While artificial rocky shores may serve a similar habitat function to natural rocky shore if they mimic natural gradients and provide varied microhabitats, vertical seawalls (eg Ap Lei Chau) provide little habitat value. However, the artificial shore located at High Island Reservoir, which is made up of "dollos", was found to support comparable species diversity and abundance than natural rocky shores (see Table G20 of Annex G for details). In addition, coral colonies have been reported to occur in the low tidal region of the habitat. Therefore, ecological value was upgraded from low to medium* (Table 7.1q).

The two selected sites, ie Ocean Park and Chung Hom Kok Park, were found be to mainly occupied by natural vegetation, such as lowland forest, mixed shrubland or shrubby grassland, their ecological value was upgraded from the indicative low to medium and high, respectively (Table 7.1r) (see Table G21 of Annex G for details).

Table 7.1r Rationale for Ecological Value Adjustment of Golf Course/ Urban Park Habitats based on Field Surveys
Site No.	Site Name	Sub-site	Ecological Value After Field Assessment	Rationale for Ecological Value Re-adjustment
157	Ocean Park	a	Medium	The majority of the park area was found to be occupied by natural vegetation habitats, such as lowland forest, mixed shrubland, shrubby grassland and grassland. Little human disturbance was observed in most of the habitat area (except for easily accessible areas).
158	Chung Hom Kok Park	a	High	The majority of the park area was found to be occupied by natural vegetation habitats, such as lowland forest, mixed shrubland, shrubby grassland and grassland. The habitat was relatively intact and subjected to little human disturbance.