ERDDAP > info > bcodmo_dataset_763873

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			files	public	[HADES-K bacterial biomarker phospholipid fatty acid (PLFA)] - Sample log for HADESK bacterial biomarker phospholipid fatty acid content from sediment cores collected on R/V Thomas G. Thompson cruise TN309, May 2014 (Controls on Hadal Megafaunal Community Structure: a Systematic Examination of Pressure, Food Supply, and Topography)		I   M	background			BCO-DMO	bcodmo_dataset_763873

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	Push cores (6.35 cm diameter) of sediment were collected in situ using the manipulator arm of the Hybrid Remotely Operated Vehicle Nereus on the margin of the Kermadec Trench (6013m) and along the main trench axis (7137 to 9177m) at roughly 1000m increments. Cores were sectioned at 1cm intervals and sieved for the meiofaunal fraction. Upon retrieval of sediment cores, the 0-1, 1-2, 2-3, 3-5, 5-10 cm depth horizons were sectioned and stored frozen (-80 \u00b0C) until analysis. Benthic bacterial biomass were calculated from sediment concentrations of the bacterial biomarker phospholipid fatty acids (PLFAs) i14:0, i15:0, ai15:0, i16:0. In brief, PLFAs were extracted and purified from known quantities of freeze-dried sediment samples and subsequently derivatized to yield fatty acid methyl esters (FAMEs). FAMEs were quantified using GC-FID (Agilent Technologies 6890N). Bacterial biomass was calculated using the well- established PLFA:C conversion factor of 0.056 gC PLFA/gC biomass. Attempts were made to obtain 3 replicate cores at each depth horizon (every 1000 meters from 6000m to 10,000m.\u00a0 For logistical reasons with vehicle performance (and loss at 10,000), all of the replicates were not able to be collected.
attribute	NC_GLOBAL	awards_0_award_nid	String	536451
attribute	NC_GLOBAL	awards_0_award_number	String	OCE-1131620
attribute	NC_GLOBAL	awards_0_data_url	String	http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1131620
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	Sediment sample log from push cores used for PLFA (phospholipid fatty acid) and OM (Organic Matter) analyses collected at the Kermadec Trench on R/V Thomas G. Thompson cruise TN309, May 2014 PI: T. Shank (WHOI) version: 2019-03-28 'n.u.' indicates deeper sections in the core that were not used for the analysis
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	2019-03-28T13:17:19Z
attribute	NC_GLOBAL	date_modified	String	2019-06-17T17:28:04Z
attribute	NC_GLOBAL	defaultDataQuery	String	&time<now
attribute	NC_GLOBAL	doi	String	10.1575/1912/bco-dmo.763873.1
attribute	NC_GLOBAL	infoUrl	String	https://www.bco-dmo.org/dataset/763873
attribute	NC_GLOBAL	institution	String	BCO-DMO
attribute	NC_GLOBAL	instruments_0_acronym	String	HROV Nereus
attribute	NC_GLOBAL	instruments_0_dataset_instrument_nid	String	763881
attribute	NC_GLOBAL	instruments_0_description	String	Nereus is an efficient, multi-purpose “hybrid” vehicle that can explore and operate in the crushing pressures of the greatest ocean depths. An unmanned vehicle, Nereus operates in two complementary modes. It can swim freely as an autonomous underwater vehicle (AUV) to survey large areas of the depths, map the seafloor, and give scientists a broad overview. When Nereus locates something interesting, the vehicle’s support team can bring the vehicle back on board the ship and transforms it into a remotely operated vehicle (ROV) tethered to the ship via a micro-thin, fiber-optic cable. Through this tether, Nereus can transmit high-quality, real-time video images and receive commands from skilled pilots on the ship to collect samples or conduct experiments with a manipulator arm. Technical specifications: Weight on land: 2,800 kg Payload capacity: 25 kg Maximum speed: 3 knots Batteries: rechargable lithium ion, 15 kilowatt hours in two pressure housings Thrusters: 2 fore and aft, 2 vertical, 1 lateral (ROV mode) 2 fore and aft, 1 vertical (AUV mode) Lights: variable output LED array, strobes Manipulator arm: Kraft TeleRobotics 7-function hydraulic manipulator Sonar: scanning sonar, forward look and profile, 675 KHz Sensors: magnetometer, CTD (to measure conductivity, temperature, and depth) Nereus supports a variety of science operations: Push coring, measuring heat flow, geotechnical and geochemical sensing, rock sampling and drilling, biological sampling, water sampling, high resolution acoustic bathymetry, and optical still and video imagery. More information is available from the operator site at URL.
attribute	NC_GLOBAL	instruments_0_instrument_name	String	HROV Nereus
attribute	NC_GLOBAL	instruments_0_instrument_nid	String	706
attribute	NC_GLOBAL	instruments_1_dataset_instrument_nid	String	763892
attribute	NC_GLOBAL	instruments_1_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_1_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/LAB01/
attribute	NC_GLOBAL	instruments_1_instrument_name	String	Elemental Analyzer
attribute	NC_GLOBAL	instruments_1_instrument_nid	String	546339
attribute	NC_GLOBAL	instruments_1_supplied_name	String	Fisons NA 1500 elemental analyzer
attribute	NC_GLOBAL	instruments_2_dataset_instrument_description	String	Push cores were borrowed from the National Deep Submergence Facility to be able to standardize results. The push cores were 6.35cm diameter).
attribute	NC_GLOBAL	instruments_2_dataset_instrument_nid	String	763882
attribute	NC_GLOBAL	instruments_2_description	String	Capable of being performed in numerous environments, push coring is just as it sounds. Push coring is simply pushing the core barrel (often an aluminum or polycarbonate tube) into the sediment by hand. A push core is useful in that it causes very little disturbance to the more delicate upper layers of a sub-aqueous sediment. Description obtained from: http://web.whoi.edu/coastal-group/about/how-we-work/field-methods/coring/
attribute	NC_GLOBAL	instruments_2_instrument_name	String	Push Corer
attribute	NC_GLOBAL	instruments_2_instrument_nid	String	628287
attribute	NC_GLOBAL	keywords	String	bco, bco-dmo, biological, chemical, core, cruise, cruise_id, data, dataset, date, dive, dmo, erddap, horizon, horizon_core_cm, management, NiWa_id, oceanography, office, preliminary, sample, site, station, time
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/763873/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/763873
attribute	NC_GLOBAL	param_mapping	String	{'763873': {}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/763873/parameters
attribute	NC_GLOBAL	people_0_affiliation	String	Woods Hole Oceanographic Institution
attribute	NC_GLOBAL	people_0_affiliation_acronym	String	WHOI
attribute	NC_GLOBAL	people_0_person_name	String	Timothy M. Shank
attribute	NC_GLOBAL	people_0_person_nid	String	536454
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 Hawaii at Manoa
attribute	NC_GLOBAL	people_1_affiliation_acronym	String	SOEST
attribute	NC_GLOBAL	people_1_person_name	String	Jeffrey C. Drazen
attribute	NC_GLOBAL	people_1_person_nid	String	491313
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	Whitman College
attribute	NC_GLOBAL	people_2_person_name	String	Paul Yancey
attribute	NC_GLOBAL	people_2_person_nid	String	536477
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	Woods Hole Oceanographic Institution
attribute	NC_GLOBAL	people_3_affiliation_acronym	String	WHOI BCO-DMO
attribute	NC_GLOBAL	people_3_person_name	String	Nancy Copley
attribute	NC_GLOBAL	people_3_person_nid	String	50396
attribute	NC_GLOBAL	people_3_role	String	BCO-DMO Data Manager
attribute	NC_GLOBAL	people_3_role_type	String	related
attribute	NC_GLOBAL	project	String	HADES
attribute	NC_GLOBAL	projects_0_acronym	String	HADES
attribute	NC_GLOBAL	projects_0_description	String	Extracted from the NSF award abstract: Severe technical challenges associated with the extremes of hydrostatic pressure have prevented major advances in hadal ecological studies, and relegated hadal systems to among the most poorly investigated habitats on Earth. Through this project, Hadal Ecosystems Studies (HADES) program, PIs will determine the composition and distribution of hadal species, the role of hadal pressures (piezolyte concentrations, enzyme function under pressure), food supply (distribution of POC with the abundance and biomass of trench organisms, and metabolic rates/energetic demand), and depth/topography (genetic divergence and spatial connectivity of populations) have on impacting deep-ocean community structure. This project will examine these factors using the world's first full-ocean depth hybrid remotely operated vehicle (HROV) in conjunction with the only full-ocean depth imaging lander (Hadal-Lander). This project will provide the first seafloor data and samples in one of the world's best, yet little known trenches- the Kermadec Trench (SW Pacific Ocean).  Megafaunal community structure and the relationship between POC and benthic bacterial biomass will be examined as a function of depth and location by systematic high-definition imaging and sediment/faunal sampling transects from abyssal to full trench depths both along and perpendicular to the trench axis. Population genetic approaches will provide levels of genetic divergence and evolutionarily independent lineages to assess the role of depth and topography in trenches and their adjacent abyssal plain in promoting the formation of species. Physiological constraints will be investigated by examining in-situ respiration of selected fauna and tissue concentrations of such protein stabilizers as trimethylamine oxide (TMAO), and the structural adaptations of macromolecules.  Image of NEREUS Deployment Sites. [click on the image to view a larger version]
attribute	NC_GLOBAL	projects_0_end_date	String	2015-08
attribute	NC_GLOBAL	projects_0_geolocation	String	Kermadec Trench adjacent to New Zealand: approximately 37 12.75 S and 178 51.43 E to 31 51.29 S and 176 49.07 W
attribute	NC_GLOBAL	projects_0_name	String	Controls on Hadal Megafaunal Community Structure: a Systematic Examination of Pressure, Food Supply, and Topography
attribute	NC_GLOBAL	projects_0_project_nid	String	536452
attribute	NC_GLOBAL	projects_0_project_website	String	https://www.whoi.edu/hades/
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	subsetVariables	String	cruise_id
attribute	NC_GLOBAL	summary	String	This dataset contains the sample log for HADESK bacterial biomarker phospholipid fatty acid (PLFA) content from sediment push cores. The same samples were also used for the organic matter (OM) analysis. Samples were taken in the Kermadec Trench in the Southwest Pacific, 4000 to ~10,000m from the RV/ Thomas G. Thompson during cruise TN309, May 2014.
attribute	NC_GLOBAL	title	String	[HADES-K bacterial biomarker phospholipid fatty acid (PLFA)] - Sample log for HADESK bacterial biomarker phospholipid fatty acid content from sediment cores collected on R/V Thomas G. Thompson cruise TN309, May 2014 (Controls on Hadal Megafaunal Community Structure: a Systematic Examination of Pressure, Food Supply, and Topography)
attribute	NC_GLOBAL	version	String	1
attribute	NC_GLOBAL	xml_source	String	osprey2erddap.update_xml() v1.3
variable	sample		byte
attribute	sample	_FillValue	byte	127
attribute	sample	actual_range	byte	1, 81
attribute	sample	bcodmo_name	String	sample
attribute	sample	description	String	sample identifier
attribute	sample	long_name	String	Sample
attribute	sample	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P02/current/ACYC/
attribute	sample	units	String	unitless
variable	cruise_id		String
attribute	cruise_id	bcodmo_name	String	cruise_id
attribute	cruise_id	description	String	cruise identifier
attribute	cruise_id	long_name	String	Cruise Id
attribute	cruise_id	units	String	unitless
variable	dive		String
attribute	dive	bcodmo_name	String	dive_id
attribute	dive	description	String	dive identifier
attribute	dive	long_name	String	Dive
attribute	dive	units	String	unitless
variable	site		String
attribute	site	bcodmo_name	String	site
attribute	site	description	String	site name
attribute	site	long_name	String	Site
attribute	site	units	String	unitless
variable	date_utc		String
attribute	date_utc	bcodmo_name	String	date_utc
attribute	date_utc	description	String	sample collection date in UTC
attribute	date_utc	long_name	String	Date Utc
attribute	date_utc	source_name	String	date_utc
attribute	date_utc	time_precision	String	1970-01-01
attribute	date_utc	units	String	unitless
variable	station		String
attribute	station	bcodmo_name	String	station
attribute	station	description	String	station identifier
attribute	station	long_name	String	Station
attribute	station	units	String	unitless
variable	core		String
attribute	core	bcodmo_name	String	core_id
attribute	core	description	String	core identifier
attribute	core	long_name	String	Core
attribute	core	units	String	unitless
variable	NiWa_id		String
attribute	NiWa_id	bcodmo_name	String	sample
attribute	NiWa_id	description	String	National Institute for Water and Atmosphere identifier
attribute	NiWa_id	long_name	String	Ni Wa Id
attribute	NiWa_id	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P02/current/ACYC/
attribute	NiWa_id	units	String	unitless
variable	horizon_core_cm		String
attribute	horizon_core_cm	bcodmo_name	String	depth_core
attribute	horizon_core_cm	description	String	depth horizon in core
attribute	horizon_core_cm	long_name	String	Horizon Core Cm
attribute	horizon_core_cm	units	String	centimeters

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.