Flora, Vegetation and Fauna Assessment – M291 Ioppolo Road, Chittering
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APPENDIX D Flora, vegetation and fauna assessment – M291 Ioppolo Road, Chittering This page has been left intentionally blank. Flora, Vegetation and Fauna Assessment Lot M2091 Ioppolo Road, Chittering DOC NO / NLWA‐00‐EN‐RP‐0009 REV / 0 DATE / 15 April 2015 EXECUTIVE SUMMARY Main Roads Western Australia (MRWA) commissioned Coffey Environments Australia Pty Ltd (Coffey) to complete a Level 1 flora, vegetation and fauna and Black Cockatoo assessment, at Lot M2019 Ioppolo Road, Chittering (the study area), located approximately 50 kilometres (km) north of Perth in the Swan Coastal Plain bioregion of Western Australia. The purpose of the study was to undertake an assessment of the ecological values of the study area. The outcome of the assessment will be used to determine the suitability of the land as an offset for values to be impacted by the NorthLink WA project. The study area is 986 hectare (ha) and is adjacent to a C Class Nature Reserve to the west, which is 163 ha. The survey was conducted over four days 8 to 10 June and 17 June 2014. The key findings of the desktop assessment are: Twenty Threatened (Declared Rare‐extant) flora listed under the Wildlife Conservation Act 1950 and the Environment Protection and Biodiversity Conservation Act 1999 were identified as potentially occurring within close proximity to the study area. Thirty four Priority listed flora recognised by the Department of Parks and Wildlife were identified as potentially occurring within close proximity to the study area. Ten taxa are considered Likely to occur; 15 as Possible; and 30 as Unlikely to occur in the study area. Seven ecological communities listed as conservation significant, including four Threatened Ecological Communities and three Priority Ecological Communities were identified for the study area. 221 fauna species have been previously recorded in the vicinity of the study area; these include 12 amphibians, 47 reptiles, 134 birds and 28 mammals. 14 conservation significant fauna species were identified as potentially occurring within close proximity to the study area, of these one species is considered Likely to occur, three as Possible and four species as Unlikely to occur in the study area. The key findings of the field survey are: The vegetation condition of the study area was considered to be Good to Pristine as per Bush Forever (Government of Western Australia, 2000 and Keighery, 1994) vegetation condition scale. The areas of vegetation considered to be pristine were generally located within the middle of the study area where introduced taxa and human visitation is low or non‐existent. Dieback in the study was considered uninfested and presents a low risk of spreading the disease into other areas. Dieback risk assessment allocated 87.6 ha as Low risk vegetation, with 12.2 ha as moderate and 19.4 ha as high risk. Sixteen vegetation units were described, four are considered to be representative of Priority 2 Ecological Community Banksia Yellow‐Orange Sands and two Threatened Ecological Communities. A total of 154 vascular taxa were recorded from the study area. One Threatened taxa Chamelaucium sp. Gingin (N.G. Marchant 6) and One Priority taxa Hypolaena robusta (P4) were recorded in the study area. April 2015 NLWA‐00‐EN‐RP‐0009 / Rev 0 Page i Six introduced taxa were recorded from the study area. None of them are considered to be Weeds of National Significance. *Zantedeschia aethiopica is registered as a Declared Pest under the Biosecurity and Agriculture Management Act 2007 and three species, *Zantedeschia aethiopica, *Lupinus sp. and *Brassica tournefortii, have a High rating under the Environmental Weed Strategy for Western Australia. Three fauna habitats were recorded in the study area: Banksia Woodland, Eucalypt Woodland and a Dampland. The Black Cockatoo Habitat assessed Eucalypt Woodland (315 ha) as high value Black Cockatoo habitat, Banksia Woodland (663 ha) as being moderate and Dampland (3 ha) as low value Black Cockatoo habitat. All habitat types contained multiple foraging resources for Black cockatoos which equates to approximately 981 ha of foraging habitat. Thirty nine fauna species were recorded during the survey including one species of amphibian, three species of reptile, 32 species of bird and three species of mammal. The Western Brush Wallaby (Macropus irma) listed as Priority 4 under Department of Parks and Wildlife’s Priority listing was the only conservation significant fauna species recorded during the survey. Black‐eared Cuckoo (Chrysococcyx osculans) was recorded during the survey this record is considered to occur just outside of the southerly distribution of this otherwise common species. The study area is considered to be of high conservation value comprising habitat for a high number of threatened flora and fauna species. The vegetation is representative of a number of Threatened and Priority Ecological Communities, some of these are likely to be impacted by the NorthLink WA Project. The addition of the study area to the conservation estate will substantially increase the estate with the adjacent Class C Reserve and provide protection of an important ecological linkage. April 2015 NLWA‐00‐EN‐RP‐0009 / Rev 0 Page ii CONTENTS ABBREVIATIONS AND UNITS ...................................................................................................................VII 1 INTRODUCTION ............................................................................................................................... 1 1.1 Location and Tenure 1 1.2 Objective 1 1.3 Scope 2 2 ENVIRONMENTAL LEGISLATION AND POLICY ................................................................................... 4 2.1 Environmental Legislation 4 2.2 Environmental Policies 4 3 EXISTING ENVIRONMENT ................................................................................................................ 5 3.1 Climate 5 3.2 Topography and Landforms 5 3.3 Geology and Soils 6 3.4 Hydrology and Wetlands 6 3.5 Biological Context of Study Area 7 3.6 Regional Vegetation 8 4 METHODS ...................................................................................................................................... 10 4.1 Flora and Vegetation 10 4.1.1 Desktop Assessment 10 4.1.2 Field Survey 11 4.1.3 Limitations of Survey 15 4.2 Fauna 17 4.2.1 Desktop Assessment 17 4.2.2 Field Survey 18 4.2.3 Limitations of Survey 19 4.3 Dieback 21 5 RESULTS ........................................................................................................................................ 22 5.1 Flora and Vegetation 22 5.1.1 Desktop Assessment 22 5.1.2 Vegetation Condition 23 April 2015 NLWA‐00‐EN‐RP‐0009 / Rev 0 Page iii 5.1.3 Dieback 23 5.1.4 Vegetation Units 23 5.1.5 Vegetation Significance 24 5.1.6 Ecological Corridors 37 5.1.7 Taxa Recorded 37 5.1.8 Taxa of Significance 38 5.1.9 Introduced Taxa 41 5.2 Fauna 43 5.2.1 Fauna Habitats 43 5.2.2 Black Cockatoo Habitat Assessment 44 5.2.3 Faunal Assemblage 46 5.2.4 Conservation Significant Fauna 47 6 DISCUSSION .................................................................................................................................. 51 6.1 Flora 51 6.1.1 Vegetation 51 6.1.2 Flora 52 6.2 Fauna 53 6.2.1 Fauna Habitats 53 6.2.2 Black Cockatoo Habitat 53 6.2.3 Conservation Significant Fauna 54 6.3 Conservation Value 55 7 REFERENCES .................................................................................................................................. 56 Tables (in text) 1 Geomorphic wetland classification types 7 2 Vegetation complex extent 9 3 NVIS hierarchical structure 12 4 NVIS structural terminology 13 5 NVIS height class definition 14 6 Vegetation condition rating scale 15 7 Botanical survey limitations 16 8 Fauna survey limitations 19 9 Threatened and Priority Ecological Communities occurring within close proximity to the study area 23 10 Vegetation units recorded 25 11 Inferred floristic community types 33 12 Native vegetation extent by vegetation complexes on the Swan Coastal Plain 37 13 Dominant families recorded from the study area 38 14 Dominant genera recorded from the study area 38 April 2015 NLWA‐00‐EN‐RP‐0009 / Rev 0 Page iv 15 Threatened and Priority listed taxa recorded from the study area 40 16 Introduced taxa recorded from the study area 41 17 GPS coordinate (Zone 50J, GDA94) for the known Arum Lily location 42 18 Fauna habitat types 43 19 Foraging Resources of the study area 44 20 Breeding tree density 46 21 Location of recorded conservation significant fauna 47 22 Likelihood of occurrence for conservation significant fauna 48 Figures (in text) 3 Climate 5 Plates (in text) 1 Chamelaucium sp. Gingin (N.G. Marchant 6) growing along fence line between offset site and nature reserve 39 2 Chamelaucium sp. Gingin (N.G. Marchant 6), close‐up of buds before flowering 39 3 Chamelaucium sp. Gingin (N.G. Marchant 6), close‐up of flowers 39 4 Hypolaena robusta (Priority 4)* 39 5 Arum Lily (*Zantedeschia aethiopica) 39 Figures 1 Regional location 2 Study area 4 Vegetation complexes 5 Flora, fauna and vegetation constraints 6 Vegetation condition 7 Broad floristic formations 8 Vegetation associations 9 Conservation significant flora and vegetation 10 Fauna habitat and tree density 11 Black Cockatoo habitat Appendices A Department of Parks and Wildlife Database Searches B EPBC Act Database Search for MNES C Linear Phytophthora Dieback Risk Assessment D Conservation Significant Flora Known to Occur or Potentially Occur Within the Study Area E State and Federal Conservation