Perup Bio-landscape

Posted on Dec 23, 2014


Perup bio-landscapeTerrestialBiodiversity

Priority Bio-landscapes were identified across the region in the 2009 Biodiversity Sub-strategy. A 5 km by 5 km grid was placed across the region and those landscapes that had the highest concentrations of biodiversity value within the region were identified. Those landscapes that were identified as having a combination of high rarity for flora/fauna/communities and vegetation associations were classified as Highest Priority bio-landscapes. Those that were identified as having high rarity for flora/fauna/communities but the vegetation associations within them were not rare were classified as Second Priority Bio-landscapes. The full report can be read here: 2009 Biodiversity Sub-Strategy

The Perup bio-landscape is located to the east of an area located between Manjimup and Bridgetown and is found mainly in the Shire of Boyup Brook and crossing the boundaries of the Blackwood and Warren catchments.

The Greater Kingston National Park and Tone-Perup Nature Reserves are found here. Some clearing has occurred for private farming properties within the biolandscape, particularly in the north eastern corner.

The Tone-Perup Nature Reserve is a highly valuable conservation area. Within the 56,000 ha nature reserve, a 423ha predator proof enclosure (known as the Perup Sanctuary) was constructed to protect the threatened species, the woylie from predators such as foxes and cats. Work on the enclosure began in 2009 with the construction of an 8.5 km fully enclosed electric fence. Work was completed in November 2010, following an 180 man team of volunteers and DPaW staff to muster out any lingering kangaroos, and declared free from cats. 41 woylies were carefully selected and translocated into the reserve. As of 2014, more than 400 woylies were counted, with this number expected to double in the next couple of years (Landscope, 2014).

South of the biolandscape, and still within the nature reserve, is the Perup – Natures Guest house where visitors can enjoy looking for native wildlife such as the numbats, ringtail and brushtail possums, quenda, woylies and chuditch. At dusk, time can be spent in the ‘hide’ looking for timid tammar wallabies and the wildflowers of the eastern jarrah forest can be enjoyed in the early spring.

The Perup River and Tweed River occur within the bio-landscape and provide important natural linkage functions through the cleared properties within the landscape.

Within the bio-landscape 1 endangered flora species has been identified; being Caladenia dorrienii.

There are also 84 endangered and 25 priority fauna populations that have been identified including species such as the Muir’s corella, numbat, chuditch, woylie, Wambenger or brush-tailed Phascogale, forest red-tailed black cockatoo and Baudin’s.

Perup bio-landscape and Climate Change

Projected level of risk due to:

Decreasing rainfall

Best case        HighCircle

Worst case    VeryHighCircle

 

Increasing temperature

Best case       ModerateCircle

Worst case    HighCircle

 

  • where Best Case = MIROC5 and Worst case = CanESM2 at 2090 and RCP8.5; see more here
  • Decreasing rainfall = annual rainfall change as % of initial
  • Where Very High = greater than 25% reduction; High = 20-25% reduction; Moderate = 15-20% (Note: no where in the region is there projected to be less than 15% reduction in rainfall).
  • Increasing temperature = change in maximum summer temperature
  • Where Very High = greater than 4 degree increase (maximum projected being 4.7 degrees within the Region); High = 3-4 degree increase; Moderate = 2.5 – 3 degree increase; Low = 2 – 2.5 degree increase (Note: no where in the region is there projected to be less than a 2 degree increase which although lower than the very high 4 degree increase, will still have significant impacts on the environment).

This analysis is a simplistic way of looking at the potential risk of an asset to projected changes in rainfall and temperature. Assets may respond to climatic changes differently and species may be able to adapt in ways we don’t yet fully understand.

SWCC Strategic Priority

The Perup bio-landscape is identified as a second order priority asset within SWCC’s NRM Strategy under the Terrestrial Biodiversity theme.

Projects 

 

 

Source:

  • 2009 Biodiversity Sub-Strategy for the South West Catchments Council Prepared for the South West Catchments Council by Ecosystem Solutions Pty Ltd 2009.
  • Perup Natures Guesthouse – Fact Sheet available at http://parks.dpaw.wa.gov.au/park/tone-perup
  • Wayne, A.F. (2014) Perup Sanctuary; insuring woylies against extinction. Landscope, Volume 29 Number 3 Autumn 2014.

 

Header and thumbnail images supplied by Wendy Wilkins.

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