Ecological Monitoring Data

Action and Limit Levels of Disturbance to Waterbirds using Ng Tung, Sheung Yue and Shek Sheung Rivers during Construction Phase

Action Level:

  • Decline in numbers of all waterbird species relative to numbers during Baseline Monitoring such that the Action Level response is triggered; or
  • Decline in numbers of any one waterbird species occurring in significant numbers* during Baseline Monitoring such that the Action Level response is triggered.

Limit Level:

  • Decline in numbers of all waterbird species relative to numbers during baseline monitoring such that the limit level response is triggered; or
  • Decline in numbers of any one waterbird species occurring in significant numbers* during Baseline Monitoring such that the Limit Level response is triggered.

*Note: Whether numbers are significant depend on species and season after collection and evaluation of baseline survey data.

Ecological Monitoring Data (Waterbirds)

YearMonthDaySeasonTotal no. of Waterbird Species from PCs* (High Tide)Total no. of Waterbird Species from PCs*(Low Tide)Impact Waterbird Abundance from PCs* (High Tide)Impact Waterbird Abundance from PCs* (Low Tide)
202013Winter12108183
2020110Winter8113032
2020116Winter68734
2020120Winter1184042
202024Winter8121938
2020212Winter994160
2020220Winter10131767
2020225Winter882562
202032Winter1096446
2020310Winter895733

*PCs = Point Counts

Monitoring Location