1. INTRODUCTION
The Biological Survey of South Australia, established under the auspices of the Biological Survey
Coordinating Committee, is an ongoing series of systematic surveys conducted across the state which
aims to provide a broad baseline inventory of the state’s flora and fauna. These surveys are based on
relocatable and repeatable sites. In SA site based (quadrat) vegetation surveys are conducted in the
pastoral and agricultural regions (refer to Map 1). The surveys within the pastoral region are undertaken
by the Pastoral Management Branch and the Biological Survey and Research Section, both from the
Department of Environment and Natural Resources (DENR). Both the GAR Unit, DHUD, and the Biological
Survey and Research Section, DENR, conduct surveys within the agricultural region.
Other vegetation surveys undertaken by government agencies include roadside vegetation, fuel sampling,
rare and threatened species populations, heritage agreement assessments, grazing impact assessment,
weed distribution assessment and post-fire regeneration monitoring.
Site based (quadrat) vegetation surveys, following the Biological Survey methodology, are conducted to
collect information on the presence of plant species, the cover abundance of species present, the
structural composition of the vegetation, the physical environment, and the presence/absence of
disturbances. Information from these surveys is used by Federal, State and Local governments in a range
of activities such as environmental impact assessment, conservation and wilderness assessment, regional
planning, fire and weed control, National Forest Inventory, coastal management and revegetation
programs. It is also used by a number of non-government organisations including Landcare groups,
research and academic institutions, and private consultants.
In 1982 the SA government implemented the Environmental Data Base of SA (EDBSA), to store both
spatial and textual environmental data and allow easy access and manipulation. This data is held and
maintained under joint custodianship by DENR and DHUD. Information from the EDBSA is used to assist
in the decision making process in areas of planning and environmental management. The GAR Unit
maintains the spatial component of the EDBSA accessing this database using the Environmental Systems
Research Institute's (ESRI) Geographic Information System (GIS) Arc/Info software. Biological textual data
stored in the database is maintained by the joint custodians, Biological Survey and Research Section
(DENR) and the GAR Unit, with programming support provided by the Data Support Unit, DHUD. Both
the GAR Unit and the Biological Survey and Research Section also oversee acquisition of environmental
data for the EDBSA through the Biological Survey of SA and associated processes. The database currently
has information for over 12,000 vegetation sites.
Two committees have been established to assist in the coordination of input of biological data. These are
the Biological Survey Coordinating Committee and Biological Survey Users Group. The former deals with
policy and planning issues while the latter oversees the survey methodology, refining and clarifying
techniques. Updates of methodology from the Users Group will be forwarded to Councils and consultants
when necessary. A third group, the Vegetation Mapping and Analysis Working Group, provides a forum
for determining vegetation mapping standards.
When planning a survey, existing information from the EDBSA can assist in the design, provide
background and help clarify the specific aims and outcomes of the study. Prior to commencing a survey,
or in the initial stages of project planning, contact the GAR Unit to discuss what existing data may be
helpful and what services the Unit can offer. A standard series of base maps showing cadastre, landcover,
road access, Heritage Agreement areas, NPWS reserves, previous surveys and infrastructure are available
on paper and mylar. Drainage and topography are also available for some areas. For a full list of the
services the GAR Unit can provide, throughout the survey process, see Table 1. Following field
acquisition, data from the new surveys and projects should be entered into the EDBSA, thus adding to the
State wide information.
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GUIDE TO A NATIVE VEGETATION SURVEY
Section 1
tk Vegetation Guide 1 3/6/98 9:25 AM Page 1