Dataset: Grazing experiment 4: pCO2

Name: Grazing experiment 4: Carbonate chemistry data for low-high pCO2 acclimated Rhodomonas sp. cultures, 2011-2016 (E Hux Response to pCO2 project)
Published: 2016-12-06
Keywords: biota, oceans

Cite This Dataset

Project:

Planktonic interactions in a changing ocean: Biological responses of Emiliania huxleyi to elevated pCO2 and their effects on microzooplankton (E Hux Response to pCO2)

Principal Investigator:

M Brady Olson (Western Washington University, WWU)

Co-Principal Investigator:

Brooke Love (Western Washington University, WWU)

Suzanne Strom (Western Washington University, WWU)

Student:

Kasey Kendall (Western Washington University, WWU)

BCO-DMO Data Manager:

Nancy Copley (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version Date:

2016-12-06

Restricted:

Release Date:

2017-12-31

Validated:

Yes

Current State:

Final no updates expected

Grazing experiment 4: Carbonate chemistry data for low-high pCO2 acclimated Rhodomonas sp. cultures, 2011-2016 (E Hux Response to pCO2 project)

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Description

Related Reference:

Kendall, K., Marine Microzooplankton are Indirectly Affected by Ocean Acidification Through Direct Effects on Their Phytoplankton Prey. (Masters Thesis) Western Washington University. http://cedar.wwu.edu/wwuet/448/

Methods & Sampling

The phytoplankton Rhodomonas sp. CCMP 755 was grown semi-continuously in atmosphere controlled chambers at three different CO2 treatment concentrations; Ambient (400ppmv), Moderate (750ppmv), and High (1000ppmv). Cultures were diluted daily starting day 4 with pre-equilibrated media containing f/50 nutrients. Some of the culture removed was used to evaluate chemical parameters. Samples for pH were filtered through a GFF to remove cells and loose coccoliths both of which increase optical scatter. Samples were warmed to 25°C in a water bath and run within three hours of sampling. pH was analyzed spectrophotometrically with m-cresol dye on an Agilent 8453A UV-VIS Diode Array Spectrophotometer. Samples for total alkalinity were taken on growth days 5, 7 and 10. Alkalinity was measured by gran titration using a Titrando 888, and 0.1 N HCl titrant, in a temperature controlled titration vessel (+/1 5 ueq/kg). Other parameters were calculated with CO2sys.

Data Processing Description

BCO-DMO Processing Notes:
- added conventional header with dataset name, PI name, version date
- modified parameter names to conform with BCO-DMO naming conventions
- nd (no data) was entered into all blank cells

Data Files

File
expt4_pCO2.csv (Comma Separated Values (.csv), 2.14 KB) MD5:f9a824d56ddbace19be86b6a10dbee41 Primary data file for dataset ID 668621

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-0961229

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
Lab_Olson_B		2011-03-31	WWU		data info

Instruments

Automatic titrator

Supplied Name:

Supplied Description:

Titrando 888

Instrument Type

Generic Name: Automatic titrator

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB12/

Generic Description:

Instruments that incrementally add quantified aliquots of a reagent to a sample until the end-point of a chemical reaction is reached.

Spectrophotometer

Supplied Name: Agilent 8453A UV-VIS Diode Array Spectrophotometer

Supplied Description:

Instrument Type

Generic Name: Spectrophotometer

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB20/

Generic Description:

An instrument used to measure the relative absorption of electromagnetic radiation of different wavelengths in the near infra-red, visible and ultraviolet wavebands by samples.

Parameters

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
treatment_rep	sample identifier: treatment replicate that names the sample and the day of semi-continuous culture	unitless	replicate
pH	pH: The measure of the acidity or basicity of an aqueous solution	unitless; pH scale	pH
pCO2	Partial pressure of carbon dioxide in the water body by computation from pH and alkalinity	parts per million by volume (ppmv)	pCO2
DIC	dissolved inorganic carbon	micromoles/kilogram (umol/kg)	DIC
total_alkalinity	total alkalinity of the culture material removed	micromoles/kilogram (umol/kg)	TALK

Status message

Database

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Dataset: Grazing experiment 4: pCO2