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11th Post-Translocation Monitoring Report (June 2023) Formal
Submission Veolia
Environmental Services Hong Kong Ltd. |
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Document Control
Document Information
Project Title |
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Document Title |
11th Post-Translocation Monitoring Report (June 2023) |
Fugro Project No. |
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Fugro Document No. |
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Issue Number |
01 |
Issue Status |
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Fugro Legal Entity |
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Issuing Office Address |
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Client Information
Client |
Veolia Environmental Services Hong Kong
Ltd. |
Client Address |
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Client Contact |
Mr. William Wan |
Client Document No. |
NENTX-FUG-RP-E-EM-014-I01 |
Document History
Issue |
Date |
Status |
Comments on Content |
Prepared By |
Checked By |
Approved By |
01 |
8 June 2023 |
Draft |
Awaiting Client’s Comments |
AY |
FN |
CY |
02 |
8 June 2023 |
Formal Submission |
For ET’s certification and IEC’s
verification |
AY |
FN |
CY |
Project Team
Initials |
Name |
Role |
CY |
Colin Yung |
Project Manager |
FN |
Fenelyn Nabuab |
Ecologist |
SMR |
Sheila Marie Rabi |
GIS Specialist/ Ecologist |
AY |
Andy Yuen |
Assistant Environmental Consultant |
IEC |
Meinhardt (Hong Kong) Limited |
Independent Environmental Checker |
ET |
Aurecon (Hong Kong) Limited |
Environmental Team |
Contents
Appendices
Appendix A Monitoring
Area
Appendix B Special
Permit under Cap. 170
Appendix C Fieldwork
Datasheet
List of Plates in the Main Text
Photo 2.1:
Section of the monitoring area with low gradient and low water flow
Photo 2.2: Hand netting
at a potential habitat (vegetation) along the watercourse
Photo 2.3:
Surveyor kick-netting the substrate and checking the net’s contents
Photo 3.1: Site
photos of the monitoring area
Photo 3.2: Site
photos of the monitoring area further downstream
§ Section 2 details the methodology of the mark-recapture activity;
§ Section 3 presents the survey results of mark-recapture activity;
§ Section 4 details the post-translocation monitoring schedule; and
§ Section 5 presents the summary and conclusion.
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Photo 2.1: Section of the monitoring area with low gradient and low water flow |
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Photo 2.2: Hand netting at a potential habitat (vegetation) along the watercourse |
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Photo 2.3: Surveyor kick-netting the substrate and checking the net’s contents |
Direct observation (see Photo 2.4) to search for S. zanklon in their potential hiding spaces was also conducted.
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Photo 2.4: Surveyor searching for S. zanklon on potential hiding space (under vegetation and rocks) along the watercourse |
All captured S. zanklon individuals would be marked prior to releasing them back to the monitoring area. The marker would be an epoxy-resin based paint (Jotamastic Wintergrade) which contains a metallic component and cures in contact with water. Earlier laboratory and field trials had established that crab survival and behaviour was unaffected by paint marking on the carapace and that the marks persisted in field conditions (Eaton et. al., 2001). Recaptures, if any, would be re-marked with black numerals to indicate the month of capture.
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Photo 3.1: Site photos the monitoring area (vegetation) |
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Photo 3.2: Site photos the monitoring area further down stream |
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Eaton, D.R., J.T. Addison, S.P. Milligan, J.
Brown and L.J. Fernand. 2001. Larvae surveys of edible crab (Cancer pagurus) off the east coast of
England: implications for stock structure and management. ICES CM 2001/J:14.
10pp.
ERM. 2022. Aquatic Fauna Survey Findings included
in previous Translocation Proposal (version 4.0).
Hong Kong Observatory (HKO). 2022. https://www.hko.gov.hk/en/wxinfo/climat/warndb/warndb1.shtml?opt=1&sgnl=1.or.higher&start_ym=202208&end_ym=202208&submit=Submit+Query
Stanton, D.J. and Leven, M.R. (2016)
“Distribution, habitat utilisation and conservation status of the freshwater
crab, Somanniathelphusa Zanklon Ng & Dudgeon, 1992 (crustacea:
Brachyura: Gecarcinucidae) endemic to Hong Kong,” Journal of Threatened Taxa,
8(3), p. 8564.