Sr/Ca and linear extension data for five modern Orbicella faveolata colonies from Dry Tortugas National Park, Florida, USA

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Frequently anticipated questions:

What does this data set describe?

Title:
Sr/Ca and linear extension data for five modern Orbicella faveolata colonies from Dry Tortugas National Park, Florida, USA
Abstract:
This data release includes new, sub-annual Strontium/Calcium (Sr/Ca) and annual linear extension rates covering a period between 1980 and 2012 for five colonies of the massive coral, Orbicella faveolata (O. faveolata). All five coral colonies were collected live by U.S. Geological Survey (USGS) scientists from the Dry Tortugas National Park (DTNP), Florida (FL) in August 2008 and May 2012.
Supplemental_Information:
The coral samples and derived data were collected under the National Park Service Scientific Research and Collecting permits DRTO-2008-SCI-0015 and DRT0-2012-SCI-0001; accession numbers DRTO-241 and DRTO-353. Cores were collected during USGS field activity numbers (FAN) 08CGS01 and 12CBC03; additional survey details are available at https://compass.er.usgs.gov/fan_info.php?fan=08CGS01 and https://compass.er.usgs.gov/fan_info.php?fan=12CBC03.
  1. How might this data set be cited?
    Flannery, Jennifer A., Richey, Julie N., Toth, Lauren T., Kuffner, Ilsa B., and Poore, Richard Z., 20180618, Sr/Ca and linear extension data for five modern Orbicella faveolata colonies from Dry Tortugas National Park, Florida, USA: U.S. Geological Survey Data Release doi:10.5066/P90M2W6D, U.S. Geological Survey, St. Petersburg, FL.

    Online Links:

    This is part of the following larger work.

    Flannery, Jennifer A., Richey, Julie N., Toth, Lauren T., Kuffner, Ilsa B., and Poore, Richard Z., 2018, Quantifying uncertainty in Sr/Ca-based estimates of SST from the coral Orbicella faveolata: AGU Publications, Paleoceanography and Paleoclimatology.

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -82.5
    East_Bounding_Coordinate: -81.5
    North_Bounding_Coordinate: 25.0
    South_Bounding_Coordinate: 24.0
    Description_of_Geographic_Extent: Dry Tortugas National Park, Florida
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 1980
    Ending_Date: 2012
    Currentness_Reference:
    ground condition
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: Tabular digital data
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      Indirect_Spatial_Reference: None
      This is a Vector data set.
    2. What coordinate system is used to represent geographic features?
  7. How does the data set describe geographic features?
    DryTortugas_Sr_Ca_LER_1980_2012.csv, DryTortugas_Sr_Ca_LER_1980_2012.xlsx
    These files contain attribute information for the sub-annual Sr/Ca and annual linear extension rate (LER) data collected from five modern Orbicella faveolata colonies (B3, B4, C2, NK1, and NK2) spanning 1980–2012. When viewing DryTortugas_Sr_Ca_LER_1980_2012.csv, please note that empty fields (when no data are available) are not represented by any characters in this Comma Separated Value (CSV) file, thus one only sees the separator commas “,”. To view the data in a tab-delimited format arranged by column, please use the Excel spreadsheet. (Source: USGS)
    Date B3 Sub-Annual
    Date for the sub-annual Sr/Ca data acquired from Pulaski Shoal for coral core B3 (Orbicella faveolata). (Source: USGS)
    Range of values
    Minimum:1980.054
    Maximum:2008.917
    Units:Decimal Year
    B3 Sub-Annual Sr/Ca (mmol/mol)
    Sub-Annual Sr/Ca (mmol/mol) values for coral core B3 (Orbicella faveolata). (Source: USGS)
    Range of values
    Minimum:8.930
    Maximum:9.413
    Units:mmol/mol
    Date B4 Sub-Annual
    Date for the sub-annual Sr/Ca data acquired from Pulaski Shoal for coral core B4 (Orbicella faveolata). (Source: USGS)
    Range of values
    Minimum:1982.625
    Maximum:2008.458
    Units:Decimal Year
    B4 Sub-Annual Sr/Ca (mmol/mol)
    Sub-Annual Sr/Ca (mmol/mol) values for coral core B4 (Orbicella faveolata). (Source: USGS)
    Range of values
    Minimum:8.950
    Maximum:9.472
    Units:mmol/mol
    Date C2 Sub-Annual
    Date for the sub-annual Sr/Ca data acquired from Pulaski Shoal for coral core C2 (Orbicella faveolata). (Source: USGS)
    Range of values
    Minimum:1980.000
    Maximum:2008.542
    Units:Decimal Year
    C2 Sub-Annual Sr/Ca (mmol/mol)
    Sub-Annual Sr/Ca (mmol/mol) values for coral core C2 (Orbicella faveolata). (Source: USGS)
    Range of values
    Minimum:8.894
    Maximum:9.409
    Units:mmol/mol
    Date NK1 Sub-Annual
    Date for the sub-annual Sr/Ca data acquired from North Key for coral core NK1 (Orbicella faveolata). (Source: USGS)
    Range of values
    Minimum:1997.646
    Maximum:2012.208
    Units:Decimal Year
    NK1 Sub-Annual Sr/Ca (mmol/mol)
    Sub-Annual Sr/Ca (mmol/mol) values for coral core NK1 (Orbicella faveolata). (Source: USGS)
    Range of values
    Minimum:8.891
    Maximum:9.476
    Units:mmol/mol
    Date NK2 Sub-Annual
    Date for the sub-annual Sr/Ca data acquired from North Key for coral core NK2 (Orbicella faveolata). Cells with no data are represented as -999. (Source: USGS)
    Range of values
    Minimum:1989.375
    Maximum:2012.208
    Units:Decimal Year
    NK2 Sub-Annual Sr/Ca (mmol/mol)
    Sub-Annual Sr/Ca (mmol/mol) values for coral core NK2 (Orbicella faveolata). (Source: USGS)
    Range of values
    Minimum:8.900
    Maximum:9.447
    Units:mmol/mol
    Date
    Date, in YYYY format, for each study site's corresponding linear extension rate values. (Source: USGS)
    Range of values
    Minimum:1980
    Maximum:2011
    Units:Year
    B3 Linear Extension (cm/yr)
    Annual linear extension rates for coral core B3 (Orbicella faveolata). (Source: USGS)
    Range of values
    Minimum:0.55
    Maximum:1.25
    Units:cm/yr
    B4 Linear Extension (cm/yr)
    Annual linear extension rates for coral core B4 (Orbicella faveolata). (Source: USGS)
    Range of values
    Minimum:0.35
    Maximum:0.80
    Units:cm/yr
    C2 Linear Extension (cm/yr)
    Annual linear extension rates for coral core C2 (Orbicella faveolata). (Source: USGS)
    Range of values
    Minimum:0.50
    Maximum:1.00
    Units:cm/yr
    NK1 Linear Extension (cm/yr)
    Annual linear extension rates for coral core NK1 (Orbicella faveolata). (Source: USGS)
    Range of values
    Minimum:0.80
    Maximum:1.30
    Units:cm/yr
    NK2 Linear Extension (cm/yr)
    Annual linear extension rates for coral core NK2 (Orbicella faveolata). (Source: USGS)
    Range of values
    Minimum:0.55
    Maximum:1.05
    Units:cm/yr
    Entity_and_Attribute_Overview:
    The entity and attribute information provided here describes the tabular data associated with the dataset. Please review the detailed descriptions that are provided (the individual attribute descriptions) for information on the values that appear as fields/table entries of the dataset.
    Entity_and_Attribute_Detail_Citation:
    The entity and attribute information was generated by the individual and/or agency identified as the originator of the dataset. Please review the rest of the metadata record for additional details and information.

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Jennifer A. Flannery
    • Julie N. Richey
    • Lauren T. Toth
    • Ilsa B. Kuffner
    • Richard Z. Poore
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
    Jennifer A. Flannery
    U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center
    600 4th St. South
    St. Petersburg, FL
    USA

    727-502-8043 (voice)
    jflannery@usgs.gov

Why was the data set created?

Sr/Ca ratios act as a proxy for sea surface temperature (SST) in the skeletons of aragonite producing organisms, such as massive corals. The Sr/Ca-SST proxy shows promise when applied to single O. faveolata colonies in the Atlantic/Caribbean regions, but it is currently unknown how well the Sr/Ca-SST proxy performs between colonies of this species. It is necessary to understand how well coral colonies from the same location replicate in order to examine and quantify uncertainty introduced from potential sample collection or subsampling errors. In order to examine both intra and intercolony Sr/Ca variability in O. faveolata, five live-top colonies were collected from the Dry Tortugas National Park, FL, USA in 2008 and 2012 and analyzed for Sr/Ca using inductively coupled plasma optical emission spectrometry (ICP-OES). The root-mean-square (RMS) method produced a sub-annual RMS of 0.082 millimoles per mole (mmol/mol) and a mean-annual RMS of 0.070 mmol/mol. Results indicate that a minimum of three coral colonies should be replicated when performing Sr/Ca analysis in order to fully quantify errors induced by coral collection or subsampling.

How was the data set created?

  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
    Date: 2012 (process 1 of 2)
    The USGS collected the coral cores used in this study in the area of Pulaski Shoal at the northern end of DRTO in August 2008 (O. faveolata colonies B3, B4, and C2) and in the North Key region in May 2012 (O. faveolata colonies NK1 and NK2). Subsampling of all coral colonies was done using a tri-axial micromill with a 0.5mm forward increment, and 1.5 mm cut depth, and a 0.5 millimeter (mm) drill bit along a continuous thecal wall. Between 88 and 237 micrograms (μg) of subsampled skeletal powder was weighed out for each sample from each of the coral colonies and acidified using ultrapure 2% nitric acid (HNO3) in order to obtain sample solutions with a target Ca concentration of 20 parts per million (ppm). A PerkinElmer 7300 dual view ICP-OES was used to make the sub-annual Sr/Ca determinations. The resulting Sr/Ca annual cycles were used to compute annual linear extension rates by measuring the distance between each summer peak.
    Date: 13-Oct-2020 (process 2 of 2)
    Added keywords section with USGS persistent identifier as theme keyword. Person who carried out this activity:
    U.S. Geological Survey
    Attn: VeeAnn A. Cross
    Marine Geologist
    384 Woods Hole Road
    Woods Hole, MA

    508-548-8700 x2251 (voice)
    508-457-2310 (FAX)
    vatnipp@usgs.gov
  3. What similar or related data should the user be aware of?

How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?
    No formal attribute accuracy tests were conducted.
  2. How accurate are the geographic locations?
    No formal positional accuracy tests were conducted.
  3. How accurate are the heights or depths?
    No formal positional accuracy tests were conducted.
  4. Where are the gaps in the data? What is missing?
    Dataset is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details.
  5. How consistent are the relationships among the observations, including topology?
    No formal logical accuracy tests were conducted.

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?
Access_Constraints: None
Use_Constraints:
Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. The U.S. Geological Survey requests to be acknowledged as originator of these data in future products or derivative research.
  1. Who distributes the data set? (Distributor 1 of 1)
    Jennifer A. Flannery
    U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center
    600 4th St. South
    St. Petersburg, FL
    USA

    727-502-8043 (voice)
    jflannery@usgs.gov
  2. What's the catalog number I need to order this data set?
  3. What legal disclaimers am I supposed to read?
    This publication was prepared by an agency of the United States Government. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data on any other system, nor shall the act of distribution imply any such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and (or) contained herein. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof.
  4. How can I download or order the data?

Who wrote the metadata?

Dates:
Last modified: 13-Oct-2020
Metadata author:
Jennifer A. Flannery
U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center
Chemist
600 4th St. South
St. Petersburg, FL
USA

727-502-8043 (voice)
jflannery@usgs.gov
Metadata standard:
Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)
This page is <https://cmgds.marine.usgs.gov/catalog/spcmsc/DryTortugas_Sr_Ca_LER_1980_2012.faq.html>
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