The primary aim of road management is the creation and maintenance of a safe,
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
The Executive Officer of the Roadside Conservation Committee is also available to
High Conservation Value Roadsides
Maintain and enhance the native plant
Minimal disturbance to existing vegetation.
Disturbance leads to weed invasion, which
downgrades the conservation value, and increases
the fire threat.
Medium Conservation Value Roadsides
and encourage its regeneration
Minimise disturbance to existing vegetation.
Retain remnant trees and shrubs and
Encourage revegetation projects using
Minimise soil disturbance to reduce weed
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
Encourage adjacent landholders to set back fences to allow roadside vegetation to
Encourage adjacent landholders to plant windbreaks or farm tree lots adjacent to
Encourage revegetation projects by adjacent landholders.
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
encourage the adjoining landholders to plant shelter belts on their property that will
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
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
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
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
office for assistance to ensure the exact site location and correct positioning of marker
Special Environment Area
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
are dealt with and they include site visits to high conservation remnants, current projects
The objective of all roadside management planning should be to:
rare or threatened flora or fauna
cultural and heritage values
community assets from fire
safe function of the road
fauna habitats and corridors
visual amenity and landscape
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
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
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
Installation and maintenance of
Road construction and maintenance
Stockpile and dumpsite management
Vehicle and machinery activity
Cultural and Recreational
Cultural and heritage values
Visual amenity and landscape values
Ploughing, cultivating or grading
Revegetation and site rehabilitation
Protecting and conserving remnant
Rare, threatened or significant flora
Regeneration of native plant
Roadside marking of special
Unused road reserves
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
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.
Beeston, G., Mlodawski, G., Saunders, A and True, D. (1993, unpub.). Remnant
Western Australian Department of Agriculture, South Perth.
Department of Agriculture WA, Client and Resource Information System (2004),
Environment Australia. (2001), National Objectives and Targets for Biodiversity
Jackson, K A (2002) Assessing Roadsides A Guide to Rating Conservation Value,
Lamont, D.A. and Blyth, J.D. (1995). Roadside corridors and community networks, pp
Craig J.L., and Mattiske E.M. Surrey Beatty & Sons, 1995.
Lamont D A (1998) Western Australian Roadside Handbook, Environmental
Committee, Kensington, Western Australia.
Lamont D A and Atkins K (2000) Guidelines for Managing Special Environmental
Platt, S.J. and Lowe, K.W., (2002). Biodiversity Action Planning: Action planning for
Department of Natural Resources and Environment, Melbourne.
Roadside Conservation Committee. (1990). Roadside Manual Roadside
Shepherd, D. P., Beeston, G.R. and Hopkins, A. J. M. (2001). Native Vegetation in
Australia, South Perth
Shire of Dalwallinu (2004)
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.
Standard Survey Sheet
Native Plant species in the Shire of Dalwallinu
Note – Not a fully comprehensive list.
Acacia acanthoclada subsp. acanthoclada
Acacia acuminata subsp. acuminata ms
Acacia acuminata subsp. burkittii ms
Acacia ancistrophylla var. ancistrophylla
Acacia ancistrophylla var. lissophylla
Acacia assimilis subsp. assimilis
Acacia congesta subsp. congesta ms
Acacia consanguinea ms
Acacia coolgardiensis subsp. coolgardiensis
Acacia coolgardiensis subsp. effusa
Acacia coolgardiensis subsp. latior
Acacia cylindrica P3
Acacia deficiens ms
Acacia dissona var. indoloria P3
Acacia enervia subsp. explicata
Acacia eremophila var. eremophila
Acacia eremophila var. variabilis P3
Acacia graniticola ms
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 kalgoorliensis P3