CRED REA Fish Team Belt Transect Survey at Stingray Shoals, 2003

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Frequently anticipated questions:


What does this data set describe?

Title:
CRED REA Fish Team Belt Transect Survey at Stingray Shoals, 2003
Abstract:
Belt transects along 3 consecutively-placed, 25m transect lines were surveyed as part of Rapid Ecological Assessments conducted at 2 sites at Stingray Shoals in the Commonwealth of the Northern Mariana Islands (CNMI) in August, 2003 from the NOAA vessel Oscar Elton Sette (OES03-07). Raw survey data included species level abundance estimates.
Supplemental_Information:
The maximum depth was 20 meters.

Fish observed:

Common Name Scientific Name Species Genus Family Order Class Phylum- Kingdom Division Bony Fishes Osteichthyes Vertebrata Animalia Sharks and Rays Osteichthyes Vertebrata Animalia

  1. How should this data set be cited?

    Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA), 20050922, CRED REA Fish Team Belt Transect Survey at Stingray Shoals, 2003.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: 142.438572
    East_Bounding_Coordinate: 142.438572
    North_Bounding_Coordinate: 20.494095
    South_Bounding_Coordinate: 20.494095

  3. What does it look like?

  4. Does the data set describe conditions during a particular time period?

    Beginning_Date: 29-Aug-2003
    Ending_Date: 29-Aug-2003
    Currentness_Reference: Ground condition

  5. What is the general form of this data set?

    Geospatial_Data_Presentation_Form: spreadsheet

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

    2. What coordinate system is used to represent geographic features?

      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.0001. Longitudes are given to the nearest 0.0001. Latitude and longitude values are specified in Decimal Degrees.

      The horizontal datum used is World Geodetic System 1984 (WGS84).
      The ellipsoid used is Geodetic Reference System 80 (GRS80).
      The semi-major axis of the ellipsoid used is 6378137.
      The flattening of the ellipsoid used is 1/298.2572236.

      Vertical_Coordinate_System_Definition:
      Depth_System_Definition:
      Depth_Datum_Name: Local surface
      Depth_Resolution: 1
      Depth_Distance_Units: meters
      Depth_Encoding_Method: Explicit Depth Coordinate Included with Horizontal Coordinates

  7. How does the data set describe geographic features?


Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

  3. To whom should users address questions about the data?

    Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
    Attn: Ivor Williams
    NOAA IRC
    Honolulu, HI 96818
    USA

    808 725-5360 (voice)
    808 725-5429 (FAX)
    nmfs.pic.credinfo@noaa.gov

    Contact_Instructions: e-mail preferred


Why was the data set created?

Part of a long-term monitoring program at biennial intervals in which corals, algae, fish, and other macroinvertebrates are co-sampled along the same set of transect lines


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: Unknown (process 1 of 1)
    Data were collected by two divers swimming in tandem along the length of a 25m transect line. The team swam each transect two times. During the initial swim-out, each diver recorded the abundance and size of all fish observed over 20cm TL within 4m of their side of the transect line. On the return swim, each diver recorded the abundance and size of all fish less than 20cm TL within 2m of their side of the transect line. Fish were identified to the lowest possible taxon which in most cases was the species level. This data is recorded in the spreadsheet as DataTyp = QUAN. Following the completion of three transect replicates at each site, the divers spent their remaining bottom time roving the general area near the site recording the presence of all fish species observed at the site. This data is recorded in the spreadsheet as DataTyp = PRES. Upon returning to the ship and Honolulu offices, data were error checked, and data from the three fish surveyors were consolidated into one spreadsheet. Data have not been modified, and this data set includes raw data.

  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?

    Observations at each site were made by two divers both of whom are experts in fish taxonomy. Observations were periodically checked during the expedition for consistency between divers, and little discrepancy was ever noted between divers. It should be noted, however, that this data set is quite large, and probably includes typographical or other errors that might be discovered at a future date.

  2. How accurate are the geographic locations?

    GPS unit

  3. How accurate are the heights or depths?

    Dive computer and SCUBA depth gauge

  4. Where are the gaps in the data? What is missing?

    The survey sites were selected to be representative of the coral reef habitats at this reef system. Efforts were made to include broad spatial coverage of the reef area, but weather conditions or other environmental constraints may have precluded the team from surveying windward or exposed sites.

  5. How consistent are the relationships among the observations, including topology?

    The same methods of data collection were used at each of the sites surveyed at this location, and were conducted by the same scientists. Periodic examination of the data through the duration of the trip showed no signs of diver bias or other discrepancies.


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:
Please cite CRED when using the data. Coral Reef Ecosystem Division, Pacific Islands Fisheries Sciences Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration

  1. Who distributes the data set? (Distributor 1 of 1)

    Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
    Attn: CRED Data Management Team
    NOAA IRC
    Honolulu, HI 96818
    USA

    808 725-5360 (voice)
    808 725-5429 (FAX)
    nmfs.pic.credinfo@noaa.gov

    Contact_Instructions: e-mail preferred
  2. What's the catalog number I need to order this data set?

    Offline Data

  3. What legal disclaimers am I supposed to read?

    While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.

  4. How can I download or order the data?

  5. Is there some other way to get the data?

    Contact CRED data management team for information

  6. What hardware or software do I need in order to use the data set?

    Contact CRED data management team for information


Who wrote the metadata?

Dates:
Last modified: 27-May-2014
Metadata author:
Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
NOAA IRC
Honolulu, HI 96818
USA

808 725-5360 (voice)
808 725-5429 (FAX)
nmfs.pic.credinfo@noaa.gov

Contact_Instructions: e-mail preferred
Metadata standard:
FGDC Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)


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