For the accuracy assessment in this case study, an independent third party
surveyed a total of 1,225 randomly selected sample points using the same methods
as those used during field check validations. Overall accuracy for the Main Eight
Hawaiian Islands project was estimated to be 90 % at the major habitat level of the
classification scheme hierarchy and 80 % at the most detailed habitat level.
Table 2.1 List of broad classes and detailed category levels in the hierarchical classification
scheme for the Main Eight Hawaiian Islands (adapted from Coyne et al. 2003)
Broad class
Specific category
Category details
Unconsolidated Sediment (0 to \10 % submerged vegetation)
Mud
Sand
Submerged vegetation
Seagrass
Continuous seagrass (90–100 % cover)
Patchy (discontinuous) seagrass (50 to \90 % cover)
Patchy (discontinuous) seagrass (10 to \50 % cover)
Macroalgae (fleshy and turf)
Continuous macroalgae (90–100 % cover)
Patchy (discontinuous) macroalgae (50 to \90 % cover)
Patchy (discontinuous) macroalgae (10 to \50 % cover)
Coral reef and hardbottom
Coral reef and colonized hardbottom
Linear reef
Aggregated coral
Spur and groove
Individual patch reef
Aggregated patch reef
Scattered coral/rock in unconsolidated Sediment
Colonized pavement
Colonized volcanic rock/boulder
Colonized pavement with sand channels
Uncolonized hardbottom
Reef rubble
Uncolonized pavement
Uncolonized volcanic rock/boulder
Uncolonized pavement with sand channels
Encrusting/coralline algae
Continuous encrusting/coralline algae (90–100 % cover)
Patchy (discontinuous) encrusting/coralline algae (50 to [90 % cover)
Patchy (discontinuous) encrusting/coralline algae (10 to [50 % cover)
Other delineations
Land
Emergent vegetation
Artificial
Unknown
2 Photography Application
39