Dataset: Primary light intensity time-series 2016-2017

Name: Raw and corrected light intensity time-series records at onshore and underwater sites at Rosario, Abanico and Varadero reefs, Colombia, Nov 2016-Dec 2017 (Varadero Reef project)
Published: 2018-03-01
Keywords: oceans

Cite This Dataset

Spatial Extent: N:10.3028 E:-75.5819 S:10.3028 W:-75.5819

Temporal Extent: 2016-11-26 - 2017-12-04

Project:

RAPID: Coral robustness: lessons from an "improbable" reef (Varadero Reef)

Principal Investigator:

Mónica Medina (Pennsylvania State University, PSU)

Co-Principal Investigator:

Roberto Iglesias-Prieto (Pennsylvania State University, PSU)

Contact:

Tomás Lopez Lodoño (Pennsylvania State University, PSU)

BCO-DMO Data Manager:

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

Version:

Version Date:

2018-03-01

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Raw and corrected light intensity time-series records at onshore and underwater sites at Rosario, Abanico and Varadero reefs, Colombia, Nov 2016-Dec 2017 (Varadero Reef project)

Abstract:

This dataset contains the light intensity raw values and the corrected light intensity values collected by the Odyssey-PAR sensors deployed at the three study sites: Varadero (10°18’23.3"N, 75°35’08.0"W), Rosario (10°11'12.1"N, 75°44'43.0"W) and Abanico (10°18'5.80"N, 75°34'37.10"W). To obtain the corrected light intensity values, we applied a correction factor to the raw data which was obtained from the calibration of each Odyssey-PAR sensor against a manufacturer-calibrated quantum sensor (LI-1400, LI-COR). The deployment location (onshore and underwater), the date, and time for each record are specified.

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Description

Related Reference:
Pizarro V, Rodríguez SC, López-Victoria M, Zapata FA, Zea S, Galindo-Martínez CT, Iglesias-Prieto R, Pollock J, Medina M. (2017) Unraveling the structure and composition of Varadero Reef, an improbable and imperiled coral reef in the Colombian Caribbean. PeerJ 5:e4119 https://doi.org/10.7717/peerj.4119

Methods & Sampling

The Varadero Reef is located south-west of the Cartagena Bay close to the southern strait that connects the Bay to the Caribbean Sea in Colombia (10°18’23.3"N, 75°35’08.0"W). The Bay is a receiving estuary from the Magdalena River through the Canal del Dique, a man-made channel whose construction and operation dates back almost a century. The depth of the particular transplant site in Varadero is 3.5m, while in Abanico, a nearby site with low coral cover, and Rosario, a site inside a marine protected area located south-west with relatively high coral cover, is 3m and 12m.

The local light environment at each experimental site was continuously monitored by attaching a light sensor to the PVC panel where the corals were mounted at each site. The Odyssey-PAR sensors were previously calibrated against a manufacturer-calibrated quantum sensor. The sensors were cleaned and downloaded every two/three months.

The light sensors used to monitor the light intensity at each site were Odyssey submersible PAR logger (Dataflow systems Ltda, Christchurch, New Zealand). The manufacturer-calibrated quantum sensor used to calibrate the Odyssey sensors was a LI-1400 (LI-COR, Nebraska, USA). Both types of sensors are cosine-corrected light intensity sensors.

Odyssey data logging software (Dataflow systems Ltda, Christchurch, New Zealand) was used to manage the logger and data operations.

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
- reformatted date from m/d/yyyy to yyyy-mm-dd
- added ISO_DateTime_UTC column
- blank values were replaced with no data value 'nd'

Data Files

File
light_raw.csv (Comma Separated Values (.csv), 7.76 MB) MD5:55d9afc39e4b4c83e3e88bb7602426ab Primary data file for dataset ID 718956

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1642311

Deployments

None available yet

Instruments

Data Logger

Supplied Name: LI-1400 (LI-COR, Nebraska, USA)

Supplied Description:

Data logger connected to a quantum sensor was used to calibrate the Odyssey sensors

Instrument Type

Generic Name: Data Logger

Generic Description:

Electronic devices that record data over time or in relation to location either with a built-in instrument or sensor or via external instruments and sensors.

Light Meter

Supplied Name: Odyssey submersible PAR logger (Dataflow systems Ltda, Christchurch, New Zealand)

Supplied Description:

Used to monitor the light intensity at each site.

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)

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
site	reef name	unitless	site
site_description	subsite on reef: onshore or underwater	unitless	site_descrip
year	year	unitless	year
month	month	unitless	month
day	day	unitless	day
date_utc	date; UTC	unitless	date
time_utc	time; UTC	unitless	time
ISO_DateTime_UTC	date/time (UTC) ISO formatted based on ISO 8601:2004(E) with format YYYY-mm-ddTHH:MM:SS	unitless	ISO_DateTime_UTC
light_raw	light intensity raw value	integrated millivolts (mV)	trans_v
light_corr	light corrected (crrx) value	micromoles quanta/meter^2/second (umol quanta m-2 s-1)	irradiance

Status message

Database

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Dataset: Primary light intensity time-series 2016-2017