Among the 166 sub-sites surveyed for this category, about 45% were mapped with 100% accuracy. There was a total of 51 sub-sites which were completely mis-identified and subsequently re-classified under other habitat categories, such as Freshwater/Brackish Wetland and Other (Table 6.1j). Many of the fishpond sites have been filled for construction purposes whilst some others have been abandoned for a long time and become high value habitats, e.g. wetlands, or dominated by shrubs and grasses (and thus have been re-identified).

The majority of the sites surveyed were mapped with 100% accuracy. Only two survey sites, ie Site 125a (Tai O) and Site 128a (Trio Beach), had a portion of their area mis-identified (Table 6.1k). About 70% of the mapped area at Tai O was re-classified as Rocky Shore as it was mainly occupied by large, immobile boulders and rocks, intermingled with sandy substratum. The other site is near Trio Beach (Site 128a) where 10% of the site should be re-categorised as intertidal mudflat.

The habitat was mapped with high accuracy and all the shores selected for surveys were identified correctly.