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Walk: Around the back of St Ives Showground

sheldon forest

Registration essential (see above)

Date: Sunday 23 May
Time: 8.45 for a 9 am start
Length: 3 km, about 2 hours
Grade: moderate
Meet: Caleys Pavilion, Ku-ring-gai Wildflower Garden (we're meeting here because there is Chemical Clean Out at St Ives Showground)
Bring: water, walking shoes, hat, sunscreen, mug (we will have a cuppa and cake at the Showground fire trailer before returning to Caleys Pavilion)
Leader: Mark Schuster (Bushfire Technical Officer, Ku-ring-gai Council)
Contact: Beverley Gwatkin (0414 795 252)
Limit: 20 walkers

We will walk along firetrails to examine aspects of fire management:

  • Fire and the environment (ecological and evolutionary needs)
  • Fire ‘taxonomy’
  • Bushfires (wildfires):
    • short-run fires – where fuel is the primary driver
    • landscape-scale fires – where fuel and weather are the drivers
    • mega-fires (canopy) – where weather is the primary driver
  • Planned (prescribed) burning:
    • hazard reduction focus
    • ecological (ecoburn) focus
    • the BIG question – can fire managers align both the need for asset protection (i.e. fuel reduction) with ecological needs for plant germination and animal needs
  • Asset protection:
    • breaking both vertical and horizontal connectivity of fuel layers, i.e. preventing fuel laddering
    • BAL ratings
    • APZ widths
  • Return intervals – fuel load monitoring (overall fuel hazard):
    • show the method based on layers per % cover per % dead material
    • fuel accumulation rate – post-fire only takes 3 to 5 years until can carry another fire (which is often too frequent for plant needs) so how do we balance fuel reduction with ecosystem needs, particularly in the complexity of the bushland/urban interface
  • Trees – friend or foe? When do trees (isolated/groups) actually become a real risk, i.e. change from perceived hazard to a real risk?
  • Looking and thinking fire/asset protection/ecological resilience – topics will include:
    • Ku-ring-gai ecoburn site (thickening/fuel loading/loss of ground flora)
    • damage to BGHF site (at corner)
    • RCT site and fire management for species persistence
    • Eucalyptus luehmanniana (mallee) location and fire needs
    • 2016 hazard reduction area (along fire trail)
    • 2018 hazard reduction area (just beyond fire trail branch)
    • Eastern Pygmy Possum and specific fire management needs (as prefers mid-stratum banksia/torpor periods) – making ‘designer fire’ for threatened species ‘hotspots’
    • Showground ‘ecoburn’ site (thickening) and compare with long unburnt site (opposite)

Event Properties

Event Date 23-05-2021 8:45 am
Location Caleys Pavilion, Ku-ring-gai Wildflower Garden
We are no longer accepting registration for this event