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Reynard (Rd)

A study of the land in the Catchment of Gippsland Lakes - Vol 2 - land system Reynard- geoArea: 43 sq. km (0.2%)

Undulating to domed mountain peaks and ridges at very high elevations, comparable with those of Hotham land system, have been mapped as Reynard land system. These broad, concave slopes occur on resistant rocks such as quartzites of the Carboniferous Snowy Plains Formation and the Wellington Rhyolites. The mountain peaks are usually treeless. In addition, radially-oriented, treeless corridors, normal to contour, have formed from concentrated movement of low-temperature snowmelt. On sedimentary rocks these corridors are often diverted laterally by rock structure. Rock outcrop and peat bogs are common, and some solifluction lobes occur.

Resistant parent rock, low temperatures and high rainfall combine to produce soils which are relatively shallow, friable and acidic, with very high concentrations of organic matter in the topsoil and with little textural change down the profile. In spite of excellent infiltration characteristics, significant surface run-off can occur when the subsoil is frozen.

A study of the land in the Catchment of Gippsland Lakes - Vol 2 - land system Reynard- image
Gentle slopes of component 2 with a mixture of shrubs, grasses and herbs
Woodlands, often shrubby, grow on the slopes, domes and rocky crests. Tussock grasslands and open heath occur at the higher elevations, in the more exposed positions and on the treeless corridors radiating downslope. Peat bogs are found on sites with poor drainage.

CLIMATE
Rainfall, mean (mm)
Temperature, mean (C)
Seasonal growth limitations

    Annual 900 - 1600; lowest January or February (70 - 100), highest August or September (150 - 180)

    Annual 4 - 8; lowest July (-2 - 0), highest February (11 - 13)
    Temperature <10C (av.): April - October
    Rainfall < potential evapotranspiration: February; frequent winter snow
GEOLOGY
Age, lithology

    Resistant rocks, such as quartzites of the
    Carboniferous Snowy Plains Formation and parts of the Devonian Wellington Rhyolites
PHYSIOGRAPHY
Landscape
Elevation range (m)
Relative relief (m)
Drainage pattern
Drainage density (km/km2)

    Broad convex slopes and undulating to domed mountain peaks and ridges

    1360 - 1700
    100 - 260
    Radial
    0.9
PRESENT LAND USE
    Uncleared: summer bush grazing of cattle; apiculture (limited); recreation — bushwalking, skiing

A study of the land in the Catchment of Gippsland Lakes - Vol 2 - land system Reynard- csA study of the land in the Catchment of Gippsland Lakes - Vol 2 - land system Reynard- graph

LAND COMPONENT
Percentage of land system
Diagnostic features
1
60
Domes and wooded slopes with
treeless corridors radiating
down slope
2
20
Treeless slopes and saddles
3
10
Rocky crests
4
10
Structurally controlled soaks and
peat bogs, often drained by small
streams
PHYSIOGRAPHY
Slope %, typical and (range)
Slope shape
5 - 10, (0 - 15)
Convex
5 - 10, (0 - 15)
Convex
Variable, (0 - 10)
Convex
<1, (0 - 2)
Concave
SOIL
Parent material
Quartzite and rhyolite
Alluvium
Description
Shallow profiles with friable black or very dark, organic sandy loam to sandy clay loam, merging into dark brown or dark greyish brown sandy loam to sandy clay loam. May be stony at depth
Shallow black peat or muck
over mineral soil
Classification
Alpine Humus Soils/Brown Earths
Um6.23, Um5.51, Gn2.41
Humic Gleys, Acid Peats
-
Surface texture
Sandy loam to sandy clay loam
-
Surface consistence
Soft to slightly hard
-
Depth (m)
0.3 - 0.9
>2.0
Nutrient status
Low to moderate
Very low
Available soil water capacity
Moderate to high
Very high
Perviousness to water
Moderate to rapid
Moderate
Drainage
Good
Very poor
Exposed stone (%)
Variable; 0 - 20
<60
Sampled profile number
-
-
-
-
NATIVE VEGETATION
Structure of vegetation and
characteristic species of
dominant stratum
(+ Predominant species)
Woodland I:
E. pauciflora+
Treeless slopes and domes a mosaic of tussock grassland with Poa spp. and open heath with Oxylobium alpestre+ and Hovea longifolia+
Tussock grassland:
Poa spp., Celmisia asteliifolia
Open heath:
O. alpestre, H. longifolia
Shrubby woodland I:
E. pauciflora
Open heath: O. alpestre, H. longifolia Minor tussock grassland: Poa spp.
Bog:
Baeckea gunniana+, Calorophus lateriflorus+, Sphagnum sp.+

    Disturbance
    Affected process and trend
    Primary resultant deterioration
    Casual activities
    Primary off-site process
    Form
    Susceptibility of components
    Incidence with components
    Alteration of vegetation:


    — reduction in leaf area, rooting depth and/or perenniality


    — reduction in density of tree roots
    Reduced transpiration,
    resulting in:

    a) increased deep
    percolation

    b) decreased fog drip

    c) increased rate of snow
    melt


    d) increased depth of
    soil freezing



    Nutrient loss


    -

    -



    Solifluction



    Not determined


    -

    -



    1; low



    Not determined


    -

    -



    Not determined



    Removal of trees


    Removal of trees

    Removal of trees



    Removal of trees



    Increased movement of water to groundwater; increased base-flow of streams

    Reduced base flow of steams

    Increased spring and decreased summer stream flow

    -

    Increased exposure of surface soil
    Increased overland flow and soil detachment

    Increased frost heave and soil detachment
    Sheet and rill erosion


    Wind sheet and rill erosion
    1,2,3; low


    1,2,3; moderate
    Not determined


    Not determined
    Clearing, logging, burning, overgrazing, road building and other earth-moving activities, trafficking by stock and vehicles.
    Increased flash flows and sediment load
    Increased flash flows
    and sediment load
    Increased physical pressure on soil
    Increased compaction

    With


    Reduced infiltration
    Structure decline



    Sheet and rill erosion
    1,2,3; moderate
    4; high


    1,2,3; low
    Not determined



    Not determined
    Increased trafficking overgrazing, export of organic matter

    As for sheet and rill
    erosion above
    -



    Increased flash flows
    Increased soil disruption
    Increased soil break-up
    Gully erosion
    1,2,3; moderate
    Not determined
    As for sheet and rill
    erosion above
    Increased sediment load.
    Comments: No observations of deterioration. Regeneration of vegetative cover is slow and difficult because of the unfavourable climate
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