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Title Sum-
Institution Dataset ID
   set  data   graph     files  public Carbon, nitrogen and their isotope composition of eelgrass from Virginia Coastal Lagoons and
turtlegrass from St George Sound FL
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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 Seagrass samples were collected randomly from each site by hand using 6\"
diameter PVC cores pounded into the sediment. Intact plants, including roots
and rhizomes, were separated from the sediment and organic debris. The green
shoots were separated from roots & rhizomes, rinsed in fresh water and dried
separately at -60\u00b0 C. Dried samples were ground in a mortar and pestle
using liquid nitrogen and re-dried. The dry powder was analyzed for percent
Carbon, percent Nitrogen, delta-13C, and delta-15N by the Stable Isotope
Facility, U.C. Davis.

Samples were collected by hand, using hand tools.\u00a0 Chemical and isotope
analyses were performed by the Stable Isotope Facility, UC Davis using a PDZ
Europa ANCA-GSL elemental analyzer interfaced to a PDZ Europa 20-20 isotope
ratio mass spectrometer (Sercon Ltd., Cheshire, UK).

Data were segregated by location, tissue type,\u00a0and species.\u00a0 Means
and errors were calculated from 10 to 90 replicate samples (separate plants).
attribute NC_GLOBAL awards_0_award_nid String 648650
attribute NC_GLOBAL awards_0_award_number String OCE-1635403
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 710233
attribute NC_GLOBAL awards_1_award_number String OCE-1633951
attribute NC_GLOBAL awards_1_data_url String http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1633951 (external link)
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 Michael E. Sieracki
attribute NC_GLOBAL awards_1_program_manager_nid String 50446
attribute NC_GLOBAL cdm_data_type String Other
attribute NC_GLOBAL comment String Seagrass C, N & isotope composition
Eelgrass from Virginia Coastal Lagoons and turtlegrass from St George Sound FL
PI: R. Zimmerman (ODU)
version: 2018-10-10
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 2018-09-17T18:55:46Z
attribute NC_GLOBAL date_modified String 2019-03-20T14:14:13Z
attribute NC_GLOBAL defaultDataQuery String &time<now
attribute NC_GLOBAL doi String 10.1575/1912/bco-dmo.746307.1
attribute NC_GLOBAL Easternmost_Easting double -75.732307
attribute NC_GLOBAL geospatial_lat_max double 37.343211
attribute NC_GLOBAL geospatial_lat_min double 29.853211
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double -75.732307
attribute NC_GLOBAL geospatial_lon_min double -84.551509
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL infoUrl String https://www.bco-dmo.org/dataset/746307 (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 Used for chemical and isotope analyses.
attribute NC_GLOBAL instruments_0_dataset_instrument_nid String 746322
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 PDZ Europa 20-20 isotope ratio mass spectrometer (Sercon Ltd., Cheshire, UK)
attribute NC_GLOBAL instruments_1_dataset_instrument_description String Used for chemical and isotope analyses.
attribute NC_GLOBAL instruments_1_dataset_instrument_nid String 746323
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 PDZ Europa ANCA-GSL elemental analyzer
attribute NC_GLOBAL keywords String amount, analysis, Analysis_Number, bco, bco-dmo, biological, C_Amount_ug, C_to_N, chemical, comment, d13, d13C, d13C_Comment, d15, d15N, d15N_Comment, data, dataset, dmo, dry, Dry_Mass_mg, erddap, lab, latitude, Location, longitude, management, mass, material, N_Amount_ug, name, number, oceanography, office, our, OurLabID, pcnt, pcnt_C_g_per_gDW, pcnt_N_g_per_gDW, per, preliminary, sample, Sample_ID, tray, Tray_Name, type, Type_of_Material, well, Well_Id
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/746307/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/746307 (external link)
attribute NC_GLOBAL Northernmost_Northing double 37.343211
attribute NC_GLOBAL param_mapping String {'746307': {'lat': 'master - latitude', 'lon': 'master - longitude'}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/746307/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String Old Dominion University
attribute NC_GLOBAL people_0_affiliation_acronym String ODU
attribute NC_GLOBAL people_0_person_name String Richard C. Zimmerman
attribute NC_GLOBAL people_0_person_nid String 51308
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 Old Dominion University
attribute NC_GLOBAL people_1_affiliation_acronym String ODU
attribute NC_GLOBAL people_1_person_name String David J Burdige
attribute NC_GLOBAL people_1_person_nid String 648653
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 Nancy Copley
attribute NC_GLOBAL people_2_person_nid String 50396
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 Seagrass Blue Carbon
attribute NC_GLOBAL projects_0_acronym String Seagrass Blue Carbon
attribute NC_GLOBAL projects_0_description String NSF abstract:
This research will develop a quantitative understanding of the factors controlling carbon cycling in seagrass meadows that will improve our ability to quantify their potential as blue carbon sinks and predict their future response to climate change, including sea level rise, ocean warming and ocean acidification. This project will advance a new generation of bio-optical-geochemical models and tools (ECHOES) that have the potential to be transform our ability to measure and predict carbon dynamics in shallow water systems.
This study will utilize cutting-edge methods for evaluating oxygen and carbon exchange (Eulerian and eddy covariance techniques) combined with biomass, sedimentary, and water column measurements to develop and test numerical models that can be scaled up to quantify the dynamics of carbon cycling and sequestration in seagrass meadows in temperate and tropical environments of the West Atlantic continental margin that encompass both siliciclastic and carbonate sediments. The comparative analysis across latitudinal and geochemical gradients will address the relative contributions of different species and geochemical processes to better constrain the role of seagrass carbon sequestration to global biogeochemical cycles. Specifically the research will quantify: (i) the relationship between C stocks and standing biomass for different species with different life histories and structural complexity, (ii) the influence of above- and below-ground metabolism on carbon exchange, and (iii) the influence of sediment type (siliciclastic vs. carbonate) on Blue Carbon storage. Seagrass biomass, growth rates, carbon content and isotope composition (above- and below-ground), organic carbon deposition and export will be measured. Sedimentation rates and isotopic composition of PIC, POC, and iron sulfide precipitates, as well as porewater concentrations of dissolved sulfide, CO2, alkalinity and salinity will be determined in order to develop a bio-optical-geochemical model that will predict the impact of seagrass metabolism on sediment geochemical processes that control carbon cycling in shallow waters. Model predictions will be validated against direct measurements of DIC and O2 exchange in seagrass meadows, enabling us to scale-up the density-dependent processes to predict the impacts of seagrass distribution and density on carbon cycling and sequestration across the submarine landscape.
Status, as of 09 June 2016: This project has been recommended for funding by NSF's Division of Ocean Sciences.
attribute NC_GLOBAL projects_0_end_date String 2019-07
attribute NC_GLOBAL projects_0_geolocation String Chesapeake Bay, Northern Gulf of Mexico, and Bahamas Banks
attribute NC_GLOBAL projects_0_name String Toward an Improved Understanding of Blue Carbon: The Role of Seagrasses in Sequestering CO2
attribute NC_GLOBAL projects_0_project_nid String 648649
attribute NC_GLOBAL projects_0_start_date String 2016-08
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 29.853211
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL subsetVariables String Analysis
attribute NC_GLOBAL summary String This dataset includes results of carbon and nitrogen analyses on seagrasses collected in the Virginia Coastal Lagoons and from St. George Sound FL in May, 2017.
attribute NC_GLOBAL title String Carbon, nitrogen and their isotope composition of eelgrass from Virginia Coastal Lagoons and turtlegrass from St George Sound FL
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL Westernmost_Easting double -84.551509
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.3
variable Location   String  
attribute Location bcodmo_name String site
attribute Location description String Location of sample collection
attribute Location long_name String Location
attribute Location units String unitless
variable latitude   double  
attribute latitude _CoordinateAxisType String Lat
attribute latitude _FillValue double NaN
attribute latitude actual_range double 29.853211, 37.343211
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; north is positive
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 -84.551509, -75.732307
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; east is postive
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 Type_of_Material   String  
attribute Type_of_Material bcodmo_name String sample_type
attribute Type_of_Material description String type of plant material; leaf or root/rhyzome
attribute Type_of_Material long_name String Type Of Material
attribute Type_of_Material units String unitless
variable Sample_ID   String  
attribute Sample_ID bcodmo_name String sample
attribute Sample_ID description String sample identifier
attribute Sample_ID long_name String Sample ID
attribute Sample_ID nerc_identifier String https://vocab.nerc.ac.uk/collection/P02/current/ACYC/ (external link)
attribute Sample_ID units String unitless
variable d13C   float  
attribute d13C _FillValue float NaN
attribute d13C actual_range float -12.63, 91.0
attribute d13C bcodmo_name String d13C
attribute d13C description String the ratio of stable isotopes 13C:12C
attribute d13C long_name String D13 C
attribute d13C units String unitless
variable C_Amount_ug   float  
attribute C_Amount_ug _FillValue float NaN
attribute C_Amount_ug actual_range float 494.68, 3048.4
attribute C_Amount_ug bcodmo_name String C
attribute C_Amount_ug description String mass of Carbon in the sample
attribute C_Amount_ug long_name String C Amount Ug
attribute C_Amount_ug units String micrograms
variable d13C_Comment   String  
attribute d13C_Comment bcodmo_name String comment
attribute d13C_Comment description String comments pertaining to delta 13C analysis
attribute d13C_Comment long_name String D13 C Comment
attribute d13C_Comment units String unitless
variable d15N   float  
attribute d15N _FillValue float NaN
attribute d15N actual_range float -0.35, 91.0
attribute d15N bcodmo_name String d15N
attribute d15N description String the ratio of stable isotopes 15N:14N
attribute d15N long_name String D15 N
attribute d15N units String unitless
variable N_Amount_ug   float  
attribute N_Amount_ug _FillValue float NaN
attribute N_Amount_ug actual_range float 22.56, 206.62
attribute N_Amount_ug bcodmo_name String N
attribute N_Amount_ug description String mass of Nitrogen in the sample
attribute N_Amount_ug long_name String N Amount Ug
attribute N_Amount_ug units String micrograms
variable Dry_Mass_mg   float  
attribute Dry_Mass_mg _FillValue float NaN
attribute Dry_Mass_mg actual_range float 2.431, 6.062
attribute Dry_Mass_mg bcodmo_name String mass_dry
attribute Dry_Mass_mg description String dry mass of sample
attribute Dry_Mass_mg long_name String Dry Mass Mg
attribute Dry_Mass_mg units String milligrams
variable pcnt_C_g_per_gDW   float  
attribute pcnt_C_g_per_gDW _FillValue float NaN
attribute pcnt_C_g_per_gDW actual_range float 0.29, 91.0
attribute pcnt_C_g_per_gDW bcodmo_name String C
attribute pcnt_C_g_per_gDW description String percent Carbon in sample dry weight
attribute pcnt_C_g_per_gDW long_name String Pcnt C G Per G DW
attribute pcnt_C_g_per_gDW units String unitless (grams/grams)
variable pcnt_N_g_per_gDW   float  
attribute pcnt_N_g_per_gDW _FillValue float NaN
attribute pcnt_N_g_per_gDW actual_range float 0.03, 91.0
attribute pcnt_N_g_per_gDW bcodmo_name String N
attribute pcnt_N_g_per_gDW description String percent Nitrogen in sample dry weight
attribute pcnt_N_g_per_gDW long_name String Pcnt N G Per G DW
attribute pcnt_N_g_per_gDW units String unitless (grams/grams)
variable C_to_N   float  
attribute C_to_N _FillValue float NaN
attribute C_to_N actual_range float 0.18, 91.0
attribute C_to_N bcodmo_name String C_to_N
attribute C_to_N description String Carbon to Nitrogen ratio
attribute C_to_N long_name String C To N
attribute C_to_N units String unitless (mol/mol)
variable d15N_Comment   String  
attribute d15N_Comment bcodmo_name String comment
attribute d15N_Comment description String comments pertaining to delta 15N analysis
attribute d15N_Comment long_name String D15 N Comment
attribute d15N_Comment units String unitless
variable Tray_Name   String  
attribute Tray_Name bcodmo_name String sample
attribute Tray_Name description String sample tray identifier
attribute Tray_Name long_name String Tray Name
attribute Tray_Name nerc_identifier String https://vocab.nerc.ac.uk/collection/P02/current/ACYC/ (external link)
attribute Tray_Name units String unitless
variable Well_Id   String  
attribute Well_Id bcodmo_name String sample
attribute Well_Id description String well identifier
attribute Well_Id long_name String Well Id
attribute Well_Id nerc_identifier String https://vocab.nerc.ac.uk/collection/P02/current/ACYC/ (external link)
attribute Well_Id units String unitless
variable Analysis   String  
attribute Analysis bcodmo_name String unknown
attribute Analysis description String type of analyses performed on sample
attribute Analysis long_name String Analysis
attribute Analysis units String unitless
variable OurLabID   int  
attribute OurLabID _FillValue int 2147483647
attribute OurLabID actual_range int 1390604, 1390993
attribute OurLabID bcodmo_name String sample
attribute OurLabID description String intermal sample identifier assigned by researcher's laborator
attribute OurLabID long_name String Our Lab ID
attribute OurLabID nerc_identifier String https://vocab.nerc.ac.uk/collection/P02/current/ACYC/ (external link)
attribute OurLabID units String unitless
variable Analysis_Number   int  
attribute Analysis_Number _FillValue int 2147483647
attribute Analysis_Number actual_range int 446071, 447512
attribute Analysis_Number bcodmo_name String sample
attribute Analysis_Number colorBarMaximum double 100.0
attribute Analysis_Number colorBarMinimum double 0.0
attribute Analysis_Number description String sample identifier assigned by Stable Isotope Facility
attribute Analysis_Number long_name String Analysis Number
attribute Analysis_Number nerc_identifier String https://vocab.nerc.ac.uk/collection/P02/current/ACYC/ (external link)
attribute Analysis_Number units String unitless

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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