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Title Sum-
Institution Dataset ID
     data   graph     files  public Bulk raw isotopic data from tissue samples from three species of tunas collected in the
eastern tropical Pacific Ocean onboard commercial tuna purse-seine vessels from 2003-2005
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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,.esriCsv,.geoJson
attribute NC_GLOBAL acquisition_description String Sampling Methodology: Three species of tuna, yellowfin (Ta.; Thunnus
albacares), skipjack (Kp.; Katsuwonus pelamis), and bigeye (To.; Thunnus
obesus) tunas, were sampled year-round during 2003-2005 by observers of the
Inter-American Tropical Tuna Commission onboard purse-seine fishing vessels.
Samples of dorsal white muscle were taken from each fish adjacent to the
second dorsal fin. Fish of uniform size were used for analysis: skipjack tuna
450-550 mm, yellowfin tuna 500-700 mm, and bigeye tuna 450-550 mm. All samples
were stored frozen until further processing in the laboratory.

Analytical Methodology: Methods are described in Hetherington et al. (2016).
Briefly: Isotopic analysis of bulk muscle tissue of the tunas was performed at
the University of Hawaii\u2019s Isotope Biogeochemistry Laboratory. Stable
isotope values of nitrogen were determined using an on-line carbon-nitrogen
analyzer coupled with an isotope ratio mass spectrometer (FinniganConFlo II
/Delta-Plus). Isotope values are reported in conventional delta-notation
relative to the international standards, atmospheric N2 and V-PDB, for N and
C, respectively. Mean accuracy of all stable isotopic analyses was <
+/-\u00a00.1 \u2030 (1 sd) based on triplicate analysis of in-house reference
materials (glycine standard and tuna muscle) with known \u03b415N values.
attribute NC_GLOBAL awards_0_award_nid String 616068
attribute NC_GLOBAL awards_0_award_number String OCE-1040810
attribute NC_GLOBAL awards_0_data_url String http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1040810 (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 Bulk Raw Isotopes From Three Tuna Species
PIs: Robert J. Olson (Inter-American Tropical Tuna Commission) & Brian N. Popp (University of Hawaii)
Co-PI: Jeffrey C. Drazen (University of Hawaii)
Version: 17 January 2017
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 2017-01-17T20:26:25Z
attribute NC_GLOBAL date_modified String 2020-01-21T21:37:39Z
attribute NC_GLOBAL defaultDataQuery String &amp;time&lt;now
attribute NC_GLOBAL doi String 10.1575/1912/bco-dmo.675055.1
attribute NC_GLOBAL Easternmost_Easting double -92.57
attribute NC_GLOBAL geospatial_lat_max double 8.9
attribute NC_GLOBAL geospatial_lat_min double -4.18
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double -92.57
attribute NC_GLOBAL geospatial_lon_min double -139.82
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL infoUrl String https://www.bco-dmo.org/dataset/675055 (external link)
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 Stable isotope values of nitrogen were determined using an on-line carbon-nitrogen analyzer coupled with an isotope ratio mass spectrometer (FinniganConFlo II/Delta-Plus).
attribute NC_GLOBAL instruments_0_dataset_instrument_nid String 675177
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/ (external link)
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 Isotope-ratio Mass Spectrometer
attribute NC_GLOBAL instruments_1_dataset_instrument_description String Stable isotope values of nitrogen were determined using an on-line carbon-nitrogen analyzer coupled with an isotope ratio mass spectrometer (FinniganConFlo II/Delta-Plus).
attribute NC_GLOBAL instruments_1_dataset_instrument_nid String 675176
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/ (external link)
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 Carbon-Nitrogen Analyzer
attribute NC_GLOBAL instruments_2_acronym String Purse-seine
attribute NC_GLOBAL instruments_2_dataset_instrument_description String Three species of tuna were collected using purse-seine gear from commercial fishing vessels.
attribute NC_GLOBAL instruments_2_dataset_instrument_nid String 675175
attribute NC_GLOBAL instruments_2_description String A purse seine is a large wall of netting deployed in a circle around an entire school of fish. The seine has floats along the top line with a lead line of chain along the bottom. Once a school of fish is located, a skiff pulls the seine into the water as the vessel encircles the school with the net. A cable running along the bottom is then pulled in, "pursing" the net closed on the bottom, preventing fish from escaping by swimming downward. The catch is harvested by bringing the net alongside the vessel and brailing the fish aboard.
attribute NC_GLOBAL instruments_2_instrument_name String Purse-seine Fishing Gear
attribute NC_GLOBAL instruments_2_instrument_nid String 675173
attribute NC_GLOBAL instruments_2_supplied_name String Purse-seine Fishing Gear
attribute NC_GLOBAL keywords String bco, bco-dmo, biological, chemical, d13, d13C, d15, d15N, data, dataset, date, dmo, erddap, latitude, length, longitude, management, molar, Molar_C_to_N, number, oceanography, office, preliminary, replicate, sample, sample_number, set, set_number, sex, species, time
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/675055/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/675055 (external link)
attribute NC_GLOBAL Northernmost_Northing double 8.9
attribute NC_GLOBAL param_mapping String {'675055': {'lat': 'master - latitude', 'lon': 'master - longitude'}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/675055/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String Inter-American Tropical Tuna Commission
attribute NC_GLOBAL people_0_affiliation_acronym String IATTC
attribute NC_GLOBAL people_0_person_name String Robert Olson
attribute NC_GLOBAL people_0_person_nid String 50553
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
attribute NC_GLOBAL people_1_person_name String Brian N. Popp
attribute NC_GLOBAL people_1_person_nid String 51093
attribute NC_GLOBAL people_1_role String Principal Investigator
attribute NC_GLOBAL people_1_role_type String originator
attribute NC_GLOBAL people_2_affiliation String University of Hawaii
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 Inter-American Tropical Tuna Commission
attribute NC_GLOBAL people_3_affiliation_acronym String IATTC
attribute NC_GLOBAL people_3_person_name String Robert Olson
attribute NC_GLOBAL people_3_person_nid String 50553
attribute NC_GLOBAL people_3_role String Contact
attribute NC_GLOBAL people_3_role_type String related
attribute NC_GLOBAL people_4_affiliation String Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_4_affiliation_acronym String WHOI BCO-DMO
attribute NC_GLOBAL people_4_person_name String Shannon Rauch
attribute NC_GLOBAL people_4_person_nid String 51498
attribute NC_GLOBAL people_4_role String BCO-DMO Data Manager
attribute NC_GLOBAL people_4_role_type String related
attribute NC_GLOBAL project String CAMEO_Trophic_Position
attribute NC_GLOBAL projects_0_acronym String CAMEO_Trophic_Position
attribute NC_GLOBAL projects_0_description String (From NSF Award Abstract)
Evidence increasingly demonstrates that selective removal of marine life can induce restructuring of marine food webs. Trophic structure is the central component of mass balance models, widely used tools to evaluate fisheries in an ecosystem context. Food web structure is commonly determined by stomach contents or by bulk tissue stable isotope analyses, both of which are limited in terms of resolution and versatility. The investigators will refine a tool, Amino Acid Compound-Specific Isotopic Analyses (AA-CSIA), which can be broadly applicable for quantifying the time-integrated trophic position (TP) of consumers. Differences in source and trophic nitrogen isotopic composition for specific amino acids will provide an unambiguous and integrated measure of fractional trophic TP across multiple phyla, regardless of an animal's physiological condition or of the biogeochemical cycling at the base of the food web. AA-CSIA will allow testing of the efficacy of trophic position estimates derived from ecosystem-based models and promote the evolution of these models into decision-support tools.
This project has three goals: 1. To validate the application of AA-CSIA across multiple marine phyla under differing physiological conditions. 2. To compare the application of AA-CSIA across systems with contrasting biogeochemical cycling regimes. 3. To develop the use of AA-CSIA TP estimates for validating trophic models of exploited ecosystems. The investigators will test and refine the approach using a combination of laboratory feeding experiments and field studies across regions with differing biogeochemical cycling regimes. They will determine the applicability of the AA-CSIA approach in a variety of marine organisms assessed in controlled studies. Subsequently, ecosystem components will be sampled from the eastern tropical Pacific, coastal California and the subtropical Pacific gyre. They will also test the effects of sample preservation on the isotopic composition of individual AA to determine whether the approach can be used on archived samples. This tool will allow testing of the efficacy of ecosystem-based models currently used to gain insight into the ecological effects of fisheries removals and improve the reliability of future models required to manage marine resources. In addition to the goal of developing AA-CSIA for use as a TP indicator, the information obtained through this project will provide important species-specific biological data on the feeding behavior of marine organisms that could have implications for their resilience to anthropogenic pressures and climate change.
attribute NC_GLOBAL projects_0_end_date String 2014-07
attribute NC_GLOBAL projects_0_geolocation String Subtropical North Pacific Ocean
attribute NC_GLOBAL projects_0_name String CAMEO 2009 - A novel tool for validating trophic position estimates in ecosystem-based fisheries models
attribute NC_GLOBAL projects_0_project_nid String 491309
attribute NC_GLOBAL projects_0_project_website String http://cameo.noaa.gov/pres_bpopp.html (external link)
attribute NC_GLOBAL projects_0_start_date String 2010-08
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 Southernmost_Northing double -4.18
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL summary String Bulk raw isotopic data from tissue samples from three species of tunas collected in the eastern tropical Pacific Ocean onboard commercial tuna purse-seine vessels.
attribute NC_GLOBAL title String Bulk raw isotopic data from tissue samples from three species of tunas collected in the eastern tropical Pacific Ocean onboard commercial tuna purse-seine vessels from 2003-2005
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL Westernmost_Easting double -139.82
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.3
variable species   String  
attribute species bcodmo_name String species
attribute species description String name of the species
attribute species long_name String Species
attribute species units String unitless
variable sample_number   String  
attribute sample_number bcodmo_name String sample
attribute sample_number description String alphanumeric sample identification number; 2 letter codes representing genus/species names (see species column) followed by sequential numbers 1-15.
attribute sample_number long_name String Sample Number
attribute sample_number nerc_identifier String https://vocab.nerc.ac.uk/collection/P02/current/ACYC/ (external link)
attribute sample_number units String unitless
variable set_number   short  
attribute set_number _FillValue short 32767
attribute set_number actual_range short 10, 178
attribute set_number bcodmo_name String unknown
attribute set_number colorBarMaximum double 100.0
attribute set_number colorBarMinimum double 0.0
attribute set_number description String arbitrary set number (purse-seine sets that caught tunas). Note: IATTC confidentiality rules prohibit divulging the fishing activities of individual vessels.
attribute set_number long_name String Set Number
attribute set_number units String unitless
variable latitude   double  
attribute latitude _CoordinateAxisType String Lat
attribute latitude _FillValue double NaN
attribute latitude actual_range double -4.18, 8.9
attribute latitude axis String Y
attribute latitude bcodmo_name String latitude
attribute latitude colorBarMaximum double 90.0
attribute latitude colorBarMinimum double -90.0
attribute latitude description String latitude of catch location; decimal degrees with S latitude as negative numbers
attribute latitude ioos_category String Location
attribute latitude long_name String Latitude
attribute latitude nerc_identifier String https://vocab.nerc.ac.uk/collection/P09/current/LATX/ (external link)
attribute latitude standard_name String latitude
attribute latitude units String degrees_north
variable longitude   double  
attribute longitude _CoordinateAxisType String Lon
attribute longitude _FillValue double NaN
attribute longitude actual_range double -139.82, -92.57
attribute longitude axis String X
attribute longitude bcodmo_name String longitude
attribute longitude colorBarMaximum double 180.0
attribute longitude colorBarMinimum double -180.0
attribute longitude description String longitude of catch location; decimal degrees with W longitude as negative number
attribute longitude ioos_category String Location
attribute longitude long_name String Longitude
attribute longitude nerc_identifier String https://vocab.nerc.ac.uk/collection/P09/current/LONX/ (external link)
attribute longitude standard_name String longitude
attribute longitude units String degrees_east
variable date   String  
attribute date bcodmo_name String date
attribute date description String date on which tuna were captured and sampled formatted as yyyy-mm-dd
attribute date long_name String Date
attribute date nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/ADATAA01/ (external link)
attribute date source_name String date
attribute date time_precision String 1970-01-01
attribute date units String unitless
variable length   short  
attribute length _FillValue short 32767
attribute length actual_range short 423, 670
attribute length bcodmo_name String length
attribute length description String fork-length of tuna in millimeters
attribute length long_name String Length
attribute length units String millimeters (mm)
variable sex   byte  
attribute sex _FillValue byte 127
attribute sex actual_range byte 1, 3
attribute sex bcodmo_name String sex
attribute sex description String sex of the tuna. 1=male, 2=female, 3=undetermined.
attribute sex long_name String Sex
attribute sex units String numeric (1 to 3)
variable replicate   byte  
attribute replicate _FillValue byte 127
attribute replicate actual_range byte 1, 3
attribute replicate bcodmo_name String replicate
attribute replicate description String replicate number for sets from which replicate samples (up to 3 individuals) were taken
attribute replicate long_name String Replicate
attribute replicate units String unitless
variable d15N   float  
attribute d15N _FillValue float NaN
attribute d15N actual_range float 8.1, 14.6
attribute d15N bcodmo_name String d15N_bio
attribute d15N description String delta 15 N. Isotope values are reported in conventional d-notation relative to the international standard atmospheric N2.
attribute d15N long_name String D15 N
attribute d15N nerc_identifier String https://vocab.nerc.ac.uk/collection/P02/current/IRBO/ (external link)
attribute d15N units String parts per thousand (per mil, ‰)
variable d13C   float  
attribute d13C _FillValue float NaN
attribute d13C actual_range float -16.7, -15.2
attribute d13C bcodmo_name String d13C_bio
attribute d13C description String delta 13 C. Isotope values are reported in conventional d-notation relative to the international standard V-PDB.
attribute d13C long_name String D13 C
attribute d13C nerc_identifier String https://vocab.nerc.ac.uk/collection/P02/current/IRBO/ (external link)
attribute d13C units String parts per thousand (per mil, ‰)
variable Molar_C_to_N   float  
attribute Molar_C_to_N _FillValue float NaN
attribute Molar_C_to_N actual_range float 3.53, 3.89
attribute Molar_C_to_N bcodmo_name String C_to_N
attribute Molar_C_to_N description String molar carbon to nitrogen ratio
attribute Molar_C_to_N long_name String Molar C To N
attribute Molar_C_to_N units String dimensionless (ratio)

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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