1. 0 introduction

Yüklə 1,99 Mb.
Pdf görüntüsü
ölçüsü1,99 Mb.
1   2   3   4   5




The primary aim of road management is the creation and maintenance of a safe, 

efficient road system. However, the following management procedures are 

recommended and should be adopted. The following section provides management 

recommendations that will assist in retaining and enhancing roadside conservation 

value. These guidelines are taken from the Roadside Conservation Committee’s 

Roadside Manual and the Roadside Handbook.  


The Executive Officer of the Roadside Conservation Committee is also available to 

assist on all roadside conservation matters, and can be contacted on (08) 9334 0423.  


High Conservation Value Roadsides 

Management Goal 


Maintain and enhance the native plant 


Management Guidelines 


Minimal disturbance to existing vegetation.


Disturbance leads to weed invasion, which 

downgrades the conservation value, and increases 

the fire threat. 



Medium Conservation Value Roadsides 

Management Goal



Maintain native vegetation wherever possible, 

and encourage its regeneration

Management Guidelines



Minimise disturbance to existing vegetation.





Low Conservation Value Roadsides 

Management Goal



Retain remnant trees and shrubs and 

encourage their regeneration.  

Encourage revegetation projects using 

indigenous plants. 

Management Guidelines



Minimise soil disturbance to reduce weed 

invasion. Encourage revegetation projects by 

adjacent landholders. 


A survey of the roadside conservation values in the Shire of Dalwallinu and roadside management guidelines 


Minimal disturbance can be achieved by: 

Adopting a road design that occupies the minimum space; 

Diverting the line of a table drain to avoid disturbing valuable flora; 

Pruning branches, rather than removing the whole tree or shrub; 

Not dumping spoil on areas of native flora

Observing dieback control measures as required; 

Apply the Fire Threat Assessment (Roadside Manual) before burning roadside 


Use methods other than fuel reduction burns to reduce fire threat; if roadside burning 

must be undertaken, incorporate it into a district fire management program; 

Encourage adjacent landholders to set back fences to allow roadside vegetation to 


Encourage adjacent landholders to plant windbreaks or farm tree lots adjacent to 

roadside vegetation to create a denser windbreak or shelterbelt; 

Encourage revegetation projects by adjacent landholders. 


7.1  Environmental Guidelines 

An Environmental Guidelines has been developed through collaboration with Main 

Roads Western Australia, the Western Australian Local Government Association and the 

Roadside Conservation Committee. It is anticipated that this document will be accepted 

as an industry standard for all working or interested in roadside conservation. This 

document provides defined parameters for all roadside management works and also 

provides the local community with an overview of management practices that will ensure 

the sustainability of native roadside vegetation. Please contact the Roadside 

Conservation Committee on 9334 0423 for further information. 


7.2  Tree Roads 

Tree roads are defined as those roadsides with a sufficient density of mature trees to 

create an attractive tunnel effect. Besides the aesthetic benefits, these areas also 

provide valuable habitat for birds and other arboreal fauna. Since mature trees are slow 

growing and hard to replace, care should be taken to conserve these avenues wherever 

possible.  The following points should be considered when working on tree roads:  

prune offending branches rather than remove the whole tree; 

cut branches off close to limb or tree trunk

divert line of table drain to avoid disturbing tree roots; 

import fill to build up formation, rather than using side-borrow from roadside; 

when using herbicide for weed control on the roadside do not use a soil residual 

type, such as Simazine or Atrazine.  Eucalypts are especially sensitive to these; 

A survey of the roadside conservation values in the Shire of Dalwallinu and roadside management guidelines 




encourage the adjoining landholders to plant shelter belts on their property that will 

complement the roadside vegetation.



7.3  Special Environment Areas 

A Special Environmental Area is a section of roadside, which has such significance that 

it requires special protection.  Reasons for establishing Special Environmental Areas can 


Protection of rare or threatened species of native plants; 

Protection of sites that have other high conservation, scientific or aesthetic values; 

Protection of Aboriginal or European cultural sites. 


Special Environmental Areas can be delineated by the use of site markers. See Figures 

9 and 10 for design and placement of SEA markers. Workers who come across a 

‘Special Environmental Area’ marker in the field should not disturb the area between the 

markers unless specifically instructed.  If in doubt, the Supervisor, Shire Engineer or 

CEO should be contacted. 


Western Power and West Net rail also have systems for marking sites near power or rail 

lines.  Examples of these are seen in the figure below. 





















Figure 12 - Special Environmental Area site marker. 











A survey of the roadside conservation values in the Shire of Dalwallinu and roadside management guidelines 


7.4  Special Environmental Area Register 


To ensure that knowledge of rare flora and other sites does not get lost due, perhaps, to 

staff changes, a Local Authority should establish a Special Environmental Area Register. 

This should outline any special treatment, which the site should receive, and be 

consulted prior to any work being initiated in the area. 


The Special Environmental Area Register should be consulted by the appropriate person 

prior to starting work on any particular road, to ensure that inadvertent damage does not 

occur.  All Special Environment Area sites should be marked on the Shire map, which 

records Roadside Conservation Value  


Local Government is encouraged to permanently mark Special Environmental Areas to 

prevent inadvertent damage to the rare flora or other values being protected. Markers of 

a uniform shape and colour will make recognition easier for other authorities using road 



Figure 13 - Marking Special Environment Area (SEA) sites in the field. In this case, a 

declared rare flora (DRF) site has been marked. 


When notified of a population needing marking, the Local Authority should contact the 

appropriate Department of Conservation and Land Management Regional or District 

office for assistance to ensure the exact site location and correct positioning of marker 



Special Environment Area 

A survey of the roadside conservation values in the Shire of Dalwallinu and roadside management guidelines 





8.1  Planning 

The RCC is able to provide good models of Roadside Management Plans and 

encourages all shires to adopt this practice of planning for roadside conservation. The 

following actions greatly enhance likelihood of a plan that changes behaviour and results 

in on-ground actions: 




encourage ongoing community involvement and 

commitment by establishing a local Roadside Advisory Committee or working group 

within the Shire Environmental Committee; 



maintain roadside values by developing environmental 

specifications for inclusion in all tender documents or work practices



use of innovative and pertinent material can increase 

community understanding of roadside values; 


promote local roadside planning initiatives and gain acceptance and 

understanding by involving shire staff, contractors, utility provider staff and the 

community in workshops, seminars or training days. The Roadside Conservation 

Committee can provide this training. 


Training develops recognition and understanding of roadside values and highlights best 

work practices. Workshops are developed to ensure that local issues and environments 

are dealt with and they include site visits to high conservation remnants, current projects 

and works. 


The objective of all roadside management planning should be to:  




- native 


rare or threatened flora or fauna 

cultural and heritage values 

community assets from fire 




safe function of the road 

- native 



fauna habitats and corridors 

visual amenity and landscape 


- water 




- land 


spread of weeds and vermin 

spread of soil borne pathogens 

risk and impact of fire 

disturbance during installation and 

maintenance of service assets 




indigenous vegetation communities 

fauna habitats and corridors 


A survey of the roadside conservation values in the Shire of Dalwallinu and roadside management guidelines 



8.2  Strategies 

The development of a strategy enables potentially competing uses to coexist and 

ensures that roadsides are managed in a coordinated approach. When producing 

regional strategies the RCC suggests that: 

Organisational support from local government is essential from the outset; 

Strategies should take no longer that 12 months to produce (including a period for 

community comment); 

Communities need to be provided with background information to make formal 



Management strategies should be produced to address local issues, rather than be to a 

standard format. Issues can be categorised as: 



- Fire 


Installation and maintenance of 


Road construction and maintenance 

Stockpile and dumpsite management 

- Vegetation 


Vehicle and machinery activity 

- Water 




  Cultural and Recreational 

Cultural and heritage values 

- Horse 


Visual amenity and landscape values 

- Wayside 




- Apiculture 

- Insect 


- Pest 


Ploughing, cultivating or grading 

Revegetation and site rehabilitation 

- Weeds



Protecting and conserving remnant 

native vegetation 

Rare, threatened or significant flora 

and fauna 

Regeneration of native plant 


Roadside marking of special 

environmental areas 

Unused road reserves 

- Wetlands 

- Wildlife 


- Wildlife 




A survey of the roadside conservation values in the Shire of Dalwallinu and roadside management guidelines 


8.3  Roadside Action Plans 

A Roadside Action Plan is prepared for an individual road and contains a works 

program that will enable conservation values and other road uses to be managed 



Roadside Action Plans are based on the guidelines that are produced as part of the 

roadside strategy. 


The RCC suggests that Roadside Action Plans be: 

short term documents (to be reviewed within 2 years); 

prepared on a need basis; 

prepared after consultation with major stakeholders; 

a maximum of 2 pages per road; 

names a person or agency responsible for implementing the management 





Roadside Action Plans may, for example, aim to eradicate 

invasive weeds such as African Lovegrass from roadsides. 

Weed overlays may be helpful in identifying strategic locations. 

A survey of the roadside conservation values in the Shire of Dalwallinu and roadside management guidelines 




Beeston, G., Mlodawski, G., Saunders, A and True, D. (1993, unpub.). Remnant 

Vegetation Inventory in the Southern Agricultural Areas of Western Australia

Western Australian Department of Agriculture, South Perth.  


Department of Agriculture WA, Client and Resource Information System (2004), 

Land-use Zones in Western Australia, February 2004. 


Environment Australia. (2001), National Objectives and Targets for Biodiversity 

Conservation 2001-2005. Environment Australia, Canberra, Australia. 


Jackson, K A (2002) Assessing Roadsides A Guide to Rating Conservation Value

Roadside Conservation Committee, Kensington, Western Australia 


Lamont, D.A. and Blyth, J.D. (1995). Roadside corridors and community networks, pp 

425-35. In Nature Conservation 4: The Role of Networks, ed by Saunders, D.A., 

Craig J.L., and Mattiske E.M. Surrey Beatty & Sons, 1995. 


Lamont D A  (1998) Western Australian Roadside Handbook, Environmental 

guidelines for road construction and maintenance workers.  Roadside Conservation 

Committee, Kensington, Western Australia.  


Lamont D A and Atkins K  (2000) Guidelines for Managing Special Environmental 

Areas in Transport Corridors.  Roadside Conservation Committee, Kensington, 

Western Australia. 


Platt, S.J. and Lowe, K.W., (2002). Biodiversity Action Planning: Action planning for 

native biodiversity at multiple scales – catchment, bioregional, landscape, local. 

Department of Natural Resources and Environment, Melbourne. 


Roadside Conservation Committee. (1990). Roadside Manual Roadside 

Conservation Committee, Como WA 


Shepherd, D. P., Beeston, G.R. and Hopkins, A. J. M. (2001). Native Vegetation in 

Western Australia. Technical Report 249. Department of Agriculture, Western 

Australia, South Perth 


Shire of Dalwallinu (2004) 




A survey of the roadside conservation values in the Shire of Dalwallinu and roadside management guidelines 


















A survey of the roadside conservation values in the Shire of Dalwallinu and roadside management guidelines 




Definitions of Remnant Vegetation Types, Beeston et al (1993). 


Vegetation classed as "remnant vegetation" has one or more of the following characteristics: 


* Most closely reflects the natural state of vegetation for a given area. 

* Has an intact understorey (if forest or woodland). 

* Has minimal disturbance by agents of human activity. 



Vegetation classed as "modified vegetation" has one or more of the following characteristics: 


* Degraded understorey (i.e. reduction in the number of native species, includes weeds). 

* Obvious human disturbance, i.e. clearing, mining, grazing, weeds. 

* Affected by salt. 

* Narrow corridors of vegetation (usually along roads and railway lines or windbreaks), which are 

more likely to be affected by edge effects. 



Vegetation classed as "scattered vegetation" has: 


* No understorey 

* Parkland cleared i.e. scattered single trees. 

* No significant signs or chance of regeneration.  

A survey of the roadside conservation values in the Shire of Dalwallinu and roadside management guidelines 



















A survey of the roadside conservation values in the Shire of Dalwallinu and roadside management guidelines 




Standard Survey Sheet 



A survey of the roadside conservation values in the Shire of Dalwallinu and roadside management guidelines 
















A survey of the roadside conservation values in the Shire of Dalwallinu and roadside management guidelines 



A survey of the roadside conservation values in the Shire of Dalwallinu and roadside management guidelines 






















A survey of the roadside conservation values in the Shire of Dalwallinu and roadside management guidelines 


Native Plant species in the Shire of Dalwallinu 


Note – Not a fully comprehensive list. 

* indicates weed species. 


Acacia acanthoclada subsp. acanthoclada 

Acacia aciphylla 

Acacia acuaria 

Acacia acuminata 

Acacia acuminata subsp. acuminata ms 

Acacia acuminata subsp. burkittii ms 

Acacia acutata 

Acacia ancistrophylla var. ancistrophylla 

Acacia ancistrophylla var. lissophylla 

Acacia andrewsii 

Acacia anthochaera 

Acacia ashbyae 

Acacia assimilis subsp. assimilis 

Acacia beauverdiana 

Acacia bidentata 

Acacia brumalis 

Acacia chrysella 

Acacia colletioides 

Acacia congesta subsp. congesta ms 

Acacia consanguinea ms 

Acacia coolgardiensis subsp. coolgardiensis 

Acacia coolgardiensis subsp. effusa 

Acacia coolgardiensis subsp. latior 

Acacia costata 

Acacia cylindrica P3 

Acacia daviesioides 

Acacia deficiens ms 

Acacia densiflora 

Acacia dielsii 

Acacia dissona var. indoloria P3 

Acacia duriuscula 

Acacia enervia 

Acacia enervia subsp. explicata 

Acacia eremaea 

Acacia eremophila var. eremophila 

Acacia eremophila var. variabilis P3 

Acacia erinacea 

Acacia erioclada 

Acacia fragilis 

Acacia gibbosa 

Acacia glutinosissima 

Acacia graniticola ms 

Acacia hemiteles 

Acacia heteroneura var. jutsonii 

Acacia heteroneura var. petila 

Acacia heteroneura var. prolixa 

Acacia inceana subsp. conformis P1 

Acacia inceana subsp. latifolia ms 

Acacia isoneura ms 

Acacia isoneura subsp. isoneura ms P3  

Acacia jacksonioides 

Acacia jennerae 

Acacia jibberdingensis 

Acacia kalgoorliensis P3 

Acacia kochii 

Acacia lasiocalyx 

Yüklə 1,99 Mb.

Dostları ilə paylaş:
1   2   3   4   5

Verilənlər bazası müəlliflik hüququ ilə müdafiə olunur ©azkurs.org 2020
rəhbərliyinə müraciət

    Ana səhifə