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)

Year	Month	Day	Season	Total 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)
2020	1	3	Winter	12	10	81	83
2020	1	10	Winter	8	11	30	32
2020	1	16	Winter	6	8	7	34
2020	1	20	Winter	11	8	40	42
2020	2	4	Winter	8	12	19	38
2020	2	12	Winter	9	9	41	60
2020	2	20	Winter	10	13	17	67
2020	2	25	Winter	8	8	25	62
2020	3	2	Winter	10	9	64	46
2020	3	10	Winter	8	9	57	33
2020	3	17	Winter	5	7	20	46
2020	3	24	Winter	9	8	28	26
2020	3	30	Winter	6	8	17	28
2020	4	8	Summer	8	8	41	40
2020	4	14	Summer	3	4	13	37
2020	4	24	Summer	6	7	16	33
2020	4	27	Summer	5	4	19	22
2020	5	5	Summer	4	5	14	32
2020	5	11	Summer	5	8	12	36
2020	5	19	Summer	5	5	18	37
2020	5	27	Summer	4	4	17	37
2020	6	5	Summer	5	5	19	21
2020	6	11	Summer	4	5	8	29
2020	6	19	Summer	3	4	8	23
2020	6	23	Summer	2	5	6	30
2020	7	3	Summer	6	5	12	17
2020	7	7	Summer	3	3	34	16
2020	7	16	Summer	5	4	12	21
2020	7	21	Summer	4	5	8	15
2020	7	31	Summer	3	4	18	22
2020	8	6	Summer	5	6	15	32
2020	8	14	Summer	4	3	12	15
2020	8	20	Summer	4	5	16	18
2020	8	24	Summer	3	5	9	23
2020	9	3	Summer	5	6	13	66
2020	9	8	Summer	4	4	8	30
2020	9	15	Summer	5	7	15	44
2020	9	22	Summer	2	6	11	48
2020	9	28	Summer	5	9	14	56
2020	10	5	Winter	4	6	7	47
2020	10	16	Winter	6	9	21	36
2020	10	20	Winter	5	7	20	37
2020	10	28	Winter	5	7	14	38
2020	11	5	Winter	4	10	31	57
2020	11	9	Winter	7	9	30	68
2020	11	20	Winter	9	8	30	30
2020	11	23	Winter	6	9	24	54
2020	11	30	Winter	6	11	24	65
2020	12	11	Winter	9	9	18	53
2020	12	14	Winter	6	8	18	38
2020	12	21	Winter	8	10	37	52
2020	12	30	Winter	7	6	39	31
2021	1	5	Winter	6	9	24	37
2021	1	15	Winter	8	10	27	45
2021	1	18	Winter	8	11	28	46
2021	1	26	Winter	7	7	27	67
2021	2	5	Winter	5	6	16	38
2021	2	10	Winter	6	7	17	41
2021	2	18	Winter	5	6	14	36
2021	2	26	Winter	6	7	27	35
2021	3	1	Winter	5	8	16	40
2021	3	12	Winter	6	9	20	50
2021	3	16	Winter	5	6	11	39
2021	3	26	Winter	5	7	10	30
2021	3	29	Winter	5	6	15	29
2021	4	8	Summer	4	6	13	36
2021	4	12	Summer	5	6	23	38
2021	4	23	Summer	3	4	10	24
2021	4	26	Summer	5	6	17	33
2021	5	7	Summer	4	5	18	21
2021	5	10	Summer	4	5	15	35
2021	5	17	Summer	4	5	9	28
2021	5	24	Summer	4	3	18	11
2021	6	3	Summer	5	4	19	31
2021	6	7	Summer	4	4	15	26
2021	6	18	Summer	4	4	12	22
2021	6	21	Summer	4	5	15	29
2021	7	2	Summer	3	5	17	24
2021	7	7	Summer	4	4	16	15
2021	7	16	Summer	4	5	17	48
2021	7	22	Summer	4	3	20	25
2021	7	28	Summer	5	4	38	50
2021	8	5	Summer	4	3	16	18
2021	8	13	Summer	4	3	19	20
2021	8	20	Summer	4	4	14	20
2021	8	23	Summer	2	3	10	20
2021	9	10	Summer	8	8	39	56
2021	9	17	Summer	6	12	38	79
2021	9	24	Summer	8	10	68	77
2021	9	28	Summer	7	11	31	93
2021	10	11	Winter	10	13	111	81
2021	10	12	Winter	8	10	76	108
2021	10	21	Winter	9	12	56	109
2021	10	29	Winter	10	11	59	75
2021	11	3	Winter	9	13	32	95
2021	11	12	Winter	10	18	70	105
2021	11	19	Winter	10	14	38	76
2021	11	22	Winter	0	9	0	53
2021	11	26	Winter	11	0	52	0
2021	12	3	Winter	9	11	67	73
2021	12	10	Winter	10	11	49	85
2021	12	17	Winter	10	12	45	76
2021	12	23	Winter	8	8	92	62
2021	12	31	Winter	14	12	94	96
2022	1	7	Winter	11	11	66	66
2022	1	14	Winter	10	10	54	85
2022	1	21	Winter	9	10	30	36
2022	1	28	Winter	8	11	31	38
2022	2	4	Winter	10	11	36	29
2022	2	11	Winter	10	10	41	33
2022	2	18	Winter	8	9	34	45
2022	2	25	Winter	10	12	40	46
2022	3	2	Winter	9	11	26	45
2022	3	11	Winter	9	8	39	38
2022	3	18	Winter	6	10	18	38
2022	3	22	Winter	8	9	34	36
2022	4	1	Summer	8	8	38	58
2022	4	6	Summer	6	11	15	37
2022	4	11	Summer	9	0	22	0
2022	4	14	Summer	0	7	0	33
2022	4	22	Summer	7	8	22	59
2022	4	29	Summer	8	9	29	57
2022	5	6	Summer	6	5	38	20
2022	5	13	Summer	6	8	29	89
2022	5	17	Summer	7	7	54	58
2022	5	27	Summer	3	4	7	25
2022	6	2	Summer	6	5	26	27
2022	6	10	Summer	3	6	16	29
2022	6	13	Summer	3	4	19	25
2022	6	22	Summer	3	5	25	42
2022	6	28	Summer	3	5	16	35
2022	7	6	Summer	5	5	21	27
2022	7	14	Summer	4	5	14	23
2022	7	20	Summer	4	3	15	16
2022	7	29	Summer	6	7	28	38
2022	8	5	Summer	7	7	67	47
2022	8	9	Summer	2	6	20	76
2022	8	19	Summer	3	5	11	15
2022	8	26	Summer	3	6	12	17
2022	9	2	Summer	6	8	15	22
2022	9	9	Summer	8	10	20	52
2022	9	13	Summer	5	5	21	42
2022	9	23	Summer	7	6	18	41
2022	9	24	Summer	11	9	20	45
2022	10	7	Winter	9	5	26	21
2022	10	14	Winter	8	9	28	28
2022	10	21	Winter	9	7	24	26
2022	10	26	Winter	8	9	26	28
2022	11	1	Winter	8	10	29	45
2022	11	11	Winter	6	10	26	40
2022	11	15	Winter	9	8	42	59
2022	11	25	Winter	11	8	20	79
2022	11	29	Winter	7	9	26	31
2022	12	6	Winter	7	10	25	45
2022	12	13	Winter	7	9	28	72
2022	12	23	Winter	7	13	29	50
2022	12	28	Winter	6	10	23	44
2023	1	6	Winter	8	10	19	29
2023	1	12	Winter	9	8	23	28
2023	1	16	Winter	4	7	18	42
2023	1	26	Winter	6	9	10	51
2023	2	3	Winter Season	7	9	20	44
2023	2	9	Winter Season	7	10	25	44
2023	2	17	Winter Season	4	8	17	31
2023	2	21	Winter Season	6	8	16	41
2023	3	1	Winter Season	8	12	18	37
2023	3	7	Winter Season	9	12	24	88
2023	3	14	Winter Season	6	10	15	30
2023	3	22	Winter Season	7	7	18	44
2023	3	29	Winter Season	8	7	33	21
2023	4	6	Summer Season	5	8	8	28
2023	4	11	Summer Season	5	5	20	18
2023	4	19	Summer Season	7	9	20	53
2023	4	24	Summer Season	6	9	38	21
2023	5	4	Summer Season	5	6	21	28
2023	5	10	Summer Season	2	7	26	34
2023	5	16	Summer Season	5	6	10	31
2023	5	24	Summer Season	5	4	25	25
2023	6	2	Summer Season	3	4	13	30
2023	6	5	Summer Season	7	3	17	44
2023	6	15	Summer Season	2	4	12	31
2023	6	21	Summer Season	6	6	22	31
2023	6	30	Summer Season	3	6	15	38
2023	7	4	Summer Season	6	4	59	22
2023	7	11	Summer Season	4	6	21	35
2023	7	20	Summer Season	3	8	16	41
2023	7	25	Summer Season	4	7	23	35
2023	8	4	Summer Season	3	8	15	44
2023	8	7	Summer Season	3	6	15	29
2023	8	14	Summer Season	3	6	11	50
2023	8	30	Summer Season	6	6	14	21
2023	8	31	Summer Season	6	5	20	25
2023	9	6	Summer Season	5	8	12	57
2023	9	15	Summer Season	5	8	22	75
2023	9	21	Summer Season	7	9	21	38
2023	9	29	Summer Season	7	8	23	35
2023	10	3	Winter Season	6	9	47	36
2023	10	12	Winter Season	7	11	26	46
2023	10	16	Winter Season	8	11	36	107
2023	10	27	Winter Season	7	10	26	23
2023	11	3	Winter Season	10	10	28	54
2023	11	10	Winter Season	8	13	36	73
2023	11	15	Winter Season	9	9	19	47
2023	11	21	Winter Season	6	12	25	78
2023	11	29	Winter Season	11	9	47	58
2023	12	6	Winter Season	11	9	40	46
2023	12	13	Winter Season	7	10	16	47
2023	12	19	Winter Season	6	13	21	46
2023	12	27	Winter Season	8	11	16	57
2024	1	5	Winter Season	8	11	20	54
2024	1	12	Winter Season	9	10	21	41
2024	1	18	Winter Season	9	8	43	34
2024	1	25	Winter Season	6	10	19	37
2024	1	31	Winter Season	7	9	22	40
2024	2	8	Winter Season	7	10	13	62
2024	2	14	Winter Season	9	8	34	27
2024	2	21	Winter Season	8	8	15	28
2024	2	26	Winter Season	6	9	11	32
2024	3	4	Winter Season	8	10	44	39
2024	3	12	Winter Season	9	7	16	23
2024	3	21	Winter Season	6	7	25	22
2024	3	28	Winter Season	10	10	31	24
2024	4	5	Summer Season	6	7	17	28
2024	4	11	Summer Season	5	10	33	43
2024	4	19	Summer Season	5	6	11	24
2024	4	25	Summer Season	4	6	26	25
2024	5	3	Summer Season	4	5	21	23
2024	5	7	Summer Season	5	6	15	31
2024	5	17	Summer Season	4	5	20	24
2024	5	23	Summer Season	5	7	21	33
2024	5	31	Summer Season	7	9	49	28
2024	6	6	Summer Season	7	7	25	42
2024	6	14	Summer Season	5	8	39	41
2024	6	21	Summer Season	8	8	33	37
2024	6	26	Summer Season	7	9	49	40
2024	7	5	Summer Season	5	4	30	31
2024	7	12	Summer Season	7	6	21	22
2024	7	19	Summer Season	6	8	32	51
2024	7	26	Summer Season	9	8	43	38
2024	8	1	Summer Season	9	8	38	17
2024	8	5	Summer Season	3	8	11	40
2024	8	16	Summer Season	4	5	17	23
2024	8	19	Summer Season	10	10	40	28
2024	8	30	Summer Season	8	10	38	17
2024	9	2	Summer Season	4	8	11	26
2024	9	14	Summer Season	5	4	18	10
2024	9	17	Summer Season	7	6	21	26
2024	9	23	Summer Season	6	5	16	33
2024	10	2	Winter Season	6	9	51	50
2024	10	9	Winter Season	10	9	61	74
2024	10	16	Winter Season	7	9	35	53
2024	10	22	Winter Season	7	8	39	55
2024	10	28	Winter Season	9	9	56	69
2024	11	7	Winter Season	8	10	34	66
2024	11	15	Winter Season	10	11	58	56
2024	11	23	Winter Season	11	11	37	93
2024	11	29	Winter Season	10	12	81	84

*PCs = Point Counts

Monitoring Location