CTD data collected on three NSF RAPID Plankton cruises on R/V Point Sur and R/V Pelican in the Gulf of Mexico during 2017-2018

Website: https://www.bco-dmo.org/dataset/827969
Data Type: Cruise Results
Version: 1
Version Date: 2020-11-02

Project
» Collaborative Research: RAPID-HARVEY: Response of plankton assemblages and trophodynamics to a historic, hurricane-induced floodwater plume in a subtropical, pelagic environment (RAPID Plankton)
ContributorsAffiliationRole
Stauffer, BethUniversity of Louisiana at LafayettePrincipal Investigator
Geist, SimonTexas A&M, Corpus Christi (TAMU-CC)Co-Principal Investigator
Robinson, Kelly L.University of Louisiana at LafayetteCo-Principal Investigator, Contact
Schnetzer, AstridNorth Carolina State University (NCSU)Co-Principal Investigator
Kurtay, GulceUniversity of Louisiana at LafayetteStudent
Rauch, ShannonWoods Hole Oceanographic Institution (WHOI BCO-DMO)BCO-DMO Data Manager

Abstract
This dataset includes processed CTD data collected during three NSF RAPID Plankton cruises. RAPID Plankton Cruise 1 took place on R/V Point Sur, cruise number PS1813, from October 28-November 3, 2017. RAPID Plankton Cruise 2 took place on R/V Pelican, cruise number PE18-18, from January 6- 12, 2018. RAPID Plankton Cruise 3 took place on R/V Pelican, cruise number PE18-21, from March 19- 23, 2018. Data were collected at 10 stations on each cruise.


Coverage

Spatial Extent: N:29.30622 E:-93.68694 S:27.31797 W:-95.20932
Temporal Extent: 2017-11-03 - 2018-03-22

Dataset Description

Data collected during three NSF RAPID Plankton cruises.

RAPID Plankton Cruise 1 took place on R/V Point Sur, cruise number PS1813, from October 28-November 3, 2017. CTD data are reported from 10 stations.

RAPID Plankton Cruise 2 took place on R/V Pelican, cruise number PE18-18, from January 6- 12, 2018. CTD data are reported from 10 stations.

RAPID Plankton Cruise 3 took place on R/V Pelican, cruise number PE18-21, from March 19- 23, 2018. CTD data are reported from 10 stations.


Methods & Sampling

On each cruise, the CTD was lowered to within 10m of the bottom, or to the target max depth at standard speeds (30m/min first 100m, 60m/min thereafter). Water samples were collected in Niskin bottles during the upcast. CTD cast ended at approx. 2-5m, which counted as the surface for each cast.

Known Problems:
RAPID Plankton Cruise 1 (PS1813): Station 10, parameter (CDOM) malfunction observed.
RAPID Plankton Cruise 3 (PE18-21): Stations [6-10] WETLabs sensor applied for fluorescence parameter; Stations [1-5] Seapoint sensor applied for fluorescence parameter; Fluorecence sensor changed due to the malfunction of sensor during cruise.


Data Processing Description

Data Processing:
SBE Data Processing Software Version 7.26.7, from Sea-Bird Scientific was used to convert and bin the data.
Upcast and downcast of hex files converted into cnv file. Converted cnv files binned by using downcast with 0.2 m depth bin.

BCO-DMO Processing:
- concatenated data from all 3 cruises into one dataset; 
- re-named fields to conform with BCO-DMO naming conventions;
- added Cruise_ID column;
- added Cast column.


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Data Files

File
CTD.csv
(Comma Separated Values (.csv), 4.89 MB)
MD5:be7e5b5e132d8a13c39b39488fb48793
Primary data file for dataset ID 827969

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Related Publications

Kurtay, G., Prevost, H. J., & Stauffer, B. A. (2021). Pico‐ and nanoplankton communities on a near to offshore transect along the continental shelf of the northwestern Gulf of Mexico in the aftermath of Hurricane Harvey. Limnology and Oceanography, 66(7), 2779–2796. doi:10.1002/lno.11788
Results
Topor, Z. M., Robinson, K. L., & Turcu, A. (2020). Investigating Seasonal Succession Patterns in Mesozooplankton Community Structure Following Hurricane Harvey. Frontiers in Marine Science, 7. doi:10.3389/fmars.2020.00462
Results

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Parameters

ParameterDescriptionUnits
Cruise_IDCruise identifier unitless
CastCast number unitless
StationStation number unitless
DepthDepth meters
LatitudeLatitude degrees North
LongitudeLongitude degrees East
Potential_Temperature1Potential temperature, primary degrees Celsius
Potential_Temperature2Potential temperature, secondary degrees Celsius
Salinity_Practical1Practical salinity, primary PSU
Salinity_Practical2Practical salinity, secondary PSU
Oxygen_SBE1Dissolved oxygen measured by SBE43, primary milliliters per liter (ml/l)
Oxygen_SBE2Dissolved oxygen measured by SBE43, secondary milliliters per liter (ml/l)
Oxygen_pcnt_sat1Percent oxygen saturation, primary unitless (percent)
Oxygen_pcnt_sat2Percent oxygen saturation, secondary unitless (percent)
Fluorescence_WET_CDOMColored dissolved organic matter (CDOM) milligrams per cubic meter (mg/m^3)
Fluorescence_WETFluorescence measured by WETLabs sensor milligrams per cubic meter (mg/m^3)
Fluorescence_ChelseaFluorescense measure by Chelsea sensor micrograms per liter (ug/l)
Fluorescence_SeapointFluorescence measured by Seapoint sensor micrograms per liter (ug/L)
Beam_AttenuationBeam attenuation 1/m
Beam_TransmissionTransmission unitless (percent)
PAR_IrradiancePhotosynthetically active radiation micromoles photons per square meter per second (umol photons m-2 s-1)
SPARSurface photosynthetically active radiation micromoles photons per square meter per second (umol photons m-2 s-1)
AltimeterAltimeter reading meters (m)
Density1Density, primary kilograms per cubic meter (kg/m^3)
Density2Density, secondary kilograms per cubic meter (kg/m^3)
Oxygen_raw1Raw oxygen, primary volts
Oxygen_raw2Raw oxygen, secondary volts
Conductivity1Conductivity, primary Siemens per meter (S/m)
Conductivity1_2Conductivity, primary (duplicate) Siemens per meter (S/m)
Conductivity_2Conductivity, secondary Siemens per meter (S/m)
Bottles_FiredNumber of bottles fired unitless
flagFlag unitless
Start_ISO_DateTime_UTCStart date and time of cast (UTC) unitless


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Instruments

Dataset-specific Instrument Name
Seabird 9-11 Plus CTD rosette
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
Fluorometer, WET,Labs
Generic Instrument Name
Fluorometer
Dataset-specific Description
WETLabs Fluorometer used on PS1813 cruise; and on PE-18-21 cruise at stations 6-10.
Generic Instrument Description
A fluorometer or fluorimeter is a device used to measure parameters of fluorescence: its intensity and wavelength distribution of emission spectrum after excitation by a certain spectrum of light. The instrument is designed to measure the amount of stimulated electromagnetic radiation produced by pulses of electromagnetic radiation emitted into a water sample or in situ.

Dataset-specific Instrument Name
Fluorometer, Chelsea, Aqua 3
Generic Instrument Name
Fluorometer
Dataset-specific Description
Fluorometer used on cruise PE18-18.
Generic Instrument Description
A fluorometer or fluorimeter is a device used to measure parameters of fluorescence: its intensity and wavelength distribution of emission spectrum after excitation by a certain spectrum of light. The instrument is designed to measure the amount of stimulated electromagnetic radiation produced by pulses of electromagnetic radiation emitted into a water sample or in situ.

Dataset-specific Instrument Name
Fluorometer Seapoint
Generic Instrument Name
Fluorometer
Dataset-specific Description
Fluorometer used on cruise PE18-21 at stations 1-5.
Generic Instrument Description
A fluorometer or fluorimeter is a device used to measure parameters of fluorescence: its intensity and wavelength distribution of emission spectrum after excitation by a certain spectrum of light. The instrument is designed to measure the amount of stimulated electromagnetic radiation produced by pulses of electromagnetic radiation emitted into a water sample or in situ.

Dataset-specific Instrument Name
Biospherical/Licor
Generic Instrument Name
LI-COR Biospherical PAR Sensor
Generic Instrument Description
The LI-COR Biospherical PAR Sensor is used to measure Photosynthetically Available Radiation (PAR) in the water column. This instrument designation is used when specific make and model are not known.

Dataset-specific Instrument Name
SBE43
Generic Instrument Name
Sea-Bird SBE 43 Dissolved Oxygen Sensor
Dataset-specific Description
SBE43: Dissolved oxygen sensors, Owens-Millard Calibration coefficient applied
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
Transmissometer, WET Labs, C-Star
Generic Instrument Name
WET Labs {Sea-Bird WETLabs} C-Star transmissometer
Generic Instrument Description
The C-Star transmissometer has a novel monolithic housing with a highly intgrated opto-electronic design to provide a low cost, compact solution for underwater measurements of beam transmittance. The C-Star is capable of free space measurements or flow-through sampling when used with a pump and optical flow tubes. The sensor can be used in profiling, moored, or underway applications. Available with a 6000 m depth rating. More information on Sea-Bird website: https://www.seabird.com/c-star-transmissometer/product?id=60762467717


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Deployments

PS1813

Website
Platform
R/V Point Sur
Start Date
2017-10-28
End Date
2017-11-03

PE18-18

Website
Platform
R/V Pelican
Start Date
2018-01-06
End Date
2018-01-13
Description
More cruise information is available from the Rolling Deck to Repository (R2R): https://www.rvdata.us/search/cruise/PE18-18

PE18-21

Website
Platform
R/V Pelican
Start Date
2018-03-18
End Date
2018-03-23
Description
More information is available from the Rolling Deck to Repository (R2R): https://www.rvdata.us/search/cruise/PE18-21


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Project Information

Collaborative Research: RAPID-HARVEY: Response of plankton assemblages and trophodynamics to a historic, hurricane-induced floodwater plume in a subtropical, pelagic environment (RAPID Plankton)


Coverage: Northwestern Gulf of Mexico 95-96°W, 30-27.5°N


NSF Award Abstract:
This project will examine how plankton in the northwestern Gulf of Mexico respond to large floodwater plumes generated by extreme weather events like Hurricane Harvey at time scales relevant to its development and evolution (days to months). The goal is to understand how the timing, magnitude, and constituent loads of a massive pulse of freshwater to the Louisiana-Texas shelf are: (1) driving changes in phytoplankton, zooplankton, and larval fish communities and distributions over monthly, seasonal, and annual time scales and, (2) what the consequences of those changes are to food web interactions within the plankton. The timing of Hurricane Harvey flood water disturbance coincides with the summer-fall spawning seasons for economically important Gulf of Mexico fisheries (e.g. red drum, sea trouts, snappers), raising additional questions of longer term effects of food web disruptions on recruitment. This project will train two undergraduate students and four PhD-level graduate students across three institutions, as well as support three early-career investigators. Pre- and post-floodwater plume data and samples will be shared with the broader scientific community within one year of collection to facilitate their immediate use by scientists beyond the research team. The team will give coordinated public talks at established regional science communication series and through other existing regional outreach partnerships to extend the educational scope of the project. Finally, results from this research will be incorporated in course curriculum and shared through scientific presentations and publications in peer-reviewed journals.

Record-breaking rain delivered by Hurricane Harvey to Southeast Texas in late August 2017 has resulted in a massive floodwater plume being delivered to coastal waters in the northern Gulf of Mexico (GOM). This project will investigate the short- and mid-term effects of that plume on planktonic (from pico- to ichthyoplankton) community composition and trophic interactions in that system. Building on data collected in July 2017 during a GOM Ecosystems and Carbon Cycle (GOMECC-3) cruise, and from historical datasets in the region, plankton assemblages, abundance, and food web interactions will assessed during three research cruises 2, 4, and 8 months after the event. Oceanographic data and samples will be collected and processed using standard and state of the art gear, including ZooScan, FlowCAM, flow cytometry, and next generation sequencing. Onboard micro- and mesozooplankton grazing experiments will be conducted to understand the trophodynamic interactions and relationships between different plankton groups under changing environmental conditions. Diet and growth rate analyses of larval fish will be undertaken and related to phyto- and zooplankton (i.e. prey) abundance and community composition data. Application of the same gear types and methods during the three project cruises will ensure comparability of these new data to existing samples and datasets. These post-Harvey data will be compared to immediately-preceding and long-term data collected in the area by NOAA's Southeast Area Monitoring and Assessment Program (SEAMAP), allowing for investigation of the temporal evolution of planktonic assemblages and interpretation of plankton regime shifts in seasonal, multiyear, and decadal contexts.



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Funding

Funding SourceAward
NSF Division of Ocean Sciences (NSF OCE)
NSF Division of Ocean Sciences (NSF OCE)
NSF Division of Ocean Sciences (NSF OCE)

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