Photointerpretive techniques were applied to map the spatial change of seagrass habitat between 1985 and 1988 in Back Sound and southern Core Sound, North Carolina. The method constrains photography to optimize visualization of photic submerged land. It accentuates surface level training and verification of seagrass habitat observed in photographs to minimize classification errors due to variability of photographic signatures of benthic features. The method is unique in its registration of habitat data to concurrent shoreline manuscript base maps from the National Oceanic and Atmospheric Administration, National Ocean Service. Seagrass habitat is abundant in the study area-approximately 7,000 hectares or 35 percent of the subtidal land―with a high degree of overlap in 1985 and 1988.
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Ferguson et al. (2000) studied this question.