Weeds and feral animals One of the most major environmental threats against the Yarra Ranges National Park is invasive weeds. The park is rich with native plants that are being overcome by competition by the 200 species of weeds that are spreading into the park from private gardens.[],Blair, D. and Blair, S., 2005. Shire of Yarra Ranges Weed Management Strategy. Shire of Yarra Ranges, Lilydale, Victoria. In the park there are three significant types of weeds: Weeds of National Significance (WONS) are plants that have the most significant impacts across Australia both environmentally and economically, and are a priority for control.[], Weeds of National Significance 2009. Commonwealth of Australia. In the Yarra Ranges National Park some WONS are Willow (Salix app.), Blackberry (Rubus fruticosus spp.aggregate), Boneseed (Chrysanthemoides monilifera) and Bridal Creeper (Asparagus asparagoides). Native species as weeds. There are some Australian native species that can have weed characteristics when they grow outside of their normal range and can cause harm to the park's environment. Some native weeds in the park are Bluebell Creeper (Billardieria heterophylla), Cedar Wattle (Acacia elata) and Cootamundra Wattle (Acacia baileyana). Declared Noxious Weeds. These plants have been declared noxious under the Catchment and Land Protection Act 1994., Parsons, W.T. and Cuthbertson, E.G., 2001. Noxious weeds of Australia. CSIRO publishing. These plants have the potential to cause serious environmental harm and therefore must be managed. Ragwort (Senecio jacobaea), Spear Thistle (Cirsium vulgare) and Hawthorn (Crataegus monogyna) are all declared noxious weeds.
weeds And feRal AnIMals One oF thE most MAJor eNvirONmeNtal tHreaTs agaiNST The yarra raNGEs NATioNal ParK is invAsivE wEEDS. the ParK is RIcH with NatIve PlaNtS thAt are beIng OvErcoMe by compeTitiON by the 200 SpeciES oF WeEDs That are spREaDiNg inTo tHE paRk fRoM prIvate gardenS.[],blAiR, D. ANd BlAir, s., 2005. shIre of yaRrA ranGeS weed maNagEment sTratEgY. Shire of YArRa ranges, liLyDaLe, vicToRiA. In The Park ThERe are thrEe signiFicant TyPes of weeDs: weEDs OF NaTiONal sIgnIfiCaNce (wons) aRe pLaNts thAT Have The MosT sIgnifiCAnt imPAcTs Across AUStrAlia both enViroNMentaLlY aNd eConoMiCaLLy, AnD ArE a pRiority fOr Control.[], WEeds of naTIOnal sIgnIficance 2009. CoMmonWEalTH of auStrAlia. in THe yARRa RaNgEs NatioNal Park sOMe wOns arE wIlLOW (salix app.), blACkBerry (rubUs FRutIcoSus SpP.AggregatE), BoNeSeed (CHrysanThEmoIdEs monILIfera) aNd bridAL cREEPer (AsParagUs asparagoides). nATive sPEciES as wEeds. there are somE aUstRalIan NaTive spEciES thaT cAn hAvE weed ChAracteRIstICs WHen thEY grow oUtsIde of their nOrMal raNge and can cAuse HaRm tO the Park'S enVironMeNt. somE natiVe WEEDs In the pARk ARe BluEbEll cREepEr (billArDieria heTerOpHYLla), cEDar WatTlE (aCACia Elata) And cootamUndrA wattlE (acaCia baileyAna). dEcLaRED noxIOus WEedS. thEsE PlAnts Have BEen Declared NoxiOus UndEr thE cAtcHmeNt and Land proteCtion act 1994., parSons, W.T. aNd cutHbErtsoN, E.g., 2001. noxiouS weEdS of aUsTRAlia. cSiRO PuBLIsHiNg. these PLaNts haVe the pOTentIal to cAUse sERioUS enviRoNmental hARm aNd thEreForE muSt Be maNAGED. rAgwort (seNecIO jacobaea), sPear tHIStlE (cirSIum vUlgarE) AnD hawThOrN (CrataeGUs monogYnA) arE aLL declareD noxIOus weedS.