Lantana Lowdown Volume 2 Issue 1 - Weeds Australia

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Lantana Lowdown Volume 2 Issue 1 - Weeds Australia

Lantana Lowdown Volume 2, Issue 1Page 2Out of this worldRemote Sensing Guru:Andy StewartIn a world first, the LantanaWoNS project has enlistedthe help of satellite imageryto help track the weed.Andy Stewart and GrantHodgins are the scientistswith Queensland’s Departmentof Natural Resourcesand Water (NRW), workingin collaboration with BiosecurityQueensland, throughthe WoNS program, to mapthe spread of lantana alongAustralia’s eastern seaboard.Rather than rely on individuallandholders to reporttheir infestations, thismethod can help to identifyhigh priority areas that mayotherwise go unreported.Currently at its half-waypoint, the three-year projecthas directed $450,000 offunding towards identifyingextensive lantana outbreaksat several centres, includingMackay, Rockhampton andas far west as Emerald.This is an innovative projectthat will benefit landholdersacross the country.Mapping weeds using remotesensing technology onsuch a large scale has notbeen attempted before.Scientist Andy Stewart,from NRW’s Natural ResourceSciences centre, saidhis team used images fromNASA’s Landsat satellitesintegrated with GeographicInformation System (GIS)data on climate and disturbanceto map lantana.Lantana distribution: Current and potential“Composite images can becreated from satellite datathat show variation in vegetationtypes, as differentplants generate differentreflections of infra-red andvisible light,” Mr Stewartsaid.“The project has been inplace for 18 months and weare already getting positiveresults from an extensivefield-checking phase of initialmapping. We are wellon the way to developing auseful product.”“We’ve found infestationsalong most of the east coastand adjacent inland areas,from the tip of Cape Yorkdown to Eden, near theNSW/Victorian border.Mr Stewart said NRW’sremote sensing team hadbeen recognised internationallyfor the accuracy oftheir Landsat data archivedating back to 1980.“Before analysing our data,we make corrections to takeinto account varying conditions,such as sun angle ortopography, between differentlocations,” he said.“This project wouldn’t bepossible without the accuracyof these corrections.Queensland’s standard hasbeen independently reviewedby a science panel,which describes our methodsand processes asworld’s best practice.”The project is part of theDefeating the Weeds Menaceprogram, funded by theAustralian Governmentwith in-kind support fromthe Queensland Government.Weed Management in Remnant VegetationThe latest changes to vegetationmanagement legislationin Queensland haveraised many questions forlandholders – where canweed removal be undertaken;what kind of vegetationcan be removed; whereare the boundary limits;what control methods canbe used?Formal management guidesare currently being developedby Queensland’s NaturalResources and Water.However, until they arepublished, there is valuableinformation available tolandholders, accessiblefrom most state departmentsresponsible for thisparticular issue in their respectivestates.Landholders from Queenslandare advised to contacttheir local NRW ServiceCentre to determinewhether permits are necessaryfor their situation.Permits and advice are freeof charge.Alternatively, there are informationsheets available(Continued page 3)


Lantana Lowdown Volume 2, Issue 1Page 3Go West Young Man… and pull out that lantana!Armadale, WA: The locationof the containment site ©copyright Commonwealth ofAustralia (Geocience Australia)[2008]The Lantana Containment Zone projecthas been kept very busy over the last 12months with removal projects undertakenall around Australia.In places like Western Australia wherecurrent infestations are small and few innumber compared to the east coast, theobjective of the project is to remove allknown infestations and ensure surveillanceis done to identify any new andemerging sites. Considerable work still hasto be completed but the outlook is promisingwith the program receiving excellentsupport from local government, stateagencies and community groups.The majority of lantana infestations in WAare appearing in environmental areas, particularlyin sensitive riparian systemswhere an ongoing water supply is assured.However, significant naturalised infestationshave also been found on road vergesand forest edges, indicating lantana's abilityto survive and indeed thrive in areas ofWestern Australia despite the state's Mediterraneanclimate.One example of the support the programhas received from local authorities in WArelates to the management of lantana inArmadale.The Locationa section of dual carriageway along theAlbany Highway Bedfordale 36 km southof Perth, near Armadale, Western Australia.Before Shot: Lantana Containment Zones OfficerMichele Rogers, viewing the infestationThe Land ManagerAfter discussions with officers from TheDepartment of Main Roads Western Australia,an inspection was carried out and acontractor was organised to remove theinfestation;The RemovalAll of the plants were physically removedfrom the site, with the cost of the controlwork borne by Main Roads;The Follow UpTo ensure long term lantana follow up andcontrol at this site and any others on MainRoads land in Western Australia, lantana asbeen added to their “must be removed” list.This is a significant on-going commitmentby Main Roads and will contribute markedlyto the ensuring this Weed of NationalSignificance does not continue to spread inWA.Weed Management in Remnant Vegetation cont.Land clearing in WesternAustralia is under the jurisdictionof the Departonthe NRW website (seebelow).Under the Native VegetationAct your local CatchmentManagement Authority(CMA) can only approvethe clearing of remnantvegetation or protected regrowthin New SouthWales when it will improveor maintain environmentaloutcomes.Northern Territorylandholders have been providedwith a number of landclearing guidelines for areaswith native vegetation.Electronic copies of theseguidelines can be obtainedby visiting the Departmentof Natural Resources, Environmentand The Arts(NRETA) website. Alternatively,information on weedmanagement with regard toland clearing can also beobtained by phoningNRETA on 08 8999 2020ment of Environment andConservation (DEC), withfact sheets and informationon legislation and complianceavailable at the website.This site also providesa link to contact details ofeach DEC regional office.South Australia’s Departmentof Water, Land andBiodiversity Conservation(DWLBC) provides informationon land clearancecontrols and clearance approvals.QLD http://www.nrw.qld.gov.au/vegetation/information_sheets.htmlNSW http://www.nativevegetation.nsw.gov.au/index.htmlNT http://www.nt.gov.au/nreta/natres/natveg/guidelines/index.htmlWA http://portal.environment.wa.gov.au/portal/page?_pageid=53,34373&_dad=portal&_schema=PORTALSA http://www.dwlbc.sa.gov.au/native/nvsa/index.html

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