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Title Sum-
Institution Dataset ID
     data   graph     files  public 14C dates from core PC1 collected from T Lake, Palau in September 2013    ?     I   M   background (external link) RSS Subscribe BCO-DMO bcodmo_dataset_771658

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 Sediment core PTLN\u2010PC1 was collected September 2013 in sequential
1\u2010m sections using a 5\u2010cm\u2010diameter Colinvaux\u2010Vohnout
Livingstone\u2010type rod\u2010operated piston corer (Geocore, Columbus,
Ohio). Each section was sealed in the field and refrigerated at 4 \u00b0C
until core splitting and subsampling.

Thirteen macrofossils were pulled from the core and were pretreated with an
acid\u2010base\u2010acid procedure according to the protocol in Brock et al.
(2010) to remove extraneous organic materials. Accelerator mass spectrometry
14C dating was performed by DirectAMS in Bothell, WA, United States.
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 (external link)
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 14C dates from core PC1, T Lake, Palau
PI: Julian P. Sachs (University of Washington)
Co-PI: Michael Dawson (UC Merced)
Version date: 19-June-2019
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/ (external link)
attribute NC_GLOBAL data_source String extract_data_as_tsv version 2.3 19 Dec 2019
attribute NC_GLOBAL date_created String 2019-06-21T18:00:10Z
attribute NC_GLOBAL date_modified String 2019-06-24T17:18:44Z
attribute NC_GLOBAL defaultDataQuery String &time<now
attribute NC_GLOBAL doi String 10.1575/1912/bco-dmo.771658.1
attribute NC_GLOBAL infoUrl String https://www.bco-dmo.org/dataset/771658 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL instruments_0_acronym String Piston Corer
attribute NC_GLOBAL instruments_0_dataset_instrument_description String Colinvaux‐Vohnout Livingstone‐type rod‐operated piston corer (Geocore, Columbus, Ohio). Hand-operated sediment coring device.
attribute NC_GLOBAL instruments_0_dataset_instrument_nid String 771668
attribute NC_GLOBAL instruments_0_description String The piston corer is a type of bottom sediment sampling device. A long, heavy tube is plunged into the seafloor to extract samples of mud sediment. A piston corer uses a "free fall" of the coring rig to achieve a greater initial force on impact than gravity coring. A sliding piston inside the core barrel reduces inside wall friction with the sediment and helps to evacuate displaced water from the top of the corer. A piston corer is capable of extracting core samples up to 90 feet in length.
attribute NC_GLOBAL instruments_0_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/51/ (external link)
attribute NC_GLOBAL instruments_0_instrument_name String Piston Corer
attribute NC_GLOBAL instruments_0_instrument_nid String 519
attribute NC_GLOBAL instruments_0_supplied_name String Colinvaux‐Vohnout Livingstone‐type rod‐operated piston corer
attribute NC_GLOBAL instruments_1_acronym String AMS
attribute NC_GLOBAL instruments_1_dataset_instrument_description String Accelerator mass spectrometry 14C dating was performed by DirectAMS in Bothell, WA, United States.
attribute NC_GLOBAL instruments_1_dataset_instrument_nid String 771669
attribute NC_GLOBAL instruments_1_description String An AMS measures "long-lived radionuclides that occur naturally in our environment. AMS uses a particle accelerator in conjunction with ion sources, large magnets, and detectors to separate out interferences and count single atoms in the presence of 1x1015 (a thousand million million) stable atoms, measuring the mass-to-charge ratio of the products of sample molecule disassociation, atom ionization and ion acceleration." AMS permits ultra low-level measurement of compound concentrations and isotope ratios that traditional alpha-spectrometry cannot provide. More from Purdue University: http://www.physics.purdue.edu/primelab/introduction/ams.html
attribute NC_GLOBAL instruments_1_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/LAB17/ (external link)
attribute NC_GLOBAL instruments_1_instrument_name String Accelerator Mass Spectrometer
attribute NC_GLOBAL instruments_1_instrument_nid String 527
attribute NC_GLOBAL instruments_1_supplied_name String Accelerator mass spectrometry
attribute NC_GLOBAL keywords String bco, bco-dmo, biological, calib, calib_14C_95_lo, calib_14C_95_up, chemical, data, dataset, dated, depth, depth_top, dmo, erddap, error, labcode, management, mat, mat_dated, oceanography, office, preliminary, raw, raw_14C, raw_14C_err
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/771658/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/771658 (external link)
attribute NC_GLOBAL param_mapping String {'771658': {}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/771658/parameters (external link)
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 California-Merced
attribute NC_GLOBAL people_1_affiliation_acronym String UC Merced
attribute NC_GLOBAL people_1_person_name String Michael N Dawson
attribute NC_GLOBAL people_1_person_nid String 51577
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/ (external link)
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 standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL summary String 14C dates from core PC1 collected from T Lake, Palau in September 2013 using a Colinvaux\u2010Vohnout Livingstone\u2010type rod\u2010operated piston corer.
attribute NC_GLOBAL title String 14C dates from core PC1 collected from T Lake, Palau in September 2013
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.3
variable Labcode   String  
attribute Labcode bcodmo_name String sample
attribute Labcode description String sample identification used by 14C laboratory
attribute Labcode long_name String Labcode
attribute Labcode nerc_identifier String https://vocab.nerc.ac.uk/collection/P02/current/ACYC/ (external link)
attribute Labcode units String unitless
variable depth_top   float  
attribute depth_top _FillValue float NaN
attribute depth_top actual_range float 81.0, 1143.0
attribute depth_top bcodmo_name String depth_core
attribute depth_top colorBarMaximum double 8000.0
attribute depth_top colorBarMinimum double -8000.0
attribute depth_top colorBarPalette String TopographyDepth
attribute depth_top description String composite depth, top of 1 cm interval associated with fossil
attribute depth_top long_name String Depth
attribute depth_top standard_name String depth
attribute depth_top units String centimeters (cm)
variable mat_dated   String  
attribute mat_dated bcodmo_name String sample_descrip
attribute mat_dated description String material dated
attribute mat_dated long_name String Mat Dated
attribute mat_dated units String unitless
variable raw_14C   short  
attribute raw_14C _FillValue short 32767
attribute raw_14C actual_range short -799, 8220
attribute raw_14C bcodmo_name String C14_age
attribute raw_14C description String conventional radiocarbon age, relative to 1950
attribute raw_14C long_name String Raw 14 C
attribute raw_14C units String years
variable raw_14C_err   byte  
attribute raw_14C_err _FillValue byte 127
attribute raw_14C_err actual_range byte 23, 45
attribute raw_14C_err bcodmo_name String C14_age
attribute raw_14C_err description String standard error, radiocarbon age
attribute raw_14C_err long_name String Raw 14 C Err
attribute raw_14C_err units String years
variable calib_14C_95_lo   short  
attribute calib_14C_95_lo _FillValue short 32767
attribute calib_14C_95_lo actual_range short -766, 9032
attribute calib_14C_95_lo bcodmo_name String C14_age
attribute calib_14C_95_lo description String calibrated age, 95% confidence interval lower bound
attribute calib_14C_95_lo long_name String Calib 14 C 95 Lo
attribute calib_14C_95_lo units String years
variable calib_14C_95_up   short  
attribute calib_14C_95_up _FillValue short 32767
attribute calib_14C_95_up actual_range short 25, 9293
attribute calib_14C_95_up bcodmo_name String C14_age
attribute calib_14C_95_up description String calibrated age, 95% confidence interval upper bound
attribute calib_14C_95_up long_name String Calib 14 C 95 Up
attribute calib_14C_95_up units String years

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.

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