ERDDAP > info > bcodmo_dataset_722433

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	Open Mesocosm Oyster 15N2 and N2O		I   M	background			BCO-DMO	bcodmo_dataset_722433

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	15N labeled phytoplankton was continuously pumped for three days into 30.5 cm diameter mesocosms containing\u00a0 10 cm of sediment and 20 liters of overlying water. Three mesocosms contained oysters twelve 7-cm long oysters (O1, O2, O2) and three mesocosms had no oysters and served as controls (C1,C2,C3). Mesoscosms were flow through with a 0.3 day residence time and open to the atmosphere. N2O and\u00a015N2\u00a0were measured during the phytoplankton addition period. Water samples for N2O analysis were collected with a peristaltic pump through a syringe needle directly into 12 ml exetainer that had been flushed with N2 and preserved with KOH to a pH above 12. Approximately six ml sample was collected. N2O concentrations in the headspace were measured on a GC- ECD.\u00a0 Water samples for 15N2 samples were collected with a peristaltic pump through a syringe needle directly into 30 ml serum bottles that had been flushed with He and preserved with KOH to a pH above 12. \u00a0 Approximately eight ml sample was collected. 15N2 was analyzed by GC - Isotope Ratio Mass Spectrometry (IRMS). 15N-Phyto sample was collected by GFF 0.7um filtration of phytoplankton stock solution.
attribute	NC_GLOBAL	awards_0_award_nid	String	568863
attribute	NC_GLOBAL	awards_0_award_number	String	OCE-1233372
attribute	NC_GLOBAL	awards_0_data_url	String	http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1233372
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	Open Mesocosm Oyster Experiment 15N2 and N2O PI: Craig Tobias Co-PI: Bongkuen Song, Michael Piehler, Mark Brush Version: 20171231
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	2018-01-05T18:50:20Z
attribute	NC_GLOBAL	date_modified	String	2019-05-07T17:57:33Z
attribute	NC_GLOBAL	defaultDataQuery	String	&time<now
attribute	NC_GLOBAL	doi	String	10.1575/1912/bco-dmo.722433.1
attribute	NC_GLOBAL	infoUrl	String	https://www.bco-dmo.org/dataset/722433
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	15N2 was measured on a Thermo Delta V IRMS fitted with a Gas Bench II interface following separation from O2 and Ar on a mol sieve 5A column.
attribute	NC_GLOBAL	instruments_0_dataset_instrument_nid	String	722450
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	Thermo Delta V IRMS
attribute	NC_GLOBAL	instruments_1_acronym	String	Gas Chromatograph
attribute	NC_GLOBAL	instruments_1_dataset_instrument_description	String	N2O was measured on a Agilent 7890B GC with a Poropak Column.
attribute	NC_GLOBAL	instruments_1_dataset_instrument_nid	String	722452
attribute	NC_GLOBAL	instruments_1_description	String	Instrument separating gases, volatile substances, or substances dissolved in a volatile solvent by transporting an inert gas through a column packed with a sorbent to a detector for assay. (from SeaDataNet, BODC)
attribute	NC_GLOBAL	instruments_1_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/LAB02/
attribute	NC_GLOBAL	instruments_1_instrument_name	String	Gas Chromatograph
attribute	NC_GLOBAL	instruments_1_instrument_nid	String	661
attribute	NC_GLOBAL	instruments_1_supplied_name	String	Agilent 7890B GC with a Poropak Column
attribute	NC_GLOBAL	instruments_2_dataset_instrument_description	String	15N Phyto sample  was analyzed on the IRMS coupled to a Costech Elemental Analyzer.
attribute	NC_GLOBAL	instruments_2_dataset_instrument_nid	String	722451
attribute	NC_GLOBAL	instruments_2_description	String	Instruments that quantify carbon, nitrogen and sometimes other elements by combusting the sample at very high temperature and assaying the resulting gaseous oxides. Usually used for samples including organic material.
attribute	NC_GLOBAL	instruments_2_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/LAB01/
attribute	NC_GLOBAL	instruments_2_instrument_name	String	Elemental Analyzer
attribute	NC_GLOBAL	instruments_2_instrument_nid	String	546339
attribute	NC_GLOBAL	instruments_2_supplied_name	String	Costech Elemental Analyzer
attribute	NC_GLOBAL	keywords	String	bco, bco-dmo, biological, C1_15N2, C1_N2O, C2_15N2, C2_N2O, C3_15N2, C3_N2O, chemical, data, dataset, dmo, erddap, hours, management, O1_15N2, O1_N2O, O2, O2_15N2, O2_N2O, O3_15N2, O3_N2O, oceanography, office, oxygen, phyto, Phyto_15N, preliminary
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/722433/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/722433
attribute	NC_GLOBAL	param_mapping	String	{'722433': {}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/722433/parameters
attribute	NC_GLOBAL	people_0_affiliation	String	University of Connecticut
attribute	NC_GLOBAL	people_0_affiliation_acronym	String	UConn - Avery Point
attribute	NC_GLOBAL	people_0_person_name	String	Craig Tobias
attribute	NC_GLOBAL	people_0_person_nid	String	51731
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	Virginia Institute of Marine Science
attribute	NC_GLOBAL	people_1_affiliation_acronym	String	VIMS
attribute	NC_GLOBAL	people_1_person_name	String	Mark J. Brush
attribute	NC_GLOBAL	people_1_person_nid	String	568861
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	University of North Carolina at Chapel Hill
attribute	NC_GLOBAL	people_2_affiliation_acronym	String	UNC-Chapel Hill-IMS
attribute	NC_GLOBAL	people_2_person_name	String	Michael F. Piehler
attribute	NC_GLOBAL	people_2_person_nid	String	522931
attribute	NC_GLOBAL	people_2_role	String	Co-Principal Investigator
attribute	NC_GLOBAL	people_2_role_type	String	originator
attribute	NC_GLOBAL	people_3_affiliation	String	Virginia Institute of Marine Science
attribute	NC_GLOBAL	people_3_affiliation_acronym	String	VIMS
attribute	NC_GLOBAL	people_3_person_name	String	Bongkeun Song
attribute	NC_GLOBAL	people_3_person_nid	String	51729
attribute	NC_GLOBAL	people_3_role	String	Co-Principal Investigator
attribute	NC_GLOBAL	people_3_role_type	String	originator
attribute	NC_GLOBAL	people_4_affiliation	String	University of Connecticut
attribute	NC_GLOBAL	people_4_affiliation_acronym	String	UConn - Avery Point
attribute	NC_GLOBAL	people_4_person_name	String	Craig Tobias
attribute	NC_GLOBAL	people_4_person_nid	String	51731
attribute	NC_GLOBAL	people_4_role	String	Contact
attribute	NC_GLOBAL	people_4_role_type	String	related
attribute	NC_GLOBAL	people_5_affiliation	String	Woods Hole Oceanographic Institution
attribute	NC_GLOBAL	people_5_affiliation_acronym	String	WHOI BCO-DMO
attribute	NC_GLOBAL	people_5_person_name	String	Mathew Biddle
attribute	NC_GLOBAL	people_5_person_nid	String	708682
attribute	NC_GLOBAL	people_5_role	String	BCO-DMO Data Manager
attribute	NC_GLOBAL	people_5_role_type	String	related
attribute	NC_GLOBAL	project	String	Oyster Reef N2O Emission
attribute	NC_GLOBAL	projects_0_acronym	String	Oyster Reef N2O Emission
attribute	NC_GLOBAL	projects_0_description	String	Extracted from the NSF award abstract: Oyster reefs are biogeochemical hot spots and prominent estuarine habitats that provide disproportionate ecological function. Suspension-feeding eastern oysters, Crassostrea virginica, are capable of improving water quality and diminishing eutrophication by filtering nutrients and particles from the water and depositing them in the sediments. Remineralization of these deposits may enhance sedimentary denitrification that facilitates nitrogen removal in tidal estuaries. However, the scientific underpinning of oyster reef function has been challenged in various studies. In addition, recent studies of filter feeding invertebrates reported the production of nitrous oxide (N2O), a greenhouse gas, as an end product of incomplete denitrification by gut microbes. C. virginica could be another source of N2O flux from intertidal habitats. Preliminary work indicated substantial N2O production from individual oysters. The estimated N2O production from high density oyster reefs may exceed the N2O flux measured from some estuaries. With the new discovery of N2O emission and uncertainty regarding eutrophication control, the ecological value of oyster reef restoration may become equivocal. This project will quantify N2O fluxes to understand the factors controlling N2O emission from oyster reefs. Sedimentary N processes will be examined to develop an oyster reef N model to estimate N2O emission from tidal creek estuaries relative to other N cycling processes. The PIs hypothesize that intertidal oyster reefs are a substantial source of N2O emission from estuarine ecosystems and the magnitude of emission may be linked to water quality. If substantial N2O flux from oyster reefs is validated, ecological benefits of oyster reef restoration should be reevaluated. This interdisciplinary research team includes a microbial ecologist, a biogeochemist, an ecologist and an ecosystem modeler. They will utilize stable isotope and molecular microbiological techniques to quantify oyster N2O production, elucidate microbial sources of N2O emission from oysters and sediments, and estimate seasonal variation of N2O fluxes from oyster reefs. Measurements from this study will be integrated into a coupled oyster bioenergetics-sediment biogeochemistry model to compare system level rates of N cycling on oyster reefs as a function of oyster density and water quality. Modeling results will be used to assess the relative trade-­offs of oyster restoration associated with N cycling. They expect to deliver the following end products:1) estimation of annual N2O flux from oyster reefs as an additional source of greenhouse gases from estuaries, 2) a better understanding of the environmental and microbial factors influencing N2O and N2 fluxes in tidal estuaries, 3) transformative knowledge for the effect of oyster restoration on water quality enhancement and ecosystem function, 4) direct guidance for oyster restoration projects whose goals include water quality enhancement, and 5) a modeling tool for use in research and restoration planning.
attribute	NC_GLOBAL	projects_0_end_date	String	2015-08
attribute	NC_GLOBAL	projects_0_name	String	Microbial Regulation of Greenhouse Gas N2O Emission from Intertidal Oyster Reefs
attribute	NC_GLOBAL	projects_0_project_nid	String	527289
attribute	NC_GLOBAL	projects_0_start_date	String	2012-12
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	Phyto_15N
attribute	NC_GLOBAL	summary	String	Open Mesocosm Oyster 15N2 and N2O
attribute	NC_GLOBAL	title	String	Open Mesocosm Oyster 15N2 and N2O
attribute	NC_GLOBAL	version	String	1
attribute	NC_GLOBAL	xml_source	String	osprey2erddap.update_xml() v1.3
variable	Hours		float
attribute	Hours	_FillValue	float	NaN
attribute	Hours	actual_range	float	0.0, 64.58
attribute	Hours	bcodmo_name	String	duration
attribute	Hours	description	String	Time since phyto feeding start
attribute	Hours	long_name	String	Hours
attribute	Hours	units	String	hours
variable	Phyto_15N		byte
attribute	Phyto_15N	_FillValue	byte	127
attribute	Phyto_15N	actual_range	byte	45, 45
attribute	Phyto_15N	bcodmo_name	String	unknown
attribute	Phyto_15N	description	String	15N enrichment of phytoplankton at% 15N
attribute	Phyto_15N	long_name	String	Phyto 15 N
attribute	Phyto_15N	units	String	percent
variable	O1_15N2		float
attribute	O1_15N2	_FillValue	float	NaN
attribute	O1_15N2	actual_range	float	0.5, 23.3
attribute	O1_15N2	bcodmo_name	String	N
attribute	O1_15N2	description	String	Oyster mecosm1 15N enrichment of dissolved N2
attribute	O1_15N2	long_name	String	O1 15 N2
attribute	O1_15N2	units	String	permil (/ml)
variable	O1_N2O		float
attribute	O1_N2O	_FillValue	float	NaN
attribute	O1_N2O	actual_range	float	19.3, 39.8
attribute	O1_N2O	bcodmo_name	String	Nitrous Oxide
attribute	O1_N2O	description	String	Oyster mecosm1 Aqueous N2O concentration
attribute	O1_N2O	long_name	String	O1 N2 O
attribute	O1_N2O	units	String	nanomole (nM)
variable	O2_15N2		float
attribute	O2_15N2	_FillValue	float	NaN
attribute	O2_15N2	actual_range	float	0.4, 44.7
attribute	O2_15N2	bcodmo_name	String	N
attribute	O2_15N2	description	String	Oyster mecosm 2 15N enrichment of dissolved N2
attribute	O2_15N2	long_name	String	O2 15 N2
attribute	O2_15N2	units	String	permil (/ml)
variable	O2_N2O		float
attribute	O2_N2O	_FillValue	float	NaN
attribute	O2_N2O	actual_range	float	30.1, 48.8
attribute	O2_N2O	bcodmo_name	String	Nitrous Oxide
attribute	O2_N2O	description	String	Oyster mecosm 2 Aqueous N2O concentration
attribute	O2_N2O	long_name	String	O2 N2 O
attribute	O2_N2O	units	String	nanomole (nM)
variable	O3_15N2		float
attribute	O3_15N2	_FillValue	float	NaN
attribute	O3_15N2	actual_range	float	0.4, 34.3
attribute	O3_15N2	bcodmo_name	String	N
attribute	O3_15N2	description	String	Oyster mecosm 3 15N enrichment of dissolved N2
attribute	O3_15N2	long_name	String	O3 15 N2
attribute	O3_15N2	units	String	permil (/ml)
variable	O3_N2O		float
attribute	O3_N2O	_FillValue	float	NaN
attribute	O3_N2O	actual_range	float	14.7, 34.0
attribute	O3_N2O	bcodmo_name	String	Nitrous Oxide
attribute	O3_N2O	description	String	Oyster mecosm 3 Aqueous N2O concentration
attribute	O3_N2O	long_name	String	O3 N2 O
attribute	O3_N2O	units	String	nanomole (nM)
variable	C1_15N2		float
attribute	C1_15N2	_FillValue	float	NaN
attribute	C1_15N2	actual_range	float	0.4, 25.0
attribute	C1_15N2	bcodmo_name	String	N
attribute	C1_15N2	description	String	Control mecosm 1 15N enrichment of dissolved N2
attribute	C1_15N2	long_name	String	C1 15 N2
attribute	C1_15N2	units	String	permil (/ml)
variable	C1_N2O		float
attribute	C1_N2O	_FillValue	float	NaN
attribute	C1_N2O	actual_range	float	14.6, 37.2
attribute	C1_N2O	bcodmo_name	String	Nitrous Oxide
attribute	C1_N2O	description	String	Control mecosm 1 Aqueous N2O concentration
attribute	C1_N2O	long_name	String	C1 N2 O
attribute	C1_N2O	units	String	nanomole (nM)
variable	C2_15N2		float
attribute	C2_15N2	_FillValue	float	NaN
attribute	C2_15N2	actual_range	float	0.2, 24.7
attribute	C2_15N2	bcodmo_name	String	N
attribute	C2_15N2	description	String	Control mecosm 2 15N enrichment of dissolved N2
attribute	C2_15N2	long_name	String	C2 15 N2
attribute	C2_15N2	units	String	permil (/ml)
variable	C2_N2O		float
attribute	C2_N2O	_FillValue	float	NaN
attribute	C2_N2O	actual_range	float	15.5, 30.9
attribute	C2_N2O	bcodmo_name	String	Nitrous Oxide
attribute	C2_N2O	description	String	Control mecosm 2 Aqueous N2O concentration
attribute	C2_N2O	long_name	String	C2 N2 O
attribute	C2_N2O	units	String	nanomole (nM)
variable	C3_15N2		float
attribute	C3_15N2	_FillValue	float	NaN
attribute	C3_15N2	actual_range	float	0.3, 20.6
attribute	C3_15N2	bcodmo_name	String	N
attribute	C3_15N2	description	String	Control mecosm 3 15N enrichment of dissolved N2
attribute	C3_15N2	long_name	String	C3 15 N2
attribute	C3_15N2	units	String	permil (/ml)
variable	C3_N2O		float
attribute	C3_N2O	_FillValue	float	NaN
attribute	C3_N2O	actual_range	float	29.2, 67.2
attribute	C3_N2O	bcodmo_name	String	Nitrous Oxide
attribute	C3_N2O	description	String	Control mecosm 3 Aqueous N2O concentration
attribute	C3_N2O	long_name	String	C3 N2 O
attribute	C3_N2O	units	String	nanomole (nM)

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.