Dataset: Ulva rapid light curves (RLC)

Name: Rapid light curves of Ulva australis based on PAM fluorometry under OA and eutrophication (Seaweed OA Resilience project)
Published: 2018-03-21
Keywords: biota, oceans

Cite This Dataset

Spatial Extent: N:-42.998 E:147.33 S:-42.998 W:147.33

Temporal Extent: 2015-07

Project:

Ocean Acidification: Scope for Resilience to Ocean Acidification in Macroalgae (Seaweed OA Resilience)

Program:

Science, Engineering and Education for Sustainability NSF-Wide Investment (SEES): Ocean Acidification (formerly CRI-OA) (SEES-OA)

Principal Investigator:

Janet E. Kubler (California State University Northridge, CSUN)

Co-Principal Investigator:

Steve Dudgeon (California State University Northridge, CSUN)

Contact:

Leah Reidenbach (Stony Brook University - SoMAS, SUNY-SB SoMAS)

BCO-DMO Data Manager:

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

Version Date:

2018-03-21

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Rapid light curves of Ulva australis based on PAM fluorometry under OA and eutrophication (Seaweed OA Resilience project)

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Description

This dataset reports rapid light curves (RLC) of Ulva australis based on PAM fluorometry under OA and eutrophication. Conditions varied by light/dark cycle, nitrogen enrichment, and light levels.

Related Datasets:

Ulva pCO2 - NH4 enrichment: Data on growth rates, and physiological parameters of Ulva australis under ocean acidification (OA) and eutrophication, from July 2015 (Seaweed OA Resilience project)

Ulva pHT monitoring: Time-series of estimating pH in culture tanks of Ulva australis under ocean acidification (OA) and eutrophication (Seaweed OA Resilience project)

Rapid Light Curves_PAM: Measurements of fluorescence of photosystem II in Plocamium cartilagineum under various and pCO2 and temperature conditions

Methods & Sampling

Average pH values for day, night and whole day samples were estimated by taking the corresponding samples for each period, calculating the hydrogen ion concentration for each observation, estimating the average for the sample and taking the minus log10 of the average value to estimate average pH. A complete description of methods for implementation and monitoring of experimental treatments, and sampling methods to estimate response variables provided in the following publication:

Related Reference:

Reidenbach LB, Fernandez PA, Leal PP, Noisette F, McGraw CM, Revill AT, et al. (2017). Growth, ammonium metabolism, and photosynthetic properties of Ulva australis (Chlorophyta) under decreasing pH and ammonium enrichment. PLoS ONE 12(11): e0188389. https://doi.org/10.1371/journal.pone.0188389

Data Processing Description

BCO-DMO Processing Notes:
- added a conventional header with dataset description, PI names, version date

Data Files

File
RLC_Ulva_australis.csv (Comma Separated Values (.csv), 8.98 KB) MD5:dd141566c2f3c83418407321e8b9f562 Primary data file for dataset ID 731284

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1316198
NSF Office of International Science and Engineering	OISE-1515267

Deployments

None available yet

Instruments

Fluorometer

Supplied Name: Walz Underwater fluorometer - Diving-PAM, Heinz Walz, Effeltrich, Germany

Supplied Description:

Used to measure chlorophyll fluorescence

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.

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
Tank_valve	Tank valve ID for culture treatment	unitless	no_bcodmo_term
MFC_ID	Mass-flow controller ID	unitless	no_bcodmo_term
Light_Cycle_pHT	Average of all total pH values between daily time 0700-1900 during the experiment for a tank	unitless	pH
Dark_Cycle_pHT1	Average of all total pH values between daily time 1900-0700 during the experiment for a tank	unitless	pH
Whole_Day_pHT	Average of all total pH values during the experiment for a tank	unitless	pH
NH4_Trt	Designated level of treatment of ammonium enrichment categorical descriptor	unitless	treatment
PAR	Photosynthetically active radiation	micromole photons/meter^2/second	PAR
rETR	Relative electron transport rate at each photon flux density	unitless	no_bcodmo_term
rETR_beta_fit	Calculated relative electron transport rate fit with a hyperbolic function that includes a photoinhibition parameter	unitless	no_bcodmo_term

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Database

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Dataset: Ulva rapid light curves (RLC)