ERDDAP > info > bcodmo_dataset_733238

Grid DAP Data	Sub- set	Table DAP Data	Make A Graph	W M S	Source Data Files	Acces- sible	Title	Sum- mary	FGDC, ISO, Metadata	Back- ground Info	RSS	E mail	Institution	Dataset ID
		data	graph		files	public	[Rapid Light Curves_PAM] - Measurements of fluorescence of photosystem II in Plocamium cartilagineum under various and pCO2 and temperature conditions (Ocean Acidification: Scope for Resilience to Ocean Acidification in Macroalgae)		I   M	background			BCO-DMO	bcodmo_dataset_733238

The Dataset's Variables and Attributes

Row Type	Variable Name	Attribute Name	Data Type	Value
attribute	NC_GLOBAL	access_formats	String	.htmlTable,.csv,.json,.mat,.nc,.tsv
attribute	NC_GLOBAL	acquisition_description	String	Plocamium cartilagineum was collected from Catalina Island in June - Nov. 2014 and Jan. 2015. Culture pots were placed in large thermally insulated coolers in a temperature-controlled water bath at either 15 or 20\u00b0C under saturating illumination of ~150 \u00b5moles photons/m^2/s. pCO2 treatments were supplied to closed culture pots by use of a gas mixing system combining Nitrogen, Oxygen and Carbon Dioxide to specific CO2 partial pressures, 20.9% oxygen and the balance being Nitrogen. Measurements of\u00a0chlorophyll fluorescence of photosystem II were made using a pulse amplitude modulated (PAM) fluorometer in situ in culture pots. All samples were dark-adapted prior to measurement by placing a leaf clip in the closed position over the area to be sampled for 5 minutes prior to measurement. For fluorescence measurements, the fiber optic probe was placed directly on the leaf clip perpendicular to the sample. The leaf clip was then opened and a rapid light curve program function was initiated to measure fluorescence at each of 9 photon flux densities (PFD\u2019s). PFD\u2019s of the light curve generated by the fluorometer were calibrated using an external LiCor light meter. Following measurement, the leaf clip was removed and the sample remained in the culture chamber.\u00a0 Data were downloaded from the Diving PAM using WinControl version 3 software for Diving PAM. Note: Trial 1 was a pilot test of culture system and methodological procedures so was not used for data collection in the testing of hypotheses. See Supplemental Files for a table of culture conditions for each of the 8 trials (pdf).
attribute	NC_GLOBAL	awards_0_award_nid	String	55177
attribute	NC_GLOBAL	awards_0_award_number	String	OCE-1316198
attribute	NC_GLOBAL	awards_0_data_url	String	http://www.nsf.gov/awardsearch/showAward?AWD_ID=1316198
attribute	NC_GLOBAL	awards_0_funder_name	String	NSF Division of Ocean Sciences
attribute	NC_GLOBAL	awards_0_funding_acronym	String	NSF OCE
attribute	NC_GLOBAL	awards_0_funding_source_nid	String	355
attribute	NC_GLOBAL	awards_0_program_manager	String	David L. Garrison
attribute	NC_GLOBAL	awards_0_program_manager_nid	String	50534
attribute	NC_GLOBAL	cdm_data_type	String	Other
attribute	NC_GLOBAL	comment	String	Rapid Light Curves - PAM Measurements of fluorescence of photosystem II in Plocamium cartilagineum under various and pCO2 and temperature conditions with pulse amplitude modulated (PAM) fluorometer PI: S. Dudgeon, J. Kubler (CSUN) version: 2018-04-11
attribute	NC_GLOBAL	Conventions	String	COARDS, CF-1.6, ACDD-1.3
attribute	NC_GLOBAL	creator_email	String	info at bco-dmo.org
attribute	NC_GLOBAL	creator_name	String	BCO-DMO
attribute	NC_GLOBAL	creator_type	String	institution
attribute	NC_GLOBAL	creator_url	String	https://www.bco-dmo.org/
attribute	NC_GLOBAL	data_source	String	extract_data_as_tsv version 2.3 19 Dec 2019
attribute	NC_GLOBAL	date_created	String	2018-04-12T12:14:18Z
attribute	NC_GLOBAL	date_modified	String	2019-06-03T17:25:18Z
attribute	NC_GLOBAL	defaultDataQuery	String	&time<now
attribute	NC_GLOBAL	doi	String	10.1575/1912/bco-dmo.733238.1
attribute	NC_GLOBAL	infoUrl	String	https://www.bco-dmo.org/dataset/733238
attribute	NC_GLOBAL	institution	String	BCO-DMO
attribute	NC_GLOBAL	instruments_0_acronym	String	Fluorometer
attribute	NC_GLOBAL	instruments_0_dataset_instrument_description	String	Used to measure chlorophyll fluorescence
attribute	NC_GLOBAL	instruments_0_dataset_instrument_nid	String	733246
attribute	NC_GLOBAL	instruments_0_description	String	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.
attribute	NC_GLOBAL	instruments_0_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/113/
attribute	NC_GLOBAL	instruments_0_instrument_name	String	Fluorometer
attribute	NC_GLOBAL	instruments_0_instrument_nid	String	484
attribute	NC_GLOBAL	instruments_0_supplied_name	String	Walz Underwater fluorometer - Diving-PAM, Heinz Walz, Effeltrich, Germany
attribute	NC_GLOBAL	keywords	String	bco, bco-dmo, biological, carbon, carbon dioxide, chemical, co2, data, dataset, date, dioxide, dmo, erddap, etr, light, management, npq, oceanography, office, pCO2, plant, Plant_ID, preliminary, rETR, tank, Tank_ID, Temp, temperature, time, trial, week, yield
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/733238/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/733238
attribute	NC_GLOBAL	param_mapping	String	{'733238': {}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/733238/parameters
attribute	NC_GLOBAL	people_0_affiliation	String	California State University Northridge
attribute	NC_GLOBAL	people_0_affiliation_acronym	String	CSU-Northridge
attribute	NC_GLOBAL	people_0_person_name	String	Dr Janet E Kubler
attribute	NC_GLOBAL	people_0_person_nid	String	51681
attribute	NC_GLOBAL	people_0_role	String	Principal Investigator
attribute	NC_GLOBAL	people_0_role_type	String	originator
attribute	NC_GLOBAL	people_1_affiliation	String	California State University Northridge
attribute	NC_GLOBAL	people_1_affiliation_acronym	String	CSU-Northridge
attribute	NC_GLOBAL	people_1_person_name	String	Dr Steve Dudgeon
attribute	NC_GLOBAL	people_1_person_nid	String	51682
attribute	NC_GLOBAL	people_1_role	String	Co-Principal Investigator
attribute	NC_GLOBAL	people_1_role_type	String	originator
attribute	NC_GLOBAL	people_2_affiliation	String	Woods Hole Oceanographic Institution
attribute	NC_GLOBAL	people_2_affiliation_acronym	String	WHOI BCO-DMO
attribute	NC_GLOBAL	people_2_person_name	String	Nancy Copley
attribute	NC_GLOBAL	people_2_person_nid	String	50396
attribute	NC_GLOBAL	people_2_role	String	BCO-DMO Data Manager
attribute	NC_GLOBAL	people_2_role_type	String	related
attribute	NC_GLOBAL	project	String	Seaweed OA Resilience
attribute	NC_GLOBAL	projects_0_acronym	String	Seaweed OA Resilience
attribute	NC_GLOBAL	projects_0_description	String	Benthic macroalgae contribute to intensely productive near shore ecosystems and little is known about the potential effects of ocean acidification on non-calcifying macroalgae. Kübler and Dudgeon will test hypotheses about two macroalgae, Ulva spp. and Plocamium cartilagineum, which, for different reasons, are hypothesized to be more productive and undergo ecological expansions under predicted changes in ocean chemistry. They have designed laboratory culture-based experiments to quantify the scope for response to ocean acidification in Plocamium, which relies solely on diffusive uptake of CO2, and populations of Ulva spp., which have an inducible concentrating mechanism (CCM). The investigators will culture these algae in media equilibrated at 8 different pCO2 levels ranging from 380 to 940 ppm to address three key hypotheses. The first is that macroalgae (such as Plocamium cartilagineum) that are not able to acquire inorganic carbon in changed form will benefit, in terms of photosynthetic and growth rates, from ocean acidification. There is little existing data to support this common assumption. The second hypothesis is that enhanced growth of Ulva sp. under OA will result from the energetic savings from down regulating the CCM, rather than from enhanced photosynthesis per se. Their approach will detect existing genetic variation for adaptive plasticity. The third key hypothesis to be addressed in short-term culture experiments is that there will be a significant interaction between ocean acidification and nitrogen limited growth of Ulva spp., which are indicator species of eutrophication. Kübler and Dudgeon will be able to quantify the individual effects of ocean acidification and nitrogenous nutrient addition on Ulva spp. and also, the synergistic effects, which will inevitably apply in many highly productive, shallow coastal areas. The three hypotheses being addressed have been broadly identified as urgent needs in our growing understanding of the impacts of ocean acidification.
attribute	NC_GLOBAL	projects_0_end_date	String	2016-05
attribute	NC_GLOBAL	projects_0_geolocation	String	Temperate coastal waters of the USA (30 - 45 N latitude, -66 to -88 W and -117 to -125 W longitude)
attribute	NC_GLOBAL	projects_0_name	String	Ocean Acidification: Scope for Resilience to Ocean Acidification in Macroalgae
attribute	NC_GLOBAL	projects_0_project_nid	String	2275
attribute	NC_GLOBAL	projects_0_start_date	String	2013-06
attribute	NC_GLOBAL	publisher_name	String	Biological and Chemical Oceanographic Data Management Office (BCO-DMO)
attribute	NC_GLOBAL	publisher_type	String	institution
attribute	NC_GLOBAL	sourceUrl	String	(local files)
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v55
attribute	NC_GLOBAL	summary	String	This dataset includes photosynthetic pigment concentrations in Plocamium cartilagineum grown under various temperatures and CO2 levels, from July 2014 to February 2015. The parameters reported are: the concentrations of Chlorophyll a, Phycoerythrin, Phycocyanin, Allophycocyanin, and total Phycobiliprotein, and the ratio of total Phycobiliprotein to Chlorophyll A.
attribute	NC_GLOBAL	title	String	[Rapid Light Curves_PAM] - Measurements of fluorescence of photosystem II in Plocamium cartilagineum under various and pCO2 and temperature conditions (Ocean Acidification: Scope for Resilience to Ocean Acidification in Macroalgae)
attribute	NC_GLOBAL	version	String	1
attribute	NC_GLOBAL	xml_source	String	osprey2erddap.update_xml() v1.3
variable	Trial		byte
attribute	Trial	_FillValue	byte	127
attribute	Trial	actual_range	byte	2, 8
attribute	Trial	bcodmo_name	String	replicate
attribute	Trial	description	String	Trial number of the experiment
attribute	Trial	long_name	String	Trial
attribute	Trial	units	String	unitless
variable	Tank_ID		byte
attribute	Tank_ID	_FillValue	byte	127
attribute	Tank_ID	actual_range	byte	0, 9
attribute	Tank_ID	bcodmo_name	String	sample
attribute	Tank_ID	description	String	Identifying number of culture pot
attribute	Tank_ID	long_name	String	Tank ID
attribute	Tank_ID	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P02/current/ACYC/
attribute	Tank_ID	units	String	unitless
variable	pCO2		short
attribute	pCO2	_FillValue	short	32767
attribute	pCO2	actual_range	short	344, 1053
attribute	pCO2	bcodmo_name	String	pCO2
attribute	pCO2	description	String	Partial pressure of CO2 in solution in culture pot
attribute	pCO2	long_name	String	P CO2
attribute	pCO2	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/PCO2C101/
attribute	pCO2	units	String	atm
variable	Temp		byte
attribute	Temp	_FillValue	byte	127
attribute	Temp	actual_range	byte	15, 20
attribute	Temp	bcodmo_name	String	temperature
attribute	Temp	description	String	Temperature of seawater in culture pot
attribute	Temp	long_name	String	Temperature
attribute	Temp	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/TEMPP901/
attribute	Temp	units	String	degrees Celsius (°C)
variable	Plant_ID		float
attribute	Plant_ID	_FillValue	float	NaN
attribute	Plant_ID	actual_range	float	1.1, 15.2
attribute	Plant_ID	bcodmo_name	String	sample
attribute	Plant_ID	description	String	Plant ID number in culture pot
attribute	Plant_ID	long_name	String	Plant ID
attribute	Plant_ID	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P02/current/ACYC/
attribute	Plant_ID	units	String	unitless
variable	ID		String
attribute	ID	bcodmo_name	String	sample
attribute	ID	description	String	Unique identifier for every sample; concatenation of trial_tank ID_plant ID_week
attribute	ID	long_name	String	ID
attribute	ID	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P02/current/ACYC/
attribute	ID	units	String	unitless
variable	Week		byte
attribute	Week	_FillValue	byte	127
attribute	Week	actual_range	byte	0, 4
attribute	Week	bcodmo_name	String	time_point
attribute	Week	description	String	Week number of given trial
attribute	Week	long_name	String	Week
attribute	Week	units	String	unitless
variable	date		String
attribute	date	bcodmo_name	String	date_local
attribute	date	description	String	date of data collection formatted as yyyy-mm-dd
attribute	date	long_name	String	Date
attribute	date	source_name	String	date
attribute	date	time_precision	String	1970-01-01
attribute	date	units	String	unitless
variable	light		short
attribute	light	_FillValue	short	32767
attribute	light	actual_range	short	0, 427
attribute	light	bcodmo_name	String	PAR
attribute	light	description	String	Photosynthetically active radiation (PAR)
attribute	light	long_name	String	Light
attribute	light	units	String	micromole photons/meter^2/second ( µmole photons . m^-2 . s^-1)
variable	F		float
attribute	F	_FillValue	float	NaN
attribute	F	actual_range	float	0.0, 334.0
attribute	F	bcodmo_name	String	fluorescence
attribute	F	description	String	Relative fluorescence of photosystem II
attribute	F	long_name	String	F
attribute	F	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/CPHLPM01/
attribute	F	units	String	unitless
variable	Fm		float
attribute	Fm	_FillValue	float	NaN
attribute	Fm	actual_range	float	0.0, 454.0
attribute	Fm	bcodmo_name	String	fluorescence
attribute	Fm	description	String	Maximum fluorescence
attribute	Fm	long_name	String	FM
attribute	Fm	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/CPHLPM01/
attribute	Fm	units	String	unitless
variable	Yield		float
attribute	Yield	_FillValue	float	NaN
attribute	Yield	actual_range	float	0.0, 1.0
attribute	Yield	bcodmo_name	String	Fv2Fm
attribute	Yield	description	String	Effective (or Optimal if dark-adapted) quantum yield. Calculated as Yield = (Fm - F)/Fm
attribute	Yield	long_name	String	Yield
attribute	Yield	units	String	unitless
variable	rETR		float
attribute	rETR	_FillValue	float	NaN
attribute	rETR	actual_range	float	0.0, 1008.5
attribute	rETR	bcodmo_name	String	unknown
attribute	rETR	description	String	Relative Electron Transport Rate
attribute	rETR	long_name	String	R ETR
attribute	rETR	units	String	unitless
variable	qP		float
attribute	qP	_FillValue	float	NaN
attribute	qP	actual_range	float	0.0, 4.0
attribute	qP	bcodmo_name	String	unknown
attribute	qP	description	String	Photochemical quenching
attribute	qP	long_name	String	Q P
attribute	qP	units	String	unitless
variable	qN		float
attribute	qN	_FillValue	float	NaN
attribute	qN	actual_range	float	0.0, 11.0
attribute	qN	bcodmo_name	String	unknown
attribute	qN	description	String	Non-photochemical quenching expressed as a fraction of difference between Fm and minimum F
attribute	qN	long_name	String	Q N
attribute	qN	units	String	unitless
variable	NPQ		float
attribute	NPQ	_FillValue	float	NaN
attribute	NPQ	actual_range	float	0.0, 28.797
attribute	NPQ	bcodmo_name	String	unknown
attribute	NPQ	description	String	Non-photochemical quenching normalized to Fm measured in the light
attribute	NPQ	long_name	String	NPQ
attribute	NPQ	units	String	unitless

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.