E S T F O G U S N U M B E R 1 1 s

WESTERN AUSTRALIA

T 'ORIJS I 'AREAS( ) l | | I

sotrTlt w[sT

I N I I T A N

O C E A N

I-l,

u?ld ol SuDdureus ro '.lqrssod sE .lIIl seruBdruocse Sulop pu? ep\ltlte lD!-zassjDl E el€^ud pue serJu.SE tuauuJe^oaSurldops Jo ecroqc .qt suq :aBeueur eq1 qloq se^lo^ur uoqesllqn eJ.rnoseJ ra^e'alElEcsa ol f1e111 s lcrguoc ao ea:8ep -^\oH'erlBJlsnv urats.A\ Jo tueuuedecsql 'seseeicur slcnpord aseqt JoJ speeu slseJoJ eql ,{q pe8euE(u 'lseJoC alelssll puE s^{or8 uoq?lndod rno sV peleclpep $ euoz eql Jo llnq eql

'sesgq snoug^ slr Pue asn'lUetuUOJr Ue IeJnlEU aql Ur aCEeOpuel Jo loecuor eloq,r eql uo uonceueJ puu pue seru^rl.B eurl-eJnsrel rreql JoJdeep pue snorcsuoc arlnb€J sreqlo lnq ,{tqecol eql asn srella^{p ueqrn fuBhl'pe^los flrp€e.r.Je pue.Jnleu lEFqdued sle(urupI Jo aJE euos 'esu? sresn eql uee,rleq puB sluBld snoue8rpul Jo uorlE^resuo.slJruuo. eruos l€ql .lqElr^aur sr U aql roJ luE odur oslE sr eeJe .qJ

'I"lelll-enlq Pue Ia^aJ8

'euxnsq

Jelnrrued ur 'sl€Jaurur Jo eoJnos lusuodurr u3 sr EeJe aql 'sFnpoJd

IsJnlJnrrJEe pu€ : uoqeSulr pu? ./fulsnpur 'euroq JoJ Jels^\ : slmpoJdsnorJBA sI pu€ Jequq opnlcur serrnoseJ elqeAreueJ s.eeJE aqJ

'ereql sueddeq t?q^\ fqpolcoJ? fll"nlue^e eq IIrAr ,(poqf:ele 'uo1le:tuecuoc uorlelndod :olerus.elels eql ol ,(lrurxord str pu" "{}runllltuoc eqt ol eaJB eql .Io onl"Aorll Jo ^\eh uI 'sJuepecaJd JoJ Surf^ eJE sesn puel elrlrpdruoc (11aqIBrnllncu8e ur€ru oql ol pre,rls€e ur?ld l€ls€oJ eql uro{ pu" 'e oJ 01pr"A\qlnos 8uuepunl41 rxo{ eeJs eql) uorEal q"JE[ uJaquou eql uI

;,q!ro!rd a{Bl ol s! sesnraqlo l8re os ro esoql Jo q4q^l eSululrn ro uollBarrar 'relB^r 'raqu4l

INIIVS 'A't puD -ti]LVH't 'I /tq

|3ercl qDrrDlu|e{uot e{t u!

3lr!Euq, e3fl purl

'saseel autulauAq parc^o? lpnva tsou4e are qpq/Aotl s,vtotls pue 'svewq1te? nretuPue tsatot ?lels sarectput deu tuew-yeqao slsalol e lo uoltcas sltll >

'tcllluoJ lo itll!qqedurocp saa$ap 6u!Ate^ aq ue? anqt 'saJuelsunotlx aql uo duryuadao 'rqe/A Allen b po o 6 - svau qcpcpalsatol ^q pat s! pue sasy uea4saqt se-pue uolleatxat 'uoncnpotdreguJq ue Aaqt asec slql ul lueteddeApletpautlu! ete sasn alqlssod p)e^esarcqlA suolenlts asn puel Aueullo a^Dextpu! st qde$otoqd slqt

re^oc luou

'(patlp J as!,$Dt!to ssalun)sup ela alec

tq paqdolSototqd puo pa11duo3

oztr 6t00 Nsst rv'!dBd !c V l5u"uq u bs r.d suer8

Irr ( u' 0t x SZ) IR,{od olqnoc uo 'ergo SunuudrusEurr^oC aql /q Bn€rlsnv u$lse t ur p.tuud

'plt ,{1d ee^ui3ug oloqd trv,(q $reld leslo'sr!1l3sed^l otoJouol/{ {q (srul.t.ldzr uo 0r) lxll

uosua^els u€tlg ,{q Surss..ord !'qdefoloqdpau'Elqo eq ,rtru

uorssruurd usrta'teDslEU uoDouord le'crauuro. Jo.sE rql ut dada lueuespetaoul.E qth,{n?l!J.rd'-p4uudr,ita.{5q,{"uuonErrtqndsrqlursepurv

quad tar4s I!3rrB8 rs'Etl"nsnv urals.r' Jo ru.urlrPdlc srs.roJ srsrroJJo role^r.suoJ 533.A f g rtJ ioJ plrts'tqnd

'IJor pasodxa p seaJe auraotls 'auotstapA rcau arnlsed s tH L

uo snror

V

Five different land uses. watet, softwood and hatdwood ptoduction' grazing and rccrcation

Subuhia sprcading up the Gteenmount slopes

wiscly for the needs of the communityin the futurc.

Some of the principles which need tobe considered. and the ?rpproachcs beingused. arl ] covered in the fol lowing pages.

Landscape and land formsDecisions about land usc should not

be undertaken wilhout an [deqLlateknowledge of the land. i ts relat ive suit-abi l i ty for each possible use and theinteractions between alternative fornrsof land use. As the arer under discussionis very large. i t is desirable to subdivideit into a number of relat ively homo-geneous units. This has been done.f irst ly on the basis of landscape tndsecondly on the basis of vegetation.

The landscape approach. used by theC.S L R.O. Divi. ion of Soi l Re'carch inmappilrg of the Helenir and Coll ic Rivercrtchmcnts. is based on topographicposit ion and shape of the landscapeunits. I t is assumed that these. in turn.reffcct the distr ibution of soi ls and ol 'r ege re l i on . More de t r i l ed m i rnn ingbascd on site-vegetation typcs has beencarried out by thc Forest Departmenton a smaller scale in several key areas.

: r.,,'

saqols AIJot uoaJualtnJJo paltuJtl e seq 'ltun dteJs aqlut puno| satJads e 'yeqn ng <

sc lle^\ sc'sueqJrl pup sessolu loJ slelrqpqalqplnrs apr^ord sojp.J lilor aql puplrou peur^ u stjoddns ll Jo-unl Joatr! Lln-lq aqtJo uorlusrlrtn llnJ 5ql luJ^orduorlanrlsuoJ rulrp ur sarllnalurp Puc solls(rrp n-ullsrxc oql Jo rueorls-u,rop palPJolsr lrun eql sdorllno lJor luanbalpulr slros A\ollrqs 'scdols daats 01 anpiood sl sedols raddn aql Jo lrrtuetod uorl1rlL,.rrl rrLlrrfll ptrc lr:intlIlJuJn Jql

iulplrnq-iuroq pLll? uorsr,\rpqns:o1 dn peuodo uaJq slrq iJpu r[ra.riql Jo Llrllttr pur l]rtau enlq ro-J poDlrrnbuaaq sPq diuas Jqt Jo auos qt-radi.rr-'.N-arntsuci o1 pi]-lo^uoJ puc poil?al.i1:rl_rr1 ueeq r^pq sodols .lc.\\ol arlll\i.ro..l atrrls slr plirl sl .rifLr tLuii .rLll

PUlr sllrld lrrtlort]lN sr palrrun-rsip uiJq0r\rq (ls.rlo-t uqof puu sllpj arprnttls.l llrII lunoLu(raJ.rfJ Pprrnrurlr)

'sllrrjl aultualliaS) sl)il|l suor. r^ piu\\o{1.'tt:rtt.l .t turt.i. lrtl'l .1lt t.,t.,'1\

\Dlt)u1l.u)tu \ tt I l,r lt))tt'! )qtrirrr{ puf (uol.[ratDu!)].)tl snld.tlD)n:l)r.riILu urrlunoul'(ool)uD,r rnll,tlt))ngloopurr^\ '(rrr4rlr/ s ttt.rlD.)ng ) :lttlg-.r.llnq 1r.1/)o1l,rr)l \ td,rl,Jn3) Lu,i;rlrq^\ uoLLrlrs '\Dlt.iLllolD) s tl.\lt)) I)r.urL(r apnlJur sldilprna lurxrrLuop aqf\(illu^ ii,\r.r pJsr.ur ^ldiuqs qiltoirlluruld rq1 otur airoruo rr11o.; pur: ir:.Dn11'iurtuidras iurLruuJ uu.l.H iqt srrq.lns sLUalsls riAri lol1,'Lu JqI o.rnlpajP ait siinsod\a Jlrulr.rrJ IJol ,illuuoJqs.r-l ;uril.ro^o slros crlospod qlr,n-sidols dJals tq p.sr.rataulrqJ sl ll tsr,\\ilqt ot Lnrrld lutsroJ ur^rS aqt iq put:lsrlJ .)ql ol a;nrU n_Llll.nr(l rqt lo sllosar]l.rJtrrl .qt rq PaPunoq sr i.rl.rns srqf

l!u n dle3s aql

urnl ul Llllla qll,{\ lDap ol Jlqrilsapsr tr asn pulrl jo sLu.roJ Illl .loJ pallns,{llunbe tou a-llt sllun snouu^ arll sV

'n-urddPru palmlJp .roJpollns Jroru sr q)r?olddr Iltuorlrt:n-a^ alll'llun JdtJspurl arro ulq1t,\\ lnJJo,{l1u!llb-i{ sJd,{l uorlu}aia^ IlllJ^os pup sed,{llros II]IJAJS Slt iade.roH clul?ss(ltluoJalproiq p.roJ palrns ialleq sr LJJuolddeiloursPuDl iLIl p.irnbii lnrlcp .qlnuu

-{illls ripLrn ra rr oql Jo ozls Jq1 uon-urpu.dep,{lquJn-urqJrolur posn aq uuJprrt pilrrtJtrir uaeq o^rLl sJqJuorddEo,t1 :q1 uorlrlrl_r,l aqt Jo olnlJn.rls pupuortlsoduror rqt ur pollauJr .rp slros puuiqdD.rn-odot all]ulrla su LlJlls 'tuJrlruolr^-ur aqt jo siolalrl iullloltuoa aql lpqlttotldrrrnssr: rri\oid aql (to paslrq st stql

frqj i!frp""-

sllauso9 Jo6utAteno <

reptilian fauna. These habitats are notunique and similar habitats are to befound in the deep river valleys andmonadnocks to be discussed later. Thearea offers many very attractive views(in a State remarkable for its paucity ofhills) and is popular with recreationists,whether motorised or on foot.

In the Perth Metropolitan Arca thereare obvious conflicts between quarrying,urban spread and aesthetic values. Inparts of the farming area, the hills areperiodically ravaged by fire. These arerelatively localised in area and, over thel€ngths of the scrap, the curr€nt andforeseeable conflicts a.e few. Manyrepresentative sites have been preservedwithin the National Park system. thoughthe reserves tend to be small. The mainvalue of the ar€a appears to be as arecreational rcsource especially on landwhich is publically controlled.

Recreational development within thefarming properties appears to be anobvious avenue for the future.

The monadnocksSeveral peaks rise above the lateritic

Dlateau of low relief. These residuals(or monadnocks) of an older, higherplateau provide natural observationposts, and have been utilised for manyyears as sites for fir€ lookout towers.This unit is probably best r€presented byMounts Cooke (580 m), Randall (500 m),Vinc€nt, Cuthbert and Eagle Hill, whichform a chainjust to the east olthe Albany

f Swamps are the main habitat fol

L Hiking, ML Cooke. Mts. Vincent,

Highway. Others include Mount Dale(550 m) and Mount Solus (570 m), twofire lookouts w€ll known to the recreatingpublic.

Apart from the typical lichen, moss,angiosperm ecotypes of the rock facesthemselves, the predominant eucalyptsinclude marri and wandoo, with butter-bark and jarrah as minor componentsin the vegetation. The rock faces providesuitable habitats for a vadety of reptilesand many birds are found in the

quokkas and othet small marcupials.

Cuthbeft and Randall on the hotizon

surrounding shrubbery This land unit iswell suited for recreation. Visitors maychoose from either the mor€ passiveforms (picnics, views) or highly activeforms of enjoyment (bushwalking, rockclimbing). Th€ monadnocks providesome of the most spectacular views tob€ had within a relatively short distance(80 km) of Perth.

This unit has many similarities withthe scarp unit but where the latter islargely cleared and held as ptivateproperty, the monadnocks are mostlyforested and held as State Forest.

This land unit is most important forits recreatiolal and conservation values.It is of minor value for most economicactivities.

Th€ swamp units !rMinor development of swamp

associations is found on the fringes ofmost streams, but is best developed inbroad, gently sloping valleys. In thewestem swamps, the main trees arebnllich (Eucalyptus megacarpa), black'b]utt (Eucalyptus patezs) and floodedgum (Eucalyptus radis); which occureither in pure or mixed stalds, withunderstorey of swamp banksia (Ban,tsialittorulis) and a tall shrvb (Agonis l,nearF

foliq). 'fhe soils range from silty to

sandy loam alluvium and are oftenbrightly coloured. These swamps tendto act as soaks for much of the rainfall,and use much water during the summer.Clearing for agriculture or destruclionof vegetation by disease can greatlyincrease the water yield.

The swamp is the main habitat for

,.-*'.

:.,'.r',

Llallnl)e.ue, le sp teqi tO L

i\r:q s(ularts iqt .lo lsol\ luall\aidsr iurciLtnra pll^\ putr pisn .ilr.\lraq iip\ills aruarcl l)idoJa\ap iqf il-uruoi.ntLLrptrrr ;urtlsr I ;unlrtr rI\s n-ulaoulr:r st-' qans'uortrirrai]l paslrq ralll\\ roj lL tl.toclL0r'r rr il rr'rl\ .'.rr ;.. p..trrLrr,1 u:..qt,'\ t' ll \tl{ Ir\l.t .\tlt .\.t.rtllA (..'|ll.t:n,1\

durr:ms.1o pulq ,\\oulu l iq pe1ul11\r rr\lj arll .\illP\ .rqt lo looLl :rql ul'l\arol a\rtarr P PUrr \\\.i'r\ tru.rrs !trot inp uoltrirait iol lrtluatod tlraj; tnq;urtrLU r()l lPrtrritod alltrl surl aI( rqftlrlsar irrur uorso:a snor.rls plqir-nolcl

rr:rrl.\\ {llrrrids. lro\ .qt Io iltllq-rp()iir .llt pulr UIrr:rt .qt .lo ssrudrrtriql .lo asnraafl lloult.r ul asllalaut !lltol \l)0il i.^o. ls.Jol iql .lo tu lr:rlJ

qlli(l ol lisolrn.rilr.t intrq \.I.r\1,,lj I't.1 l r: rL U.rl. 'n

lalilrrlr aruos qlr,\^ tnq :;ullpuruopalclsprrrqaJo rlll^\ ',itr:do.rd otr,rr-ld st pleqaiI s|aio alqPiiprsuo,) ll)lDtl)1| \)ut.l)itlrd rtrlprl l.rItuoa atloxe n-Lrr^1oi;-lsplrllt ot p.tuuld pur piipalr uaaq i\rq\rrirr iuros \,t)t\t);lo\ (q ) \\utotl)\ll)

lrr_l .rallr,\\ aql \r qans sluttlLLn]rlr ,rillr pur \pllCl iuttu slloddns puu isPistpiq prt..llrun i1:rl'rr:1 sr 11nn srq-L sjnatooslrr (/)\rrr\.y/ rtr/,)lr, ) turttriidd.d lr.iltaqt.lo t\a\\-qtn()s iqt ul padolJ^ip i.\pqunr!lr PUr ltnqI.rlq.lo spucts lLl.llirr\.1sitrs irLlro\ uo lnq luauodru()a t.lssirlI qll nl qll.\\ sita:rds ltI|?urLuof irll\r ri|lrn sll05 ul\olq ot pat rllltirl Jruu'iltrull.i

-lo sarnsod\.r llprus lllr,{\ ual.lo's.dols di:rt\ iq p:lqrcltt sl lrrnt \tqf

\lllllr.1illa\uin- \r ot pi.r riJ.ii sllos lo UortllLtl ro.l.ql ur n-urtlns.r '(.trloidrrs) :{:)oi \.r1uno.pi\odLLro..1p n'u til ripult iqt otu I .il1!l0ulrrtu.1lll iqt q;norql l)rpoi. ;ru:q irqt'\.1s[a iUuru ul nritrld aq] olur l.d..piJi\r\\ili;orcl lnr s:rr ttnqrrl pl t sllntall{tunrru.(lt (lnr.s iql q.rrorddr {iqt cV

s^e lle^ lon u ar{I

s:rsodrncl ilddns rrtr:,$ .rolpiruncii pLrrlru rcl rro i11r:rldsr 1r:rlrrrlocl.r:It'|lr"rrr.\.. .)\r'tl i'l\ !ttU | .i ltfr\. ).1

ilclrlllr\lr ilrprr.ii sr rrorlr-'i .rr (Drds ro1rilrA\ lLri(t:ru ricl pull u|ssiliLr a(l \|ut.n-uullri(] ;rrr,,rri; .l r. pur ;ur\ r ird-\llJrqaro iiuru.pnr; l.Inrur iol piru.l.uiaq a^pq plnr itiidotd ilp.\lrcl su plaqilnr \\allr\ a[rL)s asPasrp Jll] atpialolur:a !lrrLl \ saurd pur sldillralta atto\;)tltr,\ l)aturld.r n-uliq trr (r.ju trlqtl- raptsuoa pulr \lt \r larlpo rd l\i ro-l s.la \\olillutinlru;rs sttll ltuotut)ult) D k)tlltllr,/lV./ sn3unJ .llt iq P.rsnrr.str.stp lol

loor aq1 iq l.1.allr {lir.'a^is uirl.lo iill'l i lr:||r,irur'h' rrJt t,ilu|l tlt.t r'.1 tq

'splr(.1 \ur]lu PUrr (r/rrr1rl.r)/{ \/l/.)/.)s)rr:{Iorlh iql ptnr (r/r/r.\r./1) utl).)t)s:l) toolrpUrq pisou-tioqs ,l/.ll 'l\itl1.r)ll \ lnl)

-,)/r/t ) opllr(l :rqt slr q.ns slcldnsIl]ru

Alolstepun Aqqntqs esuap quM'sdueMs lt)atsaM aql ol Ltourluo7 sanads e qJt ng I

r: :!

L Fishing in the Muffay Rivet. Les Harman.

I Excellent stands of blackbutt develop onsome rivet valleYs,

LWater and steep teuain give the ivet valley unit a grcatpotential for rccteation

f The effects of Phytophthora cinnamomi on native forcst neat the swamp units.

lI

'neateld

J\ualel aqt uo puno! aq ot st qe elJo uaurdop^ap ]saq aqt te! AE L

pue 'If,oJ (elrlordes) p.soduroj.p uro{pedolerap slerroleru ({ef€p) .nrurloEI^q qldep le ureFepun $ qcrq,tr ducauolsuorr ue JeAo sle^er8 ,{pues Jrlualel

Jo lsrsuo. slros aql EeJrr ,{pnts oql urtlun a^lsuelxa lsou aql r€J ^q sr U 'lo^el Eos a^oqe tu o,tt ol 082 puEldnSullelnpun flpeorq e sr '

V'l[Jo nEoleldIteJC eql Jo e8uuJ urelse.{^ oql Jour?d 3ur{dnJJo'nnrtpld SurllEC aqI

nealeld c!llJelel eql

'pasn ,{[^eoq ^]a^ ere lle,4\eq] Jeou peprAoJd ueuo senrlrJp,J cru3tdaqt pue onboqJeq oqt pue slsruorl€erterroJ uollcalle SuoJts E sr Jloslr tllep oqf'uorlp8ull roj,{lusruud llnq sruep uopellruuad ueaq o^eq SuruorJE(u pue8u[uurr.4\s'Surqsg'Suueog ponrurradsl uorluJtJal Jo luloJ ou slroAlosaJ,{lddns relPy' uElrlodorlor^l uO'rlo^losor oql tuo{ llrds ol pe^\ollpsr '^ller.Urue Jo .{llprn}eu raqtra'qJrq^{r5tn,a\ Jo lunorur-' Jql uo \purd.p {lJ;Jplssouo^rlJEJlle sll IIE^\ uep eqlJo (llBerls-u,\lop reAu eql sr uorlErrcor roJ elqElre^esur€uer qcrqA{ alls IErnleu ^luo oql'sur€p eqt Jo le^ol Jolp.a\ dol eqt uro4,{p,{{p u-r1 I tseol l€ {€ts ot pa8rn sr Jrlqndoql pu€ ,{lddns Jole,a oql Jo uorlnllodot pEal ^€ur qrrqA{ soll^rlr€ IEuorleer-Jer seSernocslp uorlElsr8al ]uaseJd'poretle f,lqe^euterl pu€ papoouuaaq s€q lrun puel srql Jo uoruodordairEl e os puE srsodrnd uorle8uJr pue,{lddns r.le^{ roJ perutuep ueoq {pueJlE

'neatetd aqtJO aUOz u)atsea aql ut qe el qlt/A saxtu saLutlawos oopueM YeqtapMod f

taM Aa^|eH te Fato! auq f

'lserc] qe el aql ul suottetado 6ut66oj L

The plateau is not greatly suited foreither agriculture or pine plantat ionsdue to poverty of its soils. It is also lesssuited for recreation and fauna con-servation than the val leys.

It appears to contribute little to thetoral streamflow as the bulk of the rain-fall is stored in the very deep soil and rstranspired during the summer nonths.Parts of the underlying saprol i te arevery sal ine and clearing may lead tocxcessive stream sal inity.

The main competit ion for the landis between jarrah production forestryand bauxite mining. Belbre the latteris extended to the projected scaleenvisaged by the mining companres.there is a real need for a detailed studyof i ls effects on lhe srl ini t) and turbidityof the streams

Eastern val leysJust as the eastem part of the uplands

differs from the western part in the heightand density of vegetation, there arealso differences in the valleys. Thefurther one fol lows a major val ley up-stream. the broader and shal lower rrtends to become. As a result, there arefewer rock outcrops, and the soils tend tobe older and deeper. The change in vege-tat ion is even more pronounced. Theplace of marri and blackbutt is increasingly taken over by wandoo, whichforms rather open, and only moderatelytal l forest. Where the val leys areparricularly broad. f lat and poorly drain-ed, the val ley f loor is either completelytreeless, or only carries vefy open standsof paperbarks (Melaleuca preissiana),flooded gum (Eucul)'ptus rudis) andswamp banksia ( Bnr k.ttu lit tr..rrlis). From

L Jarrah regenefttion, 53 years oM,east of Dwellingup

sometimes subdivided on the basis ofcolour into mott led and pal l id zones.Slopes are gentle and by far the bestdevelopment ofjarrah is to be observedon these sit€s. To date, these fine standshave been only slightly affected byP hy t o p ht horo c inwmom i.

The height. density and structure ofthe forest is determined by the climate.In the moist weslern zone the stands mayexceed .15 m in heipht and 4{J m2 ha inbasal area, and have a second storey ofsmall trees such as bull banksia (Bazksrcgrundisl and sheoak (Casuarina lru-seriona\. By contrast forests on similarsoils in the dry eastem zone tend to beonly 20-25 m high and often have basalareas of only 20 m'/ha. The secondsrorey of small trees is largely mis! ingand even the shrub storey is very low,giving the forest a very open appearance.Powder bark \$andoo (Eucall'plut ttc-c?/(,r,.e) sometimes mixes with jarrah onthese srtes.

Much of this surface is potentiallysuited for bauxite mining. This involvesopen cast mining which varies from2 to 9 m in depth. All of the State Forestsnorth of Collie are currently held undermineral lease for bauxite by Alcoa,Alwest and Pacminex companies. Re-vegetation of the mined-over site withtrees and shrubs is ilcluded in theagreement between the State Govern-ment and the companies.

1 0

A

V

Seedlings planted on what remains of the fotest soil aftet bauxite mining

A salt eflected eastem valley near Wundowie

d

rco ^e e^ AdweMS L

'uotOat uralsea aql ulpaproJar AfisouJ s! (uJalqua

euneJ Mau s, V A ) Jequnu aqf <

ul slrsodap ,{pues ̂q pale^oc uauoer€ spuEldn eql ur suorssordep eqt pues,{ellp^ pporq aql Jo sodols r.^{ol eql

suolssardap pue sedolsAelle^ uo slrsodep ApueS

'sra^rd aurluedres puE SuruueJ 'euelaH

oql Jo sluauqclec aql uorJ PoPnpxoi(le8Jel ueeq seq erntln.u8e ]€ql uosEoJsrql roJ ,{garqj sr ll srro^resar uEo-rls-u^rop eql ur rotE^\ aql 3o ,{1r1enb aqtslrods ,{lelerullln pup 'Icols Jo uorle8uJrroJ alq€lrnsun rale^\ Iorrj aql selPuoslp U uorsoJe {lln8 pue ereJrns ol uadosEerE qcns Surpuersarpodord los aq1ur o8ueqo € pue uorlelago^ oql Jo qlpopaql sr srql Jo IraJe .lErultln .qJ e.eJrnseqt ol tles Euuq ol spual l'tlnt ur qJrq.r'alqel lale^i puno:8 oqt ur osrJ E ol pelspq SuupalJ oql {lluaueD lsoroC et€tsrqt ot tue.Elpe saruedord etp^ud uoe.€ld ualEt seq ejnlsed roj Surrrplt tEqladE.spuel oql Jo uoruod slqt ur sr tl

'saarl eql Jo Ireq 0lrq^1-^urEaJJ'qloorus aql pue 'spuets oql JoaJnluu alrllJpd ueuo 'uado eql ol .npSurseald fuo^ osle sr lseroJ oopuE^\ oql,{llpf,rl.qlsov uo€or uj.lsee eql uro{pepJoter ^llsoru aJe (uua8na xndo!.rDn)rutrlruet aqt puE (.rr/ Dt)sDl- sntqo)a&.t,i n)lpqurnu eql se sorcads erer ,(la^rlrrlorqJns -eunP,J roJ slElrqEq luPuoqurr'ra^a/ oq oJP qlog anlP^ J[uouoJe Jopro^op flalalduoc o:e sdue,,ns aq1 pueiurplor.{ ^\oJ {luo 5rE sls5roJ oopue^1 eqluorlJnpord requrl Jo ,rer^ Jo lurod aql

'puels aql ]o etnleua4tlyed 'uado aqt ol anp 6u6eeldA ectteqlsae-oopueM u!61!A f

Aalle^ uralsea peorq e ut'oopue4 Aq papunoLns dute/ S f

-

their most extreme form (leached, dry,grey sands), they carry a low woodlandof banksias (Banksia attenuata, Banksgmenziesiil and Christmas Iree (Nuytsiu

foribunda). The shrubby understorey rsrich in heath-like plants of the familiesProteaceae, Epacridaceae and Myrta-ceae, many of which have beautifulflowers. It is this variety of ffowers thatis necessary for the honey possum(Tarsipes spencerae) found within thistype. Where the sands arc somewhatless leached or less dry, an open jarrahwoodland with a heathlike shrub under-storey replaces the banksias. Botanicallythis is one of the richest components ofthe Darling Range system. So far it hasnot been greatly affected by diebackchiefly because it occurs in isolated andout-of-the-way places. The site ispossibly too dry for the disease to becomereadily established, but many of thespecies occurring in it are highly suscep-tible. So fa. there has been only a minorconversion of this low quality forest topine plantations. Investigations areunder way to ensure that the short periodwithout tree cover does not affect thequality of the water resource.

Dissected slopesAlthough mild slopes tend to pre-

dominate in the eastern half of theforest, in areas such as the headwatersof the Helena and Dale Rivers, thereverse applies. Here th€ creeks cutsharply into the flanks of the uplandplateau creating a broken pattem ofvalleys, breakaways and ridges; withoutcrops ofgranitic and epidiorite rocks.

1 2

Th€re is a corresponding diversity in thesoils, which range from the lateriticgravels on the remlants of the oldsurface, to pale clayey soils formed on thekaolinitic zone, shallow grey-brownsandy loams developed from granite andstony red loams developed fromeDidiorite.

The veg€tation ranges from jarrahforest on the lateritic gravels throughwandoo woodlands o1l the slopes to thefringes of flooded gum and blackbuttalong the creeks. The greatest div€rsityis found around the rock outcroDs where

f Granite sheoak beside a lichen coveted rcck outctop.

there is a change from a thin lichenlayer on the bare rock, through thickshrub thickets and groves of granitesheoak (Casuarina huegeliana) to thewandoo woodland on the deeper soils.The variety of land forms and vegetationcreates a very pleasing landscape, whichis rich in both wildflowers and fauna.Some of the animals found here are theechrdna (Tachyglossus aculeatus), pigmypossum (Cercarlelus con(: innus), trng-tailpossi.Jm (Pseudocheirus percgr ihus) andred-tailed wambenger (Phascogale cal-rrc). The timber production, agriculturaland mining potential of this unit is low.

Resolut ion of conf l ictsThe outline so far has d€scribed the

major land systems and discussed thecurrent and foreseeable land uses ineach. It is obvious that the probl€m ofland use planning in this area is acomplex one.

llhich objectives should be pursued?What is the Iiterio fot success?Should frm la d use plans he ittlple-

How much contol should be exercisedover Ihe respective users?Some forms of land use are unable to

coexist and are mutually exclusive atpresent (e.9. agriculture and pine plant-ations, reservoirs for domestic suppliesand water based recreation). Thes€cuffent practices could well b€ alteredby changes in technology or throughpublic pressures. Other forms of landuse result in strong conflicts of interest(e.g. mining in National Parks or State

L Low banksia and Chtistmas tee woodland on leached sands in deprcssions.

'uotoar qetel unqttou aqt u sdtqsuottelat teu6op?a lo ppow leuo8uautp tno! L

ueureH sal-J/U/? sadoF pepessp aqt ut punol sleutue etll 6uoue s euptqza aq1 aleql qtr.ar {uou:req ur pue (lnJulp8)punos,{llBcrurouoJa'(alqlseeJ) punos,{llBcruqcel aq plnoqs 'esn ecrnose{'poo3 o11qnd lseleara .ql .^arqJeol esn [4\o srq ,{Jrporu ol pue sraqlo Joslueuarrnbal aqlJo eJB^ie eq ol resn qt€oroJ paau lEer e aq ol sjE.dde .JJqJ'lsoroJ trqlleeq ̂ltuetJn] o7\!r luloulDuul)oroytrltlotttl4 p€eids ^llpeeJ plno)slsruollpercer poslJolol l fB^re soJlotu-olrl ^ueru uep € ur ,{lrl€nb lete/ oqllceJe pue ^trull€s ul s.s€elcut ol p€alppoc ernllncu8e :o SuIuIur roJ 8uue.l3's1sed ro3 unoq:eq sE uraql pJEaej puB'seu?punoq rreql ol asol. s?eJe uoqP- -Iesuoa ro $lrBd l€uotl€N lueseJ ̂eulsJ.uu?d '.rncco osls plnoc allsoddo eqlpug urnq s.relulgJ g qto4 ed€cse u€,{qlurnq eq f?tu seurd s.J4se.roJ eI{J ln.Jollrls ,{eur slcruuoJ sBoJB el?r€das otulpauoz eJP seqr^rlcE aql ueq^t ue^a

'(srelooqs PuesJed(uEc 'sls€rsnqluo leoq re,nod pu?sretulul^rs 3 a) sJesn uee^uaq slclguoclcuqsrp eq pFoc ereqt 'uollBetcel seq.ns ,{lr^rlc€ al8urs € urqlrld (slseloJ

st4ndards of sociclt ' (adoptlblc) Lirnduse crnnot be lL slnt ic concept {ndperiodic rcvision of the plan is esscnl ir li f the mrnager is going to copc wilh lhcgrowing and pcrhaps changing demands.for the vi l f ious prodlrcts which societyJes r res t o ob ta rn i r om l hc . l f c i t i nqucst,on.

Oli icers of the Forcsl Dcp.lr l l lcnlhavc bccn i nvo l \ ed i l l r r r r J r r sc . i t r r d i r .for some considerablc t ime. Areas whichhave been investigxted includc:

(a ) The Swrn Coas t l l P l i r i n Do r th o l 'Perth.

(r) Thc Pemberton region.( r ) The Nannup Sunk lands . und(11) The South Coast Proiect.

Within thc northcrn i l rrah l i )rest.detai led research has bcen carr icd out bv

V Rapids on Notth Datidalup Rivel

depirrtneDtlr l slal l . somelimcs workinein coniuncl ion wilh other or{ irnis1l l ions

Aspects inclnde I(r) An invcntorv oi- resourccs.(b) Reseirrch slucl ies rnto scvcral

rclcvirnt aspects including jaIrahdieback. l i runa rcse'arch. l i re rc-selrch. mioins pit rchi lbi l i t ! t ion(in coDjunction with A.LCOA).spccics tr i i l ls. si lvicul luft l l technlques

(.) Rccrcation srrrveys bv ol l icel l \ andthrouSh the nrediunr of question-nir ires hrve al lempted to cvalualcthc numbcrs. reasons. prettrcnccs.l i kes and d i s l i k cs o l v i s i t o f s , .the forcsl arcir

(r/) Detai led ecolopict l survcvs ol ' l i )urlarge lrels havc bccn complctcd.

( . ) W i th i n t hc WungonE ca t chn l cn lthc rcl i l l ionship bclwecn soi ls undresoLlrce use has bccn describcd( j o i n t l y w i rh C .S l .R O ) .

( l) A systen anrl lsis studv of thcV r r r r , r l R i r e r ' a i t l . ' h r l c n l t . t r lprog|ess in coniuncl ion wilhC S L R.O . othcr govc.nnlent andpr ivate orgirnisations. The oblccl lve is to n]aximise thc Incf i l urut i l i ly of this cirtchlncnl to thcconrInuni ly and i l inlolves thelu l l ocu l i on o l op l i n l l l s c t s o l 'l u c t i ! i l i e s l ( ) e l r ( j h ( ) l l he l i r ndse lDcL rn i t . p r c r i ous l r r l c s r r i bcd

Thcsc pr() jccts ainr lo fro! ide irsounder knowlcdgc ol ' the lechnological. sociological irnd ccoronric hasesfor land Lrse decisions within thisinlportanl rcsorlrcc.

Rapids on Notth Datidalup Rivel

I

snoroLlnu pue setsrueq (equlllew sntdorecnfl iil3it"g,l; \1atq6 uroueuux eloqqdottqd sn6unl eql Iq p€snea €seestpe*lceqerp q potcojJe l€lrutrap osoql ale seate poqcleH

svSuv )cvs3to

uotlexrl o*qdsoqd are sercelsqo ureL! aql ,9-t #ii;:"a,:f'" 'ssoulaM a^tssecxo oq plno5 s€tceds alloxe Joluoluqsrlqelsa ol olcglsqo roleut ̂luo otll ,e-! sedit ltos UO 'Aluo

lros dol ol tolor ateq u€^!6 sarnuol eqls3d^l. ltos

stp etuoseted ' uoslAt 'ea r^etg .eteutorea sqdtletnf 'eueuase4 euuense) ereaqteg sotlueuepy : sodols.relr ol pue €lppll l sto^er9 Apues pue spues Alle^erc .d

'nup^Fc snqvel4qd,,",0,", ",-rro"ffit1::i!ilil?"uoboclocnaj'eteutfueur sntdtlecnI .ue6qreq soqweuapv: xneeleld pus sodols lsddn ,to sle^elo esreo3 lpues .S

e Aqclotet sntd^lecnf 'unlelnqteds urn4eutul'suetecl snldteanf ,unlpJl$n6ueeuur^lerod^H 'etlcheJossu eateH :sedols eltuol lslol^l o 'untersnOue eraJedsoptdel.euoDe4al euaeleut-osew'suapd sntcl^letnf 'Luntrclnsnoue euaLlecodiH 'eqdtecosstt ea)eH:sodols lo^ ol eltl.|ej ilgterepol l M

eeetrcteuls eter e etercraeo,ruoa"o", "u""t".or"lji"l3lrl!!, -1ees sncheaofiel 'a to!4sn6ue euut^lecodAH :slell l5!o! l .c

'euoOetpt euaeptuoseW 'snsouers sndreto4lej slerowt etslueg .e|olsraNp ee h g 'ettolueeuq stuoav :sleelS pue lg^tu ,slueg laM cs3dAr Nottvl"l0f n -3Is

eerv lsol alEeauelglo Aeruns lec!Eolocf pelleleo

t

D)fta4

N%mIoNl531

\

stl l,,l

Nffi

s:ldAt Not.t vtf 9:lA-tl-ts