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Appendix 3 Black Cockatoo Assessment APPENDIX 3 BLACK COCKATOO ASSESSMENT MONTH 0000 JUNE 2016 RPS GROUP SOUTHERN RIVER PROJECT BLACK-COCKATOO ASSESSMENT Southern River Project Black-cockatoo Assessment Document status ecologia reference: 1674 Approved for issue Rev Author Reviewer/s Name Distributed to Date 0 M Young S Grein S Grein J Halleen 24 June 2016 1 2 3 ecologia Environment (2016). Reproduction of this report in whole or in part by electronic, mechanical or chemical means including photocopying, recording or by any information storage and retrieval system, in any language, is strictly prohibited without the express approval of RPS Group and/or ecologia Environment. Restrictions on Use This report has been prepared specifically for RPS Group. Neither the report nor its contents may be referred to or quoted in any statement, study, report, application, prospectus, loan, or other agreement document, without the express approval of RPS Group and/or ecologia Environment. ecologia Environment 1/224 Lord Street PERTH WA 6000 Phone: 08 6168 7200 Email: [email protected] i Southern River Project Black-cockatoo Assessment TABLE OF CONTENTS ACRONYMS ................................................................................................................................. IV EXECUTIVE SUMMARY .................................................................................................................. V 1 INTRODUCTION .............................................................................................................. 1 1.1 PROJECT AND STUDY AREA BACKGROUND ..............................................................................1 1.2 OBJECTIVES ...............................................................................................................................1 2 BLACK-COCKATOO INFORMATION .................................................................................. 1 2.1 CONSERVATION STATUS AND LIKELIHOOD OF OCCURRENCE ..................................................1 2.2 ECOLOGY OF CARNABY’S BLACK-COCKATOO ...........................................................................4 2.3 ECOLOGY OF THE FOREST RED-TAILED BLACK-COCKATOO ......................................................4 3 FIELD METHODS ............................................................................................................. 5 4 RESULTS AND DISCUSSION ............................................................................................. 6 4.1 FORAGING HABITAT ..................................................................................................................6 4.2 POTENTIAL BLACK-COCKATOO BREEDING TREES .....................................................................6 4.3 POTENTIAL BLACK-COCKATOO NIGHT ROOST HABITAT ...........................................................6 4.4 OTHER BLACK-COCKATOO OBSERVATIONS ..............................................................................6 5 CONCLUSION ................................................................................................................ 11 6 REFERENCES .................................................................................................................. 12 TABLES Table 1.1: Black-cockatoo conservation significance. ..............................................................................1 Table 1.1: Study Team. .............................................................................................................................5 FIGURES Figure 1.1: The Study Area. ......................................................................................................................2 Figure 1.2: The Study Area versus black-cockatoo modelled distributions. ............................................3 Figure 4.1: Significant black-cockatoo foraging habitat in the Study Area. .............................................7 Figure 4.2: Banksia menziesii-dominated black-cockatoo foraging habitat in the Study Area. ...............8 Figure 4.3: Banksia attenuata-dominated black-cockatoo foraging habitat in the Study Area. .............8 Figure 4.4: A large Marri tree present in the Study Area. ........................................................................9 Figure 4.5: Opportunistic black-cockatoo observations in the Study Area. .......................................... 10 ii Southern River Project Black-cockatoo Assessment APPENDICES Appendix A BLACK-COCKATOO THREATS AND IMPACT MITIGATION MEASURES iii Southern River Project Black-cockatoo Assessment ACRONYMS DBH Diameter at breast height (of a tree) DotE Department of the Environment (Commonwealth) EPBC Act Environment Protection and Biodiversity Conservation Act 1999 (Commonwealth) IBRA Interim Biogeographic Regionalisation of Australia WC Act Wildlife Conservation Act 1950 (WA) iv Southern River Project Black-cockatoo Assessment EXECUTIVE SUMMARY RPS Group is delivering planning and consulting services, on behalf of LWP Property Group, associated with the proposed development of Lots 13, 14, 21 and 22 Southern River Road, and Lots 19 and 20 Matison Street, Southern River, Western Australia (the Study Area; 21.3 ha). The Study Area falls within the modelled distribution of the threatened black-cockatoo species Carnaby’s Black- cockatoo, the Forest Red-tailed Black-cockatoo and Baudin’s Black-cockatoo (Calyptorhynchus latirostris, C. banksii naso and C. baudinii, respectively). RPS Group therefore engaged ecologia Environment to assess black-cockatoo habitat in the Study Area (this Assessment), in accordance with the EPBC Act Referral Guidelines for Three Threatened Black-cockatoo Species (DSEWPaC 2012). Two ecologia Environment personnel conducted a full-day field survey of the Study Area on 11 June 2016. The survey comprised an inspection of the entire site on foot, and was further informed by aerial imagery and existing vegetation mapping. The presence of black-cockatoos in the area was confirmed opportunistically during the field survey. Carnaby’s Black-cockatoo was seen and heard over the Study Area, and feeding evidence by black- cockatoos was observed. Approximately 4.9 ha (23%) of the Study Area contains significant stands of known black-cockatoo foraging habitat, as defined by DSEWPaC (2012). The majority of this is Banksia woodland, dominated either by B. menziesii (2.2 ha) or B. attenuata (2.5 ha). Other known foraging species are also present, comprising Blackbutt (Eucalyptus todtiana), Marri (Corymbia calophylla) and Western Sheoak (Allocasuarina fraseriana), and total 0.2 ha collectively. No breeding habitat (ie nesting hollows) was found in the Study Area. One large Marri tree is present and represents a significant food resource, but it does not meet the criterion required to classify it as a significant potential breeding tree (this tree is 41 cm diameter at breast height, versus the minimum requirement of 50 cm diameter). Potential night roosting habitat, comprising large, introduced eucalypt trees, is present in the Study Area (0.7 ha). These trees were identified as potential night roosting habitat based on their proximity to high quality foraging habitat, as described above, and to a water source (as per DSEWPaC 2012). It is unlikely that this potential night roosting habitat has real significance to black-cockatoos in the Study Area, however, as large, introduced eucalypts are common in the broader vicinity and the water source may contain water only occasionally. If the proposed development of the Study Area will require clearing of more than one hectare of the mapped foraging habitat, there is a high risk of the development would trigger a significant impact to black-cockatoos (DSEWPaC 2012). In this scenario, referral of the development to the DotE would be strongly recommended. The risks of significant impacts to black-cockatoos because of development in the Study Area may be reduced by adopting appropriate mitigation measures, i.e. impact avoidance and impact minimisation. For the Study Area, the most effective black-cockatoo impact mitigation strategy will be impact avoidance by way of reducing the amount of clearing of foraging habitat required for the proposed development. Impact minimisation measures should not be prioritised over impact avoidance. Nonetheless, impact minimisation strategies are also important. In the context of the Study Area, effective impact minimisation strategies may include creation of habitat corridors, restoration and rehabilitation of habitat and avoiding secondary impacts such as from weed invasion, Phytophthora dieback, fire and damage due to human activity. v Southern River Project Black-cockatoo Assessment 1 INTRODUCTION 1.1 PROJECT AND STUDY AREA BACKGROUND RPS Group (RPS) is delivering planning and consulting services, on behalf of LWP Property Group, associated with the proposed development of Lots 13, 14, 21 and 22 Southern River Road, and Lots 19 and 20 Matison Street, Southern River, Western Australia (the Study Area; Figure 2.1). The Study Area is within the City of Gosnells administrative boundary and is 21.3 ha in size. The Study Area is located in the Perth (SWA02) subregion of the Swan Coastal Plain IBRA bioregion (Figure 1.2; DotE 2012), and contains vegetation broadly consisting of Banksia attenuata/B. menziesii woodlands, Melaleuca damplands and mixed shrub damplands (Bioscience 2009). Land clearing and Phytophthora dieback are key threats to vegetation on the Swan Coastal Plain, and have resulted in substantial ecosystem and habitat loss since European settlement (Mitchell
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