ERDDAP > info > bcodmo_dataset_699469

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
	set	data	graph		files	public	Record of d2H of dinosterol variability in down core lake sediments from Clear Lake, Palau		I   M	background			BCO-DMO	bcodmo_dataset_699469

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,.esriCsv,.geoJson
attribute	NC_GLOBAL	acquisition_description	String	Sampling and analytical procedures: Clear Lake sediments were extracted using a Dionex Accelerated Solvent Extractor (ASE 200), and the resulting total lipid extract was separated into neutral and polar fractions using column chromatography with aminopropyl gel as the stationary phase. The neutral fraction was then separated into hydrocarbon, wax ester, sterol and polar fractions via a silica gel column chromatography. Dinosterol was isolated then from the sterol fraction via reverse phase (RP)- high-performance liquid chromatography (HPLC)\u2028. Instruments: Dinosterol was isolated from the sterol fraction via reverse phase (RP)- high performance liquid chromatography (HPLC). An Agilent 1100 HPLC with an integrated autoinjector, quaternary pump, and fraction collector was coupled to an Agilent 1100 LC/MSD SL mass spectrometer with a multimode source that was operated in positive atmospheric pressure chemical ionization (APCI+) mode. The HPLC method used is outlined in Nelson and Sachs (2013).\u00a0Subsequently to HPLC separation the fraction containing dinosterol was analyzed via GC-MSD to verify sufficient baseline separation. Adjacent HPLC fractions were also analyzed to ensure that no dinosterol eluted into those fractions. After the dinosterol was sufficiently isolated from co-eluting compounds, the sample was injected onto a GC-irms for determination of the d2H of dinosterol.\u00a0 Hydrogen isotope determinations were made using a Finnigan Delta V Plus Isotope Ratio Mass Spectrometer (irMS) coupled to a Thermo Trace GC Ultra with a Varian VF-17ms FactorFour capillary column (60 m x 0.32 mm x 0.25 m) and a pyrolysis reactor. Samples were injected into a split/splitless inlet in splitless mode at 310 C. The oven temperature was ramped from 100 C to 220 C at a rate of 20 C/min, then at 2 C /min up to 325 C where it was held for 17 min. The carrier gas, He, was held constant at 2.6 mL/min. The pyroloysis reactor was maintained at 1400 C. Isotope values, expressed as D values, were calculated in Isodat software relative to VSMOW using a co- injection standard containing nC28 nC32, nC40, and nC44 of known \u22022H values (obtained from Arndt Schimmelmann, Indiana University, Bloomington, IN, USA). The measured isotope values of dinosterol were corrected for the addition of hydrogen atoms (of known D value) that occurred during acetylation. Each sample was analyzed in at least duplicate, and error bars represent standard deviations of replicate measurements.
attribute	NC_GLOBAL	awards_0_award_nid	String	55104
attribute	NC_GLOBAL	awards_0_award_number	String	OCE-1241247
attribute	NC_GLOBAL	awards_0_data_url	String	http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1241247
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	Clear Lake 800-yr reconstruction Record of d2H of dinosterol variability in down core lake sediments PI: Julian P. Sachs (University of Washington) Co-PI: Julie N. Richey (University of Washington) Version: 04 May 2017
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	2017-05-04T19:36:35Z
attribute	NC_GLOBAL	date_modified	String	2019-08-02T19:07:33Z
attribute	NC_GLOBAL	defaultDataQuery	String	&time<now
attribute	NC_GLOBAL	doi	String	10.1575/1912/bco-dmo.699469.1
attribute	NC_GLOBAL	Easternmost_Easting	double	134.3594
attribute	NC_GLOBAL	geospatial_lat_max	double	7.153166667
attribute	NC_GLOBAL	geospatial_lat_min	double	7.153166667
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_max	double	134.3594
attribute	NC_GLOBAL	geospatial_lon_min	double	134.3594
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	infoUrl	String	https://www.bco-dmo.org/dataset/699469
attribute	NC_GLOBAL	institution	String	BCO-DMO
attribute	NC_GLOBAL	instruments_0_acronym	String	IR Mass Spec
attribute	NC_GLOBAL	instruments_0_dataset_instrument_description	String	Hydrogen isotope determinations were made using a Finnigan Delta V Plus Isotope Ratio Mass Spectrometer (irMS) coupled to a Thermo Trace GC Ultra with a Varian VF-17ms FactorFour capillary column (60 m x 0.32 mm x 0.25 m) and a pyrolysis reactor.
attribute	NC_GLOBAL	instruments_0_dataset_instrument_nid	String	699743
attribute	NC_GLOBAL	instruments_0_description	String	The Isotope-ratio Mass Spectrometer is a particular type of mass spectrometer used to measure the relative abundance of isotopes in a given sample (e.g. VG Prism II Isotope Ratio Mass-Spectrometer).
attribute	NC_GLOBAL	instruments_0_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/LAB16/
attribute	NC_GLOBAL	instruments_0_instrument_name	String	Isotope-ratio Mass Spectrometer
attribute	NC_GLOBAL	instruments_0_instrument_nid	String	469
attribute	NC_GLOBAL	instruments_0_supplied_name	String	Finnigan Delta V Plus Isotope Ratio Mass Spectrometer (irMS)
attribute	NC_GLOBAL	instruments_1_acronym	String	HPLC
attribute	NC_GLOBAL	instruments_1_dataset_instrument_description	String	Dinosterol was isolated from the sterol fraction via reverse phase (RP)- high performance liquid chromatography (HPLC). An Agilent 1100 HPLC with an integrated autoinjector, quaternary pump, and fraction collector was coupled to an Agilent 1100 LC/MSD SL mass spectrometer with a multimode source that was operated in positive atmospheric pressure chemical ionization (APCI+) mode.
attribute	NC_GLOBAL	instruments_1_dataset_instrument_nid	String	699741
attribute	NC_GLOBAL	instruments_1_description	String	A High-performance liquid chromatograph (HPLC) is a type of liquid chromatography used to separate compounds that are dissolved in solution. HPLC instruments consist of a reservoir of the mobile phase, a pump, an injector, a separation column, and a detector. Compounds are separated by high pressure pumping of the sample mixture onto a column packed with microspheres coated with the stationary phase. The different components in the mixture pass through the column at different rates due to differences in their partitioning behavior between the mobile liquid phase and the stationary phase.
attribute	NC_GLOBAL	instruments_1_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/LAB11/
attribute	NC_GLOBAL	instruments_1_instrument_name	String	High Performance Liquid Chromatograph
attribute	NC_GLOBAL	instruments_1_instrument_nid	String	506
attribute	NC_GLOBAL	instruments_1_supplied_name	String	high-performance liquid chromatography
attribute	NC_GLOBAL	instruments_2_acronym	String	Mass Spec
attribute	NC_GLOBAL	instruments_2_dataset_instrument_description	String	Dinosterol was isolated from the sterol fraction via reverse phase (RP)- high performance liquid chromatography (HPLC). An Agilent 1100 HPLC with an integrated autoinjector, quaternary pump, and fraction collector was coupled to an Agilent 1100 LC/MSD SL mass spectrometer with a multimode source that was operated in positive atmospheric pressure chemical ionization (APCI+) mode.
attribute	NC_GLOBAL	instruments_2_dataset_instrument_nid	String	699742
attribute	NC_GLOBAL	instruments_2_description	String	General term for instruments used to measure the mass-to-charge ratio of ions; generally used to find the composition of a sample by generating a mass spectrum representing the masses of sample components.
attribute	NC_GLOBAL	instruments_2_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/LAB16/
attribute	NC_GLOBAL	instruments_2_instrument_name	String	Mass Spectrometer
attribute	NC_GLOBAL	instruments_2_instrument_nid	String	685
attribute	NC_GLOBAL	instruments_2_supplied_name	String	Agilent 1100 LC/MSD SL mass spectrometer
attribute	NC_GLOBAL	keywords	String	age, bco, bco-dmo, biological, chemical, core, core_depth, data, dataset, dDdino, dDdino_stdev, ddino, depth, deviation, dmo, erddap, latitude, longitude, management, oceanography, office, preliminary, standard, standard deviation, stdev
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/699469/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/699469
attribute	NC_GLOBAL	Northernmost_Northing	double	7.153166667
attribute	NC_GLOBAL	param_mapping	String	{'699469': {'lat': 'master - latitude', 'lon': 'master - longitude', 'core_depth': 'flag - depth'}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/699469/parameters
attribute	NC_GLOBAL	people_0_affiliation	String	University of Washington
attribute	NC_GLOBAL	people_0_affiliation_acronym	String	UW
attribute	NC_GLOBAL	people_0_person_name	String	Julian P. Sachs
attribute	NC_GLOBAL	people_0_person_nid	String	51578
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	University of Washington
attribute	NC_GLOBAL	people_1_affiliation_acronym	String	UW
attribute	NC_GLOBAL	people_1_person_name	String	Julie N. Richey
attribute	NC_GLOBAL	people_1_person_nid	String	699725
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	Shannon Rauch
attribute	NC_GLOBAL	people_2_person_nid	String	51498
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	PaPaPro
attribute	NC_GLOBAL	projects_0_acronym	String	PaPaPro
attribute	NC_GLOBAL	projects_0_description	String	This project will survey the taxonomic, genetic, and functional diversity of the organisms found in marine lakes, and investigate the processes that cause gains and losses in this biodiversity. Marine lakes formed as melting ice sheets raised sea level after the last glacial maximum and flooded hundreds of inland valleys around the world. Inoculated with marine life from the surrounding sea and then isolated to varying degrees for the next 6,000 to 15,000 years, these marine lakes provide multiple, independent examples of how environments and interactions between species can drive extinction and speciation. Researchers will survey the microbes, algae, invertebrates, and fishes present in 40 marine lakes in Palau and Papua, and study how diversity has changed over time by retrieving the remains of organisms preserved in sediments on the lake bottoms. The project will test whether the number of species, the diversity of functional roles played by organisms, and the genetic diversity within species increase and decrease in parallel; whether certain species can greatly curtail diversity by changing the environment; whether the size of a lake determines its biodiversity; and whether the processes that control diversity in marine organisms are similar to those that operate on land. Because biodiversity underlies the ecosystem services on which society depends, society has a great interest in understanding the processes that generate and retain biodiversity in nature. This project will also help conserve areas of economic importance. Marine lakes in the study region are important for tourism, and researchers will work closely with governmental and non-governmental conservation and education groups and with diving and tourism businesses to raise awareness of the value and threats to marine lakes in Indonesia and Palau.
attribute	NC_GLOBAL	projects_0_end_date	String	2017-12
attribute	NC_GLOBAL	projects_0_geolocation	String	Western Pacific; Palau; Indonesia (West Papua)
attribute	NC_GLOBAL	projects_0_name	String	Do Parallel Patterns Arise from Parallel Processes?
attribute	NC_GLOBAL	projects_0_project_nid	String	2238
attribute	NC_GLOBAL	projects_0_project_website	String	http://marinelakes.ucmerced.edu/
attribute	NC_GLOBAL	projects_0_start_date	String	2013-01
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	Southernmost_Northing	double	7.153166667
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v55
attribute	NC_GLOBAL	subsetVariables	String	location,latitude,longitude
attribute	NC_GLOBAL	summary	String	Record of d2H of dinosterol variability in down core lake sediments from Clear Lake, Palau.
attribute	NC_GLOBAL	title	String	Record of d2H of dinosterol variability in down core lake sediments from Clear Lake, Palau
attribute	NC_GLOBAL	version	String	1
attribute	NC_GLOBAL	Westernmost_Easting	double	134.3594
attribute	NC_GLOBAL	xml_source	String	osprey2erddap.update_xml() v1.3
variable	location		String
attribute	location	bcodmo_name	String	site
attribute	location	description	String	Name of the sampling location
attribute	location	long_name	String	Location
attribute	location	units	String	unitless
variable	latitude		double
attribute	latitude	_CoordinateAxisType	String	Lat
attribute	latitude	_FillValue	double	NaN
attribute	latitude	actual_range	double	7.153166667, 7.153166667
attribute	latitude	axis	String	Y
attribute	latitude	bcodmo_name	String	latitude
attribute	latitude	colorBarMaximum	double	90.0
attribute	latitude	colorBarMinimum	double	-90.0
attribute	latitude	description	String	Latitude of the location
attribute	latitude	ioos_category	String	Location
attribute	latitude	long_name	String	Latitude
attribute	latitude	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P09/current/LATX/
attribute	latitude	standard_name	String	latitude
attribute	latitude	units	String	degrees_north
variable	longitude		double
attribute	longitude	_CoordinateAxisType	String	Lon
attribute	longitude	_FillValue	double	NaN
attribute	longitude	actual_range	double	134.3594, 134.3594
attribute	longitude	axis	String	X
attribute	longitude	bcodmo_name	String	longitude
attribute	longitude	colorBarMaximum	double	180.0
attribute	longitude	colorBarMinimum	double	-180.0
attribute	longitude	description	String	Longitude of the location
attribute	longitude	ioos_category	String	Location
attribute	longitude	long_name	String	Longitude
attribute	longitude	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P09/current/LONX/
attribute	longitude	standard_name	String	longitude
attribute	longitude	units	String	degrees_east
variable	core_depth		double
attribute	core_depth	_FillValue	double	NaN
attribute	core_depth	actual_range	double	0.5, 87.5
attribute	core_depth	bcodmo_name	String	depth_bsf
attribute	core_depth	description	String	Depth below sediment-water interface
attribute	core_depth	long_name	String	Core Depth
attribute	core_depth	units	String	centimeters (cm)
variable	age		short
attribute	age	_FillValue	short	32767
attribute	age	actual_range	short	1284, 2002
attribute	age	bcodmo_name	String	age
attribute	age	description	String	Calendar age of sample in year A.D.
attribute	age	long_name	String	Age
attribute	age	units	String	unitless
variable	dDdino		float
attribute	dDdino	_FillValue	float	NaN
attribute	dDdino	actual_range	float	-317.9, -266.9
attribute	dDdino	bcodmo_name	String	unknown
attribute	dDdino	description	String	d2Hdino: hydrogen isotopic composition of dinosterol
attribute	dDdino	long_name	String	D Ddino
attribute	dDdino	units	String	per mil
variable	dDdino_stdev		float
attribute	dDdino_stdev	_FillValue	float	NaN
attribute	dDdino_stdev	actual_range	float	0.2, 10.7
attribute	dDdino_stdev	bcodmo_name	String	unknown
attribute	dDdino_stdev	description	String	1 sigma standard deviation on d2Hdino
attribute	dDdino_stdev	long_name	String	D Ddino Stdev
attribute	dDdino_stdev	units	String	per mil

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.