Flora survey for Hamersley Drive recreation - Environmental ...

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FRNP Improvement Project: Culham Inlet to Hamersley Inlet GF Craig– July 2010 • the small mountains of the Barren Ranges group supporting Barren Ranges thicket – the most consistent species being Eucalyptus preissiana and Dryandra quercifolia; • small adjacent portions of coastal plain on sandy lateritic soil supports Eucalyptus pleurocarpa mallee-heath; • river trenches with mallee, including Eucalyptus redunca, E. uncinata and E. conglobata; • areas of coastal drift sand with coastal scrub – Eucalyptus angulosa and Melaleuca pentagona being typical. Threatened Ecological Communities The search of DEC’s Threatened Ecological Communities database found no known occurrences of threatened ecological communities in the study area (M. Hunter, pers.comm.). However, there are occurrences of the following ecological communities within approximately 5 km of the survey area: • The ‘Vulnerable’ threatened ecological community – ‘Thumb Peak - Mid-Mount Barren - Woolburnup Hill (Central Barren Ranges) Eucalyptus acies mallee heath' ; • The ‘Priority 1’ ecological community – ‘Very open mallee over Melaleuca sp. Kundip (GF Craig 6020) dense heath’. Declared Rare and Priority Flora The WAHERB and DEFL searches found 40 species in the vicinity of the survey area, including eight Declared Rare flora. After ovelaying their locations on an orthophoto, this number was reduced to 22 species being recorded in the survey area (Appendix 1.2). Six Declared Rare flora were located on or near East Mt Barren (Table 2). DEC updated the conservation codes in March 2010 (Smith 2010), one species which was widespread in survey area, Acacia moirii subsp. dasycarpa was deleted from the list. Another known from the general area Lissanthe pleurandroides was also deleted. Table 2: Declared Rare flora near Hamersley Drive Species Name 8 DEC Conservation Code EPBC Act Adenanthos ellipticus R Vulnerable Eucalyptus burdettiana R Endangered Eucalyptus coronata R Vulnerable Kunzea similis subsp. similis R - Stylidium galioides R Vulnerable Verticordia pityrhops R Endangered
FRNP Improvement Project: Culham Inlet to Hamersley Inlet GF Craig– July 2010 4. Field Investigation Vegetation The survey area lies in the Barren Ranges system of Beard (1973, 1976), except for the coastal dunes which are more typical of the Fanny’s Cove system. Two vegetation types are characteristic of the Qualup system. Appendix 3 provides eight maps at 1:10 000 scale of the project area and species lists for each of the 13 vegetation units. Most of the vegetation comprises four units of ‘Barren Ranges thicket’ (Table 3) – one characterized by Adenanthos venosus [Adven] on shallow soils over outcropping quartzite at the base of East Mt Barren, two on predominantly on lateritised soils with Dryandra quercifolia predominant [Dque], but in areas including large patches of Eucalyptus preissiana [Epre/Dque]. Melaleuca papillosa [Mpap] grows on valley slopes where schist is exposed. Small winter-wet depressions support low heath characterized by Melaleuca pulchella, but these were too small (
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Flora survey for Hamersley Drive recreation - Environmental ...

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