Dataset: Comeau 2016: calcification rates
Deployment: MCR_Edmunds

Net calcification rates of coral and calcified algae under pCO2 flume experiments

Principal Investigator:

Peter J. Edmunds (California State University Northridge, CSUN)

Contact:

Peter J. Edmunds (California State University Northridge, CSUN)

Technician:

Megan Vaughan (California State University Northridge, CSUN)

BCO-DMO Data Manager:

Amber D. York (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

Collaborative Research: Ocean Acidification and Coral Reefs: Scale Dependence and Adaptive Capacity (OA coral adaptation)

Data URL:

https://www.bco-dmo.org/dataset-deployment/683727/data

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Description

These data were utilized in the following publication:

Comeau S., Carpenter R.C., Lantz C.A., Edmunds P.J. (2016) Parameterization of the response of calcification to temperature and pCO2 in the coral Acropora pulchra and the alga Lithophyllum kotschyanum. Coral Reefs. doi: 10.1007/s00338-016-1425-0

Methods & Sampling

Dataset acquisition description

The data is from an experiment performed in Moorea from August-October 2014. Constructed communities of corals (Pocillopora spp., massive Porites spp., and Acropora spp.) and crustose coralline algae (Porolithon onkodes) were placed in one of four flumes at either ambient (~400 uatm) or elevated (~1200 uatm) pCO2 for 7 weeks. Net calcification rates at the community scale in the flumes were measured using the total alkalinity anomaly method (Chisholm & Gattuso, 1991), which assumes that for every two moles of AT consumed, one mole of CaCO3 is produced. Net calcification (Gn) was determined at three levels of biological organization (whole community, reef pavement, corals and coralline algae) and four flow speeds (2, 4, 8, and 14 cm s-1). Coral and algal samples were acquired at the barrier reef of the north shore of Moorea at ~15–17 m depth (-17.47423,-149.84258). For more details on methodology used, see Comeau et. al. 2015.

Average chemistry in the flumes during the 7-week experiment please see Carbon Chemistry Table (PDF).

Data Processing Description

Dataset Processing Description

BCO-DMO Data Manager Processing Notes:
* added a conventional header with dataset name, PI name, version date
* modified parameter names to conform with BCO-DMO naming conventions
* blank values replaced with no data value 'nd'
* All values were rounded to three decimal places if more than that.
* latitude and longitude added for experiment location

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-1415268	NSF Division of Ocean Sciences
OCE-1415300	NSF Division of Ocean Sciences

Instruments

Acoustic Doppler Velocimeter

Supplied Name: Vectrino

Supplied Description:

Acoustic Doppler Velocimeter: Vectrino, NortekUSA

Instrument Type

Generic Name: Acoustic Doppler Velocimeter

Acronym: ADV

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/384/

Generic Description:

ADV is the acronym for acoustic doppler velocimeter. The ADV is a remote-sensing, three-dimensional velocity sensor. Its operation is based on the Doppler shift effect. The sensor can be deployed either as a moored instrument or attached to a still structure near the seabed.

Reference:
G. Voulgaris and J. H. Trowbridge, 1998. Evaluation of the Acoustic Doppler Velocimeter (ADV) for Turbulence Measurements. J. Atmos. Oceanic Technol., 15, 272–289. doi: http://dx.doi.org/10.1175/1520-0426(1998)015<0272:EOTADV>2.0.CO;2

Automatic titrator

Supplied Name: Titrator: T50

Supplied Description:

Automatic Titrator: T50, Mettler-Toledo, Switzerland

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.

pH Sensor

Supplied Name: Orion 3-stars, Thermo Scientific

Supplied Description:

pH Sensor: Orion 3-stars, Thermo Scientific, USA, mounted with a combination pH probe (Orion Ross Ultra, Thermo Scientific, USA)

Instrument Type

Generic Name: pH Sensor

Generic Description:

An instrument that measures the hydrogen ion activity in solutions.

The overall concentration of hydrogen ions is inversely related to its pH. The pH scale ranges from 0 to 14 and indicates whether acidic (more H+) or basic (less H+).

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
site	Location of flume; MCR is shorthand for Moorea Coral Reef Long-Term Ecological Research site	unitless	site
lat	Latitude of flume; north is positive	decimal degrees	lat
lon	Longitude of flume; west is negative	decimal degrees	lon
experiment_type	Experiment identifier (community/pavement/flow); see acquisition description for details	unitless	exp_type
treatment	pCO2 treatment in each flume (Amb [ambient] ~400 uatm; OA [ocean acidification] ~1000 uatm)	unitless	treatment
flow	Flow speed in the flume	centimeters per second	exp_type
flume	Flume number	unitless	exp_type
week	Week number of experiment (1-7)	unitless	time_elapsed
day_night	Time sampled (Day/Night)	unitless	exp_type
incubation_period	Time range of incubation (TAHT - Tahiti Time Zone)	unitless	time
light	Light level	tbd	exp_type
gn	Whole community net calcification for a given flume	g CaCO3 m-2 d-1	calcification
gn_corals	Coral and calcifying algae net calcification for a given flume	g CaCO3 m-2 d-1	calcification

Database

Contribute Data

Dataset: Comeau 2016: calcification rates
Deployment: MCR_Edmunds

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: Comeau 2016: calcification ratesDeployment: MCR_Edmunds

Dataset acquisition description

Dataset Processing Description

Dataset: Comeau 2016: calcification rates
Deployment: MCR_Edmunds