ERDDAP > info > bcodmo_dataset_732625

Grid DAP Data	Sub- set	Table DAP Data	Make A Graph	W M S	Source Data Files	Acces- sible	Title	Sum- mary	ISO, Metadata	Back- ground Info	RSS	E mail	Institution	Dataset ID
		data	graph		files	public	Rates of photosynthesis and respiration by Ulva exposed to different average and variability of pCO2 (Seaweed OA Resilience project)		I   M	background			BCO-DMO	bcodmo_dataset_732625

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	Measurements of photosynthesis and respiration of Ulva lactuca occurred at the end of 3 weeks of acclimation to various levels of ocean acidification at 15\u00b0C. Small circular sections of U. lactuca thalli used for measurements were sampled with a cork borer the evening before measurement and returned to culture conditions overnight to allow for wound healing. Plant sections used to estimate rates of photosynthesis and respiration from oxygen exchange measurements were placed in small white, mesh threaded bags designed to fit the diameter of the cuvette chamber so that the plant material was oriented perpendicularly to the light source provided in the Qubit Systems Dissolved Oxygen package. Prior to introducing plants to the cuvette chamber, oxygen exchange between the stirred seawater and electrode system (i.e., oxygen consumption by the electrode) was monitored to adjust for its effect on subsequent measurements in the presence of plant material. Sections were transferred to the cuvette containing a magnetic stirring bar and 3 ml of seawater corresponding to the average pCO2 level in their particular culture pot and placed in darkness for 10-15 minutes prior to beginning measurement. Once measurements began, output of oxygen exchange was monitored until a steady state of oxygen exchange was attained (typically within 10 minutes) in either darkness or light. Photosynthesis and respiration were measured at 15\u00b0C and ~550, and 0, \u00b5mole photons m-2 s-1, respectively; the same temperature and light conditions as in growth culture. Respiration was measured both following a \u226510 minute acclimation period in darkness prior to light exposure (dark respiration) and again in darkness immediately following exposure to the saturating light intensity (as an estimate of respiration that occurs in the light). Following these measurements in seawater at their culture pCO2 level, the seawater in the cuvette was replaced with standard air-saturated seawater at 15\u00b0C and the measurement process described above was repeated for measurements of respiration in the dark and \u2018light\u2019 and photosynthesis. After measurements of gas exchange, the mass of plant tissue was measured on an analytical balance. Note: Trial 1 was a pilot test of culture system and methodological procedures so was not used for data collection.
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	Ulva_PS_Resp_Cult_AirSat - Ulva Rates of photosynthesis and respiration exposed to different average and variability of pCO2 PI's: J. Kubler, S. Dudgeon (CSU-Northridge) version: 2018-03-26
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	2018-03-28T20:40:42Z
attribute	NC_GLOBAL	date_modified	String	2019-06-03T17:29:10Z
attribute	NC_GLOBAL	defaultDataQuery	String	&time<now
attribute	NC_GLOBAL	doi	String	10.1575/1912/bco-dmo.732625.1
attribute	NC_GLOBAL	infoUrl	String	https://www.bco-dmo.org/dataset/732625
attribute	NC_GLOBAL	institution	String	BCO-DMO
attribute	NC_GLOBAL	instruments_0_acronym	String	Dissolved Oxygen Sensor
attribute	NC_GLOBAL	instruments_0_dataset_instrument_description	String	Used to measure oxygen, photosynthesis, and respiration.http://www.qubitbiology.com/ox1lp-dissolved-oxygen/
attribute	NC_GLOBAL	instruments_0_dataset_instrument_nid	String	732633
attribute	NC_GLOBAL	instruments_0_description	String	An electronic device that measures the proportion of oxygen (O2) in the gas or liquid being analyzed
attribute	NC_GLOBAL	instruments_0_instrument_name	String	Dissolved Oxygen Sensor
attribute	NC_GLOBAL	instruments_0_instrument_nid	String	705
attribute	NC_GLOBAL	instruments_0_supplied_name	String	Qubit Systems Dissolved Oxygen package (Q-box OX1LP)
attribute	NC_GLOBAL	instruments_1_acronym	String	Scale
attribute	NC_GLOBAL	instruments_1_dataset_instrument_nid	String	732631
attribute	NC_GLOBAL	instruments_1_description	String	An instrument used to measure weight or mass.
attribute	NC_GLOBAL	instruments_1_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/LAB13/
attribute	NC_GLOBAL	instruments_1_instrument_name	String	Scale
attribute	NC_GLOBAL	instruments_1_instrument_nid	String	714
attribute	NC_GLOBAL	instruments_1_supplied_name	String	Mettler Toledo AG204 Delta Range Analytical Balance
attribute	NC_GLOBAL	keywords	String	average, bco, bco-dmo, biological, carbon, carbon dioxide, chemical, co2, data, dataset, dioxide, dmo, dresp, DRespA, DRespC, erddap, fresh, Fresh_Weight, label, lresp, LRespA, LRespC, management, oceanography, off1, Off1A, Off1C, off2, Off2A, Off2C, office, OnA, OnC, pCO2_avg, pCO2_sd, pmax, PmaxA, PmaxC, preliminary, weight
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/732625/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/732625
attribute	NC_GLOBAL	param_mapping	String	{'732625': {}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/732625/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 rates of photosynthesis and respiration by Ulva during culture experiments grown at 15 degrees C under various pCO2 levels, during May through July 2015.
attribute	NC_GLOBAL	title	String	Rates of photosynthesis and respiration by Ulva exposed to different average and variability of pCO2 (Seaweed OA Resilience project)
attribute	NC_GLOBAL	version	String	1
attribute	NC_GLOBAL	xml_source	String	osprey2erddap.update_xml() v1.3
variable	Label		String
attribute	Label	bcodmo_name	String	sample
attribute	Label	description	String	sample identifier formatted as: trial-culture pot.plant replicate numbers
attribute	Label	long_name	String	Label
attribute	Label	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P02/current/ACYC/
attribute	Label	units	String	unitless
variable	pCO2_avg		short
attribute	pCO2_avg	_FillValue	short	32767
attribute	pCO2_avg	actual_range	short	248, 962
attribute	pCO2_avg	bcodmo_name	String	pCO2
attribute	pCO2_avg	description	String	Average pCO2 partial pressure in seawater tanks
attribute	pCO2_avg	long_name	String	P CO2 Avg
attribute	pCO2_avg	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/PCO2C101/
attribute	pCO2_avg	units	String	microatmospheres (µatm)
variable	pCO2_sd		float
attribute	pCO2_sd	_FillValue	float	NaN
attribute	pCO2_sd	actual_range	float	36.22, 1827.8
attribute	pCO2_sd	bcodmo_name	String	pCO2
attribute	pCO2_sd	colorBarMaximum	double	50.0
attribute	pCO2_sd	colorBarMinimum	double	0.0
attribute	pCO2_sd	description	String	Variability of pCO2 partial pressure - standard deviation
attribute	pCO2_sd	long_name	String	P CO2 Sd
attribute	pCO2_sd	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/PCO2C101/
attribute	pCO2_sd	units	String	microatmospheres (µatm)
variable	Off1C		float
attribute	Off1C	_FillValue	float	NaN
attribute	Off1C	actual_range	float	-0.0026844, -2.7471E-5
attribute	Off1C	bcodmo_name	String	respiration
attribute	Off1C	description	String	slope of oxygen exchange during first dark period in pCO2 culture seawater
attribute	Off1C	long_name	String	Off1 C
attribute	Off1C	units	String	milligrams O2/liter/second (mg L-1 s-1)
variable	OnC		float
attribute	OnC	_FillValue	float	NaN
attribute	OnC	actual_range	float	-5.5738E-4, 0.008294
attribute	OnC	bcodmo_name	String	respiration
attribute	OnC	description	String	slope of oxygen exchange during light period in pCO2 culture seawater
attribute	OnC	long_name	String	On C
attribute	OnC	units	String	milligrams O2/liter/second (mg L-1 s-1)
variable	Off2C		float
attribute	Off2C	_FillValue	float	NaN
attribute	Off2C	actual_range	float	-0.0020771, -3.3332E-4
attribute	Off2C	bcodmo_name	String	respiration
attribute	Off2C	description	String	slope of oxygen exchange during second dark period in pCO2 culture seawater
attribute	Off2C	long_name	String	Off2 C
attribute	Off2C	units	String	milligrams O2/liter/second (mg L-1 s-1)
variable	Off1A		float
attribute	Off1A	_FillValue	float	NaN
attribute	Off1A	actual_range	float	-0.0035805, -2.8366E-4
attribute	Off1A	bcodmo_name	String	respiration
attribute	Off1A	description	String	slope of oxygen exchange during first dark period in aerated standard seawater
attribute	Off1A	long_name	String	Off1 A
attribute	Off1A	units	String	milligrams O2/liter/second (mg L-1 s-1)
variable	OnA		float
attribute	OnA	_FillValue	float	NaN
attribute	OnA	actual_range	float	-1.71393E-4, 0.0070203
attribute	OnA	bcodmo_name	String	respiration
attribute	OnA	description	String	slope of oxygen exchange during light period in aerated standard seawater
attribute	OnA	long_name	String	On A
attribute	OnA	units	String	milligrams O2/liter/second (mg L-1 s-1)
variable	Off2A		float
attribute	Off2A	_FillValue	float	NaN
attribute	Off2A	actual_range	float	-0.0015834, -2.3486E-4
attribute	Off2A	bcodmo_name	String	respiration
attribute	Off2A	description	String	slope of oxygen exchange during second dark period in aerated standard seawater
attribute	Off2A	long_name	String	Off2 A
attribute	Off2A	units	String	milligrams O2/liter/second (mg L-1 s-1)
variable	Fresh_Weight		float
attribute	Fresh_Weight	_FillValue	float	NaN
attribute	Fresh_Weight	actual_range	float	0.0124, 0.365
attribute	Fresh_Weight	bcodmo_name	String	mass
attribute	Fresh_Weight	description	String	Mass of tissue sample
attribute	Fresh_Weight	long_name	String	Fresh Weight
attribute	Fresh_Weight	units	String	grams
variable	DRespC		double
attribute	DRespC	_FillValue	double	NaN
attribute	DRespC	actual_range	double	-3.375149402, -0.040398529
attribute	DRespC	bcodmo_name	String	respiration
attribute	DRespC	description	String	Dark respiration rate during first dark period in pCO2 culture seawater
attribute	DRespC	long_name	String	DResp C
attribute	DRespC	units	String	mol O2/g/min NA
variable	PmaxC		double
attribute	PmaxC	_FillValue	double	NaN
attribute	PmaxC	actual_range	double	-0.687557068, 8.886336207
attribute	PmaxC	bcodmo_name	String	Pmax
attribute	PmaxC	description	String	Maximum rate of photosynthesis in pCO2 culture seawater
attribute	PmaxC	long_name	String	Pmax C
attribute	PmaxC	units	String	mol O2/g/min NA
variable	LRespC		double
attribute	LRespC	_FillValue	double	NaN
attribute	LRespC	actual_range	double	-3.103237052, -0.164494121
attribute	LRespC	bcodmo_name	String	respiration
attribute	LRespC	description	String	Estimated respiration in the light in pCO2 culture seawater
attribute	LRespC	long_name	String	LResp C
attribute	LRespC	units	String	mol O2/g/min NA
variable	DRespA		double
attribute	DRespA	_FillValue	double	NaN
attribute	DRespA	actual_range	double	-3.323483911, -0.152730795
attribute	DRespA	bcodmo_name	String	respiration
attribute	DRespA	description	String	Dark respiration rate during first dark period in aerated standard seawater
attribute	DRespA	long_name	String	DResp A
attribute	DRespA	units	String	mol O2/g/min NA
variable	PmaxA		double
attribute	PmaxA	_FillValue	double	NaN
attribute	PmaxA	actual_range	double	-0.211422715, 9.567512376
attribute	PmaxA	bcodmo_name	String	Pmax
attribute	PmaxA	description	String	Maximum rate of photosynthesis in aerated standard seawater
attribute	PmaxA	long_name	String	Pmax A
attribute	PmaxA	units	String	mol O2/g/min NA
variable	LRespA		double
attribute	LRespA	_FillValue	double	NaN
attribute	LRespA	actual_range	double	-1.657299919, -0.15860043
attribute	LRespA	bcodmo_name	String	respiration
attribute	LRespA	description	String	Estimated respiration in the light in aerated standard seawater
attribute	LRespA	long_name	String	LResp A
attribute	LRespA	units	String	mol O2/g/min NA

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.