Dataset: coral-light expt.- PAR
Deployment: lab_Edmunds_NMMBA

Light measurements from coral-light experiments (Dufault, 2013, JEB)

Principal Investigator:

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

Student:

Aaron M. Dufault (California State University Northridge, CSUN)

BCO-DMO Data Manager:

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

Project:

Moorea Coral Reef Long-Term Ecological Research site (MCR LTER)

The ecophysiological basis of the response of coral larvae and early life history stages to global climate change (Climate_Coral_Larvae)

Current State:

Final no updates expected

Version:

2014-08-30

Version Date:

2014-08-30

Data URL:

https://osprey.bco-dmo.org/dataset-deployment/527727/data

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Description

The effect of light and PCO2 on the calcification and survival of Pocillopora damicornis recruits settled from larvae
released in southern Taiwan was tested.

These data include the irradiance (PAR) measurements for each light treatment in each of the tanks over the duration of the experiment.

These data were published in Aaron M Dufault, Aaron Ninokawa, Lorenzo Bramanti, Vivian R Cumbo, Tung-Yung Fan, Peter J Edmunds (2013) The role of light in mediating the effects of ocean acidification on coral calcification. Journal of Experimental Biology 216: 1570-1577. doi:10.1242/jeb.080549

Download complete data for this publication (Excel file)

Methods & Sampling

Dataset acquisition description

In March 2011and June 2012, recruits were incubated at 31, 41, 70, 122 and 226 µmol photons m-2 s-1 under ambient (493 µatm) and high PCO2 (878 µatm). After 5 days, calcification was measured gravimetrically and survivorship estimated as the number of living recruits.

Light inside each container was measured twice daily using a small (1 mm diameter) cosine-corrected PAR sensor attached to a pulse amplitude-modulated fluorometer (Diving-PAM, Heinz Walz GmbH, Effeltrich, Germany). The small size of the sensor allowed light to be measured ~1 cm above the coral recruits while they were inside the plastic container and beneath the treatment lids. This sensor was calibrated using a separate light meter (LI-1400 Datalogger fitted with a LI-192 sensor, LI-COR Biosciences).

Data Processing Description

Dataset Processing Description

BCO-DMO processing notes:

- combined expt. 1 and 2
- added conventional header with dataset name, PI name, version date, reference information
- renamed parameters to BCO-DMO standard
- added lab, lat, lon, expt columns
- added days values for expt. 1
- changed values in expt 2 treatment_light from percent to integers to match expt. 1
- sorted by expt, treatment_pCO2, tank, days, time

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-0844785	NSF Division of Ocean Sciences

Instruments

Fluorometer

Supplied Description:

Pulse amplitude-modulated fluorometer (Diving-PAM, Heinz Walz GmbH, Effeltrich, Germany)

Instrument Type

Generic Name: Fluorometer

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/113/

Generic 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.

Light Meter

Supplied Description:

LI-1400 Datalogger fitted with a LI-192 sensor, LI-COR Biosciences

Instrument Type

Generic Name: Light Meter

Generic Description:

Light meters are instruments that measure light intensity. Common units of measure for light intensity are umol/m2/s or uE/m2/s (micromoles per meter squared per second or microEinsteins per meter squared per second). (example: LI-COR 250A)

Photosynthetically Available Radiation Sensor

Supplied Name: PAR sensor

Supplied Description:

Instrument Type

Generic Name: Photosynthetically Available Radiation Sensor

Acronym: PAR sensor

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/122/

Generic Description:

A PAR sensor measures photosynthetically available (or active) radiation. The sensor measures photon flux density (photons per second per square meter) within the visible wavelength range (typically 400 to 700 nanometers). PAR gives an indication of the total energy available to plants for photosynthesis. This instrument name is used when specific type, make and model are not known.

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
lab	laboratory	unitless	laboratory
lat	latitude; north is positive	degrees	lat
lon	longitude; east is positive	degrees	lon
expt	experiment identification number	unitless	exp_id
tank	tank identification number	unitless	tank
treatment_pCO2	relative partial pressure of carbon dioxide (pCO2) target for treatment	unitless	pCO2
days	number of days into the experiment	days	days
date	date	yyyy/mm/dd	date
time	time	HHMM	time
treatment_light	light level for treatment	umol photons/m2/s	irradiance
PAR	photosynthetically active radiation	uE/cm^2/sec	PAR

Database

Contribute Data

Dataset: coral-light expt.- PAR
Deployment: lab_Edmunds_NMMBA

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: coral-light expt.- PARDeployment: lab_Edmunds_NMMBA

Dataset acquisition description

Dataset Processing Description

Dataset: coral-light expt.- PAR
Deployment: lab_Edmunds_NMMBA