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Title Sum-
Institution Dataset ID
     data   graph     files  public Cruise track (1-min fixes; from R2R) from R/V F.G. Walton Smith cruise WS1005 from Miami to
the Bahamas in 2010
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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,.odvTxt
attribute NC_GLOBAL acquisition_description String Original navigation and other data are available from the NSF R2R data
attribute NC_GLOBAL awards_0_award_nid String 54952
attribute NC_GLOBAL awards_0_award_number String OCE-0926421
attribute NC_GLOBAL awards_0_data_url String http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=0926421 (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 WS1005 Cruise Track (1-min resolution)
from Rolling Deck to Repository (R2R)
R/V F.G. Walton Smith
Chief Sci: Joan Bernhard (WHOI)
Version: 09 July 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 2013-07-09T20:03:09Z
attribute NC_GLOBAL date_modified String 2019-11-12T20:32:53Z
attribute NC_GLOBAL defaultDataQuery String &time<now
attribute NC_GLOBAL doi String 10.1575/1912/bco-dmo.3993.1
attribute NC_GLOBAL Easternmost_Easting double -76.8221655
attribute NC_GLOBAL geospatial_lat_max double 25.83778167
attribute NC_GLOBAL geospatial_lat_min double 24.6997025
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double -76.8221655
attribute NC_GLOBAL geospatial_lon_min double -80.19414733
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL infoUrl String https://www.bco-dmo.org/dataset/3993 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL keywords String bco, bco-dmo, biological, chemical, cog, course, data, dataset, date, date_utc, dmo, erddap, ground, iso, latitude, longitude, management, oceanography, office, over, preliminary, sog, speed, time, time_utc
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/3993/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/3993 (external link)
attribute NC_GLOBAL Northernmost_Northing double 25.83778167
attribute NC_GLOBAL param_mapping String {'3993': {'lat': 'master - latitude', 'lon': 'master - longitude', 'ISO_DateTime_UTC': 'master - time'}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/3993/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_0_affiliation_acronym String WHOI
attribute NC_GLOBAL people_0_person_name String Joan M. Bernhard
attribute NC_GLOBAL people_0_person_nid String 51285
attribute NC_GLOBAL people_0_role String Chief Scientist
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 Protists_Stromatolites
attribute NC_GLOBAL projects_0_acronym String Protists_Stromatolites
attribute NC_GLOBAL projects_0_description String Collaborative Research: Were Protists the Beginning of the End for Stromatolites?
This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).
Microbial mats are conspicuous components of many benthic marine and aquatic settings. A subset of these microbial mats binds sediments to form potentially fossilizable structures, often called stromatolites or microbialites. While much is known about microbialite autotrophs, little is known about their heterotrophic eukaryotes. The lack of understanding is surprising given that stromatolites have an extensive geologic record spanning most of Earth's history. Stromatolites are layered sedimentary structures formed by a combination of microbial activities, abiotic carbonate precipitation, and sedimentary processes. Details of stromatolite formation and preservation are poorly understood, and a drastic decline in stromatolite occurrence and diversity in the late Precambrian has long been a conundrum. A popular hypothesis to explain this decline at ~1 billion years ago is that eukaryotic organisms evolved to become predators on stromatolites. To date, the most commonly proposed predatory culprit is an unidentified metazoan, although evidence of such an organism is lacking from the fossil record. Protists, most of which are not expected to leave an obvious fossil record, are additional possible stromatolitic predators, but they have been largely ignored in this context. The hypotheses of this project are: (1) Heterotrophic protist activity caused the textural change from stromatolites (layered sediment fabric) to thrombolites (clotted sediment fabric) and (2) Heterotrophic protists caused the decimation of Neoproterozoic stromatolites. Since it is impossible to recreate the Neoproterozoic, studies of modern analogs serve to indirectly test these hypotheses. The overall goal of this project is to describe the eukaryotic communities associated with modern stromatolites and thrombolites from the Bahamas and Australia, compare the communities from the two sites, and to relate the communities to stromatolitic / thrombolitic sediment fabric and biomarker signatures.
The overall goal will be achieved by addressing the following specific aims: (1) Identify, via morphologic and molecular approaches, the eukaryotic community of modern stromatolites and thrombolites; (2) Analyze modern and fossil stromatolites and thrombolites for their eukaryotic lipid biomarkers using solvent extraction, chromatographic and mass spectrometric methods; (3) Using the Fluorescently Labeled Embedded Core (FLEC) method, document the sub-millimeter distributions of the heterotrophic eukaryotic community inhabiting modern stromatolites and thrombolites in conjunction with fine-scale sediment fabric; (4) Using solvent extraction, chromatographic and mass spectrometric methods, analyze cultures of allogromiid foraminifers to survey for lipid biomarkers unique to them; (5) After incubation of modern stromatolites with heterotrophic protists, use FLEC methodology to determine how their activity affects sediment fabric and conduct preliminary comparisons of these modern fabrics to those of stromatolite fossils.
Intellectual Merit: The oldest fossil stromatolites are >3.4 billion years old and are the most visible manifestations of pervasive microbial life on the early Earth. The changes in stromatolite abundance and morphology document complex interplays between biological and geological processes. This project addresses multiple aspects of stromatolite genesis and pre-fossilization alteration but at its core, focuses on one of the greatest geological enigmas: the possible connection between stromatolite decline and the rise of complex life.
attribute NC_GLOBAL projects_0_end_date String 2013-08
attribute NC_GLOBAL projects_0_geolocation String Highborne Cay, Bahamas and Carbla Station (Shark Bay), Western Australia
attribute NC_GLOBAL projects_0_name String Were Protists the Beginning of the End for Stromatolites?
attribute NC_GLOBAL projects_0_project_nid String 2203
attribute NC_GLOBAL projects_0_start_date String 2009-09
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 24.6997025
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL summary String 1-minute resolution navigation from the WS1005 cruise aboard the R/V F.G. Walton Smith from 18 March to 24 March 2010.
attribute NC_GLOBAL time_coverage_end String 2010-03-24T20:23:00.388Z
attribute NC_GLOBAL time_coverage_start String 2010-03-18T00:00:00.405Z
attribute NC_GLOBAL title String Cruise track (1-min fixes; from R2R) from R/V F.G. Walton Smith cruise WS1005 from Miami to the Bahamas in 2010
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL Westernmost_Easting double -80.19414733
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.3
variable date_utc   int  
attribute date_utc _FillValue int 2147483647
attribute date_utc actual_range int 20100318, 20100324
attribute date_utc bcodmo_name String date_utc
attribute date_utc description String Year, month, and day (UTC) in YYYYmmdd format.
attribute date_utc long_name String Date Utc
attribute date_utc units String unitless
variable time_utc   String  
attribute time_utc bcodmo_name String time_utc
attribute time_utc description String Time (UTC) in hours, minutes, and decimal minutes; 24-hour clock.
attribute time_utc long_name String Time Utc
attribute time_utc units String HHMM.mmmmm
variable latitude   double  
attribute latitude _CoordinateAxisType String Lat
attribute latitude _FillValue double NaN
attribute latitude actual_range double 24.6997025, 25.83778167
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 (-90 to 90 decimal degrees).
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 -80.19414733, -76.8221655
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 (-180 to 180 decimal degrees).
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 sog   float  
attribute sog _FillValue float NaN
attribute sog actual_range float 0.0, 6.05
attribute sog bcodmo_name String sog
attribute sog description String Instantaneous speed-over-ground (in meters per second); computed from single-differences
of successive positions (from the current position to the next position).
attribute sog long_name String Speed Over Ground
attribute sog units String m/s
variable cog   float  
attribute cog _FillValue float NaN
attribute cog actual_range float 0.0, 359.566
attribute cog bcodmo_name String cog
attribute cog description String Instantaneous course-over-ground measured in degrees clockwise from north.
attribute cog long_name String Course Over Ground
attribute cog units String degrees clockwise from North
variable time   double  
attribute time _CoordinateAxisType String Time
attribute time actual_range double 1.268870400405E9, 1.269462180388E9
attribute time axis String T
attribute time bcodmo_name String ISO_DateTime_UTC
attribute time description String Date/Time (UTC) formatted to ISO8601 standard. T indicates start of time string; Z indicates UTC.
attribute time ioos_category String Time
attribute time long_name String ISO Date Time UTC
attribute time nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/DTUT8601/ (external link)
attribute time source_name String ISO_DateTime_UTC
attribute time standard_name String time
attribute time time_origin String 01-JAN-1970 00:00:00
attribute time time_precision String 1970-01-01T00:00:00.000Z
attribute time units String seconds since 1970-01-01T00:00:00Z

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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