<<

similarities with the vegetation of the Central Plateau and Mount Field. The vegetation 772451 boundary between dolerite and quartzite (Mt MOUNT ANNE Bowes Land System 718251) just below the Mt Jurassic dolerite dominates this rugged, exposed, Anne hut is quite dramatic, changing from highland land system which covers areas at Mt sedgeland/heath (718251) to open scrub Anne, Mt Sarah Jane, Mt Mueller and Mt Wedge. dominated by cocci/era (772451). Some of these areas were covered by ice during With increasing altitude and exposure the open the Pleistocene glaciations and all have scree scrub is replaced by open heath and on the slopes that formed through periglacial or rock highest plateaus by bolster moorland and herbfield glacier activity. These slopes are particularly well with islands of closed heath composed of developed on the western side of Mt Anne. acicularis, O. revoluta, scoparia, Eucalyptus vernicosa and Diselma archeri. On Soils in this land system are similar to the dolerite mountain peaks rock scree covers large areas with soils of the Central Plateau (Pemberton 1986) shallow interstitial loam soils. This supports low and Mt Field (Davies 1988) areas with brown to shrubland with some grasses and sedges. yellowish brown clay loam or light clay horizons which are often covered by peat. Minor inliers Recreation and nature conservation are the only of Precambrian quartzite have very different soil land uses. Track erosion is a problem on areas and vegetation associations (see "Plateau on covered by alpine vegetation and on steep slopes quartzite" component). The vegetation of these where concentrated water flow promotes track mountains is markedly different from that of erosion. Frost heave may hamper revegetation of neighbouring quartzitic montane zones and it has disturbed sites and contribute to erosion.

Photo 39

View of Mount Sarah Jane showing the well developed scree slope on the southern side of the peak.

92 LAND SYSTEM MT ANNE 7 7 2 4 5 1 A r e a ( h a ) : 1 3 2 6

ALTITUDINAL RANGE 900-1200 APPROXIMATE ANNUAL RAINFALL (mm) 1500-2000 (m) SITE NO. 106/1000/W 107/1100/W 108/1200/- 109/1200/- 144/1240/- /ALTITUDE(m) /ASPECT (Mt Sarah Jane) TOPOGRAPHY Rugged mountainous terrain with plateau areas Position lower slopes Rocky mud and upper Plateau on quartzite Plateau on dolerite mountain peaks slopes Typical Slope( ) 5-20 20-30 0 0 0-20 Proportion (%) 20 30 10 30 10 GEOLOGY Jurassic dolerite with minor inliers of Precambrian quartzite NATIVE Open-scrub Open-heath Alpine herbfield Islands of closed Open-heath VEGETATION heath surrounded Stucture by bolster Floristic Eucalyptus coccif Richea scoparia Oritesmoorland/ acacularisherbfield Ontes acicularis Association era Nothofagus Pumelea sericea Celmisia saxifraga Richea scoparia Drimys (See cunninghamii Oleana pinifolia Ewartia planchonii Ontes revoluta lanceolata Appendix 1 Eucalyptus venucosa Orites acicularis Aciphylla Diselma archeri Podocarpus for common O. revoluta Drimys procumbens Astelia alpina lawrencii names) ( lanceolata Dracophyllum Eucalyptus Aciphylla selaginoides) Orites Eucalyptus minimum Diplaspis vernicosa Oreobolus procumbens revoluta Richea vernicosa cordifolia Richea acutifolius Coprosma nitida milligani montana sprengelioides Dracochyllum Olearia pinifolia Astelia alpina. Senecio pectinatus minimum Donatia Ontes revoluta Drimys lanceolata Orites (var ochroleuca) novae-zelandiae Epacris Trochocarpa diversifolia Anemone Cyathodes dealbata serpyllifolia cunniinghamii Rubus Epacris crassifolia Microcachrys Archeria gunnianus Orites serpyllifolia Poa Danthcnia so. tetragona Ewartia serpyllifolia SOIL Rocky brown/dark Very dark brown (10 Dark reddish brown (5 Very dark brown (10 Very dark brown (10 YR Surface(A or P brown (10 YR 4/3) YR 2/2) fibrous peat YR 2. 5/2) gravelly YR 2/2) fibrous peat 2/2) to dark brown (10 horizon)Colour loam to clay loam sandy fibrous peat YR 3/3) loam with an (moist) and often with a peat olive brown (2. 5 Y textureSubsoil (or B Rockysurface brown/dark layer Rocky very dark No B horizon Gravelly dark yellowish No4/4) B horizon horizon) colour brown (10 YR 4/3) greyish brown (2. 5 Y brown (10 YR 3/6) clay (mist) and clay loam to light 3/2) silty clay loam loam to light clay texturePrimary Profile clayGradational to fineOrganic: sandy clay Organic Organic Uniform form Depth surface ) 0. 0. 30 0. 10 0. 20 0. 15 horizon(m 10 Typical total >0. 30 0. 80 0. 10 0. 30 0. 15 depth(m) Permeability Moderate Moderate High Moderate High LAND USE Nature conservation, recreation HAZARD Moderate track erosion, track bifurcation, high sheet erosion if burnt