Table 4.6    Dolphin encounter rates (sightings per 100 km of survey effort) during the impact monitoring period (September - November 2013) 

Survey Area

Dolphin Monitoring

Encounter rate (STG)
(no. of on-effort dolphin sightings per 100 km of survey effort)

Encounter rate (ANI)
(no. of dolphins from all on-effort sightings per 100 km of survey effort)

Primary Lines Only

Primary Lines Only

West Lantau

Set 1         (September 11, 2013)

34.9

94.8

Set 2         (September 19, 2013)

35.5

112.6

Set 3
(October 9, 2013)

14.1

28.2

Set 4
(October 18, 2013)

19.0

71.1

Set 5
(November 6, 2013)

4.6

27.6

Set 6
(November 15, 2013)

14.9

29.8