Public Environment Report Tarkine Forest Drive ... - Transport

More documents

Recommendations

Info

There are no known pests or diseases that impact on this species. Neither thepreferred grassy habitat nor the species is susceptible to Phytophthora cinnamomi. Fireoutbreaks are not likely to adversely affect this species as the habitat is unlikely to beflammable during the spring flowering period. Orchids are adapted to fire and typicallybenefit from periodic burns. Fire is used as a tool for habitat management (ThreatenedSpecies Section 2010).SurveyTwo populations are known from the vicinity at Gardiner Pt (Arthur River) and PossumBanks (south of Temma).The roadsides along Segments A & B between the two known populations were targetedfor survey (as outlined in section 4.9.2).The surveys undertaken during flowering season in 2009 failed to identify any plantswithin the road corridor (NBES 2011).4.10.4 Northern Leek-orchid (Prasophyllum secutum)AbundanceThe estimated total population of northern leek-orchid is less than 500 plants. Thereare thirteen documented populations, many of which have not been recorded in recentyears due to the highly ephemeral habitat of the species. Most populations support 10-30 plants with two larger populations on the north coast (Threatened Species Section2008).Distribution, ecology and habitat preferenceNorthern leek-orchid is endemic to Tasmania and is confined to the north andnorthwest coasts with outliers on Flinders Island and the west coast (Figure 4.7). Thearea of occupancy is 10 ha (Threatened Species Section 2008).The species is known from among shrubs in the swales of stabilised dunes (ThreatenedSpecies Section 2008).Habitat occurs in the vicinity of Segment B. A single observation record is shown inAppendix A Map 4.The species potentially flowers from early October to early December (Wapstra et al.2008) but only following fire. Consequently many populations remain unobserved formany years.Known threatsThe key threats to northern leek orchard are conversion of suitable habitat toagricultural uses. The species may have had a widespread distribution in the coastalheathlands of the northern West Coast of the State. However, most of the suitablehabitat in the area has been converted to agricultural use. The difficulty in identifyingpopulations outside of the season post fire means many populations may have beendestroyed, and continue to be threatened by clearance (Threatened Species Section2008).Other localised threats to some populations include damage from 4WD, sand digging,rubbish dumping, cattle grazing and enrichment (Threatened Species Section 2008).Within the Arthur–Pieman Conservation Area, cattle agistment potentially poses athreat.Ref: HB09080H001 PER Tarkine Drive 33P Rev 00/DL/CL/jw 56
Figure 4.7 - Distribution of northern leek orchid (Source: Natural Values Atlas March 2012)Ref: HB09080H001 PER Tarkine Drive 33P Rev 00/DL/CL/jw 57
Page 1:
Public Environment ReportTarkine Fo
Page 4:
Figure 4.8 - Distribution of pretty
Page 7 and 8:
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
Page 23 and 24: 2.1 Construction programming approa
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
Page 45 and 46: All potential habitats were inspect
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
Page 53 and 54: Eight EPBC Act listed threatened fl
Page 55 and 56: Figure 4.2 - Distribution of Arthur
Page 57 and 58: Figure 4.4 - Threatened flora from
Page 59 and 60: Figure 4.5 - Distribution of large
Page 61: The potential for stochastic risk,
Page 65 and 66: The species potentially flowers fro
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
show all

Public Environment Report Tarkine Forest Drive ... - Transport

Create successful ePaper yourself

Delete template?

Save as template?