Attachment 7C - Flora and Fauna Survey Assessment_Noosa Landfill - Revision 3

                                                                                      Native Foresters



      All adjacent vegetation and soil may be affected by the groundwater drainage system
       outflow. Areas that provide the receiving environment for groundwater flows
       (RE12.5.3/12.5.4/12.3.5) may become wetter over time with resulting impacts on
       community structure i.e. the understorey may become more dense (shrubs and
       sedges) and composition i.e. more Melaleucas. As the canopy species which define
       the ecosystem type are likely to persist, the above-mentioned impacts would not
       constitute effective clearing under the Vegetation Management Act 1999.

Surface water Changes Impacts:

      Moderate impacts for RE12.5.31 and 12.5.42 as detailed below:
       o Localised waterlogging favouring wet sclerophyll/Melaleuca species around
          stormwater drain areas and discharge outlets.
       o Shift in vegetation community composition towards species adapted to wetter
          conditions, such as Melaleuca quinquenervia and sedges, reducing recruitment
          of dry sclerophyll species, predominantly in the understorey. As the canopy
          species which define the ecosystem type are likely to persist, this shift to a
          wetter understorey would not constitute effective clearing under the Vegetation
          Management Act 1999.
       o Increased growth of ground cover species assisted by increased soil moisture,
          with resultant increases in fire fuel loads and more intense fire events.
       o Introduction of nutrients and propagules of invasive plant species into typically
          nutrient poor soils, leading to an increase in invasive plant species.

      Moderate impacts for RE12.3.13/12.3.5 as detailed below:
       o Increased/intermittent surface water/ stormwater inputs to the near east of the
          landfill and the closed heathland / wetland Land Zone 3 ecosystems that occur
          there, are likely to lead to:
            Changes in water quality east of the landfill (i.e. increase in pH, increase in
              nutrient concentrations);
            Changes to soil chemistry (i.e. altering soil pH levels to a less acidic state);
            Changes in vegetation community structure favouring denser understorey
              of sedges and ferns.
            Intensification and further spread of existing weed outbreaks.




1 The impacts from increased/intermittent surface flows to the Endangered Scribbly gum woodland

(RE 12.5.3) are associated with intermittent increases in clean water flows from Catchment areas
C2C (0.53ha) and C2D (4.84ha) and a proportion of dirty water flows from Catchment area C2A
(2.98ha), C2B (5.27ha) and C3B (1.08ha) that may spill directly into the Endangered ecosystems
during high flow events and/or dissipate through the sandy soils. Refer to Appendix C – Current and
Proposed Surface Water Flows.

2 The impacts from increased/intermittent surface flows to the Least concern Eucalypt woodland

(RE12.5.4) are associated with dirty water flows from Catchment areas C3A (0.72ha) and a
proportion of dirty water flows from Catchment area C1 (4.66ha) that may spill over from the dirty
water cutoff drain into Catchment area C3A or from overland flow during high flow events. Refer to
Appendix C – Current and Proposed Surface Water Flows.



Noosa Landfill & Resource Recovery Centre – Fauna and Flora Assessment – Revision 3
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