ERDDAP > info > bcodmo_dataset_628993

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
	set	data	graph		files	public	[Incubation in diffuse flow vent fluids - Crab Spa] - Results from shipboard high-pressure incubations of diffuse flow vent fluids collected from the Crab Spa and Alvinella sites at East Pacific Rise during the AT26-10 expedition, Jan. 2014 (Microbial Communities at Deep-Sea Vents project) (An Integrated Study of Energy Metabolism, Carbon Fixation, and Colonization Mechanisms in Chemosynthetic Microbial Communities at Deep-Sea Vents)		I   M	background			BCO-DMO	bcodmo_dataset_628993

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	From AT26-10\u00a0cruise report (01/29/2014): DOB: An Integrated Study of Energy Metabolism, Carbon Fixation, and Colonization Mechanisms in Chemosynthetic Microbial Communities at Deep-Sea Vents Cruise Report by the CIW research team: Dr. Ileana Perez-Rodriguez, Mr. Matt Rawls and Dr. Dionysis I. Foustoukos The CIW team was responsible for the shipboard continuous culturing incubations of vent fluids collected from Crab Spa and Tica hot springs during the AT26-10 expedition at 9oN EPR by utilizing our high-pressure bioreactor (Fig. 1). This was accomplished through a collaborative effort with Jeff Seewald and Sean Sylva (WHOI), who deployed isobaric gas-tight samplers (IGTs) to collect hydrothermal vent fluids at the diffuse flow sites. Experiments were designed to study the cycling to N through the metabolic processes of denitrification and dissimilatory nitrate reduction to ammonia (DNRA) under in-situ deep-sea vent temperature and pressure conditions. We studied the evolution of nitrate reducing microorganisms at mesophilic (30oC) and thermophilic (50oC) conditions at pressures ranging from 5 to 250 bar. Vent fluids (16 IGTs) were delivered in the bioreactor and homogeneously mixed with aqueous media solution enriched in dissolved nitrate, hydrogen and 13C labeled bicarbonate to facilitate the growth of nitrate reducing microorganisms (Fig. 2). The two distinct sets of experiments were lasted for 356 and 100 hours. In short, experimental results constrained the function and metabolic rates of the denitrifying microbial communities in the Crab Spa fluids, while DNRA metabolic pathways were identified for the populations residing in the moderate temperature vent fluids (60oC) of the Alvinella colony at Tica. During the course of the experiments we monitored the growth of deep-sea microbial communities by measuring the concentrations of dissolved aqueous species directly involved in nitrate based metabolism, such as NO3, NH4, H2 and H2S. We also monitored cell densities by utilizing an epi-fluorescence microscope (Sievert, WHOI). Dissolved gas and NH4+ concentrations were attained by gas and ion chromatography (Seewald - Sylva, WHOI). Subsamples were also collected for a number of offshore analysis to determine: i) the 15N/14N isotope composition of NO3-,/NH4+ and constrain kinetic isotope effects associated with denitrification/DNRA (Perez-Rodriguez, CIW), ii) to study the rates of autotrophic carbon fixation by NanoSIMS (Musat, UFZ), iii) to perform single cell genomics on the microbial populations grown in the bioreactor (Ramunas, Bigelow) and (iv) to isolate and characterize novel microogranisms from the communities cultured in our experiments (Perez- Rodriguez, CIW and Vetriani, Rutgers).
attribute	NC_GLOBAL	awards_0_award_nid	String	54989
attribute	NC_GLOBAL	awards_0_award_number	String	OCE-1136608
attribute	NC_GLOBAL	awards_0_data_url	String	http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1136608
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	Microbial incubations in diffuse flow vent fluids D. Foustoukos version: 2017-02-07 (added cell concentration and d15N data) replaces version: 2015-12-17
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	2015-12-16T19:28:02Z
attribute	NC_GLOBAL	date_modified	String	2017-02-13T20:07:38Z
attribute	NC_GLOBAL	defaultDataQuery	String	&time<now
attribute	NC_GLOBAL	doi	String	10.1575/1912/bco-dmo.682108
attribute	NC_GLOBAL	infoUrl	String	https://www.bco-dmo.org/dataset/628993
attribute	NC_GLOBAL	institution	String	BCO-DMO
attribute	NC_GLOBAL	instruments_0_dataset_instrument_description	String	Olympus BX61 microscope with a UPlanF1 100x  (numerical aperture, 1.3) oil immersion objective
attribute	NC_GLOBAL	instruments_0_dataset_instrument_nid	String	629004
attribute	NC_GLOBAL	instruments_0_description	String	Instruments that generate enlarged images of samples using the phenomena of reflection and absorption of visible light. Includes conventional and inverted instruments. Also called a "light microscope".
attribute	NC_GLOBAL	instruments_0_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/LAB05/
attribute	NC_GLOBAL	instruments_0_instrument_name	String	Microscope-Optical
attribute	NC_GLOBAL	instruments_0_instrument_nid	String	708
attribute	NC_GLOBAL	instruments_1_dataset_instrument_description	String	JSM-6500F field emission scanning electron microscope (JEOL)
attribute	NC_GLOBAL	instruments_1_dataset_instrument_nid	String	629005
attribute	NC_GLOBAL	instruments_1_description	String	Instruments that generate enlarged images of samples using the phenomena of reflection and absorption of electrons behaving as waves.
attribute	NC_GLOBAL	instruments_1_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/LAB07/
attribute	NC_GLOBAL	instruments_1_instrument_name	String	Microscope-Electron
attribute	NC_GLOBAL	instruments_1_instrument_nid	String	709
attribute	NC_GLOBAL	instruments_2_acronym	String	IGT Sampler
attribute	NC_GLOBAL	instruments_2_dataset_instrument_nid	String	629000
attribute	NC_GLOBAL	instruments_2_description	String	Isobaric Gas Tight (IGT) samplers, designed and built by scientists and engineers at WHOI, are titanium instruments designed to be used with deep submergence vehicles to sample corrosive hydrothermal vent fluids at high temperature and high pressure. The IGT prevents the sampled fluid from degassing as pressure decreases during the vehicle’s ascent to the surface.
attribute	NC_GLOBAL	instruments_2_instrument_name	String	Isobaric Gas-Tight Sampler
attribute	NC_GLOBAL	instruments_2_instrument_nid	String	529049
attribute	NC_GLOBAL	instruments_2_supplied_name	String	IGT Sampler
attribute	NC_GLOBAL	instruments_3_dataset_instrument_description	String	The integrated system allows for the culturing of microorganisms under hydrostatic pressures from 0.1 to 69 MPa (and up to 138 MPa with ongoing developments) and at temperatures ranging from 25 to 120°C. For full description, see Foustoukos and Perez-Rodriguez (2015), Applied and Environmental Microbiology, 81, 6850
attribute	NC_GLOBAL	instruments_3_dataset_instrument_nid	String	629003
attribute	NC_GLOBAL	instruments_3_description	String	A device mounted on a ship that holds water samples under conditions of controlled temperature or controlled temperature and illumination.
attribute	NC_GLOBAL	instruments_3_instrument_name	String	Shipboard Incubator
attribute	NC_GLOBAL	instruments_3_instrument_nid	String	629001
attribute	NC_GLOBAL	instruments_3_supplied_name	String	custom high pressure bioreactor
attribute	NC_GLOBAL	keywords	String	ammonia, ammonium, bco, bco-dmo, biological, biomass, cell, cell_concentration, ch4, CH4_uM, chemical, chemistry, concentration, d15, d15N_Biomass_ppt, d15N_NO3_ppt, data, dataset, date, date_end, description, dmo, earth, Earth Science > Oceans > Ocean Chemistry > Ammonia, Earth Science > Oceans > Ocean Chemistry > Nitrate, Earth Science > Oceans > Ocean Chemistry > pH, elapsed, end, erddap, flow, flow_rate, H2_uM, H2S_uM, management, mole, mole_concentration_of_ammonium_in_sea_water, mole_concentration_of_nitrate_in_sea_water, n02, nh4, NH4_uM, nitrate, no3, NO3_uM, ocean, oceanography, oceans, office, ppt, preliminary, press, rate, reported, scale, science, sea, sea_water_ph_reported_on_total_scale, seawater, start, temperature, time, time_elapsed, total, u, water
attribute	NC_GLOBAL	keywords_vocabulary	String	GCMD Science Keywords
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/628993/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/628993
attribute	NC_GLOBAL	param_mapping	String	{'628993': {}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/628993/parameters
attribute	NC_GLOBAL	people_0_affiliation	String	Carnegie Institution for Science
attribute	NC_GLOBAL	people_0_affiliation_acronym	String	CIS
attribute	NC_GLOBAL	people_0_person_name	String	Dionysis Foustoukos
attribute	NC_GLOBAL	people_0_person_nid	String	51518
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	Woods Hole Oceanographic Institution
attribute	NC_GLOBAL	people_1_affiliation_acronym	String	WHOI BCO-DMO
attribute	NC_GLOBAL	people_1_person_name	String	Nancy Copley
attribute	NC_GLOBAL	people_1_person_nid	String	50396
attribute	NC_GLOBAL	people_1_role	String	BCO-DMO Data Manager
attribute	NC_GLOBAL	people_1_role_type	String	related
attribute	NC_GLOBAL	project	String	Microbial Communities at Deep-Sea Vents
attribute	NC_GLOBAL	projects_0_acronym	String	Microbial Communities at Deep-Sea Vents
attribute	NC_GLOBAL	projects_0_description	String	Deep-sea hydrothermal vents, first discovered in 1977, are poster child ecosystems where microbial chemosynthesis rather than photosynthesis is the primary source of organic carbon. Significant gaps remain in our understanding of the underlying microbiology and biogeochemistry of these fascinating ecosystems. Missing are the identification of specific microorganisms mediating critical reactions in various geothermal systems, metabolic pathways used by the microbes, rates of the catalyzed reactions, amounts of organic carbon being produced, and the larger role of these ecosystems in global biogeochemical cycles. To fill these gaps, the investigators will conduct a 3-year interdisciplinary, international hypothesis-driven research program to understand microbial processes and their quantitative importance at deep-sea vents. Specifically, the investigators will address the following objectives: 1. Determine key relationships between the taxonomic, genetic and functional diversity, as well as the mechanisms of energy and carbon transfer, in deep-sea hydrothermal vent microbial communities. 2. Identify the predominant metabolic pathways and thus the main energy sources driving chemoautotrophic production in high and low temperature diffuse flow vents. 3. Determine energy conservation efficiency and rates of aerobic and anaerobic chemosynthetic primary productivity in high and low temperature diffuse flow vents. 4. Determine gene expression patterns in diffuse-flow vent microbial communities during attachment to substrates and the development of biofilms. Integration: To address these objectives and to characterize the complexity of microbially-catalyzed processes at deep-sea vents at a qualitatively new level, we will pursue an integrated approach that couples an assessment of taxonomic diversity using cultivation-dependent and -independent approaches with methodologies that address genetic diversity, including a) metagenomics (genetic potential and diversity of community), b) single cell genomics (genetic potential and diversity of uncultured single cells), c) meta-transcriptomics and -proteomics (identification and function of active community members, realized potential of the community). To assess function and response to the environment, these approaches will be combined with 1) measurement of in situ rates of chemoautotrophic production, 2) geochemical characterization of microbial habitats, and 3) shipboard incubations under simulated in situ conditions (hypothesis testing under controlled physicochemical conditions). Network approaches and mathematical simulation will be used to reconstruct the metabolic network of the natural communities. A 3-day long project meeting towards the end of the second year will take place in Woods Hole. This Data Integration and Synthesis meeting will allow for progress reports and presentations from each PI, postdoc, and/or student, with the aim of synthesizing data generated to facilitate the preparation of manuscripts. Intellectual Merit. Combining the community expression profile with diversity and metagenomic analyses as well as process and habitat characterization will be unique to hydrothermal vent microbiology. The approach will provide new insights into the functioning of deep-sea vent microbial communities and the constraints regulating the interactions between the microbes and their abiotic and biotic environment, ultimately enabling us to put these systems into a quantitative framework and thus a larger global context. Broader Impacts. This is an interdisciplinary and collaborative effort between 4 US and 4 foreign institutions, creating unique opportunities for networking and fostering international collaborations. This will also benefit the involved students (2 graduate, several undergraduate) and 2 postdoctoral associates. This project will directly contribute to many educational and public outreach activities of the involved PIs, including the WHOI Dive & Discover program; single cell genomics workshops and Cafe Scientifique (Bigelow); REU (WHOI, Bigelow, CIW); COSEE and RIOS (Rutgers), and others. The proposed research fits with the focus of a number of multidisciplinary and international initiatives, in which PIs are active members (SCOR working group on Hydrothermal energy and the ocean carbon cycle, http://www.scorint. org/Working_Groups/wg135.htm; Deep Carbon Observatory at CIW, https://dco.gl.ciw.edu/; Global Biogeochemical Flux (GBF) component of the Ocean Observatories Initiative (OOI), https://www.whoi.edu/GBF-OOI/page.do?pid=41475)
attribute	NC_GLOBAL	projects_0_end_date	String	2014-09
attribute	NC_GLOBAL	projects_0_name	String	An Integrated Study of Energy Metabolism, Carbon Fixation, and Colonization Mechanisms in Chemosynthetic Microbial Communities at Deep-Sea Vents
attribute	NC_GLOBAL	projects_0_project_nid	String	2216
attribute	NC_GLOBAL	projects_0_start_date	String	2011-10
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	subsetVariables	String	flow_rate
attribute	NC_GLOBAL	summary	String	This dataset includes results from shipboard high-pressure incubations of diffuse flow vent fluids collected from the Crab Spa (9.8398\u00ba N, 104.2913\u00ba W) and Alvinella (9.8398\u00ba N, 104.2915\u00ba W) sites at East Pacific Rise during the AT26-10 oceanographic expedition in January 2014. Reported parameters include dates and time elapsed, flow rate, temperature, pressure, and pH, and concentrations of NO3, NH4, H2, H2S, CH4. Vent fluids used in shipboard incubations were corrected from diffuse flow vent sites at the East Pacific Rise (2503 m): Crab Spa (9.8398\u00ba N, 104.2913\u00ba W) and Alvinella (9.8398\u00ba N, 104.2915\u00ba W) (see description in McNichol et al. [2016]). Fluids were collected using isobaric gas-tight samplers [Seewald et al., 2002] prior to their transfer to the shipboard continuous culture system [Foustoukos and Perez-Rodriguez, 2015]. Here, high-pressure incubations (250 bars) were conducted at mesophilic (30 \u00baC) and thermophilic (50 \u00baC) conditions to constrain the function and metabolic rates of denitrifying and DNRA microbial communities residing at Crab Spa and Alvinella, respectively. To enhance the activity of nitrate- respiring anaerobic bacteria, an NO3- (5 mm) and H2(aq) (1.30 mM)-enriched medium was introduced in the high-pressure incubations under strictly anaerobic conditions. Dissolved HCO3- (7.3 mm, 13C labeled) was used as added carbon source. Vent fluids were introduced at a flow rate of 0.042 mL/min, while growth medium was added at a rate of 0.0042 mL/min. The two sets of experiments were performed for 356 (Crab Spa) and 50 hours (Alvinella). Direct cell counts were conducted by staining cells with 0.1% acridine orange and counting them with a fluorescence microscope. 15N/14N isotopic analysis of the NO3-, NH4+ and biomass were conducted with a Thermo Scientific Delta VPlus mass spectrometer and CE Instruments NA 2500 series elemental analyzer (EA). References: Foustoukos, D., and I. Perez-Rodriguez (2015), A continuous culture system for assessing microbial activities in the piezosphere, Applied and Environmental Microbiology, 81(19), 6850-6856. McNichol, J., S. P. Sylva, F. Thomas, C. D. Taylor, S. M. Sievert, and J. S. Seewald (2016), Assessing microbial processes in deep-sea hydrothermal systems by incubation at in situ temperature and pressure, Deep Sea Research Part I: Oceanographic Research Papers, 115, 221-232. Seewald, J. S., K. W. Doherty, T. R. Hammar, and S. P. Liberatore (2002), A new gas-tight isobaric sampler for hydrothermal fluids, Deep-Sea Research, Part I: Oceanographic Research Papers, 49(1), 189-196.
attribute	NC_GLOBAL	title	String	[Incubation in diffuse flow vent fluids - Crab Spa] - Results from shipboard high-pressure incubations of diffuse flow vent fluids collected from the Crab Spa and Alvinella sites at East Pacific Rise during the AT26-10 expedition, Jan. 2014 (Microbial Communities at Deep-Sea Vents project) (An Integrated Study of Energy Metabolism, Carbon Fixation, and Colonization Mechanisms in Chemosynthetic Microbial Communities at Deep-Sea Vents)
attribute	NC_GLOBAL	version	String	2
attribute	NC_GLOBAL	xml_source	String	osprey2erddap.update_xml() v1.3
variable	description		String
attribute	description	bcodmo_name	String	exp_id
attribute	description	description	String	description of experimental incubation
attribute	description	long_name	String	Description
attribute	description	units	String	unitless
variable	date_start		String
attribute	date_start	bcodmo_name	String	date_start
attribute	date_start	description	String	start date of incubation in yyyy-mm-dd format
attribute	date_start	long_name	String	Date Start
attribute	date_start	source_name	String	date_start
attribute	date_start	time_precision	String	1970-01-01
attribute	date_start	units	String	unitless
variable	date_end		String
attribute	date_end	bcodmo_name	String	date_end
attribute	date_end	description	String	end date of incubation in yyyy-mm-dd format
attribute	date_end	long_name	String	Date End
attribute	date_end	time_precision	String	1970-01-01
attribute	date_end	units	String	unitless
variable	flow_rate		float
attribute	flow_rate	_FillValue	float	NaN
attribute	flow_rate	actual_range	float	0.042, 0.042
attribute	flow_rate	bcodmo_name	String	unknown
attribute	flow_rate	description	String	flow rate
attribute	flow_rate	long_name	String	Flow Rate
attribute	flow_rate	units	String	milliliters/minute
variable	temp		byte
attribute	temp	_FillValue	byte	127
attribute	temp	actual_range	byte	30, 50
attribute	temp	bcodmo_name	String	temperature
attribute	temp	description	String	temperature
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
variable	press		byte
attribute	press	_FillValue	byte	127
attribute	press	actual_range	byte	5, 25
attribute	press	bcodmo_name	String	pressure
attribute	press	description	String	pressure
attribute	press	long_name	String	Press
attribute	press	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/PRESPR01/
attribute	press	units	String	MegaPascals
variable	time_elapsed		short
attribute	time_elapsed	_FillValue	short	32767
attribute	time_elapsed	actual_range	short	0, 356
attribute	time_elapsed	bcodmo_name	String	time_elapsed
attribute	time_elapsed	description	String	time since start of incubation
attribute	time_elapsed	long_name	String	Time Elapsed
attribute	time_elapsed	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/ELTMZZZZ/
attribute	time_elapsed	units	String	hours
variable	cell_concentration		int
attribute	cell_concentration	_FillValue	int	2147483647
attribute	cell_concentration	actual_range	int	660000, 15500000
attribute	cell_concentration	bcodmo_name	String	cell_concentration
attribute	cell_concentration	description	String	cell_concentration
attribute	cell_concentration	long_name	String	Cell Concentration
attribute	cell_concentration	units	String	unknown
variable	NO3_uM		float
attribute	NO3_uM	_FillValue	float	NaN
attribute	NO3_uM	actual_range	float	3.3, 1568.0
attribute	NO3_uM	bcodmo_name	String	NO3
attribute	NO3_uM	colorBarMaximum	double	50.0
attribute	NO3_uM	colorBarMinimum	double	0.0
attribute	NO3_uM	description	String	nitrate concentration
attribute	NO3_uM	long_name	String	Mole Concentration Of Nitrate In Sea Water
attribute	NO3_uM	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/NTRAIGGS/
attribute	NO3_uM	units	String	umoles/kgr
variable	NH4_uM		float
attribute	NH4_uM	_FillValue	float	NaN
attribute	NH4_uM	actual_range	float	1.4, 248.0
attribute	NH4_uM	bcodmo_name	String	Ammonium
attribute	NH4_uM	colorBarMaximum	double	5.0
attribute	NH4_uM	colorBarMinimum	double	0.0
attribute	NH4_uM	description	String	ammonium concentration
attribute	NH4_uM	long_name	String	Mole Concentration Of Ammonium In Sea Water
attribute	NH4_uM	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/AMONAAZX/
attribute	NH4_uM	units	String	umoles/kgr
variable	H2_uM		float
attribute	H2_uM	_FillValue	float	NaN
attribute	H2_uM	actual_range	float	0.01, 122.0
attribute	H2_uM	bcodmo_name	String	unknown
attribute	H2_uM	description	String	hydrogen concentration
attribute	H2_uM	long_name	String	H2 U M
attribute	H2_uM	units	String	umoles/kgr
variable	H2S_uM		float
attribute	H2S_uM	_FillValue	float	NaN
attribute	H2S_uM	actual_range	float	0.13, 666.0
attribute	H2S_uM	bcodmo_name	String	sulfide
attribute	H2S_uM	description	String	hydrogen sulfide concentration
attribute	H2S_uM	long_name	String	H2 S U M
attribute	H2S_uM	units	String	umoles/kgr
variable	CH4_uM		float
attribute	CH4_uM	_FillValue	float	NaN
attribute	CH4_uM	actual_range	float	3.8, 14.4
attribute	CH4_uM	bcodmo_name	String	unknown
attribute	CH4_uM	description	String	methane concentration
attribute	CH4_uM	long_name	String	CH4 U M
attribute	CH4_uM	units	String	umoles/kgr
variable	pH		float
attribute	pH	_FillValue	float	NaN
attribute	pH	actual_range	float	5.5, 7.1
attribute	pH	bcodmo_name	String	pH
attribute	pH	colorBarMaximum	double	9.0
attribute	pH	colorBarMinimum	double	7.0
attribute	pH	description	String	pH at 25 C
attribute	pH	long_name	String	Sea Water Ph Reported On Total Scale
attribute	pH	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/PHXXZZXX/
attribute	pH	units	String	unitless
variable	d15N_NO3_ppt		float
attribute	d15N_NO3_ppt	_FillValue	float	NaN
attribute	d15N_NO3_ppt	actual_range	float	-6.5, 11.8
attribute	d15N_NO3_ppt	bcodmo_name	String	d15N
attribute	d15N_NO3_ppt	colorBarMaximum	double	50.0
attribute	d15N_NO3_ppt	colorBarMinimum	double	0.0
attribute	d15N_NO3_ppt	description	String	d15N_NO3_ppt
attribute	d15N_NO3_ppt	long_name	String	Mole Concentration Of Nitrate In Sea Water
attribute	d15N_NO3_ppt	units	String	unknown
variable	d15N_Biomass_ppt		float
attribute	d15N_Biomass_ppt	_FillValue	float	NaN
attribute	d15N_Biomass_ppt	actual_range	float	-0.6, -0.5
attribute	d15N_Biomass_ppt	bcodmo_name	String	d15N
attribute	d15N_Biomass_ppt	description	String	d15N_Biomass_ppt
attribute	d15N_Biomass_ppt	long_name	String	D15 N Biomass Ppt
attribute	d15N_Biomass_ppt	units	String	unknown

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.