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    • CTD, water quality, plankton species abundance, quantitative phytoplankton profiles and chlorophyll a and b concentrations in sediment samples data collected from R/V Bellows cruise BE-1212 in the northern Gulf of Mexico from 2011-05-21 to 2013-09-16 (NCEI Accession 0175053)

    Metadata Updated: November 1, 2023

    This dataset contains CTD, water quality, plankton species abundance, quantitative phytoplankton profiles, and chlorophyll a and b concentrations in sediment samples data collected from R/V Bellows cruise BE-1212 in the northern Gulf of Mexico from 2011-05-21 to 2013-09-16. CTD data were collected from 26 sites from 2012-05-05 to 2012-05-07. In addition, water samples were collected and analyzed for nutrient concentrations at the Wetlands Research Laboratory at the University of West Florida. Quantitative nanoplankton census data were taken via scanning electron microscopy (SEM) to determine after-the-fact, the effects of the Macondo Oil Spill on skeletal (coccolith)-bearing phytoplankton. Plankton samples were collected from 14 offshore shelf sites from 2012-05-05 to 2012-05-07 and abundances were recorded as counts and as percentages of the total sample. Quantitative phytoplankton profiles were taken specifically at station P7, and these data includes the depth, the volume filtered, the number of cells of each taxon counted, the calculated abundance of each taxon in cells per liter, and micrographs taken during the analysis. For this, one-liter samples were collected from the surface and at different depths using Niskin bottles. Samples were filtered onto a 0.45 micrometer nitrocellulose filter and air-dried. A portion of each filter was mounted on an aluminum stub, sputter-coated, and examined with a JEOL JSM-6480 LV scanning electron microscope. Diatoms, coccolithophores, and armored dinoflagellates were identified to the lowest possible taxonomic category. The number of cells of each taxon in a field of view at a magnification of 1000x was recorded, with up to 700 fields-of-view examined, depending on the density of phytoplankton in the sample. Similarly, sediment samples were collected using replicate Shipek sediment grabs from 28 samples sites between 2011-05-21 and 2013-09-16. Sediment was frozen in the field for transfer to the laboratory. Once in the laboratory, samples were acetone extracted and fluorescence was determined on a Perkin Elmer scanning fluorometer. Standard chlorophyll preparations were used for sample quantification.

    Access & Use Information

    License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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    Dates

    Metadata Date 2023-08-07T17:33:17Z
    Metadata Created Date June 25, 2021
    Metadata Updated Date November 1, 2023
    Reference Date(s) August 3, 2018 (publication), December 7, 2018 (revision)
    Frequency Of Update asNeeded

    Metadata Source

    Harvested from NOAA/NESDIS/ncei/accessions

    Other Data Resources

    Graphic Preview

    Preview graphic

    Additional Metadata

    Resource Type Dataset
    Metadata Date 2023-08-07T17:33:17Z
    Metadata Created Date June 25, 2021
    Metadata Updated Date November 1, 2023
    Reference Date(s) August 3, 2018 (publication), December 7, 2018 (revision)
    Responsible Party (Point of Contact)
    Contact Email
    Guid gov.noaa.nodc:0175053
    Access Constraints Cite as: Snyder, Richard A.; Nienow, James (2018). CTD, water quality, plankton species abundance, quantitative phytoplankton profiles and chlorophyll a and b concentrations in sediment samples data collected from R/V Bellows cruise BE-1212 in the northern Gulf of Mexico from 2011-05-21 to 2013-09-16 (NCEI Accession 0175053). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0175053. Accessed [date]., Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
    Bbox East Long -85.775
    Bbox North Lat 30.33333
    Bbox South Lat 29.293
    Bbox West Long -87.25
    Coupled Resource
    Frequency Of Update asNeeded
    Graphic Preview Description Preview graphic
    Graphic Preview File https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0175053
    Graphic Preview Type PNG
    Harvest Object Id 4094c80d-2623-4d52-9913-66ef03529204
    Harvest Source Id c084a438-6f6b-470d-93e0-16aeddb9f513
    Harvest Source Title NOAA/NESDIS/ncei/accessions
    Licence accessLevel: Public
    Lineage
    Metadata Language eng
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-87.25, 29.293], [-85.775, 29.293], [-85.775, 30.33333], [-87.25, 30.33333], [-87.25, 29.293]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2011-05-21
    Temporal Extent End 2013-09-16

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