Hawaii Institute for Marine Biology and NOAA National Ocean Service, Marine Sanctuary Program Partnership, in affiliation with the Coral Reef Assessment and Monitoring Program, 2007 Survey of the Northwestern Hawaiian Islands Coral Reef Ecosystem Reserve: Benthic Data from Digital Still Images (NODC Accession 0000881)

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Frequently anticipated questions:


What does this data set describe?

Title:
Hawaii Institute for Marine Biology and NOAA National Ocean Service, Marine Sanctuary Program Partnership, in affiliation with the Coral Reef Assessment and Monitoring Program, 2007 Survey of the Northwestern Hawaiian Islands Coral Reef Ecosystem Reserve: Benthic Data from Digital Still Images (NODC Accession 0000881)
Abstract:
Rapid Assessment Transects were conducted in 2007 in the Papahanaumokuakea Marine National Monument of the Northwest Hawaiian Islands Coral Reef Ecosystem Reserve. The surveys were led by Dr. Paul Jokiel and Mr. Erik Franklin along various depth contours at 7 unique atolls or islands. The data are quantitative estimates of substrate type and species provided in spreadsheet format (comma-separated version, CSV, text files). The types and coverages were derived objectively from photographic images using PhotoGrid, a software package which analyzes random points on images of coral reefs and substrate. This dataset does not include the images from the transects, which have been provided to NOAA separately.
Supplemental_Information:
Entry_ID Unknown Sensor_Name digital camera Source_Name SCUBA Project_Campaign: Partnership between the Hawaii Institute for Marine Biology and the National Oceanic and Atmospheric Administration, and the Coral Reef Assessment and Monitoring Program (CRAMP) Originating_Center Hawaii Institute of Marine Biology Storage_Medium CSV ASCII, MS Word Reference None Online_size: 15425 kilobytes

Resource Description: NODC Accession Number 0000881

  1. How should this data set be cited?

    Dr. Jo-Ann Leong Dr. Paul Jokiel Dr. Ku'ulei Rodgers Mr. Erik Franklin Hawaii Institute of Marine Biology Department Of Oceanography School of Ocean and Earth Science and Technology University Of Hawaii, Unknown, Hawaii Institute for Marine Biology and NOAA National Ocean Service, Marine Sanctuary Program Partnership, in affiliation with the Coral Reef Assessment and Monitoring Program, 2007 Survey of the Northwestern Hawaiian Islands Coral Reef Ecosystem Reserve: Benthic Data from Digital Still Images (NODC Accession 0000881).

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -178.369
    East_Bounding_Coordinate: -161.919
    North_Bounding_Coordinate: 28.42782
    South_Bounding_Coordinate: 23.05648

  3. What does it look like?

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

    Beginning_Date: 08-Jul-2007
    Ending_Date: 22-Jul-2007
    Currentness_Reference: ground condition

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

  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?

  7. How does the data set describe geographic features?

    Entity_and_Attribute_Overview:
    Original data received as CSV (ASCII) files, which are derived from output of PhotoGrid for all surveyed lines.

    Directory tree is as follows: data/ 0-data/ this denotes original files/directories as received by NODC\

    0-data/ NWHI07 PhotoGrid Data/ Output from Photogrid

    transect file name template: Convention is c_SSSss Transect.CSV c_: fixed, same for every file SSS: first three letters of island/atoll ss: numbered survey at each island/atoll

    Fields in these files: Site Name - usually NA (not available) Station - usually NA Frame No - usually NA Image Date - usually NA, get survey (image) date from filename ID Name - equivalent to TaxonName in PointCount99, this is the species recorded but for some organisms if not identifiable to the species or even genus level then just to taxanomic level ID Code - usually NA

    The following are PhotoGrid parameters equivalent to PointCount parameters of the same name. Point - Point number on the frame X - X coordinate on the image for each point Y - Y coordinate on the image for each point Intensity - value for the point Red - RGB value on the image Green - RGB value on the image Blue - RGB value on the image

    Note, in some files, field=Species is equivalent to ID Name above.

    Notes from Kuulei Rodgers concerning these parameters: "Point X and Y are the coordinates for each of the 50 points that are generated on an image. This way if you want to go back and check if it is correct or what someone called some organism it will regenerate the frame with the random points that were originally used. If for example you see Pavona maldivensis and want to see if that is correct because you don't think it is at that site and may have been interpreted, you can go back and look at point number 7 to see what is under it. The program will use the coordinates to reconstruct the original random points on that frame. Red, Green and Blue are just the exact colors as the person who first did the analysis saw it. Since you can adjust the color balance and the contrast, the program saves the adjustments so it can be revisited if need be later."

    The remaining parameters can be ignored and are usually NA: Total Points,ID Date,Site ID,Site Code,Time Code,Institution,User Name,Habitat,WQS,Length,Depth

    Potential frequently asked question: -The CRAMP website lists available benthic data parameters: coral and substrate cover. Can these be derived from the PhotoGrid data given? How?

    Reply from Ku'ulei Rodgers: We use ACCESS, a relational database that calculates these for us but it can be done in EXCEL as well by sorting alphabetically and deriving a percent of the total for each substrate type. For example if you have 10 points that are Porites compressa and there are 20 frames with 50 points on each, this would be 10 out of 1000 points for the whole transect so 1% cover. This is then done for each substrate type. Then all the coral species percentages are added together for a total coral cover number.

    Note, in some files, field=Species is equivalent to ID Name above.

    Entity_and_Attribute_Detail_Citation: None


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?

    Funding and support: Partnership between the Hawaii Institute for Marine Biology and the National Oceanic and Atmospheric Administration, National Ocean Service, Marine Sanctuary Program

    Coral Reef Assessment and Monitoring Program (CRAMP) support: Funding and support: Hawaii Coral Reef Initiative, National Oceanic and Atmospheric Administration, National Ocean Service, United States Geological Survey, State of Hawaii, Department of Land and Natural Resources, Division of Aquatic Resources, Kahoolawe Island Reserve Commission, United States Fish and Wildlife Service, Coastal Program, Limahuli National Botanical Garden, Save Our Seas

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

    Dr. Jo-Ann Leong
    Hawaii Institute of Marine Biology University of Hawaii
    Principal Investigator
    P.O. Box 1346
    Kaneohe, Hawaii 96744
    USA

    (808) 236-7401 (voice)
    joannleo@hawaii.edu


Why was the data set created?

The surveys provide an important assessment of the status of the coral ecosystem. For CRAMP purposes, the surveys expand the spatial range of habitats and add to the extensive database for the main Hawaiian Islands. These will augment the CRAMP Ecological Gradient Model to compare sites throughout the archipelago and to assess the condition of the sites.


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)
    Non-overlapping digital stills are taken to assess the characteristics of benthic populations via rapid assessment transects (RATs), which are an abbreviated version of the CRAMP long-term monitoring sites. RATs have one-10 m transect instead of 10-10 m transects for the long-term monitoring sites for benthic cover. High resolution digital images are taken along a 10 m transect using an Olympus 5050 zoom digital camera with an Olympus PT050 underwater housing. The camera is mounted to an aluminum monopod frame, 1.7 m from the substrate to provide a 50x69 cm image. A 6 cm bar provides a measurement scale. The software program PhotoGrid (Bird 2001) is used to quantify percent cover, richness and diversity of corals, algal functional groups and substrate cover. Images are downloaded and the 20 non-overlapping images from each 10 m transect are imported into PhotoGrid where 50 randomly selected points are projected onto each image for a total of 1,000 points per transect.

    INSTRUMENT TYPES: digital camera: Olympus 5050 zoom digital camera

    REFERENCES: Brown, E, E Cox, B Tissot, K Rodgers, and W Smith (1999). Evaluation of benthic sampling methods considered for the Coral Reef Assessment and Monitoring Program (CRAMP) in Hawaii. International Conference on Scientific Aspects of Coral Reef Assessment, Monitoring, and Restoration. April 14-16, Ft. Lauderdale, FL.

    Person who carried out this activity:

    Dr. Kuulei Rodgers
    Hawaii Institute of Marine Biology Department Of Oceanography School of Ocean and Earth Science and Technology University Of Hawaii
    P.O. Box 1346
    Kaneohe, HI 96744
    USA

    808-236-7440 (voice)
    kuuleir@hawaii.edu

  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?

  2. How accurate are the geographic locations?

  3. How accurate are the heights or depths?

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

    The 2007 surveys were 100% complete

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

    see Process Step


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: Dataset credit required

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

    NOAA/NESDIS/National Oceanographic Data Center
    Attn: Data Access Group, User Services Team
    SSMC-3 Fourth Floor
    Silver Spring, MD 20910-3282
    USA

    301-713-3277 (voice)
    301-713-3302 (FAX)
    services@nodc.noaa.gov

    Hours_of_Service: 8am-5pm, Monday through Friday
  2. What's the catalog number I need to order this data set?

    Downloadable Data

  3. What legal disclaimers am I supposed to read?

    NOAA makes no warranty regarding these data, expressed or implied, nor does the fact of distribution constitute such a warranty. NOAA, NESDIS, NODC and NCDDC cannot assume liability for any damages caused by any errors or omissions in these data, nor as a result of the failure of these data to function on a particular system.

  4. How can I download or order the data?


Who wrote the metadata?

Dates:
Last modified: 07-Dec-2012
Last Reviewed: 23-Mar-2009
Metadata author:
Mr. Patrick C. Caldwell
NOAA/NESDIS/NODC/NCDDC
Hawaii/US Pacific Liaison
1000 Pope Road, MSB 316
Honolulu, Hawaii 96822
USA

(808)-956-4105 (voice)
(808) 956-2352 (FAX)
caldwell@hawaii.edu

Hours_of_Service: 8 AM to 5 PM weekdays
Contact_Instructions: check services@nodc.noaa.gov if not available
Metadata standard:
FGDC Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)


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