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Appendix I: Interview with Hong Kong’s Agriculture, Fisheries, and Conservation Department on Hong Kong's Tyre Reef Project

Representative: Eric Yau AFCD Employee

  • Q.

    When was the tyre reef project started?

  • A.

    The tyre reef projects was started in 1998.

  • Q.

    What other materials are used besides tyres?

  • A.

    Other materials include redundant steel and wooden vessels,

pre-fabricated concrete modules, redundant marine concrete structures, biofilters (pre-fabricated fibre-glass sheets of high surface area ratio to volume) and natural quarry rocks.

  • Q.

    What have been the results of the project so far?

  • A.

    The project shows that our ARs are effective in enhancing marine

resources in terms of fish and invertebrate communities.

Q. If other materials are used, what materials seem to be the most effective? In comparison to the tyres?

  • A.

    Biofilters and natural quarry rock piles.

  • Q.

    How many tyres are used in the tyre reefs?

  • A.

    A total of 37,500 has been used in the making of 400 tyre reef

blocks.

  • Q.

    How are the tyres bound, and in what geometry?

  • A.

    The tyres are bound together on a steel-based frame with nylon straps

and buckles which are inert to sea water and UV lights. The completed tyre block will form a pyramidal shape (similar to a Toblerone chocolate bar).

  • Q.

    How do you check the performance of the reefs?

  • A.

    We check the ARs by conducting quantitative underwater fish surveys

as well as qualitative surveys of the reefs.

  • Q.

    What are your future plans involving the use of tyre reefs?

  • A.

    As tyre reefs do not show to the best AR materials (in Hong Kong

context), we have no future plans involving the use them.

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