ERDDAP > info > bcodmo_dataset_747014

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
		data	graph		files	public	[d15N of PON from Sediment Traps] - d15N of size-fractionated particulate organic nitrogen (PON) from sediment traps in the Sargasso Sea (Understanding the nitrogen isotopes of planktonic foraminifera: A modern Sargasso Sea study)		I   M	background			BCO-DMO	bcodmo_dataset_747014

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	Bulk sinking PON was collected by sediment traps moored at 500 m, 1500 m, and 3200 m water depth (Conte et al., 2001; Conte and Weber, 2014) between November 2009 and November 2010, with each sample representing a two-week collection. Isotope measurements were made on the <125 um size fraction. See methods section of Smart et al. (2018) for more details of sample collection, isotope analysis and data quality. The d15N of sinking PON was analyzed on the <125 um size fraction of sediment trap samples by mass spectrometry using either a Europa 20-20 or GV Isoprime mass spectrometer.
attribute	NC_GLOBAL	awards_0_award_nid	String	55176
attribute	NC_GLOBAL	awards_0_award_number	String	OCE-0960802
attribute	NC_GLOBAL	awards_0_data_url	String	http://www.nsf.gov/awardsearch/showAward?AWD_ID=0960802
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	Donald L. Rice
attribute	NC_GLOBAL	awards_0_program_manager_nid	String	51467
attribute	NC_GLOBAL	awards_1_award_nid	String	544342
attribute	NC_GLOBAL	awards_1_award_number	String	OCE-1136345
attribute	NC_GLOBAL	awards_1_data_url	String	http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1136345
attribute	NC_GLOBAL	awards_1_funder_name	String	NSF Division of Ocean Sciences
attribute	NC_GLOBAL	awards_1_funding_acronym	String	NSF OCE
attribute	NC_GLOBAL	awards_1_funding_source_nid	String	355
attribute	NC_GLOBAL	awards_1_program_manager	String	David L. Garrison
attribute	NC_GLOBAL	awards_1_program_manager_nid	String	50534
attribute	NC_GLOBAL	awards_2_award_nid	String	558188
attribute	NC_GLOBAL	awards_2_award_number	String	OCE-1060947
attribute	NC_GLOBAL	awards_2_data_url	String	http://www.nsf.gov/awardsearch/showAward?AWD_ID=1060947
attribute	NC_GLOBAL	awards_2_funder_name	String	NSF Division of Ocean Sciences
attribute	NC_GLOBAL	awards_2_funding_acronym	String	NSF OCE
attribute	NC_GLOBAL	awards_2_funding_source_nid	String	355
attribute	NC_GLOBAL	awards_2_program_manager	String	Henrietta N Edmonds
attribute	NC_GLOBAL	awards_2_program_manager_nid	String	51517
attribute	NC_GLOBAL	cdm_data_type	String	Other
attribute	NC_GLOBAL	comment	String	Bulk particulate organic nitrogen isotopes from Sargasso Sea sediment traps Data published in: Smart et al. (2018) - https://doi.org/10.1016/j.gca.2018.05.023 PI: Daniel M. Sigman (Princeton) Contact: Sandi Smart (Stellenbosch University & The Max Planck Institute for Chemistry) Version date: 01 October 2018 -999 = missing data
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	2018-10-02T17:34:42Z
attribute	NC_GLOBAL	date_modified	String	2020-01-10T18:58:01Z
attribute	NC_GLOBAL	defaultDataQuery	String	&amp;time&lt;now
attribute	NC_GLOBAL	doi	String	10.1575/1912/bco-dmo.747014.1
attribute	NC_GLOBAL	infoUrl	String	https://www.bco-dmo.org/dataset/747014
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	The d15N of sinking PON was analyzed on the
attribute	NC_GLOBAL	instruments_0_dataset_instrument_nid	String	747024
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	Europa 20-20 or GV Isoprime
attribute	NC_GLOBAL	instruments_1_acronym	String	Sediment Trap
attribute	NC_GLOBAL	instruments_1_dataset_instrument_description	String	Bulk sinking PON was collected by sediment traps moored at 500 m, 1500 m, and 3200 m water depth.
attribute	NC_GLOBAL	instruments_1_dataset_instrument_nid	String	747023
attribute	NC_GLOBAL	instruments_1_description	String	Sediment traps are specially designed containers deployed in the water column for periods of time to collect particles from the water column falling toward the sea floor. In general a sediment trap has a jar at the bottom to collect the sample and a broad funnel-shaped opening at the top with baffles to keep out very large objects and help prevent the funnel from clogging. This designation is used when the specific type of sediment trap was not specified by the contributing investigator.
attribute	NC_GLOBAL	instruments_1_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/33/
attribute	NC_GLOBAL	instruments_1_instrument_name	String	Sediment Trap
attribute	NC_GLOBAL	instruments_1_instrument_nid	String	518
attribute	NC_GLOBAL	instruments_1_supplied_name	String	sediment traps
attribute	NC_GLOBAL	keywords	String	1500m, 3200m, 500m, bco, bco-dmo, biological, bulk, bulk_d15N_1500m, bulk_d15N_3200m, bulk_d15N_500m, chemical, collection, d15, data, dataset, date, dmo, erddap, management, mid, oceanography, office, preliminary, time
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/747014/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/747014
attribute	NC_GLOBAL	param_mapping	String	{'747014': {}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/747014/parameters
attribute	NC_GLOBAL	people_0_affiliation	String	Princeton University
attribute	NC_GLOBAL	people_0_person_name	String	Daniel M. Sigman
attribute	NC_GLOBAL	people_0_person_nid	String	51417
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	Stellenbosch University
attribute	NC_GLOBAL	people_1_person_name	String	Sandi M. Smart
attribute	NC_GLOBAL	people_1_person_nid	String	557790
attribute	NC_GLOBAL	people_1_role	String	Contact
attribute	NC_GLOBAL	people_1_role_type	String	related
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	N Isotopes Foraminifera
attribute	NC_GLOBAL	projects_0_acronym	String	N Isotopes Foraminifera
attribute	NC_GLOBAL	projects_0_description	String	NSF Award Abstract: Nitrogen (N) and phosphorus are the two nutrients required in large quantity by phytoplankton in the ocean, and together they limit productivity throughout most of the tropical, subtropical, and temperate ocean. Both the cycling of N and its input/output budget have been argued to control the fertility of the ocean and the ocean's role in setting atmospheric CO2. The CaCO3 tests of foraminifera can represent a substantial fraction of marine sediments and have been used extensively in paleoceanography; they are an obvious target for isotopic analysis of microfossil-bound organic matter. In recent years, researchers at Princeton have developed a protocol for the isotopic analysis of foraminiferal shell-bound N. The current protocol is at least 100 times more sensitive than typical on-line combustion, allowing for rapid progress with a N isotope archive that was previously not feasible to measure. Measurements on surface sediments and a downcore record from the Caribbean show the promise of foraminifera-bound del15N (fb-del15N) to provide both a robust N isotope archive for paleoceanography, and one with a unique potential of richness, given the existence of multiple foraminiferal species with different depth habitats and behaviors. Moreover, the finding from the Caribbean Sea record -- reduced N fixation in ice age Atlantic -- has changed the scientific conversation about the nature of the input/output budget of oceanic fixed N and its potential to change ocean fertility and atmospheric CO2. However, the controls on fb-del15N have not yet been adequately studied. In this project, as a first major step in developing a foundation for the paleoceanographic application of fb-del15N, the same Princeton University team will study its genesis in the water column, transport to the seafloor, and early diagenesis. They will undertake this study in the Sargasso Sea south of Bermuda. This is one of the best studied regions of the ocean, in general and with respect to foraminifera, and a region that has been has been a focus of the N isotope research of the PI for the last decade and others previously. Moreover, its significant seasonality -- in physical oceanography, biogeochemistry, and foraminiferal species abundance -- will facilitate the effort to understand the controls on fb-del15N at a mechanistic level. The research team will participate in six Bermuda Atlantic Time-series Study (BATS) cruises over two years, collecting foraminifera and other N forms likely to provide insight into the controls on fb-del15N. From the nearby Oceanic Flux Program (OFP) moored sediment traps and from shallow sediments collected in the region, they will pick foraminifera shells and again make relevant ancillary measurements. This work will establish the relationship of foraminiferal biomass to shell-bound del15N for different species, and comparison of the foraminiferal isotope data with the upper ocean N pools will yield empirical isotopic relationships and work toward a mechanistic insight of fb-del15N (e.g., the importance of different N pools to the diets of different foraminifera; the role of algal symbionts). The sediment trap and surface sediment data will support the plankton tow data by integrating over longer time scales and will also address questions regarding late stage (e.g., gametogenic) calcification and the early diagenesis of fb-del15N and fb-N content. Broader Impacts: This study will yield an improved understanding of the nutrient dynamics of foraminifera, a class of organisms whose shells are a central tool in micropaleontology and paleoclimatology. The project will also build on the principal investigator's involvement in the Bermuda Institute of Ocean Sciences as an asset for integrating ocean-related education and research at both the undergraduate and graduate levels.
attribute	NC_GLOBAL	projects_0_end_date	String	2016-03
attribute	NC_GLOBAL	projects_0_geolocation	String	Sargasso Sea
attribute	NC_GLOBAL	projects_0_name	String	Understanding the nitrogen isotopes of planktonic foraminifera: A modern Sargasso Sea study
attribute	NC_GLOBAL	projects_0_project_nid	String	743583
attribute	NC_GLOBAL	projects_0_start_date	String	2011-04
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	d15N of size-fractionated particulate organic nitrogen (PON) from sediment traps n the Sargasso Sea (off Bermuda) in the western subtropical North Atlantic. Sediment traps from 500 m, 1500 m, and 3200 m water depth (31\u00b050\u2019N, 64\u00b010\u2019W).
attribute	NC_GLOBAL	title	String	[d15N of PON from Sediment Traps] - d15N of size-fractionated particulate organic nitrogen (PON) from sediment traps in the Sargasso Sea (Understanding the nitrogen isotopes of planktonic foraminifera: A modern Sargasso Sea study)
attribute	NC_GLOBAL	version	String	1
attribute	NC_GLOBAL	xml_source	String	osprey2erddap.update_xml() v1.3
variable	mid_collection_date		String
attribute	mid_collection_date	bcodmo_name	String	date
attribute	mid_collection_date	description	String	Collection date (yyyy-mm-dd)
attribute	mid_collection_date	long_name	String	Mid Collection Date
attribute	mid_collection_date	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/ADATAA01/
attribute	mid_collection_date	source_name	String	mid_collection_date
attribute	mid_collection_date	time_precision	String	1970-01-01
attribute	mid_collection_date	units	String	unitless
variable	bulk_d15N_500m		float
attribute	bulk_d15N_500m	_FillValue	float	NaN
attribute	bulk_d15N_500m	actual_range	float	-999.0, 4.66
attribute	bulk_d15N_500m	bcodmo_name	String	d15N
attribute	bulk_d15N_500m	description	String	Bulk d15N (per mil vs. AIR) of the
attribute	bulk_d15N_500m	long_name	String	Bulk D15 N 500m
attribute	bulk_d15N_500m	units	String	per mil
variable	bulk_d15N_1500m		float
attribute	bulk_d15N_1500m	_FillValue	float	NaN
attribute	bulk_d15N_1500m	actual_range	float	-999.0, 5.12
attribute	bulk_d15N_1500m	bcodmo_name	String	d15N
attribute	bulk_d15N_1500m	description	String	Bulk d15N (per mil vs. AIR) of the
attribute	bulk_d15N_1500m	long_name	String	Bulk D15 N 1500m
attribute	bulk_d15N_1500m	units	String	per mil
variable	bulk_d15N_3200m		float
attribute	bulk_d15N_3200m	_FillValue	float	NaN
attribute	bulk_d15N_3200m	actual_range	float	-0.22, 2.61
attribute	bulk_d15N_3200m	bcodmo_name	String	d15N
attribute	bulk_d15N_3200m	description	String	Bulk d15N (per mil vs. AIR) of the
attribute	bulk_d15N_3200m	long_name	String	Bulk D15 N 3200m
attribute	bulk_d15N_3200m	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.