Klaus PuettmannEdmund Hayes Professor in Silviculture Alternatives
Moving “Beyond The Label” May Lead To Wider Applications Of Uneven-aged Management
(alternative silviculture)
Lindenmayer et al. 2012 ConsLet
Opportunities for alternative silviculture
Gobal distribution of “primary designated functions”
Per FAO assessment 2010
Biodiversity Production
Soil and water protection Social services
Multiple use Unknown/Other
World map by www.freeworldmaps.net
Ecological forestry
Continuouscover
Nature oriented
Close-to-nature
Reduced Impact logging
Variable retention
Ecosystemmanagement
SystemicSilviculture
Natural Disturbance-based
management
Retentionforestry
Global Scale of Alternatives
Partial harvest
Small- scale
variability
Avoid intensive
operations
Natural regeneration
Mixed species
Five Principles of Alternative Silviculture
Hurdles to Overcome
• Ecology• Economics• Logistics• Education (Information)• Culture (History)
Partial Harvest - Retention
• Ecological• Scale - natural disturbances
• Economics• Penalty for large tree size• Interest rate
• Logistics• Labor (marking trees)• Machines
• Education• Culture
• “Imprinting” or “knowledge lock-in”
Small-scale Variability
• Ecology• Fire ladder• Diseases
• Economics• Wood quality/branch size
• Logistics• Machines• Inventory/planning
• Education• Culture
• Stand layout
Avoid Intensive Operations
• Ecology• Competitive understory• Tree quality and stability
• Economics• Yield/quality reduction
• Logistics• Education
• Information about natural development
• Culture
Natural Regeneration
• Ecology• Species mixture• Assisted migration
• Economics• Variable success
• Logistics• Monitoring
• Education• Information about establishment and growth, release potential
• Culture• Reforestation laws
Mixed Species
• Ecology• Response to disturbances
• Economics• Wood value
• Logistics• Market access
• Education• Competitive relationships
• Culture• Reforestation laws
• Flexibility to accommodate local conditions– Relative importance of principles
• Focus on outcomes– Not necessarily principles or structures– Ecosystem services
• “Babysteps”
• Benefit of a conceptual, scientific framework (Complex adaptive system?)
Moving “Beyond The Label”
Acknowledgements: Drs. Baker, Australia; Bauhus, Germany; Donoso, Chile; Droessler, Scandinavia, Girma, Ethiopia; Harvey, Canada; Nocentini, Italy, Wilson, Great Britain; Yuanchang, China, and Yosihda, Japan. Discussions with numerous colleagues and students.
Thank you for your attentions !
Questions and Comments?
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