Appendix H - Biodiversity Code

1.1         Summary of Environmental Values

Environmental values attributed to the site include:

Amenity:
   • Scenic amenity – green space, waterway, riparian vegetation, canopy trees, native wildlife spotting, etc.
   • Adjacent Parkland – green space, corridor for fauna movements, watercourse.
   • Green buffer between residential uses and to road.

Water:
   •        Tributary to Wooroi Creek on adjacent park land.
   •        Standing water associated with ‘dam’ in Lomandra Park and wetland features of the site.
   •        Water quality of standing water appeared good – water was clear, no algal growth, presence of macroinvertebrates.
   •        Overland flow paths / rainwater tank overflows through retained vegetation and through the park to the creek.
   •        Stormwater outlets in various locations on site.

Fauna:
   • A total of two mammal species, twenty bird species, five reptile species, one amphibian species and one invertebrate
       species (see Attachment A), were found during the survey.
   • Fish habitat - DAF mapping shows tributary to be a Low (Green) Risk waterway.
   • Mature Eucalypt trees in the survey area are considered “habitat trees” and provide roosting, perching and foraging
       resources.
   • Primary and secondary Koala habitat trees present and 20 records of Koala within one kilometre of the survey area,
       however no signs of Koala was identified on site. The area is considered to provide suboptimal Koala habitat –
       koalas may potentially traverse the survey area.
   • Leaf litter and wood debris present provides some habitat for small reptiles and litter foraging invertebrates.
   • Listed invertebrate species Endangered Swamp crayfish (Tenuibranchiurus glypticus) (as listed in NC Act) was
       identified on site in Melaleuca wetland.
   • Around drainage lines and stormwater outlets ponded water may provide fish-free breeding habitat for EVNT listed
       frog species.
   • Ponded water also supported the surface activity of the Endangered Swamp Crayfish (Tenuibranchiurus glypticus)
       observed on site.
   • Presence of weeds and ornamentals in the retained vegetation impacts on the quality of fauna habitat values.

Flora:
    •       A total of 70 native plant species and 37 non-native species were recorded during the survey period (see
            Attachment A).
        •   The western edges of retained vegetation is subject to disturbance including dumping of garden waste, nutrient
            runoff and weed encroachment, with 50% native, 50% non-native species in the mid and lower strata.
        •   The eastern edge of the retained vegetation is relatively intact retaining a high degree of floristic diversity and
            integrity across all strata, with very few weed species encroaching into the wet sedgeland - exhibits the characteristic
            structure and canopy composition of the remnant vegetation community RE 12.3.5 (‘Least Concern’ Melaleuca
            quinquenervia open forest on coastal alluvium).
        •   No EVNT listed flora species were recorded at the Carramar site.

Soil:
        •   Elevation slopes gently to the south and east, falling from approximately 15 metres to 7 metres above sea level (asl.)
        •   Geology on site is coastal alluvium associated with recent Quaternary alluvial systems (Land Zone 3).
        •   The site is generally stable with close to 90% cover with grass, mulch and native vegetation.
        •   Some very minor soil erosion along drains.




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