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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 | Institution | Dataset ID |
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data | graph | files | public | [T Lake 1200-yr Reconstruction] - Record of abundance and δ2H of dinosterol in down core lake sediments from T Lake, Palau collected in September 2013 (Do Parallel Patterns Arise from Parallel Processes?) | I M | background | BCO-DMO | bcodmo_dataset_771344 |
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 | Methods are as per \"Southward Shift of the Pacific ITCZ During the Holocene\" in Paleoceanography and Paleoclimatology, volume 33, pages 1383-1395 (Sachs et al. 2018). Sediment core PTLN\u2010PC1 was collected September 2013 in sequential 1m sections using a 5cm\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. Sample ages were linearly interpolated from calibrated 14C dates (see dataset \"T Lake PC1 Chronology\") using the Clam 2.2 (Blaauw, 2010) software package. Sediment subsamples were transferred to combusted glass vials, frozen, then freeze dried. Lipids were extracted with 10% methanol in dichloromethane on an accelerated solvent extractor (ASE 200; Dionex) at 100\u00b0C and 1500 psi with three 5\u2010min static cycles. Lipid extracts were saponified using 2:1 1N KOH in methanol:water at 70\u00b0C overnight. Saponified extracts were acidified to pH ~1 with HCl, neutral lipids extracted from the water/methanol phase with hexane, and the hexane extracts washed with water. Lipid extracts were acetylated at 70\u00b0C for 30 min in a mixture of 20 \u03bcl acetic anhydride of known isotopic composition and 20 \u03bcl pyridine. Sterol acetates were then isolated via preparative high\u2010performance liquid chromatography as per the methods in Nelson and Sachs (2013, 2014). Extracts were taken up in 25 \u03bcl of 2:1 dichloromethane:methanol and the complete volume injected onto an Agilent 1100 high\u2010performance liquid chromatography system equipped with a Zorbax Eclipse XDB C18 column; after an initial elution of polar compounds in 5:95 methanol:acetonitrile, sterol acetates were eluted with an isocratic mobile phase of 5:10:85 methanol:ethyl acetate:acetonitrile. Aliquots (5%) of each sample were injected on an Agilent 6890N GC with flame ionization detector and PTV inlet, equipped with an Agilent VF\u201017 ms column (60 m \u00d7 0.32 mm \u00d7 0.25 \u03bcm), in splitless mode at 300\u00b0C using helium carrier gas at 1.5 ml/min. The initial oven temperature was 110\u00b0C, followed by a ramp to 320\u00b0C at 5\u00b0C/min, and was then held for 20 min. Detector response was determined via an \u03b1\u2010cholestane internal standard. Dinosterol fluxes were calculated from the product of dinosterol concentration per gram dry weight of sediment, the linear sediment accumulation rate, and the dry bulk density of sediment. Uncertainty in dinosterol fluxes is conservatively assumed to be 25%. Hydrogen isotopes of dinosterol were measured via a modification of the procedures outlined in Nelson and Sachs (2013). Gas chromatography was conducted using a Thermo Trace GC Ultra equipped with a GC\u2010TC interface. Samples were injected into the 330\u00b0C inlet in splitless mode, with a 1.1 ml/min helium carrier flow through a VF\u201017 ms column (60 m \u00d7 0.25 mm \u00d7 0.25 \u03bcm). The oven temperature was held at 120\u00b0C for the 2\u2010min splitless time, increased to 260 \u00b0C at 20 \u00b0C/min, increased to 325\u00b0C at 1\u00b0C/min, and held for 10 min. The pyrolysis interface was operated at 1400\u00b0C, and the sample hydrogen admitted to a Thermo Delta V Plus isotope ratio mass spectrometer via open split. Isotope measurements are given as \u03b4\u00b2>H values relative to Vienna Standard Mean Ocean Water and calibrated via external isotope standards (Arndt Schimmelmann, Indiana University). Secondary corrections were determined based on time\u2010in\u2010sequence, retention time, and peak area, as necessary, on a sequence\u2010by\u2010sequence basis. Each sample analyzed at least three times. \u03b4\u00b2H values were corrected for added acetate hydrogen (\u2212124.4\u2030 \u00b1 8.1) via mass balance. Uncertainty is given as the standard deviation of these replicate analyses and uncertainty in the value of the known acetate, propagated through the mass balance calculation. |
attribute | NC_GLOBAL | awards_0_award_nid | String | 55103 |
attribute | NC_GLOBAL | awards_0_award_number | String | OCE-1241255 |
attribute | NC_GLOBAL | awards_0_data_url | String | http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1241255 |
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 | awards_1_award_nid | String | 55104 |
attribute | NC_GLOBAL | awards_1_award_number | String | OCE-1241247 |
attribute | NC_GLOBAL | awards_1_data_url | String | http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1241247 |
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 | cdm_data_type | String | Other |
attribute | NC_GLOBAL | comment | String | Abundance and d2H of dinosterol in down core lake sediments from 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/ |
attribute | NC_GLOBAL | data_source | String | extract_data_as_tsv version 2.3 19 Dec 2019 |
attribute | NC_GLOBAL | date_created | String | 2019-06-19T19:31:14Z |
attribute | NC_GLOBAL | date_modified | String | 2019-06-24T17:25:13Z |
attribute | NC_GLOBAL | defaultDataQuery | String | &time<now |
attribute | NC_GLOBAL | doi | String | 10.1575/1912/bco-dmo.771344.1 |
attribute | NC_GLOBAL | infoUrl | String | https://www.bco-dmo.org/dataset/771344 |
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 | Delta V Plus IRMS (Thermo). Isotope ratio mass spectrometer with continuous flow inlet, interfaced to open split in GC-TC interface. |
attribute | NC_GLOBAL | instruments_0_dataset_instrument_nid | String | 771407 |
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 | Delta V Plus IRMS (Thermo) |
attribute | NC_GLOBAL | instruments_1_acronym | String | HPLC |
attribute | NC_GLOBAL | instruments_1_dataset_instrument_description | String | 1100 HPLC system (Agilent). High performance liquid chromatograph, equipped with fraction collector for preparative separations. |
attribute | NC_GLOBAL | instruments_1_dataset_instrument_nid | String | 771404 |
attribute | NC_GLOBAL | instruments_1_description | String | A High-performance liquid chromatograph (HPLC) is a type of liquid chromatography used to separate compounds that are dissolved in solution. HPLC instruments consist of a reservoir of the mobile phase, a pump, an injector, a separation column, and a detector. Compounds are separated by high pressure pumping of the sample mixture onto a column packed with microspheres coated with the stationary phase. The different components in the mixture pass through the column at different rates due to differences in their partitioning behavior between the mobile liquid phase and the stationary phase. |
attribute | NC_GLOBAL | instruments_1_instrument_external_identifier | String | https://vocab.nerc.ac.uk/collection/L05/current/LAB11/ |
attribute | NC_GLOBAL | instruments_1_instrument_name | String | High Performance Liquid Chromatograph |
attribute | NC_GLOBAL | instruments_1_instrument_nid | String | 506 |
attribute | NC_GLOBAL | instruments_1_supplied_name | String | 1100 HPLC system (Agilent) |
attribute | NC_GLOBAL | instruments_2_acronym | String | Piston Corer |
attribute | NC_GLOBAL | instruments_2_dataset_instrument_description | String | Colinvaux‐Vohnout Livingstone‐type rod‐operated piston corer (Geocore, Columbus, Ohio). Hand-operated sediment coring device. |
attribute | NC_GLOBAL | instruments_2_dataset_instrument_nid | String | 771403 |
attribute | NC_GLOBAL | instruments_2_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_2_instrument_external_identifier | String | https://vocab.nerc.ac.uk/collection/L05/current/51/ |
attribute | NC_GLOBAL | instruments_2_instrument_name | String | Piston Corer |
attribute | NC_GLOBAL | instruments_2_instrument_nid | String | 519 |
attribute | NC_GLOBAL | instruments_2_supplied_name | String | Colinvaux‐Vohnout Livingstone‐type rod‐operated piston corer |
attribute | NC_GLOBAL | instruments_3_acronym | String | Gas Chromatograph |
attribute | NC_GLOBAL | instruments_3_dataset_instrument_description | String | 6890N GC (Agilent). Gas chromatograph equipped with flame ionization detector and PTV (programmable temperature volatilization) inlet. |
attribute | NC_GLOBAL | instruments_3_dataset_instrument_nid | String | 771405 |
attribute | NC_GLOBAL | instruments_3_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_3_instrument_external_identifier | String | https://vocab.nerc.ac.uk/collection/L05/current/LAB02/ |
attribute | NC_GLOBAL | instruments_3_instrument_name | String | Gas Chromatograph |
attribute | NC_GLOBAL | instruments_3_instrument_nid | String | 661 |
attribute | NC_GLOBAL | instruments_3_supplied_name | String | 6890N GC (Agilent) |
attribute | NC_GLOBAL | instruments_4_acronym | String | Gas Chromatograph |
attribute | NC_GLOBAL | instruments_4_dataset_instrument_description | String | Trace GC Ultra (Thermo). Gas chromatograph equipped with pyrolysis interface (GC-TC II) and split/splitless inlet. |
attribute | NC_GLOBAL | instruments_4_dataset_instrument_nid | String | 771406 |
attribute | NC_GLOBAL | instruments_4_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_4_instrument_external_identifier | String | https://vocab.nerc.ac.uk/collection/L05/current/LAB02/ |
attribute | NC_GLOBAL | instruments_4_instrument_name | String | Gas Chromatograph |
attribute | NC_GLOBAL | instruments_4_instrument_nid | String | 661 |
attribute | NC_GLOBAL | instruments_4_supplied_name | String | Trace GC Ultra (Thermo) |
attribute | NC_GLOBAL | instruments_5_acronym | String | ASE |
attribute | NC_GLOBAL | instruments_5_dataset_instrument_description | String | ASE 200 Accelerated Solvent Extractor (Dionex). High pressure/temperature solvent extractor. |
attribute | NC_GLOBAL | instruments_5_dataset_instrument_nid | String | 771409 |
attribute | NC_GLOBAL | instruments_5_description | String | Accelerated solvent extraction (ASE) is a method for extracting various chemicals from a complex solid or semisolid sample matrix. The process uses high temperature and pressure, which results in the extraction taking less time and requiring less solvent, and possibly also giving better analyte recovery, than traditional methods that use less extreme conditions. |
attribute | NC_GLOBAL | instruments_5_instrument_name | String | Accelerated Solvent Extractor |
attribute | NC_GLOBAL | instruments_5_instrument_nid | String | 771408 |
attribute | NC_GLOBAL | instruments_5_supplied_name | String | ASE 200 Accelerated Solvent Extractor (Dionex) |
attribute | NC_GLOBAL | keywords | String | 1sig, age, age_ybp, bco, bco-dmo, biological, chemical, conc, conc_dino, data, dataset, dbd, depth, depth_cm, dino, dino_2H, dino_2H_1sig, dmo, erddap, flux, flux_dino, management, oceanography, office, preliminary, ybp |
attribute | NC_GLOBAL | license | String | https://www.bco-dmo.org/dataset/771344/license |
attribute | NC_GLOBAL | metadata_source | String | https://www.bco-dmo.org/api/dataset/771344 |
attribute | NC_GLOBAL | param_mapping | String | {'771344': {}} |
attribute | NC_GLOBAL | parameter_source | String | https://www.bco-dmo.org/mapserver/dataset/771344/parameters |
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/ |
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 | Record of abundance and \u03b42H of dinosterol in down core lake sediments from T Lake, Palau collected in September 2013 using a 5cm\u2010diameter Colinvaux\u2010Vohnout Livingstone\u2010type rod\u2010operated piston corer. |
attribute | NC_GLOBAL | title | String | [T Lake 1200-yr Reconstruction] - Record of abundance and δ2H of dinosterol in down core lake sediments from T Lake, Palau collected in September 2013 (Do Parallel Patterns Arise from Parallel Processes?) |
attribute | NC_GLOBAL | version | String | 1 |
attribute | NC_GLOBAL | xml_source | String | osprey2erddap.update_xml() v1.3 |
variable | depth_cm | short | ||
attribute | depth_cm | _FillValue | short | 32767 |
attribute | depth_cm | actual_range | short | 85, 1240 |
attribute | depth_cm | bcodmo_name | String | depth_core |
attribute | depth_cm | colorBarMaximum | double | 8000.0 |
attribute | depth_cm | colorBarMinimum | double | -8000.0 |
attribute | depth_cm | colorBarPalette | String | TopographyDepth |
attribute | depth_cm | description | String | composite depth, top of 1cm sampling interval |
attribute | depth_cm | long_name | String | Depth |
attribute | depth_cm | standard_name | String | depth |
attribute | depth_cm | units | String | centimeters (cm) |
variable | age_ybp | short | ||
attribute | age_ybp | _FillValue | short | 32767 |
attribute | age_ybp | actual_range | short | 177, 10432 |
attribute | age_ybp | bcodmo_name | String | age |
attribute | age_ybp | description | String | linear interpolation of PTLN_PC1_chron via CLAM 2.2 |
attribute | age_ybp | long_name | String | Age Ybp |
attribute | age_ybp | units | String | years before present (yr bp) |
variable | conc_dino | float | ||
attribute | conc_dino | _FillValue | float | NaN |
attribute | conc_dino | actual_range | float | 0.4, 44.8 |
attribute | conc_dino | bcodmo_name | String | density |
attribute | conc_dino | description | String | dry bulk sediment density |
attribute | conc_dino | long_name | String | Conc Dino |
attribute | conc_dino | units | String | grams per cubic centimeter (g cm-3) |
variable | dbd | float | ||
attribute | dbd | _FillValue | float | NaN |
attribute | dbd | actual_range | float | 0.442, 1.906 |
attribute | dbd | bcodmo_name | String | Sed_dinosterol |
attribute | dbd | description | String | dinosterol per gram dry sediment |
attribute | dbd | long_name | String | DBD |
attribute | dbd | units | String | micrograms (ug) |
variable | flux_dino | float | ||
attribute | flux_dino | _FillValue | float | NaN |
attribute | flux_dino | actual_range | float | 0.1, 10.5 |
attribute | flux_dino | bcodmo_name | String | Sed_Lipids |
attribute | flux_dino | description | String | dinosterol per square centimeter per year |
attribute | flux_dino | long_name | String | Flux Dino |
attribute | flux_dino | units | String | micrograms per square centimeter per year (ug cm-2 yr-1) |
variable | dino_2H | short | ||
attribute | dino_2H | _FillValue | short | 32767 |
attribute | dino_2H | actual_range | short | -325, 999 |
attribute | dino_2H | bcodmo_name | String | d2H |
attribute | dino_2H | description | String | delta 2H (d2h) of dinosterol vs. SMOW |
attribute | dino_2H | long_name | String | Dino 2 H |
attribute | dino_2H | units | String | per mil (‰) |
variable | dino_2H_1sig | float | ||
attribute | dino_2H_1sig | _FillValue | float | NaN |
attribute | dino_2H_1sig | actual_range | float | 0.6, 999.0 |
attribute | dino_2H_1sig | bcodmo_name | String | d2H |
attribute | dino_2H_1sig | description | String | 1 standard deviation of replicate analyses of 2H_dino |
attribute | dino_2H_1sig | long_name | String | Dino 2 H 1sig |
attribute | dino_2H_1sig | 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.