Public Environment Report Tarkine Forest Drive ... - Transport

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There have been no records of this species from the section of road impacted by theproposed action. With such a conspicuous flower it is unlikely to have been overlooked,given the intensity of surveys in this area during the peak flowering period (NBES2011).4.10.3 Leafy Greenhood (Pterostylis cucullata subsp. cucullata)AbundanceThe estimated total population of leafy greenhood in Tasmania is 10,000 to 11,000plants (Threatened Species Section 2010a). The Australian population is estimated toinclude 50,000 Duncan (2010). There are sixteen subpopulations in Tasmania. Locally,there are two populations at Gardiner Point near Arthur River (23 plants) and PossumBanks south of Temma (2000-3000) (Threatened Species Section 2010a).Distribution, ecology and habitat preferenceIn Tasmania this robust terrestrial orchid species is known only from the coast from thefar north west including offshore islands and from one population on Flinders Island oncalcarenite soils (Figure 4.6). The habitat in northwest Tasmania is tea-tree orpaperbark scrub on stabilised dunes in well drained locations. On Flinders Island it is onthe edge of a vegetation change between Flinders island scrub and tussock grassland.The niche is sheltered south to south east facing sites protected from prevailing windsand in seasonally damp soils. It has a linear range of 350 km and an area of occupancyof 80 ha (Threatened Species Section 2010a).Habitat occurs in the vicinity of Segment A. There are no observation records shown inAppendix A, although there is a record at Gardiner Point just off Map 1.The potential flowering period for this species is October to November with a peak inlate October to early November (Wapstra et al. 2010).Known threatsThe key threats to leafy greenhood include land clearance, cattle grazing andinappropriate fire regimes. In summary, the threats to the species include thefollowing (Threatened Species Section 2010b):Habitat loss (dune destabilisation, marram grass planting and spread, agriculturaland urban development)Cattle grazing (trampling, nutrient enrichment)Inappropriate fire regimes (reduced burning could lead to scrub invasion modifyinghabitat)Predation (browsing by garden snails)Weeds (pasture grasses)Climate change (unknown influence, possible changes to rainfall)Stochastic risks.No threats to this species will be derived from this action. No habitat is in the vicinity.No changes to cattle grazing are anticipated. No expectation for reduction in fireregime resulting from this action. No likelihood of garden snails being introduced tosites, not least because the works are not anticipated to occur in the vicinity of knownhabitat and no plant material is proposed to be transported. Likewise, there is nosignificant likelihood of weeds being introduced to known habitat as the action isspatially removed (>1 km) from habitat. The action will have no impact on climatechange.Ref: HB09080H001 PER Tarkine Drive 33P Rev 00/DL/CL/jw 54
The potential for stochastic risk, i.e. one off impact associated with construction orother changes derived from the action, is highly remote because of the distancebetween known habitat and the proposed action.Figure 4.6 - Distribution of leafy greenhood (Source: Natural Values Atlas March 2012)Ref: HB09080H001 PER Tarkine Drive 33P Rev 00/DL/CL/jw 55
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Public Environment ReportTarkine Fo
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Figure 4.8 - Distribution of pretty
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1. General informationFor convenien
Page 9 and 10: 1.5 Background to the development o
Page 11 and 12: Extended visitor stays - most visit
Page 13 and 14: Tarkine tourism development strateg
Page 15 and 16: For example:The Tarkine has been id
Page 17 and 18: Current mining leasesTasmanian Adva
Page 19 and 20: The objectives of conservation area
Page 21 and 22: 2. Description of the actionIn rela
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Page 25 and 26: IDFGHIJKLSectionDescriptionBlackwat
Page 27 and 28: 2.3.1 Construction methodWorker ind
Page 29 and 30: Equipment and machineryThe specific
Page 31 and 32: Figure 2.3 - Proposed bridge replac
Page 33 and 34: Precast concrete piers and abutment
Page 35 and 36: 2.5 Tourism infrastructure worksThe
Page 37 and 38: Table 3.1 - Overview of potential i
Page 39 and 40: 4.1 AltitudeThe Tarkine Forest Driv
Page 41 and 42: 722131 TrowuttaThis land system has
Page 43 and 44: 4.8 Other important or unique value
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Page 47 and 48: Eagle nest habitatForestry Tasmania
Page 49 and 50: Table 4.3 - Summary of the survey r
Page 51 and 52: PERReferenceNo furtheranalysis inPE
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Page 55 and 56: Figure 4.2 - Distribution of Arthur
Page 57 and 58: Figure 4.4 - Threatened flora from
Page 59: Figure 4.5 - Distribution of large
Page 63 and 64: Figure 4.7 - Distribution of northe
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Page 67 and 68: Figure 4.9 - Distribution of short
Page 69 and 70: Figure 4.10 - Distribution of weste
Page 71 and 72: 4.10.8 Windswept Spider Orchid (Cal
Page 73: Known threatsThe key threat to wind
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Public Environment Report Tarkine Forest Drive ... - Transport

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