Alonnah-Sheepwash Track (Bruny Island) Weed Action Plan 2020 - 2030
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Alonnah-Sheepwash Track (Bruny Island) Weed Action Plan 2020 - 2030 A funding initiative of the Bruny Island Destination Action Plan Leadership Group Locally supported by Acknowledgements 3 Abbreviations 3 1.0: Introduction 4 1.1: Plan Goal 4 1.2: Study Area 4 1.3: Priority Weeds 6 1.4: Relevant Plans and Legislation 9 1.5: Weed Action Principles 10 1.6: Weed Control Methods 10 1.7: Responsibility 10 1.8: Hygiene 11 1.9: Living Appendix 11 2.0: Site Maps 12 2.1: Zone 1 12 2.2: Zone 2 13 2.3: Zone 3 14 2.4: Zone 4 15 2.5: Zone 5 16 2.6: Zone 6 17 2.7: Zone 7 18 2.8: Zone 8 19 3.0: Weed Actions 20 3.1: Action Plan 20 4.0: Photo Point Monitoring Pro Forma 27 References 28 Appendix 1 – Stakeholders 29 Key Stakeholders 29 Other Stakeholders 30 Appendix 2 – Priority Weeds; Spread and Control 31 Appendix 3 – Native Plant List 34 Alonnah-Sheepwash Track Weed Action Plan 2020-2030 – DRAFT FOR CONSULTATION 2 Acknowledgements The Alonnah-Sheepwash Weed Action Plan is jointly funded by Pennicott Wilderness Tours, Kingborough Council and the Tasmanian Government, as an initiative of the Bruny Island Destination Action Plan (DAP). The DAP Leadership Group is coordinated by Destination Southern Tasmania. The funding for the plan is being locally auspiced by the Bruny Island Boat Club. Communications and networking associated with the plan is being undertaken by members of the Bruny Island Residents and Ratepayers Network (‘Bruny Network’). Cassandra Strain is the principal author of this strategy. The author would like to acknowledge the commitment and ongoing assistance of Mathew Fagan during the development of the Strategy. Mathew is a Bruny Island resident and a member of the DAP Leadership Group. Abbreviations D Declared weed (under Tasmanian Weed Management Act 1999) KC Kingborough Council EW Environmental weed Alonnah-Sheepwash Track Weed Action Plan 2020-2030 – DRAFT FOR CONSULTATION 3 1.0: Introduction 1.1: Plan Goal To develop a long term step by step weed plan that can be implemented by local volunteers over the next 5-10 years to enhance the user experience of the Alonnah-Sheepwash Track. 1.2: Study Area The subject site is located at Alonnah, South Bruny Island, Tasmania as displayed in Map 1 – Locality Map. The study area for this Weed Action Plan is the Alonnah-Sheepwash Track, from the Alonnah Foreshore Park to where the track intersects with Matthew Flinders Drive, as well as adjoining public and private land and adjacent roads as displayed in Map 2 – Zone Map. The study area is predominantly Coastal Reserve (Crown Land), with areas of private land and Kingborough Council Reserve. The Central Channel Marine Conservation Area adjoins to the west. The track runs through Drooping sheoak (Allocasuarina verticillata) forest (TasVeg code NAV) with a sparse understorey and Black gum (Eucalyptus ovata) grassy forest (TasVeg code DOV). Black gum forest (DOV) is a threatened vegetation community and also provides foraging for the threatened swift parrot (Lathamus discolor). Map 1 – Locality Map Alonnah-Sheepwash Track Weed Action Plan 2020-2030 – DRAFT FOR CONSULTATION 4 Map 2 – Zone Map Alonnah-Sheepwash Track Weed Action Plan 2020-2030 – DRAFT FOR CONSULTATION 5 Map 3 – Zone Map Satellite Alonnah-Sheepwash Track Weed Action Plan 2020-2030 – DRAFT FOR CONSULTATION 6 1.3: Priority Weeds The weed present have been field mapped and prioritised based on legislative status, site density and distribution and invasive potential and impacts (see Table 1). Thirty-one (31) environmental and declared weeds were recorded on the 9 February 2020. Seven (7) of these are declared weeds under Weed Management Act 1999. New locations of the recently declared heaths, berryflower heath (Erica baccans) and andromeda heath (Erica holosericea) were recorded. The most widespread weed in the study area is tree heath (Erica arborea). Table 1 – Weed Prioritisation PRIORITY DESCRIPTION 1 Declared Zone A or Kingborough Priority 1 2 Declared Zone A widespread or Kingborough Priority 2 3 Declared Zone B isolated Declared Zone B widespread, Kingborough Priority 4 or non-declared isolated weed that 4 spreads rapidly 5 Non-declared weed spreads slowly and /or widespread Alonnah-Sheepwash Track Weed Action Plan 2020-2030 – DRAFT FOR CONSULTATION 7 Table 2 – Weeds Present and Prioritised KC Site Priority Scientific Name Common Name Status Priority Distribution 1 Billardiera heterophylla bluebell creeper EW 1 scattered 1 Erica baccans berryflower heath D isolated 1 Erica holosericea andromeda heath D isolated 1 Kunzea ambigua white kunzea EW 1 isolated 2 Acacia retinodes wirilda EW 2 scattered 2 Erica arborea tree heath D widespread 2 Erica lusitanica spanish heath D Zone B 4 widespread 3 Senecio jacobaea ragwort D Zone B 4 isolated 4 Cirsium vulgare spear thistle EW scattered 4 Delairea odorata cape ivy EW isolated 4 Pinus radiata radiata pine EW 4 scattered 4 Rosa rubiginosa sweet briar EW 4 widespread 4 Rubus sp. blackberry D Zone B 4 widespread 4 Ulex europaeus gorse D Zone B 4 widespread 4 Vinca major blue periwinkle EW 4 scattered 5 Acacia pravissima ovens wattle EW scattered Agapanthus praecox EW 5 agapanthus isolated subsp.orientalis 5 Callitris rhomboidea oyster bay pine EW isolated 5 Coprosma repens mirrorbush EW isolated 5 Cotoneaster sp. cotoneaster EW isolated 5 Crocosmia x crocosmiiflora montbretia EW isolated Alonnah-Sheepwash Track Weed Action Plan 2020-2030 – DRAFT FOR CONSULTATION 8 5 Cupressus macrocarpa monterey cypress EW scattered 5 Euryops abrotanifolius winter euryops EW isolated 5 Geranium sp. geranium EW isolated 5 Grevillea sp. grevillea EW isolated 5 Lupinus arboreus tree lupin EW scattered 5 Mentha pulegium pennyroyal EW scattered 5 Picea sp. unidentified pine EW isolated 5 Pittosporum undulatum sweet pitttosporum EW isolated 5 Prunus sp. unidentified fruit tree EW isolated 5 Sparaxis bulbifera harlequin flower EW scattered 1.4: Relevant Plans and Legislation Kingborough Weed Management Strategy and Action Plan 2017 – 2027 (the Plan) guides weed management in Kingborough municipality. The study area meets the four strategic priorities of the Plan; weed priorities (see Table 2, 1), community reserve priority (1. active community group), threatened species (1. threatened fauna habitat, foraging habitat for swift parrot (Lathamus discolour)) and vegetation (threatened vegetation community, Black gum (Eucalytpus ovata) forest and woodland (DOV)). The Weed Management Act 1999 (the Act) provides the principal legislative framework for weed management in Tasmania. The purpose of the Act is to provide for the control and eradication of declared weeds and to promote and strategic and sustainable approach to weed management in Tasmania. Declared weeds are those listed under the Act that have legally enforceable actions outlining their control. Zone A declared weeds are those that occur as isolated infestations in a Council area and their management aim is eradication. Zone B declared weeds are widespread in a Council area and their management aim is containment; preventing further spread. Alonnah-Sheepwash Track Weed Action Plan 2020-2030 – DRAFT FOR CONSULTATION 9 1.5: Weed Action Principles The following principles will promote the effective and efficient control of weeds in the study area: • Follow up existing control sites and monitor these every year. • Then start primary control beginning with Priority 1 weeds. • Control isolated and scattered sites before controlling large dense infestations. • For widespread weeds, focus on reducing spread (remove from track-sides and track access points). • Control all weeds in a site, don’t leave another weed to take its place (even if it is not high priority). • Early detection; prevent new weeds setting seed and becoming established. • Allow and promote natural regeneration of sites (see Appendix 3 – Native Plant List). • Clean (brush or washdown) clothes, tools and machinery before entering a weed free site and at the end of day. If working near the coast use the waters edge as a washdown site. • Minimise ground disturbance, especially sites that contain weed seeds. 1.6: Weed Control Methods Recommended weed control methods for each priority weed are tabulated in Appendix 2 – Priority Weeds: Spread and Control. 1.7: Responsibility The key stakeholders for this project are the Alonnah-Sheepwash Track Project Group, Kingborough Council and Crown Land Services. The responsibility for carrying out the Actions rests with the key stakeholders with support from additional stakeholders, as tabulated in Appendix 1 – Stakeholders. Alonnah-Sheepwash Track Weed Action Plan 2020-2030 – DRAFT FOR CONSULTATION 10 1.8: Hygiene Prevention is the most cost-effective form of weed management. To prevent the spread of weeds, the following practices are recommended for any works that involve the movement of soil and plant material. This includes track construction and maintenance, mowing, slashing and weed management. These recommendations are based on Weed and Disease Planning and Hygiene Guidelines - Preventing the spread of weeds and diseases in Tasmania (Stewart and Askey-Doran, 2015). Direction/order of work • Work from weed free zones into weed infested zones. Disposing of plant material • Leave plants as they fall, don’t drag and pile up. • For Priority 1 weeds only, cut & double bag flower/seed heads. Washdown • Washdown to remove soil, seeds and vegetation from tools, clothes, shoes and machinery to prevent the spread of weeds and pathogens • Washdown kit includes: o Scrubbing brush (clothes, shoes, tools) o Screw driver (scraping soles of shoes and mud from tools) • Carry out mobile washdown when moving from weed infested to weed free zones • Washdown site; at edge of weedy area or into garbage bag/bucket or edge of saltwater. Materials • Source track materials from weed and Phytophthora cinnamomi free quarries 1.9: Living Appendix The Appendices are stored in a virtual online folder (Google Drive) and can be edited by key stakeholders as changes occur to contacts, staff, resources and most effective weed control methods.