Dissolved nutrient data from RVIB Nathaniel B Palmer cruise (NBP18-01) in the Amundsen and Ross Seas from December 2017 to March 2018

Website: https://www.bco-dmo.org/dataset/874841
Data Type: Cruise Results
Version: 1
Version Date: 2022-05-25

Project
» Collaborative Research: Cobalamin and Iron Co-Limitation Of Phytoplankton Species in Terra Nova Bay (CICLOPS)
ContributorsAffiliationRole
Saito, Mak A.Woods Hole Oceanographic Institution (WHOI)Principal Investigator
DiTullio, GiacomoCollege of Charleston - Hollings Marine Lab (CoC-HML)Co-Principal Investigator
Chmiel, RebeccaWoods Hole Oceanographic Institution (WHOI)Contact
Gerlach, Dana StuartWoods Hole Oceanographic Institution (WHOI BCO-DMO)BCO-DMO Data Manager

Abstract
This dataset provides seawater macronutrient concentrations from the Amundsen and Ross Seas, including from Terra Nova Bay, collected onboard the R/V Nathaniel B. Palmer as part of the Cobalamin and Iron Co-Limitation of Phytoplankton Species (CICLOPS) expedition from December 11, 2017 to March 3, 2018. Samples analyzed for phosphate, nitrite, nitrate + nitrite, silicate and ammonia were collected from full depth profiles via a trace-metal-clean rosette (TMR), filtered with a 0.2 um filter, and stored frozen until analysis via a nutrient autoanalyzer. Sensor hydrography data from each sample depth is also provided.


Coverage

Spatial Extent: N:-72.751 E:-116.001 S:-77.495 W:179.819
Temporal Extent: 2017-12-31 - 2018-01-03

Acquisition Description

Hydrographic data was collected during the RVIB Nathaniel B. Palmer cruise (NBP1801) from December 31st, 2017 to March 3rd, 2018. Samples were collected by trace metal rosette (TMR) using the Saito laboratory 8L X-Niskin bottles. Bottles were brought into a clean van, pressurized with high-purity nitrogen gas and filtered through 0.2 micron 142mm Supor membrane filters. Nutrient samples were filled in acid-washed 60mL HDPE bottles and frozen until analysis. 

Nutrient analyses were conducted by Joe Jennings at Oregon State University using a nutrient autoanalyzer following the methods of Noble et al. (2012). Technicon AutoAnalyzer II components were used to measure phosphate and ammonium. Alpkem rapid flow analyzer (RFA) 300 components were used to measure silicic acid, nitrate+nitrite, and nitrite.

For quality control (QC) notes, please see the document "Quality Control notes for NBP1801 nutrients" in the Supplemental Files section. 

NOTE:  The PAR sensor was not present on the first leg of the cruise, so PAR values were not measured until Station 35.  


Processing Description

BCO-DMO processing
- converted Date to YMD format
- added conventional header with dataset name, PI name, version date
- modified parameter names to conform with BCO-DMO naming conventions


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Supplemental Files

File
Quality Control notes for NBP1801 nutrients
filename: QC_notes_NBP1801_nutrients.pdf
(Portable Document Format (.pdf), 412.57 KB)
MD5:7a6a8ec6f83598697cfda51740f7bd11
Quality Control notes for NBP1801 nutrients

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Related Publications

Noble, A. E., Lamborg, C. H., Ohnemus, D. C., Lam, P. J., Goepfert, T. J., Measures, C. I., … Saito, M. A. (2012). Basin-scale inputs of cobalt, iron, and manganese from the Benguela-Angola front to the South Atlantic Ocean. Limnology and Oceanography, 57(4), 989–1010. doi:10.4319/lo.2012.57.4.0989
Methods

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Related Datasets

IsRelatedTo
Saito, M. A., DiTullio, G. (2022) Event log from RVIB Nathaniel B. Palmer cruise NBP1801 in the Southern Ocean for the CICLOPS project. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2022-05-09 http://lod.bco-dmo.org/id/dataset/874099 [view at BCO-DMO]
Saito, M. A., DiTullio, G. (2022) Hydrography sensor data from trace metal rosette (TMR) casts at 26 stations near coastal Antarctica during RVIB Nathaniel B. Palmer cruise NBP18-01. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2022-05-26 http://lod.bco-dmo.org/id/dataset/874909 [view at BCO-DMO]

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Parameters

ParameterDescriptionUnits
Date_sampledDate of sampling unitless
CruiseCruise ID unitless
StationStation unitless
LatitudeLatitude decimal degrees
LongitudeLongitude decimal degrees
Bottle_NumberNiskin bottle number unitless
DepthDepth at which water sample was collected meters (m)
Bottom_depthDepth of seafloor meters (m)
TemperatureTemperature from primary sensor degrees Celsius (°C)
ConductivityConductivity from primary sensor milliSiemens per centimeter (mS/cm)
dO2Dissolved Oxygen from secondary sensor milligrams per liter (mg/L)
FluorescenceFluorescence milligrams per cubic meter (mg/m^3)
Transmisson_pctPercent transmission percent (%)
PARPhotosynthetically active radiation watts per square meter (W/m^2)
SalinitySalinity PSU
PO4Phosphate micromolar (uM)
NO3_NO2Nitrate plus nitrite micromolar (uM)
SilicateSilicate micromolar (uM)
NO2Nitrite micromolar (uM)
NH4Ammonia micromolar (uM)


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Instruments

Dataset-specific Instrument Name
8L X-Niskin bottles
Generic Instrument Name
Niskin bottle
Dataset-specific Description
Samples were collected using Saito laboratory 8L X-Niskin bottles. 
Generic 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.

Dataset-specific Instrument Name
Sea-Bird 4C conductivity sensor
Generic Instrument Name
Sea-Bird SBE-4 Conductivity Sensor
Generic Instrument Description
The Sea-Bird SBE-4 conductivity sensor is a modular, self-contained instrument that measures conductivity from 0 to 7 Siemens/meter. The sensors (Version 2; S/N 2000 and higher) have electrically isolated power circuits and optically coupled outputs to eliminate any possibility of noise and corrosion caused by ground loops. The sensing element is a cylindrical, flow-through, borosilicate glass cell with three internal platinum electrodes. Because the outer electrodes are connected together, electric fields are confined inside the cell, making the measured resistance (and instrument calibration) independent of calibration bath size or proximity to protective cages or other objects.

Dataset-specific Instrument Name
Sea-Bird SBE 43 7000m
Generic Instrument Name
Sea-Bird SBE 43 Dissolved Oxygen Sensor
Dataset-specific Description
Trace metal rosette had hydrographic sensors including Sea-Bird SBE 43 7000m Dissolved Oxygen sensor  
Generic Instrument Description
The Sea-Bird SBE 43 dissolved oxygen sensor is a redesign of the Clark polarographic membrane type of dissolved oxygen sensors. more information from Sea-Bird Electronics

Dataset-specific Instrument Name
Generic Instrument Name
CTD Sea-Bird SBE 911plus
Generic Instrument Description
The Sea-Bird SBE 911 plus is a type of CTD instrument package for continuous measurement of conductivity, temperature and pressure. The SBE 911 plus includes the SBE 9plus Underwater Unit and the SBE 11plus Deck Unit (for real-time readout using conductive wire) for deployment from a vessel. The combination of the SBE 9 plus and SBE 11 plus is called a SBE 911 plus. The SBE 9 plus uses Sea-Bird's standard modular temperature and conductivity sensors (SBE 3 plus and SBE 4). The SBE 9 plus CTD can be configured with up to eight auxiliary sensors to measure other parameters including dissolved oxygen, pH, turbidity, fluorescence, light (PAR), light transmission, etc.). more information from Sea-Bird Electronics

Dataset-specific Instrument Name
WetLabs ECO-FL (FLRTD-3928)
Generic Instrument Name
Wet Labs ECO-AFL/FL Fluorometer
Dataset-specific Description
Trace metal rosette had hydrographic sensors including WetLabs ECO-FL (FLRTD-3928) flourometer
Generic Instrument Description
The Environmental Characterization Optics (ECO) series of single channel fluorometers delivers both high resolution and wide ranges across the entire line of parameters using 14 bit digital processing. The ECO series excels in biological monitoring and dye trace studies. The potted optics block results in long term stability of the instrument and the optional anti-biofouling technology delivers truly long term field measurements. more information from Wet Labs

Dataset-specific Instrument Name
Technicon AutoAnalyzer II
Generic Instrument Name
Technicon AutoAnalyzerII
Dataset-specific Description
Technicon AutoAnalyzer II components were used to measure phosphate and ammonium
Generic Instrument Description
A rapid flow analyzer that may be used to measure nutrient concentrations in seawater. It is a continuous segmented flow instrument consisting of a sampler, peristaltic pump, analytical cartridge, heating bath, and colorimeter. See more information about this instrument from the manufacturer.

Dataset-specific Instrument Name
Alpkem rapid flow analyzer (RFA 300)
Generic Instrument Name
Alpkem RFA300
Dataset-specific Description
Alpkem rapid flow analyzer (RFA) 300 components were used to measure silicic acid, nitrate+nitrite, and nitrite.
Generic Instrument Description
A rapid flow analyser (RFA) that may be used to measure nutrient concentrations in seawater. It is an air-segmented, continuous flow instrument comprising a sampler, a peristaltic pump which simultaneously pumps samples, reagents and air bubbles through the system, analytical cartridge, heating bath, colorimeter, data station, and printer. The RFA-300 was a precursor to the smaller Alpkem RFA/2 (also RFA II or RFA-2).

Dataset-specific Instrument Name
Biospherical Instruments QSP-2350
Generic Instrument Name
Biospherical PAR sensor
Dataset-specific Description
Trace metal rosette had hydrographic sensors including Biospherical Instruments QSP-2350 PAR sensor
Generic Instrument Description
Unspecified Biospherical PAR.  An irradiance sensor, designed to measure Photosynthetically Active Radiation (PAR).

Dataset-specific Instrument Name
Sea-Bird SBE3 plus (SBE 3P)
Generic Instrument Name
Sea-Bird SBE 3plus Temperature Sensor
Generic Instrument Description
The Sea-Bird SBE 3plus water temperature sensor is designed for use on the SBE 9plus CTD system. The sensor operates over the range -5 to +35 °C, a resolution of 0.0003 °C at 24 Hz and an initial accuracy of ± 0.001 °C. The typical sampling rate is 24 Hz, and the sensor has a depth rating of 6800 meters (aluminium housing) or 10500 meters (titanium housing).


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Deployments

NBP1801

Website
Platform
RVIB Nathaniel B. Palmer
Start Date
2017-12-16
End Date
2018-03-03
Description
Start Port: Punta Arenas, Chile End Port: Hobart, Australia


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Project Information

Collaborative Research: Cobalamin and Iron Co-Limitation Of Phytoplankton Species in Terra Nova Bay (CICLOPS)

Coverage: Amundsen Sea, Ross Sea, Terra Nova Bay


NSF abstract:
Phytoplankton blooms in the coastal waters of the Ross Sea, Antarctica are typically dominated by either diatoms or Phaeocystis Antarctica (a flagellated algae that often can form large colonies in a gelatinous matrix). The project seeks to determine if an association of bacterial populations with Phaeocystis antarctica colonies can directly supply Phaeocystis with Vitamin B12, which can be an important co-limiting micronutrient in the Ross Sea. The supply of an essential vitamin coupled with the ability to grow at lower iron concentrations may put Phaeocystis at a competitive advantage over diatoms. Because Phaeocystis cells can fix more carbon than diatoms and Phaeocystis are not grazed as efficiently as diatoms, the project will help in refining understanding of carbon dynamics in the region as well as the basis of the food web webs. Such understanding also has the potential to help refine predictive ecological models for the region. The project will conduct public outreach activities and will contribute to undergraduate and graduate research. Engagement of underrepresented students will occur during summer student internships. A collaboration with Italian Antarctic researchers, who have been studying the Terra Nova Bay ecosystem since the 1980s, aims to enhance the project and promote international scientific collaborations.

The study will test whether a mutualistic symbioses between attached bacteria and Phaeocystis provides colonial cells a mechanism for alleviating chronic Vitamin B12 co-limitation effects thereby conferring them with a competitive advantage over diatom communities. The use of drifters in a time series study will provide the opportunity to track in both space and time a developing algal bloom in Terra Nova Bay and to determine community structure and the physiological nutrient status of microbial populations. A combination of flow cytometry, proteomics, metatranscriptomics, radioisotopic and stable isotopic labeling experiments will determine carbon and nutrient uptake rates and the role of bacteria in mitigating potential vitamin B12 and iron limitation. Membrane inlet and proton transfer reaction mass spectrometry will also be used to estimate net community production and release of volatile organic carbon compounds that are climatically active. Understanding how environmental parameters can influence microbial community dynamics in Antarctic coastal waters will advance an understanding of how changes in ocean stratification and chemistry could impact the biogeochemistry and food web dynamics of Southern Ocean ecosystems.



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Funding

Funding SourceAward
NSF Office of Polar Programs (formerly NSF PLR) (NSF OPP)
NSF Office of Polar Programs (formerly NSF PLR) (NSF OPP)
NSF Office of Polar Programs (formerly NSF PLR) (NSF OPP)

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