ERDDAP > info > bcodmo_dataset_681423

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	CTD data collected on a R/V Sarmiento de Gamboa cruise in the Subtropical North Atlantic Ocean between January and March 2011 (Microbial associations in zooplankton project)		I   M	background			BCO-DMO	bcodmo_dataset_681423

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	A profile was conducted using a Seabird sonde.
attribute	NC_GLOBAL	awards_0_award_nid	String	542156
attribute	NC_GLOBAL	awards_0_award_number	String	OCE-1130495
attribute	NC_GLOBAL	awards_0_data_url	String	http://www.nsf.gov/awardsearch/showAward?AWD_ID=1130495
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	CTD Data Moisander and Riemann, PIs Version 2 February 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	2017-02-07T22:42:25Z
attribute	NC_GLOBAL	date_modified	String	2019-04-04T16:50:36Z
attribute	NC_GLOBAL	defaultDataQuery	String	&time<now
attribute	NC_GLOBAL	doi	String	10.1575/1912/bco-dmo.681423.1
attribute	NC_GLOBAL	geospatial_vertical_max	double	30.501
attribute	NC_GLOBAL	geospatial_vertical_min	double	1.03
attribute	NC_GLOBAL	geospatial_vertical_positive	String	down
attribute	NC_GLOBAL	geospatial_vertical_units	String	m
attribute	NC_GLOBAL	infoUrl	String	https://www.bco-dmo.org/dataset/681423
attribute	NC_GLOBAL	institution	String	BCO-DMO
attribute	NC_GLOBAL	instruments_0_acronym	String	CTD Sea-Bird
attribute	NC_GLOBAL	instruments_0_dataset_instrument_description	String	CTD used to sample
attribute	NC_GLOBAL	instruments_0_dataset_instrument_nid	String	681432
attribute	NC_GLOBAL	instruments_0_description	String	Conductivity, Temperature, Depth (CTD) sensor package from SeaBird Electronics, no specific unit identified. This instrument designation is used when specific make and model are not known. See also other SeaBird instruments listed under CTD. More information from Sea-Bird Electronics.
attribute	NC_GLOBAL	instruments_0_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/130/
attribute	NC_GLOBAL	instruments_0_instrument_name	String	CTD Sea-Bird
attribute	NC_GLOBAL	instruments_0_instrument_nid	String	447
attribute	NC_GLOBAL	instruments_0_supplied_name	String	CTD
attribute	NC_GLOBAL	keywords	String	active, available, bco, bco-dmo, biological, chemical, data, dataset, density, depth, dmo, downwelling, downwelling_photosynthetic_photon_radiance_in_sea_water, earth, Earth Science > Oceans > Ocean Optics > Photosynthetically Active Radiation, Earth Science > Oceans > Ocean Optics > Radiance, Earth Science > Oceans > Salinity/Density > Salinity, erddap, fluorescence, management, ocean, oceanography, oceans, office, optics, PAR, photon, photosynthetic, photosynthetically, practical, preliminary, radiance, radiation, salinity, science, sea, sea_water_practical_salinity, seawater, temperature, water
attribute	NC_GLOBAL	keywords_vocabulary	String	GCMD Science Keywords
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/681423/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/681423
attribute	NC_GLOBAL	param_mapping	String	{'681423': {'depth': 'flag - depth'}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/681423/parameters
attribute	NC_GLOBAL	people_0_affiliation	String	University of Massachusetts Dartmouth
attribute	NC_GLOBAL	people_0_affiliation_acronym	String	UMASSD-SMAST
attribute	NC_GLOBAL	people_0_person_name	String	Dr Pia Moisander
attribute	NC_GLOBAL	people_0_person_nid	String	564454
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	Université de Toulon
attribute	NC_GLOBAL	people_1_person_name	String	Mar Benavides
attribute	NC_GLOBAL	people_1_person_nid	String	680979
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	Hannah Ake
attribute	NC_GLOBAL	people_2_person_nid	String	650173
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	Microbial associations in zooplankton
attribute	NC_GLOBAL	projects_0_acronym	String	Microbial associations in zooplankton
attribute	NC_GLOBAL	projects_0_description	String	Description from NSF award abstract: Nitrogen (N2) fixation is a key biogeochemical process providing new N for the marine ecosystem. Current estimates of the global rates suggest that the inputs and outputs of N are not in balance, leaving an apparent deficiency in N2 fixation in the oceanic N budget. Based on recovery of N2 fixation gene fragments, however, numerous potential N2-fixing microbes are present in the euphotic layer and below, yet evidence for their contribution to N2-fixation is lacking. The goal of this study is to identify and determine the importance of potentially diazotrophic, heterotrophic prokaryotes occupying a previously unstudied niche in the upper ocean. This project PIs hypothesize that N2 fixation in zooplankton-associated microbial communities is an important source of new N in the open ocean contributing to the oceanic N budget. In oligotrophic, N-limited open ocean waters, zooplankton are faced with the same low N availability in their diets that limits growth of primary producers and heterotrophic microbes in the open ocean. Zooplankton guts would be a particularly suitable environment for heterotrophic N2-fixers as the nitrogenase enzyme is inhibited by oxygen. In many terrestrial insects, N2 fixation by gut microbes serves as a source of N. The aim of this study is to investigate whether similar associations occur in marine zooplankton that live on N-limited phytoplankton. The PIs will investigate specific associations between copepods from N-limited and non-N limited oceanic waters with microorganisms that are potentially or actively fixing N. They will also investigate the fate of this N to study whether the new N is incorporated into the zooplankton host. The main research objectives are to determine whether: 1. diazotrophic microflora exist in copepods and what is their seasonal and spatial variability, 2. microbial communities associated with copepods are actively fixing N2, 3. diazotroph communities contribute to the N nutrition of their zooplankton hosts. Monthly samples will be collected in the oligotrophic Sargasso Sea, in association with BATS sampling cruises. In addition, experiments and field studies will be conducted in Bermuda during the summer. For comparison to a site that is not severely N limited, and for methods development, additional studies will be carried out in coastal Gulf of Maine waters. Selected copepod species and their fecal pellets will be analyzed for the presence of nifH genes and their expression using cloning and sequencing and Reverse Transcriptase-PCR. Quantitative PCR will be employed to investigate the seasonal distributions of dominant phylotypes. Anaerobic cultivation will be used for the enrichment of the gut microflora. Zooplankton will be incubated with 15N2 to quantify microbial N2 fixation activity and its fate of N through zooplankton overall 15N content and nanoSIMS determination of 15N localization. Products of this study will include novel microbial isolates or consortia, evidence regarding taxa-specific expression of N2 fixation in these microhabitats, and a first estimate for the importance of this process for the oceanic N budget. This project addresses fundamental issues regarding the sources of oceanic nitrogen and will test hypotheses regarding previously overlooked diazotrophic niches. As open ocean productivity is frequently N limited, characterization of new sources of N will have global impacts.
attribute	NC_GLOBAL	projects_0_end_date	String	2016-08
attribute	NC_GLOBAL	projects_0_geolocation	String	Sargasso Sea, Eastern and Western North Atlantic.
attribute	NC_GLOBAL	projects_0_name	String	Microbial associations in zooplankton: significance for the marine nitrogen cycle
attribute	NC_GLOBAL	projects_0_project_nid	String	564455
attribute	NC_GLOBAL	projects_0_start_date	String	2011-09
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	CTD data collected on a R/V Sarmiento de Gamboa cruise in the Subtropical North Atlantic Ocean between January and March 2011 (Microbial associations in zooplankton project)
attribute	NC_GLOBAL	title	String	CTD data collected on a R/V Sarmiento de Gamboa cruise in the Subtropical North Atlantic Ocean between January and March 2011 (Microbial associations in zooplankton project)
attribute	NC_GLOBAL	version	String	1
attribute	NC_GLOBAL	xml_source	String	osprey2erddap.update_xml() v1.3
variable	depth		double
attribute	depth	_CoordinateAxisType	String	Height
attribute	depth	_CoordinateZisPositive	String	down
attribute	depth	_FillValue	double	NaN
attribute	depth	actual_range	double	1.03, 30.501
attribute	depth	axis	String	Z
attribute	depth	bcodmo_name	String	depth
attribute	depth	colorBarMaximum	double	8000.0
attribute	depth	colorBarMinimum	double	-8000.0
attribute	depth	colorBarPalette	String	TopographyDepth
attribute	depth	description	String	Depth at which sample was taken
attribute	depth	ioos_category	String	Location
attribute	depth	long_name	String	Depth
attribute	depth	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P09/current/DEPH/
attribute	depth	positive	String	down
attribute	depth	standard_name	String	depth
attribute	depth	units	String	m
variable	salinity		float
attribute	salinity	_FillValue	float	NaN
attribute	salinity	actual_range	float	15.1632, 33.2996
attribute	salinity	bcodmo_name	String	sal
attribute	salinity	colorBarMaximum	double	37.0
attribute	salinity	colorBarMinimum	double	32.0
attribute	salinity	description	String	Salinity at depth
attribute	salinity	long_name	String	Sea Water Practical Salinity
attribute	salinity	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/PSALST01/
attribute	salinity	units	String	pratical salinity units
variable	temperature		float
attribute	temperature	_FillValue	float	NaN
attribute	temperature	actual_range	float	6.2269, 14.8045
attribute	temperature	bcodmo_name	String	temperature
attribute	temperature	description	String	Temperature at depth
attribute	temperature	long_name	String	Temperature
attribute	temperature	units	String	Celsius
variable	fluorescence		float
attribute	fluorescence	_FillValue	float	NaN
attribute	fluorescence	actual_range	float	0.0012, 0.0122
attribute	fluorescence	bcodmo_name	String	fluorescence
attribute	fluorescence	description	String	Fluorsence at depth
attribute	fluorescence	long_name	String	Fluorescence
attribute	fluorescence	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/CPHLPM01/
attribute	fluorescence	units	String	volts
variable	PAR		float
attribute	PAR	_FillValue	float	NaN
attribute	PAR	actual_range	float	0.177, 1080.0
attribute	PAR	bcodmo_name	String	PAR
attribute	PAR	colorBarMaximum	double	70.0
attribute	PAR	colorBarMinimum	double	0.0
attribute	PAR	description	String	Photosynthetically Active Radiation
attribute	PAR	long_name	String	Downwelling Photosynthetic Photon Radiance In Sea Water
attribute	PAR	units	String	uE/m^2/sec

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.