Hawaii Coral Reef Assessment and Monitoring Program (CRAMP): Digital Still Images from Transects on Maui, Molokai, and Kauai, 2007 (NODC Accession 0056791)

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Frequently anticipated questions:

What does this data set describe?

Hawaii Coral Reef Assessment and Monitoring Program (CRAMP): Digital Still Images from Transects on Maui, Molokai, and Kauai, 2007 (NODC Accession 0056791)
This dataset consists of digital still transect images (JPG files) from CRAMP surveys taken in 2007 from 9 sites on Maui, 3 sites on Molokai, and 1 site on Kauai. Sites typically have two transects along different isobaths, shallow (~3m) and deep (~10m) lines. Digital images are important for future researchers to resolve any question about how the image data were interpreted for the quantitative database, to provide the opportunity to re-analyze the images using other methods, and to return to the same locations for future comparisons.

In a separate NODC Accession, 0051060, text data files are given of the substrate types and coverages as derived objectively from photographic images using PhotoGrid, a software package which analyzes random points on images of coral reefs and substrate.

Entry_ID Unknown Sensor_Name: digital camera Source_Name: SCUBA Project_Campaign: Coral Reef Assessment and Monitoring Program (CRAMP) Originating_Center: Hawaii Institute of Marine Biology Storage_Medium CSV, JPEG Reference None Online_size: 922061 kilobytes Originator University of Hawaii; State of Hawaii

Resource Description: NODC Accession Number 0056791

  1. How should this data set be cited?

    Jokiel, Dr. Paul , Rodgers, Dr. Kuulei , Hawaii Institute of Marine Biology, Department Of Oceanography, School of Ocean and Earth Science and Technology, University Of Hawaii, Mr. Eric Brown (Molokai), Service, National Park , Mr. Skippy Hau (Maui), Mr. Russ Sparks (Maui), and State of Hawaii, Division of Land and Natural Resources, Division of Aquatic Resources, Unknown, Hawaii Coral Reef Assessment and Monitoring Program (CRAMP): Digital Still Images from Transects on Maui, Molokai, and Kauai, 2007 (NODC Accession 0056791).

    Online Links:

    • https://data.nodc.noaa.gov/accession/0056791

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -159.5121
    East_Bounding_Coordinate: -156.4310
    North_Bounding_Coordinate: 22.2117
    South_Bounding_Coordinate: 20.6012

  3. What does it look like?

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

    Beginning_Date: 06-Feb-2007
    Ending_Date: 09-Oct-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?

    Original data received as JPEG image files.

    Directory tree is as follows:

    data/ 0-data/ this denotes original files/directories as received by NODC

    file: MHI2007sitedates.csv comment: Survey specifics (location, dates, depths)

    subdirectories: 0-data/ 07 KaHan Images/ 07KaHan03m/ transect along 3m isobath filename: 07KaHan03mttff.JPG tt: transect number ff: frame number 07KaHan10m/ transect along 10m isobath

    0-data/ 07CRAMP_SI/ Output from PhotoGrid for various Maui sites SI denotes selected images for analysis by PhotoGrid

    transect file name template: Convention is yyIISSSDDm yy : last two digits of year II : island (sometimes left off) SSS : site (see STATIONS above) DDm : depth in meters TT : transect number ff : frame number (sometimes TT is left off if only one transect, and sometimes .SI is suffixed).

    within 07CRAMP_SI/ there are subdirectories yyIISSSDDm_SI/ subdirectory for depth DDm yyIISSSTT_SI/ secondary subdirectory for transect TT filename: yyIISSSDDMTTff.jpg

    0-data/ 07MaMah03m/ 3m depth at Mahinahina, Maui, filename template above 07MaMah10m/ same for 10m

    0-data/ Ahii Kinau PhotoGrid Images/ all images from Ahii Kinau, Maui subdirectory: AHItt/ where tt: transect number

    filename: AHIttTransectff.JPG tt: transect number ff: frame number

    0-data/ Kamiloloa03m/ 3m depth at Kamilioloa, Molokai, filename template above Kamiloloa10m/ 10m depth

    0-data/ Palaau03m/ 3m depth at Palaau, Molokai, filename template above Palaau10m/ 10m depth

    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?

    Department of Commerce, National Oceanic and Atmospheric Administration, Hawaii Coral Reef Initiative, National Ocean Service, United States Geological Survey, State of Hawaii, Department of Land and Natural Resources, Division of Aquatic Resources, 130 Mahalani Street Wailuku, HI 96793, 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. Paul Jokiel
    Hawaii Institute of Marine Biology University of Hawaii
    Principal Investigator
    P.O. Box 1346
    Kaneohe, Hawaii 96744

    808-236-7440 (voice)

Why was the data set created?

To understand the ecology of Hawaiian coral reefs in relation to other geographic areas and to monitor change at each given site.

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)
    methodology to keep up with advances in technology, replacing video with digital stills. Unlike prior digital cameras, recent cameras have resolution superior to video and the card media can store close to 1,000 high quality images. The initial costs of the equipment are lower and the images can be archived. The valuable in situ time is shorter as well as the time spent processing the images. Frame-grabbing is completely eliminated. The video camera cannot keep an exact distance from the bottom while the still camera mounted on a simple monopod assures a constant distance. With a still camera, there are no oblique angles that can affect results since the camera is held completely vertical by the monopod. It is however important to use consistent methodology when comparing sites spatially and/or temporally. Yet as newer and better technology is introduced it is important to update and upgrade methods. CRAMP began by using video techniques and replaced this with digital stills in 2003.

    Prior to the switch, the compatibility of the methods was assessed through intercalibration, using both methods (video and digital still images) at a large number of sites (30) that encompassed a wide range of coral cover. Once the methods proved compatible, all subsequent surveys were conducted with digital cameras. Non-overlapping digital stills are taken to assess the characteristics of benthic populations. 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.

    Green, R H and S R Smith (1997). Sample program design and environmental impact assessment on coral reef. Proc 8th International Coral Reef Symposium. 2: 1459-1464.

    McCormick, Mark 1994. Comparison of field methods for measuring surface topography and their associations with a tropical reef fish assemblage. Marine Ecology Progress Series 112: 87-96.

    Person who carried out this activity:

    Dr. Paul Jokiel
    Hawaii Institute of Marine Biology University of Hawaii
    Principal Investigator
    P.O. Box 1346
    Kaneohe, Hawaii 96744

    808-236-7440 (voice)

  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

    301-713-3277 (voice)
    301-713-3302 (FAX)

    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?

Last modified: 24-Jan-2017
Last Reviewed: 11-Jan-2010
Metadata author:
Mr. Patrick C. Caldwell
Hawaii/US Pacific Liaison
1000 Pope Road, MSB 316
Honolulu, Hawaii 96822

(808)-956-4105 (voice)
(808) 956-2352 (FAX)

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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