PhotoQuads of Benthic Coral Reef Environments

 

DataSet Contact: Matthew Dunlap

Description: Benthic images of coral reefs are taken using a Canon Powershot 1200 SD. Each image is taken from an altitude of 1 meter above the seafloor, using a monopod. Photos are taken in natural lighting, without the use of a strobe. Images are collected every 0.5 meter along two separate transect lines at each site, for a total of 30 images per site. 

Each image is divided into ten sectors and a single random X,Y coordinate is generated for each sector. The benthic component at each coordinate is classified using a code file.

purpose: The purpose of the photoquads is to provide estimates of percent cover for each benthic component.

Example imagery

Individual data sets are password protected to prevent unauthorized download.  Please email the chair to request access permissions.

Cameras: Canon Powershot 1200 SD

  1. •Digital

  2. •Non-stereo

  3. •Color

  4. •Lighting: Ambient


Data Acquisition: 15,000 images per year

Data Archive: 53,000 images

Platform Details

how to cite: Dunlap, M.J. (2013). Coral Reef Photoquads from the Main Hawaiian Islands. NOAA Pacific Islands Fisheries Science Center, Coral Reef Ecosystem Division, Honolulu, HI