Remnant Bushland

Remnant Bushland

Land clearing, primarily for agriculture, has arguably had the greatest impact on species viability in the Wheatbelt region. Greater than 70% of the native vegetation of the Wheatbelt NRM region has been cleared since European settlement and an average of over 2700 hectares have been approved for clearing per year since 2010 (Department of Environmental Regulation).

Land clearing, primarily for agriculture, has arguably had the greatest impact on species viability in the Wheatbelt region. Greater than 70% of the native vegetation of the Wheatbelt NRM region has been cleared since European settlement and an average of over 2700 hectares have been approved for clearing per year since 2010 (Department of Environmental Regulation). The extent and composition of our native vegetation can also be variously effected by fire, secondary salinity and climate change. As we collate data will we be increasingly able to comment on whether the area of perennial vegetation cover is increasing or decreasing across the region.

The data underlying the bushland TPC was derived from the 2007 Department of Agriculture and Food Native Vegetation Extent spatial dataset. With the exception of the Great Western Woodlands which are virtually uncleared, every sub-region of the Wheatbelt NRM region falls well below the threshold of 30% land cover. This threshold has been identified in the literature on biodiversity conservation below which species numbers rapidly decline. Our challenge is to manage the region to improve species viability by increasing perennial landcover to exceed this threshold. About 13% of our remaining native vegetation is protected in crown reserves and under freehold covenants and non-binding agreements while revegetation efforts on freehold land continues. In these ways we can protect, enhance, enlarge and connect our remaining bushland.

Reserves

These data show the area of remnant vegetation across the whole Wheatbelt NRM region that is protected under three categories; 1. Crown Reserve; 2. Conservation or carbon covenants - these are parcels of vegetation on free-hold land that are protected under a legally binding agreement between the landholder and an authorised body/covenant scheme provdier such as DPaW or DAFWA ; 3. Non-binding conservation covenants - these are parcels of vegetation on free-hold land that are protected through a non-binding agreements between the landholder and another party that facilitates the preservation of the land such as DPaW or the Humane Society.

Data sources: 1. Landgate, 2. Department of Agriculture and Food Western Australia, 3. Humane Society Wildlife Land Trust, . 3Department of Parks and Wildlife Land for Wildlife, 4. DPaW Covenants.

Disclaimers: The area of remnant vegetation under covenants is likley to be underestimated.

Revegetation

The number of native tree seedlings sold from local Nurseries and the area of revegetation planted during 2016 in the Wheatbelt NRM region.

Data sources: Kalannie Tree Supplies, Arinya Plants, Blythe Tree Farm, WA Farm Trees, Chatfields, Wongan Trees, Kokardine, Westgrow, Greening Australia, Wheatbelt NRM Inc.

Disclaimers: Every effort has been made to collate a comprehensive list of organisations who contribute to revegetation in the region however, these data are likely to be an underestimate of the actual revegetation efforts during 2016. The area of revegetation is calculated from real values supplied by various organisations but does not included private (unsupported) landholder revegetation efforts nor does it give an indication of revegetation success.

Mining

These data show the combined number of operating and proposed mines by sub-region across the Wheatbelt NRM region. The values do not include mines that are in other stages of development.

Data source: Data sourced from Department of Mines and Petroleum MINEDEX (http://www.dmp.wa.gov.au/3970.aspx) website in August 2015 and September 2016. 

Disclaimers: The data gives no indication of the area of remnant vegetation cleared nor rehabilitated for the purposes of the mining activity.

Clearing

These data show the cumulative area over which clearing permits were granted (for various purposes) by the DER in 2016 in the Wheatbelt NRM region.

Data sources: Department of Environmental Regulation Clearing Permit system downloaded from https://cps.der.wa.gov.au/main.html in September 2016.

Disclaimers: Data current as of September 2016 and includes only permits granted but does not indicate if the clearing has actually occurred.

 

Fire

These data represent the area of remnant vegetation burnt in the Wheatbelt NRM region during the 2015/16 fire season.

Data source: Department of Parks and Wildlife

Disclaimers: The data does not indicate net loss or gain of vegetation as a result of fire.

Climate Change

The value represents the average climate anomaly for 2015 (i.e. how far the annual mean deviates from the long-term mean of 1961-1990) calculated from sites in the Bureau of Metrology’s climate change site network.

Data source: Bureau of Meteorology 2016

Disclaimers: Average annual rainfall and maximum temperature isolines have been simplified.

Stay Connected

Subscribe to our updates

Keep up to date on current events, funding opportunities and NRM in the Wheatbelt.

Left Column
Right Column