2015-11-10 - P&O Agenda - Item 7, Attach 2 - Assessment of Oyster Recruitment

List of Figures

Figure 1.  Location of sites and total number of Planostrea pestigris oyster recruits on
           settlement tiles                                                                 4
Figure 2. Vertical and horizontal settlement tile array in (a) Lake Doonella, and (b)
           Weyba Creek                                                                      5
Figure 3. Collecting the intertidal settlement tile array from Site G1-I at Goat Island,
           in May 2015                                                                      6
Figure 4 Sydney rock oysters and predatory mulberry whelks on an intertidal shore
           at North Stradbroke Island                                                       8
Figure 5. Average number (± SE) of oyster recruits (P. pestigris) on horizontal and
           vertical surfaces deployed at intertidal sites                                   9
Figure 6. Recruitment of oysters on intertidal tiles from (a) Site T1-I- and (b) Site
           WC3-I, after 5 months                                                           10
Figure 7. Size-frequency distribution of oysters (P. pestigris) deployed at intertidal
           sites                                                                           10
Figure 8. Average number (± SE) of oyster recruits (P. pestigris) on horizontal and
           vertical surfaces deployed at subtidal sites                                    11
Figure 9. Recruitment of oysters on subtidal tiles from (a) Site WC2 and (b) Site LW2
           after 5 months                                                                  12
Figure 10. Estimate of linear growth rate using average size of the oyster (P.
           pestigris) after 2, 3 and 5 months deployment                                   12
Figure 11. Recruitment of oysters onto (a) cement blocks, and (b) under settlement
           tiles on plastic support structures                                             13
Figure 12. Total oyster recruits (P. pestigris) on (a) cement blocks, and (b) plastic
           rods after 5 months                                                             14
Figure 13. Sediment smothering upper horizontal surface of settlement tiles after 2
           months                                                                          15
Figure 14. Growth of S. glomerata on a jetty in the lower Noosa Estuary                    17


List of Tables

Table 1.    Treatments deployed at each site                                                6




Restoration of Noosa Estuary: An Assessment of Oyster Recruitment