Native Vegetation Extent in South West WA IBRA Sub-Regions 2024

DWER-146 is a polygon dataset representing remnants of original pre-1750 vegetation in five IBRA sub-regions of South West Western Australia as of 2024. The Department of Water and Environmental Regulation created it by interpreting current and historical high-resolution satellite imagery from 1953 onward. Mapped vegetation is classified as remnant, remnant regrowth above 20% cover, and salt affected/tolerant.

Use Cases

• Mapping remnant native vegetation extent based on polygon data for conservation planning.
• Analyzing vegetation regrowth patterns based on the 'remnant regrowth above 20% cover' classification.
• Studying salt-affected landscapes using the 'salt affected/tolerant' vegetation category.
• Conducting historical land cover change analysis based on imagery from 1953 to the present.

Strengths

• Polygons represent vegetation across five IBRA sub-regions: Katanning, Merredin, Western Mallee, Perth, Dandaragan Plateau.
• Data interpretation uses a long time series of high-resolution satellite imagery from 1953 to the present.
• Vegetation is classified into three distinct categories: remnant, remnant regrowth above 20% cover, and salt affected/tolerant.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic bias inherent to the specific IBRA sub-regions covered.

Provenance

Source

Department of Water and Environmental Regulation

Collection Method

Interpreted from current and historical high-resolution satellite imagery sourced from State Government repositories and commercial products.

Time Range

Pre-1750 baseline representation, with interpretation imagery from 1953 to present.

Freshness

Last updated 2026-06-12 00:02:39.504410; freshness should be verified.

Geography

Five IBRA sub-regions in South West Western Australia: Katanning, Merredin, Western Mallee, Perth, Dandaragan Plateau, and portions of Northern Jarrah Forest.