Appendix A
Phase 1 Dredging: Light Attenuation Coefficient Monitoring
(Oceanica 2010g)
Oceanica: Fremantle Ports: Inner Harbour Deepening Project, Seagrass Health Monitoring Report – Post Dredge
21
Entrance Channel Area– Zone of Potential Effect
SH18
0.3
Light Attenuation Coefficient (m‐1)
0.25
0.2
0.15
0.1
0.05
0
Date
Median
Trigger for Level 1 Management
SH41A
0.3
Light Attenuation Coefficient (m‐1)
0.25
0.2
0.15
0.1
0.05
0
Date
Median
Figure A.1
Trigger for Level 1 Management
Rolling 14-day median LAC at seagrass health monitoring sites located to the south
of Fremantle Harbour entrance, within the predicted zone of potential effect (SH18 –
top; SH41A - bottom). LAC thresholds pertaining to Level 1 management triggers
are also presented.
Oceanica: Fremantle Ports: Inner Harbour Deepening Project, Seagrass Health Monitoring Report – Post Dredge
23
Entrance Channel Area – Zone of Potential Influence
WP1
0.3
Light Attenuation Coefficient (m‐1)
0.25
0.2
0.15
0.1
0.05
0
Median
Date
Trigger for Level 1 Management
SH43
0.3
Light Attenuation Coefficient (m‐1)
0.25
0.2
0.15
0.1
0.05
0
Median
Figure A.2
24
Date
Trigger for Level 1 Management
Rolling 14-day median LAC at seagrass health monitoring sites located to the south
of Fremantle Harbour entrance, within the predicted zone of potential influence
(WP1 – top; SH43 - bottom). LAC thresholds pertaining to Level 1 management
triggers are also presented.
Oceanica: Fremantle Ports: Inner Harbour Deepening Project, Seagrass Health Monitoring Report – Post Dredge
Entrance Channel Area – “Reference” Sites
SH44
0.3
Light Attenuation Coefficient (m‐1)
0.25
0.2
0.15
0.1
0.05
0
Date
Median
SH45
0.3
Light Attenuation Coefficient (m ‐1 )
0.25
0.2
0.15
0.1
0.05
0
Date
Median
Figure A.3
Rolling 14-day median LAC at seagrass health monitoring sites located to the south
of Fremantle Harbour entrance, at reference locations (SH44 - top; SH45 - bottom).
Management triggers are not applicable to reference sites.
Oceanica: Fremantle Ports: Inner Harbour Deepening Project, Seagrass Health Monitoring Report – Post Dredge
25
Rous Head Area – Zone of Potential Loss
SM46B
0.3
Light Attenuation Coefficient (m‐1)
0.25
0.2
0.15
0.1
0.05
0
Date
Median
SM52B
0.3
Light Attenuation Coefficient (m‐1)
0.25
0.2
0.15
0.1
0.05
0
Date
Median
Figure A.4
26
Rolling 14-day median LAC at seagrass health monitoring sites located to the north
of Fremantle Harbour entrance, within the predicted zone of potential loss (SM46B top; SM52B - bottom). Management triggers are not applicable to sites located
within the zone of potential loss.
Oceanica: Fremantle Ports: Inner Harbour Deepening Project, Seagrass Health Monitoring Report – Post Dredge
Rous Head Area – Zone of Potential Effect
SH12A
0.3
Light Attenuation Coefficient (m ‐1 )
0.25
0.2
0.15
0.1
0.05
0
Median
Level 1 Trigger
Date
Level 2 Trigger
Level 3 Trigger
SH36A Loggers Missing
Figure A.5
Rolling 14-day median LAC at seagrass health monitoring sites located to the north
of Fremantle Harbour entrance, within the predicted zone of potential effect (SH12A
- top; SH36A - bottom). LAC thresholds pertaining to Level 1, 2 & 3 management
triggers are also presented.
* Note: No data received at site SH36A, due to damage or loss of loggers.
Oceanica: Fremantle Ports: Inner Harbour Deepening Project, Seagrass Health Monitoring Report – Post Dredge
27
Rous Head Area – Zone of Potential Influence
SH10A Loggers Damaged or Missing
(from 11th – 25th January and 8th February – 8th March 2010)
Rolling 13-day median LAC from 26th January to 7th February 2010 = 0.066 m-1
Rolling 13-day median LAC from 9-21st March 2010 = 0.083 m-1
Rolling 14-day median LAC Trigger for Level 1 Management = 0.056 m-1
SH11A
0.3
Light Attenuation Coefficient (m‐1)
0.25
0.2
0.15
0.1
0.05
0
Median
Figure A.6
28
Date
Trigger for Level 1 Management
Rolling 14-day median LAC at seagrass health monitoring sites located to the north
of Fremantle Harbour entrance, within the predicted zone of potential influence
(SH10A - top; SH11A - bottom). LAC threshold pertaining to the Level 1 management
trigger is also presented (N.B. Level 2 management is triggered if median LAC
exceeds Level 1 trigger for ≥ 21 days).
Oceanica: Fremantle Ports: Inner Harbour Deepening Project, Seagrass Health Monitoring Report – Post Dredge
Rous Head Area – “Reference” Sites
SH30
0.3
Light Attenuation Coefficient (m‐1)
0.25
0.2
0.15
0.1
0.05
0
Date
Median
SH38A
0.3
Light Attenuation Coefficient (m‐1 )
0.25
0.2
0.15
0.1
0.05
0
Date
Median
Figure A.7
Rolling 14-day median LAC at seagrass health monitoring sites located to the north
of Fremantle Harbour entrance, within the predicted zone of potential influence
(SH30 – top; SH38A - bottom). Management triggers are not applicable to reference
sites.
Oceanica: Fremantle Ports: Inner Harbour Deepening Project, Seagrass Health Monitoring Report – Post Dredge
29
Deep Water Channel – Zone of Potential Influence
SH2
0.3
Light Attenuation Coefficient (m‐1)
0.25
0.2
0.15
0.1
0.05
0
Date
Median
Trigger for Level 1 Management
SH5
0.3
Light Attenuation Coefficient (m‐1)
0.25
0.2
0.15
0.1
0.05
0
Date
Median
Figure A.8
30
Trigger for Level 1 Management
Rolling 14-day median LAC at seagrass health monitoring sites located adjacent to
the Deep Water Channel, within the predicted zone of potential influence (SH2 - top;
SH5 - bottom). LAC threshold pertaining to the Level 1 management trigger is also
presented (N.B. Level 2 management is triggered if median LAC exceeds Level 1
trigger for ≥ 21 days)..
Oceanica: Fremantle Ports: Inner Harbour Deepening Project, Seagrass Health Monitoring Report – Post Dredge
Deep Water Channel – Zone of Potential Effect
SH46
0.3
Light Attenuation Coefficient (m‐1)
0.25
0.2
0.15
0.1
0.05
0
Date
Median
Trigger for Level 1 Management
Trigger for Level 2 Management
SH47 Loggers Missing
Figure A.9
Rolling 14-day median LAC at seagrass health monitoring sites located adjacent to
the Deep Water Channel, within the predicted zone of potential effect (SH46 - top;
SH47* - bottom). LAC thresholds pertaining to Level 1 and 2 management triggers
are also presented.
* Note: No data received at site SH47, due to damage or loss of loggers.
Oceanica: Fremantle Ports: Inner Harbour Deepening Project, Seagrass Health Monitoring Report – Post Dredge
31
Offshore Disposal Area – Zone of Potential Influence
SH7
0.3
Light Attenuation Coefficient (m‐1)
0.25
0.2
0.15
0.1
0.05
0
Date
Median
Trigger for Level 1 Management
SH51
0.3
Light Attenuation Coefficient (m‐1)
0.25
0.2
0.15
0.1
0.05
0
Date
Median
Figure A.10
32
Trigger for Level 1 Management
Rolling 14-day median LAC at seagrass health monitoring sites located adjacent to
the Offshore Disposal Area, within the predicted zone of potential influence (SH7 top; SH51 - bottom). LAC threshold pertaining to the Level 1 management trigger is
also presented (N.B. Level 2 or 3 management is triggered if median LAC exceeds
Level 1 trigger for ≥ 21 days or ≥ 28 days, respectively).
Oceanica: Fremantle Ports: Inner Harbour Deepening Project, Seagrass Health Monitoring Report – Post Dredge
Offshore Disposal Area – Zone of Potential Effect
SH49 Loggers Damaged or Missing (from 14th February to 8th March 2010)
Rolling 7-day median LAC from 7-13th February 2010 = 0.038 m-1
Rolling 13-day median LAC from 9-21st March 2010 = 0.051 m-1
Rolling 14-day median LAC Trigger for Level 1 Management = 0.056 m-1
SH50 Loggers Missing (from 14th February to 9th March 2010)
Rolling 7-day median LAC from 8-14th February 2010 = 0.042 m-1
Rolling 12-day median LAC from 10-21st March 2010 = 0.069 m-1
Rolling 14-day median LAC Trigger for Level 1 & 2 Management = 0.059 m-1 & 0.076 m-1
Figure A.11
Rolling median LAC at seagrass health monitoring sites located adjacent to the
Offshore Disposal Area, within the predicted zone of potential effect (SH49 - top;
SH50 - bottom).
Oceanica: Fremantle Ports: Inner Harbour Deepening Project, Seagrass Health Monitoring Report – Post Dredge
33
Offshore – Reference Sites
SH32
0.3
Light Attenuation Coefficient (m‐1 )
0.25
0.2
0.15
0.1
0.05
0
Date
Median
SH33
0.3
Light Attenuation Coefficient (m‐1)
0.25
0.2
0.15
0.1
0.05
0
Date
Median
Figure A.12(a) Rolling 14-day median LAC at offshore reference seagrass health monitoring sites,
outside the predicted zone of potential influence (SH32 - top; SH33 - bottom).
Management triggers are not applicable to reference sites.
34
Oceanica: Fremantle Ports: Inner Harbour Deepening Project, Seagrass Health Monitoring Report – Post Dredge
SH34
0.3
Light Attenuation Coefficient (m‐1)
0.25
0.2
0.15
0.1
0.05
0
Date
Median
SH35
0.3
Light Attenuation Coefficient (m ‐1 )
0.25
0.2
0.15
0.1
0.05
0
Date
Median
Figure A.12(b) Rolling 14-day median LAC at offshore reference seagrass health monitoring sites,
outside the predicted zone of potential influence (SH34 - top; SH35 - bottom).
Management triggers are not applicable to reference sites.
Oceanica: Fremantle Ports: Inner Harbour Deepening Project, Seagrass Health Monitoring Report – Post Dredge
35
Appendix B
Phase 2 Dredging: Light Attenuation Coefficient Monitoring
(Oceanica 2010k, 2011)
Oceanica: Fremantle Ports: Inner Harbour Deepening Project, Seagrass Health Monitoring Report – Post Dredge
37
Entrance Channel Area – Zone of Potential Effect
SH18
0.3
Light Attenuation Coefficient (m‐1)
0.25
0.2
0.15
0.1
0.05
30/12/10
04/01/11
30/12/10
04/01/11
20/12/10
15/12/10
10/12/10
25/12/10
Level 3 Trigger
05/12/10
30/11/10
25/11/10
20/11/10
15/11/10
10/11/10
05/11/10
31/10/10
26/10/10
21/10/10
11/10/10
06/10/10
01/10/10
16/10/10
Date
Level 2 Trigger
Level 1 Trigger
25/12/10
Median
26/09/10
21/09/10
16/09/10
11/09/10
06/09/10
01/09/10
27/08/10
22/08/10
0
Level 4 Trigger
SH41
0.30
Light Attenuation Coefficient (m‐1)
0.25
0.20
0.15
0.10
0.05
Median
Figure B.1
Level 1 Trigger
Date
Level 2 Trigger
Level 3 Trigger
20/12/10
15/12/10
10/12/10
05/12/10
30/11/10
25/11/10
20/11/10
15/11/10
10/11/10
05/11/10
31/10/10
26/10/10
21/10/10
16/10/10
11/10/10
06/10/10
01/10/10
26/09/10
21/09/10
16/09/10
11/09/10
06/09/10
01/09/10
27/08/10
22/08/10
0.00
Level 4 Trigger
Rolling 14-day median LAC at seagrass health monitoring sites located to the south
of Fremantle Harbour entrance, within the predicted zone of potential effect (SH18 –
top; SH41 – bottom). LAC thresholds pertaining to Level 1, 2, 3 & 4 management
triggers are also presented.
Oceanica: Fremantle Ports: Inner Harbour Deepening Project, Seagrass Health Monitoring Report – Post Dredge
39
Entrance Channel Area – Zone of Potential Influence
WP1
0.3
Light Attenuation Coefficient (m‐1)
0.25
0.2
0.15
0.1
0.05
10/12/10
15/12/10
20/12/10
25/12/10
30/12/10
04/01/11
15/12/10
20/12/10
25/12/10
30/12/10
04/01/11
05/12/10
30/11/10
25/11/10
20/11/10
15/11/10
10/11/10
10/12/10
Date
Median
05/11/10
31/10/10
26/10/10
21/10/10
16/10/10
11/10/10
06/10/10
01/10/10
26/09/10
21/09/10
16/09/10
11/09/10
06/09/10
01/09/10
27/08/10
22/08/10
0
Trigger for Level 1 Management
SH43
0.40
Light Attenuation Coefficient (m‐1)
0.35
0.30
0.25
0.20
0.15
0.10
0.05
Median
Figure B.2
40
Date
05/12/10
30/11/10
25/11/10
20/11/10
15/11/10
10/11/10
05/11/10
31/10/10
26/10/10
21/10/10
16/10/10
11/10/10
06/10/10
01/10/10
26/09/10
21/09/10
16/09/10
11/09/10
06/09/10
01/09/10
27/08/10
22/08/10
0.00
Trigger for Level 1 Management
Rolling 14-day median LAC at seagrass health monitoring sites located to the south
of Fremantle Harbour entrance, within the predicted zone of potential influence
(WP1 – top; SH43 – bottom). LAC threshold pertaining to level 1 management
triggers are also presented.
Oceanica: Fremantle Ports: Inner Harbour Deepening Project, Seagrass Health Monitoring Report – Post Dredge
Figure B.3
25/11/10
30/11/10
05/12/10
10/12/10
15/12/10
20/12/10
25/12/10
30/12/10
04/01/11
05/12/10
10/12/10
15/12/10
20/12/10
25/12/10
30/12/10
04/01/11
31/10/10
26/10/10
21/10/10
16/10/10
11/10/10
06/10/10
01/10/10
26/09/10
21/09/10
16/09/10
11/09/10
06/09/10
01/09/10
27/08/10
22/08/10
30/11/10
0.00
20/11/10
0.05
25/11/10
0.10
15/11/10
0.15
20/11/10
0.20
10/11/10
0.25
15/11/10
0.30
05/11/10
SH45
10/11/10
Date
05/11/10
31/10/10
26/10/10
21/10/10
16/10/10
11/10/10
06/10/10
01/10/10
26/09/10
21/09/10
16/09/10
11/09/10
06/09/10
01/09/10
27/08/10
22/08/10
Light Attenuation Coefficient (m‐1)
Light Attenuation Coefficient (m‐1)
Entrance Channel Area – ‘Reference’ Sites
SH44
0.30
0.25
0.20
0.15
0.10
0.05
0.00
Date
Median
Rolling 14-day median LAC (except open symbol = 8-day median; see text) at
seagrass health monitoring sites located to the south of Fremantle Harbour
entrance, at reference locations (SH44 – top; SH45 – bottom). Management triggers
are not applicable to reference sites.
Oceanica: Fremantle Ports: Inner Harbour Deepening Project, Seagrass Health Monitoring Report – Post Dredge
41
Rous Head Area – Zone of Potential Loss
SM46B
0.3
Light Attenuation Coefficient (m‐1)
0.25
0.2
0.15
0.1
0.05
05/11/10
10/11/10
15/11/10
20/11/10
25/11/10
30/11/10
05/12/10
10/12/10
15/12/10
20/12/10
25/12/10
30/12/10
04/01/11
05/11/10
10/11/10
15/11/10
20/11/10
25/11/10
30/11/10
05/12/10
10/12/10
15/12/10
20/12/10
25/12/10
30/12/10
04/01/11
31/10/10
26/10/10
21/10/10
16/10/10
11/10/10
06/10/10
01/10/10
26/09/10
21/09/10
16/09/10
11/09/10
06/09/10
01/09/10
27/08/10
22/08/10
0
Date
SM52B
0.3
Light Attenuation Coefficient (m‐1)
0.25
0.2
0.15
0.1
0.05
31/10/10
26/10/10
21/10/10
16/10/10
11/10/10
06/10/10
01/10/10
26/09/10
21/09/10
16/09/10
11/09/10
06/09/10
01/09/10
27/08/10
22/08/10
0
Date
Median
Figure B.4
42
Rolling 14-day median LAC (except open symbol = 8-day median; see text) at
seagrass health monitoring sites located to the north of Fremantle Harbour
entrance, within the predicted zone of potential loss (SM46B – top; SM52B –
bottom). Management triggers are not applicable to sites within the zone of
potential loss.
Oceanica: Fremantle Ports: Inner Harbour Deepening Project, Seagrass Health Monitoring Report – Post Dredge
Rous Head Area – Zone of Potential Effect
SH12A
0.3
Light Attenuation Coefficient (m‐1)
0.25
0.2
0.15
0.1
0.05
04/01/11
30/12/10
25/12/10
20/12/10
15/12/10
10/12/10
05/12/10
30/11/10
25/11/10
20/11/10
15/11/10
10/11/10
05/11/10
31/10/10
26/10/10
21/10/10
16/10/10
11/10/10
06/10/10
01/10/10
26/09/10
21/09/10
16/09/10
11/09/10
06/09/10
01/09/10
27/08/10
22/08/10
0
Date
Median
Level 1 Trigger
Level 2 Trigger
Level 3 Trigger
Level 4 Trigger
SH36A
0.3
Light Attenuation Coefficient (m‐1)
0.25
0.2
0.15
0.1
0.05
Median
Figure B.5
Level 1 Trigger
Date
Level 2 Trigger
Level 3 Trigger
04/01/11
30/12/10
25/12/10
20/12/10
15/12/10
10/12/10
05/12/10
30/11/10
25/11/10
20/11/10
15/11/10
10/11/10
05/11/10
31/10/10
26/10/10
21/10/10
16/10/10
11/10/10
06/10/10
01/10/10
26/09/10
21/09/10
16/09/10
11/09/10
06/09/10
01/09/10
27/08/10
22/08/10
0
Level 4 Trigger
Rolling 14-day median LAC at seagrass health monitoring sites located to the north
of Fremantle Harbour entrance, within the predicted zone of potential effect (SH12A
– top; SH36A – bottom). LAC thresholds pertaining to Level 1, 2, 3 & 4 management
triggers are also presented.
Oceanica: Fremantle Ports: Inner Harbour Deepening Project, Seagrass Health Monitoring Report – Post Dredge
43
Rous Head Area – Zone of Potential Influence
SH10A
0.30
Light Attenuation Coefficient (m‐1)
0.25
0.20
0.15
0.10
0.05
05/01/11
31/12/10
06/12/10
05/12/10
26/12/10
01/12/10
30/11/10
21/12/10
26/11/10
25/11/10
16/12/10
21/11/10
11/12/10
16/11/10
20/11/10
11/11/10
06/11/10
15/11/10
Date
Median
01/11/10
27/10/10
22/10/10
17/10/10
12/10/10
07/10/10
02/10/10
27/09/10
22/09/10
17/09/10
12/09/10
07/09/10
02/09/10
28/08/10
23/08/10
0.00
Level 1 Trigger
SH11A
0.30
Light Attenuation Coefficient (m‐1)
0.25
0.20
0.15
0.10
0.05
Median
Figure B.6
44
Date
04/01/11
30/12/10
25/12/10
20/12/10
15/12/10
10/12/10
10/11/10
05/11/10
31/10/10
26/10/10
21/10/10
16/10/10
11/10/10
06/10/10
01/10/10
26/09/10
21/09/10
16/09/10
11/09/10
06/09/10
01/09/10
27/08/10
22/08/10
0.00
Level 1 Trigger
Rolling 14-day median LAC at seagrass health monitoring sites located to the north
of Fremantle Harbour entrance, within the predicted zone of potential influence
(SH10A – top; SH11A – bottom). LAC thresholds pertaining to Level 1 management
triggers are also presented.
Oceanica: Fremantle Ports: Inner Harbour Deepening Project, Seagrass Health Monitoring Report – Post Dredge
Figure B.7
05/12/10
10/12/10
15/12/10
20/12/10
25/12/10
30/12/10
04/01/11
05/12/10
10/12/10
15/12/10
20/12/10
25/12/10
30/12/10
04/01/11
05/11/10
31/10/10
26/10/10
21/10/10
16/10/10
11/10/10
06/10/10
01/10/10
26/09/10
21/09/10
16/09/10
11/09/10
06/09/10
01/09/10
27/08/10
22/08/10
30/11/10
0.00
25/11/10
0.05
30/11/10
0.10
20/11/10
0.15
25/11/10
0.20
15/11/10
0.25
20/11/10
0.30
10/11/10
SH38A
15/11/10
Date
Median
10/11/10
05/11/10
31/10/10
26/10/10
21/10/10
16/10/10
11/10/10
06/10/10
01/10/10
26/09/10
21/09/10
16/09/10
11/09/10
06/09/10
01/09/10
27/08/10
22/08/10
Light Attenuation Coefficient (m‐1)
Light Attenuation Coefficient (m‐1)
Rous Head Area – ‘Reference’ Sites
SH30
0.30
0.25
0.20
0.15
0.10
0.05
0.00
Date
Median
Rolling 14-day median LAC at seagrass health monitoring sites located to the north
of Fremantle Harbour entrance, within the predicted zone of potential influence
(SH30 – top; SH38A – bottom). Management triggers are not applicable to reference
sites.
Oceanica: Fremantle Ports: Inner Harbour Deepening Project, Seagrass Health Monitoring Report – Post Dredge
45
Offshore Disposal Area – Zone of Potential Influence
SH7 Loggers Missing
(N.B. Rolling 10-day median LAC from 21st to 30th August 2010 = 0.068 m-1;
Rolling 13-day median LAC from 30th September to 12th October 2010 = 0.067 m-1
Rolling 14-day median LAC Trigger for Level 1 Management = 0.050 m-1)
SH51
0.30
Light Attenuation Coefficient (m‐1)
0.25
0.20
0.15
0.10
0.05
0.00
Date
Median
Figure B.8
46
Level 1 Trigger
Rolling 14-day median LAC at seagrass health monitoring sites located adjacent to
the Offshore Disposal Area, within the predicted zone of potential influence (SH7 –
top; SH51 – bottom). LAC thresholds pertaining to Level 1 management triggers are
also presented.
Oceanica: Fremantle Ports: Inner Harbour Deepening Project, Seagrass Health Monitoring Report – Post Dredge
Offshore Disposal Area – Zone of Potential Effect
SH49B
0.30
Light Attenuation Coefficient (m‐1)
0.25
0.20
0.15
0.10
0.05
0.00
Median
Level 1 Trigger
Date
Level 2 Trigger
Level 3 Trigger
Level 4 Trigger
SH50B
0.3
Light Attenuation Coefficient (m‐1)
0.25
0.2
0.15
0.1
0.05
0
Median
Figure B.9
Level 1 Trigger
Date
Level 2 Trigger
Level 3 Trigger
Level 4 Trigger
Rolling 14-day median LAC at seagrass health monitoring sites located adjacent to
the Offshore Disposal Area, within the predicted zone of potential effect (SH49B –
top; SH50B – bottom). LAC thresholds pertaining to Level 1, 2, 3 & 4 management
triggers are also presented.
Oceanica: Fremantle Ports: Inner Harbour Deepening Project, Seagrass Health Monitoring Report – Post Dredge
47
Deep Water Channel – Zone of Potential Influence
SH2
0.30
Light Attenuation Coefficient (m‐1)
0.25
0.20
0.15
0.10
0.05
0.00
Date
Median
Level 1 Trigger
SH5
0.3
Light Attenuation Coefficient (m‐1)
0.25
0.2
0.15
0.1
0.05
0
Date
Median
Figure B.10
48
Level 1 Trigger
Rolling 14-day median LAC at seagrass health monitoring sites located adjacent to
the Deep Water Channel, within the predicted zone of potential influence (SH2 – top;
SH5 – bottom). LAC thresholds pertaining to Level 1 management triggers are also
presented.
Oceanica: Fremantle Ports: Inner Harbour Deepening Project, Seagrass Health Monitoring Report – Post Dredge
Deep Water Channel – Zone of Potential Effect
SH46 Loggers Missing
(N.B. Rolling 5-day median LAC from 9th to 13th September 2010 = 0.065 m-1;
Rolling 5-day median LAC from 8th to 12th October 2010 = 0.049 m-1;
Rolling 10-day median LAC from 25th October to 3rd November 2010= 0.042 m-1; and
Rolling 14-day median LAC Triggers for Level 1 & 2 Management = 0.056 m-1 & 0.072 m-1)
SH47
0.30
Light Attenuation Coefficient (m‐1)
0.25
0.20
0.15
0.10
0.05
0.00
Median
Figure B.11
Level 1 Trigger
Date
Level 2 Trigger
Level 3 Trigger
Level 4 Trigger
Rolling 14-day median LAC at seagrass health monitoring sites located adjacent to
the Deep Water Channel, within the predicted zone of potential effect (SH46 - top;
SH47 – bottom). LAC thresholds pertaining to Level 1, 2, 3 & 4 management triggers
are also presented.
Oceanica: Fremantle Ports: Inner Harbour Deepening Project, Seagrass Health Monitoring Report – Post Dredge
49
Offshore – Reference Sites
SH32
0.3
Light Attenuation Coefficient (m‐1)
0.25
0.2
0.15
0.1
0.05
0
Date
Median
SH33
0.3
Light Attenuation Coefficient (m‐1)
0.25
0.2
0.15
0.1
0.05
0
Date
Median
Figure B.12(a) Rolling 14-day median LAC at offshore reference seagrass health monitoring sites,
outside the predicted zone of potential influence (SH32 – top; SH33 – bottom).
Management triggers are not applicable to reference sites.
50
Oceanica: Fremantle Ports: Inner Harbour Deepening Project, Seagrass Health Monitoring Report – Post Dredge
SH34
0.3
Light Attenuation Coefficient (m‐1)
0.25
0.2
0.15
0.1
0.05
0
Median
Date
SH35
0.30
Light Attenuation Coefficient (m‐1)
0.25
0.20
0.15
0.10
0.05
0.00
Median
Date
Figure B.12(b) Rolling 14-day median LAC at offshore reference seagrass health monitoring sites,
outside the predicted zone of potential influence (SH34 – top; SH35 – bottom).
Management triggers are not applicable to reference sites.
Oceanica: Fremantle Ports: Inner Harbour Deepening Project, Seagrass Health Monitoring Report – Post Dredge
51
Appendix C
Shoot density data
Oceanica: Fremantle Ports: Inner Harbour Deepening Project, Seagrass Health Monitoring Report – Post Dredge
53
Location Zone Site # shoots per 0.04 m2 # shoots per 1 m2 mean per m2 SE SD Deep Water Channel Area Dec‐09 ZOE
SH46A 34
26
23
22
22
26
22
17
14
34
12
26
16
26
850
650
575
550
550
650
550
425
350
850
300
650
400
650
571
44
165
Dec‐10
ZOE
SH46A
27
21
26
31
14
21
25
22
26
24
33
19
19
36
675
525
650
775
350
525
625
550
650
600
825
475
475
900
614
40
149
Dec‐09
ZOE
SH47
10
21
16
12
10
18
23
11
13
12
16
8
11
11
250
525
400
300
250
450
575
275
325
300
400
200
275
275
343
30
111
Dec‐10
ZOE
SH47
27
26
29
29
20
27
24
30
32
24
19
26
36
30
675
650
725
725
500
675
600
750
800
600
475
650
900
750
677
30
113
Oceanica: Fremantle Ports: Inner Harbour Deepening Project, Seagrass Health Monitoring Report – Post Dredge
Dec‐09
ZOI
SH02
21
10
17
10
24
23
17
15
22
18
26
11
19
17
525
250
425
250
600
575
425
375
550
450
650
275
475
425
446
34
128
55
Dec‐10
ZOI
SH02
38
32
21
35
37
38
43
46
18
31
37
35
27
30
950
800
525
875
925
950
1075
1150
450
775
925
875
675
750
836
52
193
Dec‐09
ZOI
SH05
21
28
10
19
19
18
14
26
37
55
39
27
27
22
525
700
250
475
475
450
350
650
925
1375
975
675
675
550
646
77
289
Dec‐10 ZOI SH05 38 31 19 26 19 32 29 24 31 44 36 34 41 35 950 775 475 650 475 800 725 600 775 1100 900 850 1025 875 784 50 188 Location Zone Site # shoots per 0.04 m2 # shoots per 1 m2 mean per m2 SE SD 56
Dec‐09
ZOE
SH49B
Dec‐10
ZOE
SH49B
34
19
18
25
29
20
22
17
15
13
14
19
10
12
850
475
450
625
725
500
550
425
375
325
350
475
250
300
477
45
167
Dec‐09
ZOE
SH50B
Offshore Disposal Area Dec‐10
Dec‐09 ZOE
ZOI SH50B
SH51 32
10 46
15 28
13 39
11 33
10 32
14 38
10 30
8 20
13 21
9 14
11 25
11 23
12 29
12 800
250 1150
375 700
325 975
275 825
250 800
350 950
250 750
200 500
325 525
225 350
275 625
275 575
300 725
300 732
284 56
13 211
49 Dec‐10
ZOI
SH51
24
30
36
22
32
31
18
28
24
31
20
23
21
13
600
750
900
550
800
775
450
700
600
775
500
575
525
325
630
42
159
Oceanica: Fremantle Ports: Inner Harbour Deepening Project, Seagrass Health Monitoring Report – Post Dredge
Dec‐09
ZOI
SH7
15
23
37
32
22
23
20
14
12
18
13
14
16
20
375
575
925
800
550
575
500
350
300
450
325
350
400
500
498
48
181
Dec‐10
ZOI
SH7
23
40
41
32
36
24
18
18
36
13
24
26
19
28
575
1000
1025
800
900
600
450
450
900
325
600
650
475
700
675
59
220
Location Date Zone Site # shoots per 0.04 m2 # shoots per 1 m2 mean per m2 SE SD Dec‐09
REF
SH32
12
12
19
11
21
16
28
14
16
5
10
12
18
10
300
300
475
275
525
400
700
350
400
125
250
300
450
250
364.3
38.1
142.7
Dec‐10
REF
SH32
12
13
41
5
21
23
19
34
18
19
23
14
21
15
300
325
1025
125
525
575
475
850
450
475
575
350
525
375
496
60
226
Dec‐09
REF
SH33
8
11
6
8
9
7
5
15
10
6
16
18
14
10
200
275
150
200
225
175
125
375
250
150
400
450
350
250
255
27
102
Offshore Reference Sites
Dec‐10
Dec‐09
REF
REF SH33
SH34 9
27 15
21 22
29 12
22 22
21 15
24 9
28 27
15 18
17 23
18 24
16 21
14 24
33 21
14 225
675 375
525 550
725 300
550 550
525 375
600 225
700 675
375 450
425 575
450 600
400 525
350 600
825 525
350 468
534 39
41 145
153 Oceanica: Fremantle Ports: Inner Harbour Deepening Project, Seagrass Health Monitoring Report – Post Dredge
Dec‐10
REF
SH34
29
20
27
20
25
21
22
26
25
21
24
37
31
22
725
500
675
500
625
525
550
650
625
525
600
925
775
550
625
32
120
57
Dec‐09
REF
SH35
20
11
30
26
18
18
23
12
12
17
20
18
23
17
500
275
750
650
450
450
575
300
300
425
500
450
575
425
473
36
135
Dec‐10
REF
SH35
29
24
27
29
20
13
34
18
32
29
28
23
24
21
725
600
675
725
500
325
850
450
800
725
700
575
600
525
627
38
144
Location Zone Site # shoots per 0.04 m2 # shoots per 1 m2 mean per m2 SE SD 58
Dec‐09
REF
SH30
17
24
27
46
22
37
50
12
11
9
23
21
12
17
425
600
675
1150
550
925
1250
300
275
225
575
525
300
425
586
85
320
Dec‐10 REF SH30 21 32 35 27 37 30 25 7
38 7
43 41 53 37 525 800 875 675 925 750 625 175 950 175 1075 1025 1325 925 773 86 323 Dec‐09 REF SH38_A 24 27 13 18 22 18 26 17 31 21 25 23 18 28 600 675 325 450 550 450 650 425 775 525 625 575 450 700 555 33 125 Dec‐10
REF
SH38
47
19
28
28
32
10
26
11
17
18
11
12
21
8
1175
475
700
700
800
250
650
275
425
450
275
300
525
200
514
72
270
Dec‐09
ZOI
SH10_A
5
30
19
22
27
28
18
18
25
21
28
20
16
20
125
750
475
550
675
700
450
450
625
525
700
500
400
500
530
43
161
Dec‐10
ZOI
SH10
21
8
33
19
22
23
23
19
12
11
9
30
6
32
525
200
825
475
550
575
575
475
300
275
225
750
150
800
479
60
223
Dec‐09
ZOI
SH11_A
18
15
15
11
14
22
28
17
20
13
24
16
15
12
450
375
375
275
350
550
700
425
500
325
600
400
375
300
429
32
121
Rous Head Area Dec‐10
Dec‐09 ZOI
ZOE SH11
SH12_A 14
15 13
9 9
18 16
15 21
15 16
14 14
27 23
15 27
13 29
8 22
5 13
9 26
12 18
13 350
375 325
225 225
450 400
375 525
375 400
350 350
675 575
375 675
325 725
200 550
125 325
225 650
300 450
325 466
336 41
35 152
131 Dec‐10
ZOE
SH12
18
17
17
16
15
9
16
7
11
10
17
20
18
13
450
425
425
400
375
225
400
175
275
250
425
500
450
325
364
26
98
Oceanica: Fremantle Ports: Inner Harbour Deepening Project, Seagrass Health Monitoring Report – Post Dredge
Dec‐09
ZOE
SH36_A
8
15
25
18
14
15
13
15
20
18
18
16
17
20
200
375
625
450
350
375
325
375
500
450
450
400
425
500
414
26
98
Dec‐10
ZOE
SH36
19
8
3
3
11
12
11
19
8
3
3
11
12
11
475
200
75
75
275
300
275
475
200
75
75
275
300
275
239
36
134
Dec‐09
ZOL
SM46_A
17
23
20
37
19
24
21
18
16
23
9
19
27
18
425
575
500
925
475
600
525
450
400
575
225
475
675
450
520
42
158
Dec‐10
ZOL
SM46A
22
21
32
27
31
36
27
19
28
9
5
19
18
26
550
525
800
675
775
900
675
475
700
225
125
475
450
650
571
57
215
Dec‐09 ZOL
SM52_A 29
10
15
14
30
17
7
12
17
16
16
19
28
13
725
250
375
350
750
425
175
300
425
400
400
475
700
325
434
47
176
Dec‐10 ZOL SM52 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Location Zone Site # shoots per 0.04 m2 # shoots per 1 m2 mean per m2 SE SD Dec‐09
ZOE
SH18
40
43
31
39
42
31
33
25
26
28
30
30
33
25
1000
1075
775
975
1050
775
825
625
650
700
750
750
825
625
814
41
154
Dec‐10 ZOE SH18 17 19 15 20 34 47 46 12 22 26 25 29 29 29 425 475 375 500 850 1175 1150 300 550 650 625 725 725 725 661 70 262 Dec‐09
ZOE
SH41
29
27
38
19
28
26
41
37
23
17
36
34
30
24
725
675
950
475
700
650
1025
925
575
425
900
850
750
600
730
48
181
Dec‐10
ZOE
SH41
24
34
24
16
30
42
33
15
25
18
38
23
51
38
600
850
600
400
750
1050
825
375
625
450
950
575
1275
950
734
70
263
Dec‐09
ZOI
SH43
52
47
29
30
38
11
36
25
17
30
26
20
19
33
1300
1175
725
750
950
275
900
625
425
750
650
500
475
825
738
76
283
Entrance Channel Area Dec‐10
Dec‐09
ZOI
ZOI
SH43
WP1
20
34 19
29 6
49 34
29 43
40 28
20 44
43 48
19 37
29 39
34 34
24 56
16 52
11 53
33 500
850
475
725
150
1225
850
725
1075
1000
700
500
1100
1075
1200
475
925
725
975
850
850
600
1400
400
1300
275
1325
825
916
732
97
71 362
267
Oceanica: Fremantle Ports: Inner Harbour Deepening Project, Seagrass Health Monitoring Report – Post Dredge
Dec‐10
ZOI
WP1
53
30
45
52
49
37
41
40
39
44
32
29
38
32
1325
750
1125
1300
1225
925
1025
1000
975
1100
800
725
950
800
1002
52
196
59
Dec‐09
REF
SH44
27
15
14
18
26
15
23
26
24
27
20
21
27
23
675
375
350
450
650
375
575
650
600
675
500
525
675
575
546
32
119
Dec‐10
REF
SH44
10
28
19
30
16
41
51
34
31
29
32
37
13
15
250
700
475
750
400
1025
1275
850
775
725
800
925
325
375
689
78
293
Dec‐09
REF
SH45
49
27
29
31
27
35
64
27
51
65
64
52
62
33
1225
675
725
775
675
875
1600
675
1275
1625
1600
1300
1550
825
1100
104
390
Dec‐10 REF SH45 27 39 38 42 32 37 17 22 24 25 28 38 39 30 675 975 950 1050 800 925 425 550 600 625 700 950 975 750 782 51 193