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'txiu ,{;LS chamctcnial b1 au unusti:dlc Leann ;utd do spent:. alxl plan) groe lh stage appeared hr M <br />snnu•L{ hat adLanced. as compLtred In the other years ul the study I?cnsnl nt nosuros plants rs suhlCa m <br />ICSS Lrar m Lear Lanauon due In clu,cnC. l;ra~mE_ :utd outer uncontmll(d {anahla Qtart Is coca. and u a <br />Inure pr{etsC Ux,l for asasvug sucxss nl nntin,l el7urts on t:rrgCt spears ht 2unl. a number al thotlC <br />plants,rillun RekrencC Area %r I N9re IlJled 10 IX InlrslCd h1 IhC Ian :W OI lhC painted lu(h hUlll'r111. Ixtt <br />lhC pCrecntagc of pl:mis LLnh I;tnac uas much Io1{Cr m Itclerat{x Area nl lh:m m liclCrcnw Area +:? and <br />adluxnt ;uws <br />Figure 2 Sutey Reference Area p1 Noxious <br />Species Density <br />c <br />A <br />~ 20 <br />d 15 .. -~-Thistle <br />n. <br />~ 10 <br />`~ -~--Thlslle & <br />5 - - <br />~ Houndstongue <br />~ 0 Combined <br />~ 1998 1999 2000 2001 <br />Ncfcrcnc'c Ana ~~, <br />From 149% l0 2txll. ahsolutr ancnd' noLtuua spcaec and non-Itovinus forte drdincJ. Lrlulc f:rtsti Coscr <br />utcrwscd 2lritl total ccgCtahrot wccr,{;t5 slgndicanttc IoLLCr Than m I'+`+%. Itcausc lhC incrwsc m grass <br />coLCr (Ld not ol7sCt the ckrhnc m fart, and noslous spxics coscr t Figure : i <br />Figure 1 -Sutey Reference Area #2 Absolute <br />Cover Trends; 1998-2001 <br />60 0°.6 r-Total Vegetation <br />c 50.0°~ ' Cover <br />u 40 0°6 . Non•noxtous Forb <br />d <br />5 30 096 - Cover <br />v°i 20.0°b - - Grass Cover <br />a 10.096 ~~ - "~~~ ~ Noxious S ecies <br />1998 1999 2000 2001 <br />I able s fists 2rxl I alxolutc and rc4tul C cover by spCims and culcgon I able t. presents absolute and <br />rcLtULC ancr sample means h1 categon and ywr. 144ri through 2txll AMolute weer of nesuxts spcaes <br />dccluktil Irani Iy t.°~. to ? i. s° u1 cr dlc wurx of tlrc study. ehilc ahLnlutC col Cr of pcrcnntal grtsxs <br />Inl(ti:IXYI Iritrit ~ 3"gib tP 2U,?OU iOlal 1'Cf;l'IalWn wLl'r fCitL11n510N. al nI111 '%"~~ Non•noclous fork cover <br />dcClutCd Irom 37 •"~ in 149%. to ;.,"° ur boil <br />\t the mdls ideal slxuCS IeL cl, cnscr of the noLwus plumClcss tlusdc ti<ihncJ Imm v t,°., m Iv4%. to a %°:~ <br />m 21 xil Imp:tCts to other. Icss abundant noslous clx:ctcs LLCrC um cti IdCnt (mm the a,ser data l H the moll <br />wnunun Ixnnntal IOAfs. ctcCr nulkcCteh l-Ishu4n/us trrrrl {krhncd lion IZ6~o to?.2'40. Larrol{ <br />