proposed work will quantify the flux and isotopic signatures of submarine groundwater discharge (SGD)-derived DON and iron to the WFS, and evaluate the bioavailability of this temporally-variable source using four seasonal near-shore campaigns sampling offshore groundwater wells, estuarine, and riverine endmembers and two cross-shelf cruises. The work will evaluate whether SGD stimulates nitrogen fixation on the WFS, and the potential for the stimulated nitrogen fixation to further modify the chemistry of DON and dissolved iron in the region. The cross-shelf cruises will investigate hypothesized periods of maximum SGD and Trichodesmium abundance (June), and reduced river discharge and SGD (February), thus comparing two distinct biogeochemical regimes. The concentrations and isotopic compositions of DON and dissolved iron, molecular composition of DON, and the concentration and composition of iron-binding ligands will be characterized. Nitrogen fixation rates and Trichodesmium spp. abundance and expression of iron stress genes will be measured. Fluxes of DON and iron from SGD and rivers will be quantified with radium isotope mass balances. The impacts of SGD on nitrogen fixation and DON/ligand production will be constrained with incubations of natural phytoplankton communities with submarine groundwater amendments. Two hypotheses will be tested: 1) SGD is the dominant source of bioavailable DON and dissolved iron on the WFS, and 2) SGD-alleviation of iron stress changes the dominant Trichodesmium species on the WFS, increases nitrogen fixation rates and modifies DON and iron composition. Overall, the work will establish connections between marine nitrogen and iron cycling and evaluate the potential for coastal inputs to modify water along the WFS before export to the Atlantic Ocean. This study will thus provide a framework to consider these boundary fluxes in oligotrophic coastal systems and the relative importance of rivers and SGD as sources of nitrogen and iron in other analogous locations, such as coastal systems in Australia, India, and Africa, where nitrogen fixation and SGD have also been documented.</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>
West Florida Shelf DON and Fe
largerWorkCitation
project
eng; USA
oceans
Gulf of Mexico near Florida
-86.6
-82.5
26.3
28.5
2023-02-20
2023-03-05
Gulf of Mexico/America, West Florida Shelf
0
BCO-DMO catalogue of parameters from Dissolved Macronutrient Concentrations from Depth Profiles and Incubation Experiments from STING I Cruise AE2305 on R/V Atlantic Explorer in the Gulf of Mexico from February to March 2023
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/950748.rdf
Name: EVTNBR
Units: unitless
Description: <p>Event number; ‘nda’ for ‘no data available’ or missing information; ‘na’ for ‘not applicable’ to that sample.</p>
http://lod.bco-dmo.org/id/dataset-parameter/950749.rdf
Name: ISO_DateTime_UTC
Units: unitless
Description: <p>UTC datetime when sample was collected.</p>
http://lod.bco-dmo.org/id/dataset-parameter/950750.rdf
Name: DATE_UTC
Units: unitless
Description: <p>UTC date when sample was collected.</p>
http://lod.bco-dmo.org/id/dataset-parameter/950751.rdf
Name: TIME_UTC
Units: unitless
Description: <p>UTC time when sample was collected; ‘nda’ for ‘no data available’ or missing information; ‘na’ for ‘not applicable’ to that sample.</p>
http://lod.bco-dmo.org/id/dataset-parameter/950752.rdf
Name: DATE_GMT
Units: unitless
Description: <p>GMT date when sample was collected.</p>
http://lod.bco-dmo.org/id/dataset-parameter/950753.rdf
Name: TIME_GMT
Units: unitless
Description: <p>GMT time when sample was collected; ‘nda’ for ‘no data available’ or missing information; ‘na’ for ‘not applicable’ to that sample.</p>
http://lod.bco-dmo.org/id/dataset-parameter/950754.rdf
Name: LATITUDE
Units: decimal degrees
Description: <p>Position when sample was collected in decimal degrees; a positive value indicates a Northern coordinate.‘nda’ for ‘no data available’ or missing information; ‘na’ for ‘not applicable’ to that sample.</p>
http://lod.bco-dmo.org/id/dataset-parameter/950755.rdf
Name: LONGITUDE
Units: decimal degrees
Description: <p>Position when sample was collected in decimal degrees; a negative value indicates an Eastern coordinate.‘nda’ for ‘no data available’ or missing information; ‘na’ for ‘not applicable’ to that sample.</p>
http://lod.bco-dmo.org/id/dataset-parameter/950756.rdf
Name: PLATFORM
Units: unitless
Description: <p>Sampling system used. TMC CTD = trace metal CTD rosette; FISH = tow fish; TM PUMP = trace metal pump; INC = incubation.</p>
http://lod.bco-dmo.org/id/dataset-parameter/950757.rdf
Name: CASTNBR
Units: unitless
Description: <p>Cast number; ‘na’ for ‘not applicable’ to that sample.</p>
http://lod.bco-dmo.org/id/dataset-parameter/950758.rdf
Name: STNNBR
Units: unitless
Description: <p>Station number; ‘na’ for ‘not applicable’ to that sample.</p>
http://lod.bco-dmo.org/id/dataset-parameter/950759.rdf
Name: BTLNBR
Units: unitless
Description: <p>CTD rosette bottle number; ‘na’ for ‘not applicable’ to that sample.</p>
http://lod.bco-dmo.org/id/dataset-parameter/950760.rdf
Name: DEPTH
Units: meters (m)
Description: <p>Sample collection depth below sea surface; ‘no data available’ or missing information; ‘na’ for ‘not applicable’ to that sample.</p>
http://lod.bco-dmo.org/id/dataset-parameter/950761.rdf
Name: PO4
Units: micromoles per liter (uM)
Description: <p>Concentrations of dissolved phosphate.</p>
http://lod.bco-dmo.org/id/dataset-parameter/950762.rdf
Name: PO4_STDEV
Units: micromoles per liter (uM)
Description: <p>Standard deviation of replicate phosphate concentration measurements. If only 2 replicates, the difference about the mean was used to calculate error.</p>
http://lod.bco-dmo.org/id/dataset-parameter/950763.rdf
Name: PO4_COUNT
Units: replicate
Description: <p>Number of PO4 analytical replicaters performed.</p>
http://lod.bco-dmo.org/id/dataset-parameter/950764.rdf
Name: PO4_FLAG
Units: unitless
Description: <p>Quality flag for PO4 measurements. See the "Data Processing Description" section of the BCO-DMO metadata page for this dataset for full data quality flag details.</p>
http://lod.bco-dmo.org/id/dataset-parameter/950765.rdf
Name: PO4_percentRSD
Units: unitless
Description: <p>Percent relative standard deviation of replicate phosphate concentration measurements. Calculated as PO4_STDEV divided by PO4 and multiplied by 100; ‘na’ for ‘not applicable’, used when value of 0 assigned to concentrations <LOD.</p>
http://lod.bco-dmo.org/id/dataset-parameter/950766.rdf
Name: NO3_NO2
Units: micromoles per liter (uM)
Description: <p>Concentrations of dissolved nitrate+nitrite.</p>
http://lod.bco-dmo.org/id/dataset-parameter/950767.rdf
Name: NO3_NO2_STDEV
Units: micromoles per liter (uM)
Description: <p>Standard deviation of replicate nitrate+nitrite concentration measurements. If only 2 replicates, the difference about the mean was used to calculate error.</p>
http://lod.bco-dmo.org/id/dataset-parameter/950768.rdf
Name: NO3_NO2_COUNT
Units: replicate
Description: <p>Number of nitrate+nitrite analytical replicaters performed.</p>
http://lod.bco-dmo.org/id/dataset-parameter/950769.rdf
Name: NO3_NO2_FLAG
Units: unitless
Description: <p>Quality flag for NO3_NO2. See the "Data Processing Description" section of the BCO-DMO metadata page for this dataset for full data quality flag details.</p>
http://lod.bco-dmo.org/id/dataset-parameter/950770.rdf
Name: NO3_NO2_percentRSD
Units: unitless
Description: <p>Percent relative standard deviation of replicate nitrate+nitrite concentration measurements. Calculated as NO3_NO2_STDEV divided by NO3_NO2 and multiplied by 100; ‘na’ for ‘not applicable’, used when value of 0 assigned to concentrations <LOD.</p>
http://lod.bco-dmo.org/id/dataset-parameter/950771.rdf
Name: SiO4
Units: micromoles per liter (uM)
Description: <p>Concentrations of dissolved silicate.</p>
http://lod.bco-dmo.org/id/dataset-parameter/950772.rdf
Name: SiO4_STDEV
Units: micromoles per liter (uM)
Description: <p>Standard deviation of replicate silicate concentration measurements. If only 2 replicates, the difference about the mean was used to calculate error.</p>
http://lod.bco-dmo.org/id/dataset-parameter/950773.rdf
Name: SiO4_COUNT
Units: replicate
Description: <p>Number of SiO4 analytical replicaters performed.</p>
http://lod.bco-dmo.org/id/dataset-parameter/950774.rdf
Name: SiO4_FLAG
Units: unitless
Description: <p>Quality flag for SiO4. See the "Data Processing Description" section of the BCO-DMO metadata page for this dataset for full data quality flag details.</p>
http://lod.bco-dmo.org/id/dataset-parameter/950775.rdf
Name: SiO4_percentRSD
Units: unitless
Description: <p>Percent relative standard deviation of replicate silicate concentration measurements. Calculated as SiO4_STDEV divided by SiO4 and multiplied by 100.</p>
http://lod.bco-dmo.org/id/dataset-parameter/950776.rdf
Name: NO2
Units: micromoles per liter (uM)
Description: <p>Concentrations of dissolved nitrite.</p>
http://lod.bco-dmo.org/id/dataset-parameter/950777.rdf
Name: NO2_STDEV
Units: micromoles per liter (uM)
Description: <p>Standard deviation of replicate nitrate+nitrite concentration measurements. If only 2 replicates, the difference about the mean was used to calculate error.</p>
http://lod.bco-dmo.org/id/dataset-parameter/950778.rdf
Name: NO2_COUNT
Units: replicate
Description: <p>Number of NO2 analytical replicaters performed.</p>
http://lod.bco-dmo.org/id/dataset-parameter/950779.rdf
Name: NO2_FLAG
Units: unitless
Description: <p>Quality flag for NO2. See the "Data Processing Description" section of the BCO-DMO metadata page for this dataset for full data quality flag details.</p>
http://lod.bco-dmo.org/id/dataset-parameter/950780.rdf
Name: NO2_percentRSD
Units: unitless
Description: <p>Percent relative standard deviation of replicate nitrite concentration measurements. Calculated as NO2_STDEV divided by NO2 and multiplied by 100; ‘na’ for ‘not applicable’, used when value of 0 assigned to concentrations <LOD.</p>
http://lod.bco-dmo.org/id/dataset-parameter/950781.rdf
Name: STING_ID
Units: unitless
Description: <p>Unique number assigned to each sampling event in STING project.</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
43923
https://darchive.mblwhoilibrary.org/server/api/core/bitstreams/2edb34d6-2f75-4cfc-a99c-b37b8d408ccc/content
download
43587
https://darchive.mblwhoilibrary.org/server/api/core/bitstreams/66feed55-3d54-40ba-9ab4-0705adb9d82a/content
download
https://doi.org/10.26008/1912/bco-dmo.929305.2
download
onLine
dataset
<p>Water column samples were collected in February and March 2023 aboard the R/V Atlantic Explorer using a trace metal clean rosette (SeaBird) outfitted with 12-L Niskin-X samplers (Ocean Test Equipment), a trace metal clean pump, or a custom surface pump “towfish” system (Mellett and Buck, 2020). Seawater samples for macronutrient analysis were filtered through 0.2 µm Pall Acropak Super membrane filter capsules, collected in acid-cleaned and triple-rinsed 15-mL Falcon tubes, and stored in ziplock bags in the fridge until analyzed shipboard following recommended practices (Becker et al., 2020), typically within 24 hours of collection.&nbsp;</p>
<p>Samples were analyzed shipboard for phosphate, nitrate+nitrite, silicate, and nitrite on a QuAAtro39 AutoAnalyzer (SEAL Analytical) according to standard colorimetric methods (Strickland and Parsons, 1972).&nbsp;All reagents were prepared in dedicated labware with high purity Milli-Q (&gt;18 MΩ cm) water. Working standards were prepared fresh daily in an artificial seawater (ASW; 35 g/L sodium chloride, 0.5 g/L sodium bicarbonate) matrix using calibrated volumetric pipettes.&nbsp;</p>
<p>Nine-point standard curves were analyzed at the beginning of each run with multiple reagent blanks. Quality control checks were analyzed every twelfth sample with ASW blanks and standards. The highest standard from the calibration curve was analyzed approximately every twenty samples to check for drift during the runs. Subsamples of reference material for nutrients in seawater (Konso) were measured in each run (see Table 1 below).&nbsp;</p>
<p>Detection limits for each parameter were determined from three times the standard deviation of replicate lowest standards. Limits of detection were 0.035 µM for phosphate, 0.048 µM for nitrate+nitrite, 0.051 µM for silicate, and 0.012 µM for nitrite. Values below detection are reported as 0 µM with accompanying QC Flag 6.&nbsp;</p>
<p>&nbsp;</p>
<p>&nbsp;</p>
Specified by the Principal Investigator(s)
<p>Data were flagged using the SeaDataNet quality flag scheme recommended by GEOTRACES (<a href="https://www.geotraces.org/geotraces-quality-flag-policy/">https://www.geotraces.org/geotraces-quality-flag-policy/</a>)&nbsp;and described below. Notes specific to the application of these flags to this dataset are noted in brackets […].</p>
<p class="rteindent1">0: No Quality Control: No quality control procedures have been applied to the data value. This is the initial status for all data values entering the working archive. [Not used].</p>
<p class="rteindent1">1: Good Value: Good quality data value that is not part of any identified malfunction and has been verified as consistent with real phenomena during the quality control process. [See Table 1 for blank and certified reference material values obtained in this study].</p>
<p class="rteindent1">2: Probably Good Value: Data value that is probably consistent with real phenomena, but this is unconfirmed or data value forming part of a malfunction that is considered too small to affect the overall quality of the data object of which it is a part. [Used when no replicate measurements were available to check the quality of the data].</p>
<p class="rteindent1">3: Probably Bad Value: Data value recognized as unusual during quality control that forms part of a feature that is probably inconsistent with real phenomena. [Used when all replicate measurements were too high to be consistent with real phenomena].</p>
<p class="rteindent1">4: Bad Value: An obviously erroneous data value. [Not used].</p>
<p class="rteindent1">5: Changed Value: Data value adjusted during quality control. Best practice strongly recommends that the value before the change be preserved in the data or its accompanying metadata. [Not used].</p>
<p class="rteindent1">6: Value Below Detection Limit: The level of the measured phenomenon was less than the limit of detection (LOD) for the method employed to measure it. The accompanying value is the detection limit for the technique or zero if that value is unknown. [Values below detection are reported as 0.00 µM in the data file. Detection limits for each parameter are listed in the “methods and sampling” section of this form].</p>
<p class="rteindent1">7: Value in Excess: The level of the measured phenomenon was too large to be quantified by the technique employed to measure it. The accompanying value is the measurement limit for the technique. [Not used].</p>
<p class="rteindent1">8: Interpolated Value: This value has been derived by interpolation from other values in the data object. [Not used].</p>
<p class="rteindent1">9: Missing Value: The data value is missing. Any accompanying value will be a magic number representing absent data [When sample was not collected the notation ‘na’ for ‘not applicable’ was used; when sample collected but there is no result for this parameter, the notation ‘NDA’ for ‘no data available’ was used].</p>
<p class="rteindent1">A: Value Phenomenon Uncertain: There is uncertainty in the description of the measured phenomenon associated with the value such as chemical species or biological entity. [Not used.]</p>
Specified by the Principal Investigator(s)
FAIR standards that have been applied to the published primary data file:
- Spaces from column names replaced with underscores ("_").
- Special characters in column names replaced with plain text (i.e., "%" has been replaced with "percent").
- Date formats converted from %m/%d/%y to %Y-%m-%d.
- Column "ISO_DateTime_UTC" created by merging the DATE_UTC and TIME_UTC columns.
Version history notes:
Version 2 of this dataset contains corrections to version 1; the NO3+NO2 and PO4 values in Version 1 are swapped and incorrect. Version 2 also includes replicate count values.
Version 3 of this dataset contains dataset and metadata updates, including Cruise ID, Map station numbers, Map station coordinates, and Incubation bottle numbers, treatments and timepoints. No changes have been made to dataset values that existed in Version 2 of the data file.
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
Towfish
Towfish
PI Supplied Instrument Name: Towfish PI Supplied Instrument Description:Seawater samples were collected with a custom surface sampling system, “towfish” (Mellett and Buck 2020), comprised of acid cleaned Bev-A-Line-IV tubing and an Almatec Double PTFE Diaphragm Pump. Instrument Name: Discrete water sampler Instrument Short Name: Instrument Description: A device that collects an in-situ discrete water sample from any depth and returns it to the surface without contamination by the waters through which it passes, such as a water bottle.
12-L X-Niskin bottles (Ocean Test Equipment)
12-L X-Niskin bottles (Ocean Test Equipment)
PI Supplied Instrument Name: 12-L X-Niskin bottles (Ocean Test Equipment) PI Supplied Instrument Description:12-L trace metal clean modified X-Niskin bottles (Ocean Test Equipment) mounted on a trace metal clean rosette with a programmable autofire module (Seabird) and deployed on 1/4” 12-strand Spectra synthetic line to collect depth profile seawater samples. Instrument Name: Niskin bottle Instrument Short Name:Niskin bottle Instrument Description: A Niskin bottle (a next generation water sampler based on the Nansen bottle) is a cylindrical, non-metallic water collection device with stoppers at both ends. The bottles can be attached individually on a hydrowire or deployed in 12, 24, or 36 bottle Rosette systems mounted on a frame and combined with a CTD. Niskin bottles are used to collect discrete water samples for a range of measurements including pigments, nutrients, plankton, etc. Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0412/
QuAAtro39 AutoAnalyzer (SEAL Analytical)
QuAAtro39 AutoAnalyzer (SEAL Analytical)
PI Supplied Instrument Name: QuAAtro39 AutoAnalyzer (SEAL Analytical) PI Supplied Instrument Description:QuAAtro39 AutoAnalyzer (SEAL Analytical) was used to measure macronutrient concentrations in seawater samples. Instrument Name: Nutrient Autoanalyzer Instrument Short Name:Nutrient Autoanalyzer Instrument Description: Nutrient Autoanalyzer is a generic term used when specific type, make and model were not specified. In general, a Nutrient Autoanalyzer is an automated flow-thru system for doing nutrient analysis (nitrate, ammonium, orthophosphate, and silicate) on seawater samples. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB04/
TM Pump
TM Pump
PI Supplied Instrument Name: TM Pump PI Supplied Instrument Description:Wilden Pro-Flo Series P100 PTFE Diaphram Pump was deployed on 1/4” 12-strand Spectra synthetic line to collect surface and depth profile seawater samples at stations with water depth Instrument Name: Pump Instrument Short Name: Instrument Description: A pump is a device that moves fluids (liquids or gases), or sometimes slurries, by mechanical action. Pumps can be classified into three major groups according to the method they use to move the fluid: direct lift, displacement, and gravity pumps
Cruise: AE2305
AE2305
R/V Atlantic Explorer
Community Standard Description
International Council for the Exploration of the Sea
R/V Atlantic Explorer
vessel
AE2305
Angela N. Knapp
Florida State University
R/V Atlantic Explorer
Community Standard Description
International Council for the Exploration of the Sea
R/V Atlantic Explorer
vessel