Yanchep National Park Management Plan 1989-1999

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There are 7 vegetation associations, these are depicted in Figure 5. Their occurrence is closely related to the type, depth and moisture content of the soil and more specifically, to the proximity of limestone. In general, boundaries between vegetation associations are diffuse rather than sharp. The flora is influenced by a climate of wet, mild winters and hot, dry summers. The Park is close to the northern-most rainfall limit of Jarrah and Tuart woodlands of the south-west and within the transition zone from this vegetation-type to Banksia low woodland and scrub/heath (Beard 1979). The Park's annual mean rainfall is 770 mm with nearly 80 percent falling between May and September, which is 12 percent less than Perth's rainfall (Butcher, 1986). The vegetation associations are as follows: 1. Eucalyptus gomphocephala (tuart) association (Beard 1979 and the 'Tuart Forest' of Speck 1952). This occurs where limestone is close to the surface and consists of E. gomphocephala as the overstorey, at times in association with E. calophylla (marri) and E. marginata (jarrah), with a lower storey of Banksia attenuata, B. menziesii, B. grandis and Allocasuarina fraseriana (sheoak). The understorey commonly has Xanthorrhoea preissii (blackboy) and Macrozamia riedlei (zamia palm). The shrub layer is rich and variable with different species taking dominance. 2. Eucalyptus marginata (jarrah) association (Beard 1979). This association occurs where soils overlying the limestone are deepest. It is only represented in small areas of the Park, but is more extensive in Ridges State Forest. This association consists of an overstorey of E. marginata and occasionally E. calophylla and a lower storey of Banksia species. The understorey differs from the tuart association, with no lime-tolerant plants. 3. Banskia Low Woodland (Beard 1979). This association is more typical of the Jurien vegetation system, described by Beard (1979) as the vegetation of the Spearwood Dune System under reduced rainfall. It consists of Banksia attenuata, B. grandis, B. menziesii and occasionally B. ilicifolia, Allocasuarina fraseriana and Eucalyptus todtiana (pricklybark). 4. Banksia/Eucalyptus/Allocasuarina Woodland. This vegetation type is associated with the deeper soils on limestone and is common in Ridges State Forest. Banksia menziesii, B. grandis, B. attenuata, Allocasuarina fraseriana and Eucalyptus todtiana form a mixed overstorey. The understorey has a diversity of species with Xanthorrhoea preisii, Hibbertia hypericoides and Stirlingia latifolia often dominating. 5. Dryandra - Calothamnus Heath (Beard 1981). This association occurs on limestone ridges. With bare limestone outcrops and shallow yellow/brown sand, the soil is too shallow to support trees. This association is characterised by lime-tolerant plants. It is dominated by Dryandra sessilis (parrot bush) and Calothamnus quadrifidus (one-sided bottlebrush) and can be almost exclusively covered by either species. 24
6. Melaleuca/Dryandra/Acacia Heath. This association is restricted to limestone ridges in the north-west section of Ridges State Forest. Commonly occurring species include Melaleuca aff. scabra, M. huegelii, Grevillea thelemanniana, Acacia rostellifera, and Dodonaea aptera. 7. Melaleuca acerosa Heath. This occurs on the Quindalup soils, which are characterised by calcareous sand. It has been variously described as Melaleuca acerosa low scrub (Speck 1952) and a low dense thicket with characteristic dominants Acacia lasiocarpa and Melaleuca acerosa (Beard 1979). 25
Page 2 and 3: DEPARTMENT OF CONSERVATION AND LAND
Page 4 and 5: TABLE OF CONTENTS PREFACE _________
Page 6 and 7: LIST OF FIGURES Figure 1 Locality M
Page 8 and 9: A GUIDE TO THIS PLAN Overall the pl
Page 10 and 11: • The rehabilitation of eroded an
Page 12 and 13: • Rationalisation of the manageme
Page 14 and 15: an important tourist destination, w
Page 16: Implications for Management 1. Yanc
Page 20 and 21: Today, Yanchep National Park remain
Page 23 and 24: 4. Recreation Area: Within which al
Page 25 and 26: PART C MANAGEMENT OF NATURAL RESOUR
Page 27 and 28: The importance of the caves in the
Page 29 and 30: 7. Investigate alternative names fo
Page 31 and 32: FIGURE 4. 19
Page 33 and 34: 6.0 HYDROLOGY The hydrology of the
Page 35: 2. Continue to encourage a program
Page 40: 7.2.2 YONDERUP LAKE The vegetation
Page 44 and 45: 6. The continued spread of Typha or
Page 46 and 47: TABLE 3 REHABILITATION PRESCRIPTION
Page 48 and 49: Two species, Tarsipes rostratus (Ho
Page 50 and 51: White-naped Honeyeater (Melithreptu
Page 52 and 53: Implications for Management 1. Ther
Page 54 and 55: In the 'Draft Guidelines for Wetlan
Page 56 and 57: 9.3 FACTORS AFFECTING THE QUALITY O
Page 58 and 59: Implications for Management (Furthe
Page 60 and 61: 10.0 PROTECTION 10.1 FIRE Australia
Page 62 and 63: 6. Highest areas of risk of ignitio
Page 64 and 65: 8. To minimise the introduction or
Page 66: TABLE 5 PERCENTAGE OF VEGETATION TY
Page 69 and 70: 8. Promote public education and awa
Page 71 and 72: 10.2 DISEASE The plant disease of m
Page 73 and 74: The impact of the two declared pest
Page 75 and 76: Kikuyu grass is spreading from the
Page 77 and 78: 10.4.2 KOALA FEED PLANTATIONS There
Page 79 and 80: 2 Develop a public education/interp
Page 81 and 82: no fauna survey of the area. The in
Page 83 and 84: 11.2.2 PART OF STATE FOREST NO. 65
Page 85 and 86: Prescriptions 1. Negotiate with the
Page 87 and 88:
SECTION PROGRAM PRIORITY 10. 3 Non-
Page 89:
Much of the recreation area with it
Page 92:
PART D MANAGEMENT FOR VISITORS 13.0
Page 95 and 96:
Overall, the number of visitors ann
Page 97:
14.2 RECREATION AREA MANAGEMENT OBJ
Page 101:
14.3.1 MANAGEMENT SUB-UNITS OF THE
Page 104:
entrance (No. 31); around the ornam
Page 108 and 109:
• The carpark next to the ticket
Page 110 and 111:
3. Provide parking suitable for the
Page 112 and 113:
Management Objective To provide an
Page 114 and 115:
a surprisingly high percentage of "
Page 116 and 117:
4. The building requires considerab
Page 118 and 119:
14.4.3(c) KIOSK BUILDING The draft
Page 120 and 121:
14.4.3(e) HALL The hall was origina
Page 122 and 123:
14.4.4 RECREATION FACILITIES 14.4.4
Page 124 and 125:
8. Design and construct a new koala
Page 126 and 127:
Implications for Management 1. The
Page 128 and 129:
W.A. natives and designed to provid
Page 130 and 131:
assist with the maintenance of picn
Page 132 and 133:
2. The design of the barbecues crea
Page 134 and 135:
The visitor survey showed that 59 p
Page 136 and 137:
- is not environmentally sensitive
Page 138 and 139:
• maximum numbers of users, where
Page 140 and 141:
major repairs carried out by tender
Page 142 and 143:
2. Include in the lease the followi
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- the responsibility for rubbish di
Page 146 and 147:
4. Negotiate with the Yanchep Golf
Page 148 and 149:
2. The pool runs at a loss; managem
Page 150 and 151:
The City of Wanneroo is keen to con
Page 152 and 153:
6. There is insufficient data on th
Page 154 and 155:
There are continual problems with l
Page 156 and 157:
ubbish removal, the Yanchep Inn, Ki
Page 158 and 159:
Management Objective To have a cost
Page 160 and 161:
Implication for Management It is CA
Page 162 and 163:
2. Restrict vehicle entry to the ma
Page 164 and 165:
Caves enlarge by the repeated colla
Page 166 and 167:
structurally safe have so far been
Page 168 and 169:
4. Establish a set of conditions fo
Page 170 and 171:
15.2.2(b) CABARET CAVE Management O
Page 172 and 173:
With the advent of mountain bicycle
Page 174 and 175:
There are a number of management pr
Page 176 and 177:
For tourists, Yanchep National Park
Page 178 and 179:
6. Include in the lease conditions
Page 180 and 181:
18.1 VISITOR INFORMATION FACILITY A
Page 182 and 183:
Prescriptions 1. While the Administ
Page 184 and 185:
21.0 BIBLIOGRAPHY Archer, M. (1972)
Page 186 and 187:
Drescher, 0., personal communicatio
Page 188 and 189:
Muir, B.A. (1985) Observations of t
Page 190:
Western Australian Tourism Commissi
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Yanchep National Park Management Plan 1989-1999

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