The sites for collecting ground validation underwater video clips and still imagery were selected to specifically investigate habitat types and gradients of habitat spectral signatures and spatial extent. All areas where uncertainty existed on the part of the photo interpreter during habitat delineation were investigated in the field. Waypoints in these habitats areas were generated on the georeferenced imagery using a GIS. The waypoints were then loaded into a GPS and, using a boat, were navigated to. Underwater video clips or still imagery and exact GPS positioning were obtained. For GPS positioning, one hundred GPS positions were collected at one-second intervals. The 100 positions were averaged to determine the GPS position of each survey point. The data were post processed for differential correction. The type(s) of seafloor habitat found in the vicinity (a 10 m circumference) of each site was explored. If needed, additional underwater or still imagery and GPS positions were collected to evaluate seafloor habitat transitions for areas being mapped and in relation to the minimum mapping unit (MMU). The sites for collecting accuracy assessment underwater video clips or still imagery were determined by a GIS-based, stratified random sampling (StRS) technique. 30-40 points were randomly placed within each Detailed Biological Cover class in the map using tools in ArcGIS at a minimum distance of 30 m apart. Site locations were loaded into the GPS. A boat, kayak, or jetski was used to navigate to the site. Site positional accuracy was 1-3 m. At each site, a Sea Viewer 950 underwater color video drop camera with a Sea-trak GPS video overlay or color digital camera in an underwater housing was used to take pictures and/or video of the site. The camera was lowered to the bottom and either still images of video clips of length 30-120 seconds was collected.
Process_Contacts_Information: Contact_Information Contact_Organization_Primary Contact_Organization Analytical Laboratories of Hawaii, LLC Contact_Person Miles Anderson (deceased) Contact_Position Principal Investigator Contact_Address Address_Type mailing and physical address Address 1320 Aalapapa Dr. City Kailua State_or_Province Hawaii Postal_Code 96734 Country USA Contact_Voice_Telephone Not Available
Contact_Organization_Primary Contact_Organization NOAA National Centers for Coastal Ocean Science Contact_Person Don Field Contact_Position Principal Investigator Contact_Address Address_Type mailing and physical address Address 101 Pivers Island Road City Beaufort State_or_Province North Carolina Postal_Code 28516 Country USA Contact_Voice_Telephone 252-728-8770 Contact_Facsimile_Telephone 252-838-0809 Contact_Electronic_Mail_Address Don.Field@noaa.gov Hours_of_Service 0800 - 1700, Monday to Friday, EST
Contact_Organization_Primary Contact_Organization Florida Fish and Wildlife Conservation Commission, Fish and Wildlife Research Institute Contact_Person Henry Norris Contact_Position Program Manager Contact_Address Address_Type mailing and physical address Address 100 Eighth Avenue SE City St. Petersburg State_or_Province Florida Postal_Code 33701-5020 Country USA Contact_Voice_Telephone 727-896-8626 Contact_Facsimile_Telephone 727-823-0166 Contact_Electronic_Mail_Address henry.norris@MyFWC.com Hours_of_Service 0800 - 1700, Monday to Friday, EST\
Contact_Organization_Primary Contact_Organization National Coral Reef Institute Contact_Person Brian Walker Contact_Position Research Scientist Contact_Address Address_Type mailing and physical address Address 8000 North Ocean Drive City Dania Beach State_or_Province Florida Postal_Code 33004 Country USA Contact_Voice_Telephone (954) 262-3675 Contact_Facsimile_Telephone (954) 262-4027 Contact_Electronic_Mail_Address firstname.lastname@example.org Hours_of_Service 0800 - 1700, Monday to Friday, EST
The IKONOS satellite imagery used for benthic habitat mapping can be obtained in GeoTIFF format from <http://nosimagery.noaa.gov/images/ikonos/fl_keys_ikonos_noaa.kml>