planning for planting in the southern tablelands · planning for planting in the southern...
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![Page 1: Planning for planting in the southern tablelands · Planning for planting in the southern tablelands Murrumbateman Landcare Group 5th July 2018 Text and photos of talk presented by](https://reader033.vdocuments.us/reader033/viewer/2022050514/5f9e87c3e165aa194b6d6483/html5/thumbnails/1.jpg)
Planning for plantingin the southern tablelands
Murrumbateman Landcare Group5th July 2018
Text and photosof talk presented by Sue McIntyre
(CSIRO / Australian National University)
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Why use local species? Better results Maintain regional character Maintain integrity of local gene pools
– conserving biodiversity
Climate-adjusted provenancing Highly modified environments
Exceptions?
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Two main vegetation types in the districtSouthern Tablelands Dry Sclerophyll Forest and Southern Tablelands Grassy Woodland (no trees visible) on the deeper soils and (after Keith 2004)
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Landscape position linked to ecosystem type
Sclerophyll forest (hills, shrubby)Grassy woodlands (lower slopes and flats, grassy)Both are eucalypt dominated
E. rossii
E. macroryhnchaE. polyanthemos
E. dives
E. mellidoraE. blakelyi
E. bridgesiana
E. rubida
E. mannifera
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Landscape position linked to ecosystem type
Sclerophyll forest (hills, shrubby)Grassy woodlands (lower slopes and flats, grassy)Both are eucalypt dominated
Scribbly Gum
Red StringybarkRed Box
Broad-leaf Peppermint
Yellow Box Apple Box
Candlebark
Brittle Gum
Blakely’s Red Gum
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Do you need to plant at all?
Three scenarios :–
YES –Native vegetation +/- entirely lost
NO – Functional diverse vegetation present
RESTRAINED – augmenting what is there
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YES
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NO
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NO
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Restrained planting– respect and nurture what is there
Give time for natural regeneration:- Seed throw distance from established eucalypts- Around existing shrubs- In eroded and low fertility areas- Respect what is already there
Use low intervention planting methods:- Avoid fertilizers- Avoid herbicide treatments- Avoid ripping
Use a naturalistic planting design:- Avoid straight lines- Avoid even spacings- Avoid the hair transplant look
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Tree and shrub restoration in a native grassland with widely scattered trees.Mixture of natural regeneration, direct seeding and tube stock. No ripping, cultivation, fertilizers or ongoing watering(this slide and next).
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A case for Acacias
They have often been historically grazed out by livestock
They provide good resources for wildlife- Seeds for parrots- Pollen for insects- Grubs for cockatoos- Mid-level habitat structure- Different species flower at different times of year
They are a gentle way to restore vegetation productivity- Nitrogen fixation- Fast turnover of litter
Some of them sucker, a very useful trait for persistence.
Landscape position not as clearly defined as for eucalypts
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Acacia dealbata – Silver Wattle Acacia mearnsii – Black WattleFlowers late winter Flowers summer
The ‘bread-and-butter’ wattlesBoth frost-hardy, both sucker, Silver Wattle tolerates waterlogging
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Acacia parramattensis– Green Wattle
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Acacia buxifolia –Box-leaf Wattle
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Acacia genistifolia – Early Wattle
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Acacia gunnii – Ploughshare Wattle
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Acacia rubida– Red-stemmed Wattle local form
Acacia rubida– ‘tree’ form, sold at nurseries
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Acacia rubida – ‘tree’ form
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Acacia implexa – Hickory WattleVery frost sensitive, may only establish on the tops of hills.
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Summary– respect and nurture what is still there
Stop and reflect, watch and wait;
The less degraded the vegetation the greater the caution is needed – use low-impact methods of establishment and local species;
Native-dominated ground layers need great respect as they are irreplaceable;
Some sites need no planting;
Other sites may have elements missing - trees or shrubs;
Matching eucalypts to landscape position and locality is important;
Matching acacias to landscape position +/- importantPay heed to aesthetics and local character of the bush in your district.