Dataset: BrownOsenberg_2018- InitO2_DBLthick

Name: Oxygen concentrations measured at increasing distances over coral-algal interactions at Moorea, French Polynesia (Vermetids_Corals project)
Published: 2017-10-05
Keywords: oceans

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Spatial Extent: N:-17.47279 E:-149.78277 S:-17.48365 W:-149.84698

Project:

Spatial patterns of coral-vermetid interactions: short-term effects and long-term consequences (Vermetids_Corals)

Principal Investigator:

Anya L. Brown (University of Georgia, UGA)

Co-Principal Investigator:

Craig Osenberg (University of Georgia, UGA)

Contact:

Anya L. Brown (University of Georgia, UGA)

BCO-DMO Data Manager:

Mathew Biddle (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

2017-10-05

Version Date:

2017-10-05

Restricted:

Yes

Current State:

Preliminary and in progress

Oxygen concentrations measured at increasing distances over coral-algal interactions at Moorea, French Polynesia (Vermetids_Corals project)

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Description

Belongs to set of datasets that evaluate how vermetid (Ceraesignum maximum) modify physical and chemical conditions above coral-algal interactions (i.e., light, flow and oxygen).

Related Datasets:

BrownOsenberg_2018- Fluorescein dye: https://www.bco-dmo.org/dataset/717831
BrownOsenberg_2018- FlDyeSurvey: https://www.bco-dmo.org/dataset/720777
BrownOsenberg_2018- InitO2_DBLthick: https://www.bco-dmo.org/dataset/720822 (The current page)
BrownOsenberg_2018- LightSensor: https://www.bco-dmo.org/dataset/720874
BrownOsenberg_2018- OxygenConcentrations: https://www.bco-dmo.org/dataset/720960

Methods & Sampling

Experiments and surveys were conducted in the field to determine how vermtetids affect light, flow and oxygen concentrations. Below are the methods for the experiment:

Samples are cores removed from the field with intact interactions (half massive Porites corals and half algal turf). Samples were removed with pneumatic drill with a hole saw attachment.

Oxygen concentration profiles were measured using a PreSens needle microsensor oxygen probe (diameter: <50 μm) attached to a PreSens Microx TX3 system (PreSens Precision Sensing GmbH). The probe was attached to a micromanipulator, which allowed fine-scale, precise motion to measure oxygen concentration profiles. The probe was lowered through the net to the coral surface. From the raw oxygen concentration profiles, data were then separated by core, and in R, DBL thicknesses and initial oxygen (starting point O2) concentrations were extracted.

Data Processing Description

DBL thicknesses were determined by the height at which oxygen concentrations reached 99% of the bulk oxygen concentration.
Initial oxygen concentrations are the oxygen concentrations at the surface of the coral, algae and interface.
Data extraction completed in R.

BCO-DMO Processing:

added conventional header with dataset name, PI name, version date
modified parameter names to conform with BCO-DMO naming conventions

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1130359

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
Osenberg_et_al_Moorea		2003-05-19	Osenberg et al Moorea	Craig Osenberg (Principal Investigator)	data info

Instruments

Diving Mask and Snorkel

Supplied Name:

Supplied Description:

Instrument Type

Generic Name: Diving Mask and Snorkel

Generic Description:

A diving mask (also half mask, dive mask or scuba mask) is an item of diving equipment that allows underwater divers, including, scuba divers, free-divers, and snorkelers to see clearly underwater.

Snorkel: A breathing apparatus for swimmers and surface divers that allows swimming or continuous use of a face mask without lifting the head to breathe, consisting of a tube that curves out of the mouth and extends above the surface of the water.

Oxygen Sensor

Supplied Name: PreSens needle microsensor oxygen probe

Supplied Description:

Oxygen concentration profiles were measured using a PreSens needle microsensor oxygen probe (diameter: <50 μm) attached to a PreSens Microx TX3 system (PreSens Precision Sensing GmbH).

Instrument Type

Generic Name: Oxygen Sensor

Acronym: Dissolved Oxygen Sensor

Generic Description:

An electronic device that measures the proportion of oxygen (O2) in the gas or liquid being analyzed

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
samp_num	core from which samples were taken	unitless	sample
flow	flow speed (low/high)	unitless	no_bcodmo_term
light_dark	Light type (light or dark)	unitless	exp_type
surface	surface over which measurements were taken (coral; algae; interaction)	unitless	sample_descrip
net_pres	Presence or absence of net (Net or NoNet)	unitless	sample_descrip
intr_oxy	surface oxygen concentration (%air saturation)	percent air saturation (%air saturation)	O2
dbl_thick	Thickness of diffusive boundary layer	um (microns)	no_bcodmo_term

Status message

Database

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Dataset: BrownOsenberg_2018- InitO2_DBLthick