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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 | [Hg Isotopes Zooplankton] - Mercury stable isotope values for zooplankton collected during R/ V Kilo Moana cruises KM1418 and KM1506 around Station ALOHA in 2014 and 2015 (Collaborative Research: Isotopic insights to mercury in marine food webs and how it varies with ocean biogeochemistry) | I M | background | BCO-DMO | bcodmo_dataset_788512 |
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 | Zooplankton was collected using a multiple opening-closing net and environmental sensing system (MOCNESS); cod ends were fitted with a 200 micron mesh. Onboard, zooplankton were wet-sieved in filter seawater using different size mesh sieves and frozen at -20 (Degree-Celsius). The zooplankton was collected at Station ALOHA during the KM1418 and KM1506 research cruises. In the summer cruise, each tow collected material from 9 depth intervals spanning the ocean surface to 1500 m (0-50 m, 50-100 m, 100-150 m, 150-200 m, 200-300 m, 300-500 m, 500-700 m, 700-1000 m, 1000-1500 m). In the spring, four separate net tows were conducted to collected additional samples from a single depth interval (500-700 m). This was done to provide enough sample material. For total Hg (THg) determination about 10 mg of zooplankton was digested in reverse aqua regis overnight. For THg isotope determination zooplankton samples were combusted in a two-stage combustion furnace and Hg(0) g was trapped in a 1% KMnO4 solution. The 1% KMnO4 solution was analyzed for Hg stable isotope composition using a multiple collector inductively coupled plasma mass spectrometer. All the methods are detailed in Motta et al., (2019). |
attribute | NC_GLOBAL | awards_0_award_nid | String | 560590 |
attribute | NC_GLOBAL | awards_0_award_number | String | OCE-1433846 |
attribute | NC_GLOBAL | awards_0_data_url | String | http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1433846 |
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 | cdm_data_type | String | Other |
attribute | NC_GLOBAL | comment | String | Mercury stable isotope values for zooplankton PI: Joel D. Blum (University of Michigan) Co-PIs: Brian N. Popp, Kanesa Seraphin, Jeffrey C. Drazen (University of Hawaii), & Claudia Benitez-Nelson (University of South Carolina) Version date: 21-Feb-2020 |
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 | 2020-01-27T19:41:06Z |
attribute | NC_GLOBAL | date_modified | String | 2020-02-24T15:37:11Z |
attribute | NC_GLOBAL | defaultDataQuery | String | &time<now |
attribute | NC_GLOBAL | doi | String | 10.1575/1912/bco-dmo.788512.1 |
attribute | NC_GLOBAL | geospatial_vertical_max | double | 1250.0 |
attribute | NC_GLOBAL | geospatial_vertical_min | double | 25.0 |
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/788512 |
attribute | NC_GLOBAL | institution | String | BCO-DMO |
attribute | NC_GLOBAL | instruments_0_acronym | String | MOCNESS |
attribute | NC_GLOBAL | instruments_0_dataset_instrument_description | String | Zooplankton was collected using a multiple opening-closing net and environmental sensing system (MOCNESS). The cod ends were fitted with a 200 micron mesh. |
attribute | NC_GLOBAL | instruments_0_dataset_instrument_nid | String | 788567 |
attribute | NC_GLOBAL | instruments_0_description | String | The Multiple Opening/Closing Net and Environmental Sensing System or MOCNESS is a family of net systems based on the Tucker Trawl principle. There are currently 8 different sizes of MOCNESS in existence which are designed for capture of different size ranges of zooplankton and micro-nekton Each system is designated according to the size of the net mouth opening and in two cases, the number of nets it carries. The original MOCNESS (Wiebe et al, 1976) was a redesigned and improved version of a system described by Frost and McCrone (1974).(from MOCNESS manual) This designation is used when the specific type of MOCNESS (number and size of nets) was not specified by the contributing investigator. |
attribute | NC_GLOBAL | instruments_0_instrument_external_identifier | String | https://vocab.nerc.ac.uk/collection/L22/current/NETT0097/ |
attribute | NC_GLOBAL | instruments_0_instrument_name | String | MOCNESS |
attribute | NC_GLOBAL | instruments_0_instrument_nid | String | 511 |
attribute | NC_GLOBAL | instruments_1_acronym | String | ICP Mass Spec |
attribute | NC_GLOBAL | instruments_1_dataset_instrument_description | String | multicollector inductively coupled plasma mass spectrometer (MC-ICP-MS; Nu instruments) |
attribute | NC_GLOBAL | instruments_1_dataset_instrument_nid | String | 788566 |
attribute | NC_GLOBAL | instruments_1_description | String | An ICP Mass Spec is an instrument that passes nebulized samples into an inductively-coupled gas plasma (8-10000 K) where they are atomized and ionized. Ions of specific mass-to-charge ratios are quantified in a quadrupole mass spectrometer. |
attribute | NC_GLOBAL | instruments_1_instrument_external_identifier | String | https://vocab.nerc.ac.uk/collection/L05/current/LAB15/ |
attribute | NC_GLOBAL | instruments_1_instrument_name | String | Inductively Coupled Plasma Mass Spectrometer |
attribute | NC_GLOBAL | instruments_1_instrument_nid | String | 530 |
attribute | NC_GLOBAL | instruments_1_supplied_name | String | MC-ICP-MS |
attribute | NC_GLOBAL | keywords | String | bco, bco-dmo, biological, chemical, cruise, Cruise_Number, d199, D199Hg, d200, D200Hg, d201, D201Hg, d202, d202Hg, d204, D204Hg, data, dataset, date, day, Day_or_Night, Day_Zooplankton_ID, depth, dmo, erddap, fraction, management, mean, Mean_Depth, night, number, oceanography, office, preliminary, size, Size_fraction, zooplankton |
attribute | NC_GLOBAL | license | String | https://www.bco-dmo.org/dataset/788512/license |
attribute | NC_GLOBAL | metadata_source | String | https://www.bco-dmo.org/api/dataset/788512 |
attribute | NC_GLOBAL | param_mapping | String | {'788512': {'Mean_Depth': 'flag - depth'}} |
attribute | NC_GLOBAL | parameter_source | String | https://www.bco-dmo.org/mapserver/dataset/788512/parameters |
attribute | NC_GLOBAL | people_0_affiliation | String | University of Michigan |
attribute | NC_GLOBAL | people_0_person_name | String | Joel D. Blum |
attribute | NC_GLOBAL | people_0_person_nid | String | 560587 |
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 South Carolina |
attribute | NC_GLOBAL | people_1_person_name | String | Claudia R. Benitez-Nelson |
attribute | NC_GLOBAL | people_1_person_nid | String | 51092 |
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 | University of Hawaii at Manoa |
attribute | NC_GLOBAL | people_2_affiliation_acronym | String | SOEST |
attribute | NC_GLOBAL | people_2_person_name | String | Jeffrey C. Drazen |
attribute | NC_GLOBAL | people_2_person_nid | String | 491313 |
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 | University of Hawaii at Manoa |
attribute | NC_GLOBAL | people_3_affiliation_acronym | String | SOEST |
attribute | NC_GLOBAL | people_3_person_name | String | Brian N. Popp |
attribute | NC_GLOBAL | people_3_person_nid | String | 51093 |
attribute | NC_GLOBAL | people_3_role | String | Co-Principal Investigator |
attribute | NC_GLOBAL | people_3_role_type | String | originator |
attribute | NC_GLOBAL | people_4_affiliation | String | University of Hawaii |
attribute | NC_GLOBAL | people_4_person_name | String | Kanesa Seraphin |
attribute | NC_GLOBAL | people_4_person_nid | String | 537131 |
attribute | NC_GLOBAL | people_4_role | String | Co-Principal Investigator |
attribute | NC_GLOBAL | people_4_role_type | String | originator |
attribute | NC_GLOBAL | people_5_affiliation | String | Woods Hole Oceanographic Institution |
attribute | NC_GLOBAL | people_5_affiliation_acronym | String | WHOI BCO-DMO |
attribute | NC_GLOBAL | people_5_person_name | String | Shannon Rauch |
attribute | NC_GLOBAL | people_5_person_nid | String | 51498 |
attribute | NC_GLOBAL | people_5_role | String | BCO-DMO Data Manager |
attribute | NC_GLOBAL | people_5_role_type | String | related |
attribute | NC_GLOBAL | project | String | Hg_Biogeochemistry |
attribute | NC_GLOBAL | projects_0_acronym | String | Hg_Biogeochemistry |
attribute | NC_GLOBAL | projects_0_description | String | NSF award abstract: Mercury is a pervasive trace element that exists in several states in the marine environment, including monomethylmercury (MMHg), a neurotoxin that bioaccumulates in marine organisms and poses a human health threat. Understanding the fate of mercury in the ocean and resulting impacts on ocean food webs requires understanding the mechanisms controlling the depths at which mercury chemical transformations occur. Preliminary mercury analyses on nine species of marine fish from the North Pacific Ocean indicated that intermediate waters are an important entry point for MMHg into open ocean food webs. To elucidate the process controlling this, researchers will examine mercury dynamics in regions with differing vertical dissolved oxygen profiles, which should influence depths of mercury transformation. Results of the study will aid in a better understanding of the pathways by which mercury enters the marine food chain and can ultimately impact humans. This project will provide training for graduate and undergraduate students, and spread awareness on oceanic mercury through public outreach and informal science programs. Mercury isotopic variations can provide insight into a wide variety of environmental processes. Isotopic compositions of mercury display mass-dependent fractionation (MDF) during most biotic and abiotic chemical reactions and mass-independent fractionation (MIF) during photochemical radical pair reactions. The unusual combination of MDF and MIF can provide information on reaction pathways and the biogeochemical history of mercury. Results from preliminary research provide strong evidence that net MMHg formation occurred below the surface mixed layer in the pycnocline and suggested that MMHg in low oxygen intermediate waters is an important entry point for mercury into open ocean food webs. These findings highlight the critical need to understand how MMHg levels in marine biota will respond to changes in atmospheric mercury emissions, deposition of inorganic mercury to the surface ocean, and hypothesized future expansion of oxygen minimum zones. Using field collections across ecosystems with contrasting biogeochemistry and mercury isotope fractionation experiments researchers will fill key knowledge gaps in mercury biogeochemistry. Results of the proposed research will enable scientists to assess the biogeochemical controls on where in the water column mercury methylation and demethylation likely occur. Related background publication with supplemental data section: Joel D. Blum, Brian N. Popp, Jeffrey C. Drazen, C. Anela Choy & Marcus W. Johnson. 2013. Methylmercury production below the mixed layer in the North Pacific Ocean. Nature Geoscience 6, 879–884. doi:10.1038/ngeo1918 |
attribute | NC_GLOBAL | projects_0_end_date | String | 2017-07 |
attribute | NC_GLOBAL | projects_0_geolocation | String | Pacific Subtropical Gyre, Station ALOHA 22.75N 158W; equatorial Pacific (10N 155W, 5N 155W) |
attribute | NC_GLOBAL | projects_0_name | String | Collaborative Research: Isotopic insights to mercury in marine food webs and how it varies with ocean biogeochemistry |
attribute | NC_GLOBAL | projects_0_project_nid | String | 560580 |
attribute | NC_GLOBAL | projects_0_start_date | String | 2014-08 |
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 | This dataset contains the mercury stable isotope ratios collected in zooplankton during R/V Kilo Moana cruises around Station ALOHA (22.75N, 158W). These data were published in Motta et al., (2019) with supporting information. |
attribute | NC_GLOBAL | title | String | [Hg Isotopes Zooplankton] - Mercury stable isotope values for zooplankton collected during R/V Kilo Moana cruises KM1418 and KM1506 around Station ALOHA in 2014 and 2015 (Collaborative Research: Isotopic insights to mercury in marine food webs and how it varies with ocean biogeochemistry) |
attribute | NC_GLOBAL | version | String | 1 |
attribute | NC_GLOBAL | xml_source | String | osprey2erddap.update_xml() v1.3 |
variable | Cruise_Number | String | ||
attribute | Cruise_Number | bcodmo_name | String | cruise_id |
attribute | Cruise_Number | description | String | Cruise ID number |
attribute | Cruise_Number | long_name | String | Cruise Number |
attribute | Cruise_Number | units | String | unitless |
variable | Date | int | ||
attribute | Date | _FillValue | int | 2147483647 |
attribute | Date | actual_range | int | 20140902, 20150502 |
attribute | Date | bcodmo_name | String | date |
attribute | Date | description | String | Sampling date (UTC); format: yyyymmdd |
attribute | Date | long_name | String | Date |
attribute | Date | nerc_identifier | String | https://vocab.nerc.ac.uk/collection/P01/current/ADATAA01/ |
attribute | Date | units | String | unitless |
variable | Day_or_Night | String | ||
attribute | Day_or_Night | bcodmo_name | String | time_of_day |
attribute | Day_or_Night | description | String | Time of day when sampling occurred |
attribute | Day_or_Night | long_name | String | Day Or Night |
attribute | Day_or_Night | units | String | unitless |
variable | Day_Zooplankton_ID | String | ||
attribute | Day_Zooplankton_ID | bcodmo_name | String | sample |
attribute | Day_Zooplankton_ID | description | String | Sample ID |
attribute | Day_Zooplankton_ID | long_name | String | Day Zooplankton ID |
attribute | Day_Zooplankton_ID | nerc_identifier | String | https://vocab.nerc.ac.uk/collection/P02/current/ACYC/ |
attribute | Day_Zooplankton_ID | units | String | unitless |
variable | depth | double | ||
attribute | depth | _CoordinateAxisType | String | Height |
attribute | depth | _CoordinateZisPositive | String | down |
attribute | depth | _FillValue | double | NaN |
attribute | depth | actual_range | double | 25.0, 1250.0 |
attribute | depth | axis | String | Z |
attribute | depth | bcodmo_name | String | depth |
attribute | depth | description | String | Mean depth of sample |
attribute | depth | ioos_category | String | Location |
attribute | depth | long_name | String | Mean 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 | Size_fraction | String | ||
attribute | Size_fraction | bcodmo_name | String | samp_fraction |
attribute | Size_fraction | description | String | Size fraction |
attribute | Size_fraction | long_name | String | Size Fraction |
attribute | Size_fraction | units | String | millimeters (mm) |
variable | d202Hg | float | ||
attribute | d202Hg | _FillValue | float | NaN |
attribute | d202Hg | actual_range | float | -0.52, 0.28 |
attribute | d202Hg | bcodmo_name | String | unknown |
attribute | d202Hg | description | String | Stable isotope ratio; δ202Hg |
attribute | d202Hg | long_name | String | D202 HG |
attribute | d202Hg | units | String | per mil (‰) |
variable | D199Hg | float | ||
attribute | D199Hg | _FillValue | float | NaN |
attribute | D199Hg | actual_range | float | -0.26, 0.04 |
attribute | D199Hg | bcodmo_name | String | unknown |
attribute | D199Hg | description | String | Stable isotope ratio; Δ199Hg |
attribute | D199Hg | long_name | String | D199 HG |
attribute | D199Hg | units | String | per mil (‰) |
variable | D201Hg | float | ||
attribute | D201Hg | _FillValue | float | NaN |
attribute | D201Hg | actual_range | float | 0.07, 2.39 |
attribute | D201Hg | bcodmo_name | String | unknown |
attribute | D201Hg | description | String | Stable isotope ratio; Δ201Hg |
attribute | D201Hg | long_name | String | D201 HG |
attribute | D201Hg | units | String | per mil (‰) |
variable | D200Hg | float | ||
attribute | D200Hg | _FillValue | float | NaN |
attribute | D200Hg | actual_range | float | -0.11, 0.26 |
attribute | D200Hg | bcodmo_name | String | unknown |
attribute | D200Hg | description | String | Stable isotope ratio; Δ200Hg |
attribute | D200Hg | long_name | String | D200 HG |
attribute | D200Hg | units | String | per mil (‰) |
variable | D204Hg | float | ||
attribute | D204Hg | _FillValue | float | NaN |
attribute | D204Hg | actual_range | float | 0.24, 2.78 |
attribute | D204Hg | bcodmo_name | String | unknown |
attribute | D204Hg | description | String | Stable isotope ratio; Δ204Hg |
attribute | D204Hg | long_name | String | D204 HG |
attribute | D204Hg | 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.