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Title Sum-
Institution Dataset ID
     data   graph     files  public Sediment trap flux collected from R/V Atlantic Explorer cruises AE1102, AE1118, AE1206,
AE1219 in the Sargasso Sea, Bermuda Atlantic Time-Series Station from 2011-2012 (Trophic BATS
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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 Samples for particles flux measurements were obtained using free-drifting
cylindrical traps (MultiPITs) deployed at 150, 200, and 300 meters depth.
Sinking fluxes of C, N, and P were calculated from the elemental mass of
material captured in the sediment trap, its collection surface area and
deployment length. Detailed methods for all data collected as part of this
study can be found in the publications arising from this study (references
given below).

Sample QA/QC procedures followed those given in the associated manuscripts.
Sample accuracy was assessed by using certified standards, for those
measurements where standards are available. Certified standards were run with
each analytical run and compared to long term control charts for respective

Detailed information on analyses:
Lomas, M.W., Burke, A., Lomas, D.A., Bell, D.W., Shen, C., Ammerman, J.W.,
Dyhrman, S.T. 2010.\u00a0 Sargasso Sea phosphorus biogeochemistry: An
important role for dissolved organic phosphorus (DOP). Biogeosciences 7:
695-710. doi:
Lomas, M.W., Bates, N.R., Johnson, R.J., Knap, A.H., Steinberg, D.K.,
Carlson, C.A. 2013. Two decades and counting: overview of 24-years of
sustained open ocean biogeochemical measurements. Deep Sea Research II doi:
attribute NC_GLOBAL awards_0_award_nid String 54810
attribute NC_GLOBAL awards_0_award_number String OCE-1030149
attribute NC_GLOBAL awards_0_data_url String http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1030149 (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 Sediment Trap Flux data collected on Trophic BATS cruises
Project: Trophic BATS
Dataset PI: Michael Lomas (Bigelow Laboratory for Ocean Sciences)
Version: 01 May 2013
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 2013-05-01T17:26:04Z
attribute NC_GLOBAL date_modified String 2019-11-06T14:53:10Z
attribute NC_GLOBAL defaultDataQuery String &time<now
attribute NC_GLOBAL doi String 10.1575/1912/bco-dmo.3935.1
attribute NC_GLOBAL Easternmost_Easting double -63.5012
attribute NC_GLOBAL geospatial_lat_max double 33.46986667
attribute NC_GLOBAL geospatial_lat_min double 29.5879
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double -63.5012
attribute NC_GLOBAL geospatial_lon_min double -65.77848
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL geospatial_vertical_max double 300.0
attribute NC_GLOBAL geospatial_vertical_min double 150.0
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/3935 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL instruments_0_acronym String Sed Trap - Part Int
attribute NC_GLOBAL instruments_0_dataset_instrument_nid String 6160
attribute NC_GLOBAL instruments_0_description String A Particle Interceptor Trap is a prototype sediment trap designed in the mid 1990s to segregate 'swimmers' from sinking particulate material sampled from the water column. The prototype trap used 'segregation plates' to deflect and segregate 'swimmers' while a series of funnels collected sinking particles in a chamber (see Dennis A. Hansell and Jan A. Newton. September 1994. Design and Evaluation of a "Swimmer"-Segregating Particle Interceptor Trap, Limnology and Oceanography, Vol. 39, No. 6, pp. 1487-1495).
attribute NC_GLOBAL instruments_0_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/33/ (external link)
attribute NC_GLOBAL instruments_0_instrument_name String Sediment Trap - Particle Interceptor
attribute NC_GLOBAL instruments_0_instrument_nid String 550
attribute NC_GLOBAL instruments_0_supplied_name String Sediment Trap - Particle Interceptor
attribute NC_GLOBAL keywords String bco, bco-dmo, biological, chemical, cruise, cruise_id, data, dataset, date, day, deployment, deployment_no, depth, dmo, erddap, flux, latitude, longitude, management, mass, mass_flux, month, oceanography, office, particulate, particulate_P_flux, poc, POC_flux, pon, PON_flux, preliminary, year
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/3935/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/3935 (external link)
attribute NC_GLOBAL Northernmost_Northing double 33.46986667
attribute NC_GLOBAL param_mapping String {'3935': {'lat': 'flag - latitude', 'depth': 'flag - depth', 'lon': 'flag - longitude'}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/3935/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String Bigelow Laboratory for Ocean Sciences
attribute NC_GLOBAL people_0_person_name String Michael W. Lomas
attribute NC_GLOBAL people_0_person_nid String 50776
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 Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_1_affiliation_acronym String WHOI BCO-DMO
attribute NC_GLOBAL people_1_person_name String Shannon Rauch
attribute NC_GLOBAL people_1_person_nid String 51498
attribute NC_GLOBAL people_1_role String BCO-DMO Data Manager
attribute NC_GLOBAL people_1_role_type String related
attribute NC_GLOBAL project String Trophic BATS
attribute NC_GLOBAL projects_0_acronym String Trophic BATS
attribute NC_GLOBAL projects_0_description String Fluxes of particulate carbon from the surface ocean are greatly influenced by the size, taxonomic composition and trophic interactions of the resident planktonic community. Large and/or heavily-ballasted phytoplankton such as diatoms and coccolithophores are key contributors to carbon export due to their high sinking rates and direct routes of export through large zooplankton. The potential contributions of small, unballasted phytoplankton, through aggregation and/or trophic re-packaging, have been recognized more recently. This recognition comes as direct observations in the field show unexpected trends. In the Sargasso Sea, for example, shallow carbon export has increased in the last decade but the corresponding shift in phytoplankton community composition during this time has not been towards larger cells like diatoms. Instead, the abundance of the picoplanktonic cyanobacterium, Synechococccus, has increased significantly. The trophic pathways that link the increased abundance of Synechococcus to carbon export have not been characterized. These observations helped to frame the overarching research question, "How do plankton size, community composition and trophic interactions modify carbon export from the euphotic zone". Since small phytoplankton are responsible for the majority of primary production in oligotrophic subtropical gyres, the trophic interactions that include them must be characterized in order to achieve a mechanistic understanding of the function of the biological pump in the oligotrophic regions of the ocean.
This requires a complete characterization of the major organisms and their rates of production and consumption. Accordingly, the research objectives are: 1) to characterize (qualitatively and quantitatively) trophic interactions between major plankton groups in the euphotic zone and rates of, and contributors to, carbon export and 2) to develop a constrained food web model, based on these data, that will allow us to better understand current and predict near-future patterns in export production in the Sargasso Sea.
The investigators will use a combination of field-based process studies and food web modeling to quantify rates of carbon exchange between key components of the ecosystem at the Bermuda Atlantic Time-series Study (BATS) site. Measurements will include a novel DNA-based approach to characterizing and quantifying planktonic contributors to carbon export. The well-documented seasonal variability at BATS and the occurrence of mesoscale eddies will be used as a natural laboratory in which to study ecosystems of different structure. This study is unique in that it aims to characterize multiple food web interactions and carbon export simultaneously and over similar time and space scales. A key strength of the proposed research is also the tight connection and feedback between the data collection and modeling components.
Characterizing the complex interactions between the biological community and export production is critical for predicting changes in phytoplankton species dominance, trophic relationships and export production that might occur under scenarios of climate-related changes in ocean circulation and mixing. The results from this research may also contribute to understanding of the biological mechanisms that drive current regional to basin scale variability in carbon export in oligotrophic gyres.
attribute NC_GLOBAL projects_0_end_date String 2014-09
attribute NC_GLOBAL projects_0_geolocation String Sargasso Sea, BATS site
attribute NC_GLOBAL projects_0_name String Plankton Community Composition and Trophic Interactions as Modifiers of Carbon Export in the Sargasso Sea
attribute NC_GLOBAL projects_0_project_nid String 2150
attribute NC_GLOBAL projects_0_start_date String 2010-10
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 29.5879
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL summary String Sediment trap flux collected from R/V Atlantic Explorer cruises AE1102, AE1118, AE1206, AE1219 in the Sargasso Sea, Bermuda Atlantic Time-Series Station from 2011-2012.
attribute NC_GLOBAL title String Sediment trap flux collected from R/V Atlantic Explorer cruises AE1102, AE1118, AE1206, AE1219 in the Sargasso Sea, Bermuda Atlantic Time-Series Station from 2011-2012 (Trophic BATS project)
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL Westernmost_Easting double -65.77848
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.3
variable cruise_id   String  
attribute cruise_id bcodmo_name String cruise_id
attribute cruise_id description String Official cruise identifier e.g. AE1102 = R/V Atlantic Explorer cruise number 1102.
attribute cruise_id long_name String Cruise Id
attribute cruise_id units String text
variable deployment_no   byte  
attribute deployment_no _FillValue byte 127
attribute deployment_no actual_range byte 1, 8
attribute deployment_no bcodmo_name String deploy
attribute deployment_no description String Sequential trap deployment number within cruise.
attribute deployment_no long_name String Deployment No
attribute deployment_no units String integer
variable date   int  
attribute date _FillValue int 2147483647
attribute date actual_range int 20110224, 20120726
attribute date bcodmo_name String date
attribute date description String Date traps deployed in YYYYmmdd format.
attribute date long_name String Date
attribute date nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/ADATAA01/ (external link)
attribute date units String unitless
variable month   String  
attribute month bcodmo_name String month
attribute month description String 2-digit month when traps were deployed.
attribute month long_name String Month
attribute month nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/MNTHXXXX/ (external link)
attribute month units String mm (01 to 12)
variable day   String  
attribute day bcodmo_name String day
attribute day description String 2-digit day of month when traps were deployed.
attribute day long_name String Day
attribute day nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/DAYXXXXX/ (external link)
attribute day units String dd (01 to 31)
variable year   short  
attribute year _FillValue short 32767
attribute year actual_range short 2011, 2012
attribute year bcodmo_name String year
attribute year description String Year when traps were deployed in YYYY format.
attribute year long_name String Year
attribute year nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/YEARXXXX/ (external link)
attribute year units String unitless
variable latitude   double  
attribute latitude _CoordinateAxisType String Lat
attribute latitude _FillValue double NaN
attribute latitude actual_range double 29.5879, 33.46986667
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 trap deployment, positive is North.
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 -65.77848, -63.5012
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 trap deployment, West in negative.
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 depth   double  
attribute depth _CoordinateAxisType String Height
attribute depth _CoordinateZisPositive String down
attribute depth _FillValue double NaN
attribute depth actual_range double 150.0, 300.0
attribute depth axis String Z
attribute depth bcodmo_name String depth_trap
attribute depth colorBarMaximum double 8000.0
attribute depth colorBarMinimum double -8000.0
attribute depth colorBarPalette String TopographyDepth
attribute depth description String Depth of individual sediment trap arrays.
attribute depth ioos_category String Location
attribute depth long_name String Depth
attribute depth positive String down
attribute depth standard_name String depth
attribute depth units String m
variable mass_flux   float  
attribute mass_flux _FillValue float NaN
attribute mass_flux actual_range float 0.0, 345.23
attribute mass_flux bcodmo_name String unknown
attribute mass_flux description String Total mass flux in milligrams per square-meter per day.
attribute mass_flux long_name String Mass Flux
attribute mass_flux units String mg/m^2/d
variable POC_flux   float  
attribute POC_flux _FillValue float NaN
attribute POC_flux actual_range float 1.56, 71.6
attribute POC_flux bcodmo_name String unknown
attribute POC_flux description String Particulate organic carbon flux in milligrams per square-meter per day.
attribute POC_flux long_name String POC Flux
attribute POC_flux units String mg/m^2/d
variable PON_flux   float  
attribute PON_flux _FillValue float NaN
attribute PON_flux actual_range float 0.16, 8.73
attribute PON_flux bcodmo_name String unknown
attribute PON_flux description String Particulate organic nitrogen flux in milligrams per square-meter per day.
attribute PON_flux long_name String PON Flux
attribute PON_flux units String mg/m^2/d
variable particulate_P_flux   float  
attribute particulate_P_flux _FillValue float NaN
attribute particulate_P_flux actual_range float 0.011, 0.94
attribute particulate_P_flux bcodmo_name String unknown
attribute particulate_P_flux description String Particulate phosphorus flux in milligrams per square-meter per day.
attribute particulate_P_flux long_name String Particulate P Flux
attribute particulate_P_flux units String mg/m^2/d

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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