Description

In the first few decades of European settlement this ranged from descriptions by explorers and new settlers, artists' drawings, through to specimens sent to international herbaria and museums. In the late 19th Century, more systematic observations were published and formed the basis of today’s quantitative approaches. The early surveys were haphazard in terms of location, survey method and species coverage with little attempt to co-ordinate the work nationally. As a contribution to the IBP (International Biological Programme), the Conservation Survey of Australia (Specht et al. 1974) lists the major and minor plant communities extracted from the published literature and the unpublished field experience of plant ecologists. These data were incorporated into a committee-based delineation of Australia’s plant communities. The great number of tree species (20 to 140) that coexist in subtropical and tropical plant communities in Australia, from the arid to the humid evaporative zones made the definition of statistically “homogeneous” suites within the vegetation a challenge compared with temperate plant ecology with relatively low numbers of overstorey species per hectare (1 to 10 in number). In consequence a systematic numeric classification system (polythetic-divisive classificatory program TWINSPAN (Hill, 1973)) was used to better define these units for conservation assessment. Complete species lists (several floristic lists could therefore not be included) reported by 705 sources (from the refereed literature, government surveys and theses) for plant communities throughout the continent since the 1890s were compiled and collated into sixteen data segments arranged according to structural formation (Figure 1). These were analyzed using the then CSIRO Division of Computing Research CSIRONet facilities based on the presence or absence of a species in each list to determine objectively-defined plant communities. These communities were then linked to their conservation status . A spatially-represented outcome of this work was published 1995 (Specht et al., 1995).

An extraction of species by location data from published and unpublished papers and reports

The collection was established in 1879 and ceased acquisitions in 1996.

Taxonomic range

Vegetation composition and structural classification at distinct vegetation communities across Australia.

Kingdoms covered include: Plantae.

Geographic range

All of Australia - land

Australian states covered include: All states and Territories.

The western most extent of the collection is: 112.000000°

The eastern most extent of the collection is: 155.000000°

The northern most extent of the collection is: -10.000000°

The southern most extent of the collection is: -55.000000°

Number of specimens in the collection

The estimated number of specimens in the Conservation Atlas Surveys collection is 0.

Click the Records & Statistics tab to access those database records that are available through the atlas.

Usage statistics

Metadata last updated on 2014-08-28 14:33:14.0

Digitised records available through the Atlas

The Conservation Atlas Surveys collection has an estimated 0 specimens.

Looking up... the number of records that can be accessed through the Atlas of Living Australia. Click to view all records for the Conservation Atlas Surveys collection

No records are available for viewing in the ALA.

Images from this collection