business adaptation to climate change roland wahlquist
TRANSCRIPT
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Business Adaptation to
Climate Change
Roland Wahlquist
June 2013
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Agenda
• What we had observed
• Our tipping point
• Adaptation
– Vineyard classification
– Vineyard management
– Varieties
– Winemaking
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What we had observed
• Water shortages, esp 2007 vintage
• Earlier vintages
• Hotter, shorter vintages – pressure
on refrigeration, waste water
treatment
• Increased sunburn
• Higher alcohols
• Increased colour in whites
• Decreased colour in reds
• Lower acidity
• Higher phenolic levels
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The big one…..
Smoke Taint!
•Unheard of before 2003
•Significant fruit losses in 2003, 2007 and
2009
•Often just prior to harvest after the money
has been spent and there is little time for
alternate plans
•Insidious, difficult to quantify
•Now Brown Brothers No 1 agricultural risk
factor
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What is going on??
Presentation from Graeme
Anderson, DPI, in 2008 to the
company’s Board and Senior
Management Team
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The instrumental record
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Climate variability versus longer
term climate temp change (UK - Met
Office)
Variations between IPCC scenarios
(temp. change from 2-6 degrees)
largely depend on how humans
respond– not uncertainty about the
science
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Our Tipping Point
• Convincing data that this is not
cyclical, it is a fundamental
change
• We need to accept that this is
happening, and plan
accordingly
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Increased average temperature
scenario
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Company Vineyards
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Vineyard Reclassification Vineyard Current
MJT
New MJT
Mystic Park 23.5 25.5
Milawa 22.8 24.8
Heathcote 22.3 24.3
Banksdale 20.6 22.6
Whitlands 19.0 21.0
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Water use efficiency
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Vertical
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Vertical Horizontal
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New Varieties
• From Portugal, Spain and Italy
• From the CSIRO breeding
program
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Winery Adaptation
• Increased peak load capacity – crushing,
fermentation, refrigeration, clarification,
waste water management
• Reverse osmosis for alcohol reduction
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In Summary
• The planning horizons are
long, so start now
• Look for the opportunities. It
is not all bad news
• Adaptability will win
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