Klaus Puettmann Edm und Hayes Professor in Silviculture Alternatives
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Transcript of Klaus Puettmann Edm und Hayes Professor in Silviculture Alternatives
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Klaus PuettmannEdmund Hayes Professor in Silviculture Alternatives
Moving “Beyond The Label” May Lead To Wider Applications Of Uneven-aged Management
(alternative silviculture)
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Lindenmayer et al. 2012 ConsLet
Opportunities for alternative silviculture
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Gobal distribution of “primary designated functions”
Per FAO assessment 2010
Biodiversity Production
Soil and water protection Social services
Multiple use Unknown/Other
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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
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Partial harvest
Small- scale
variability
Avoid intensive
operations
Natural regeneration
Mixed species
Five Principles of Alternative Silviculture
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Hurdles to Overcome
• Ecology• Economics• Logistics• Education (Information)• Culture (History)
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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”
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Small-scale Variability
• Ecology• Fire ladder• Diseases
• Economics• Wood quality/branch size
• Logistics• Machines• Inventory/planning
• Education• Culture
• Stand layout
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Avoid Intensive Operations
• Ecology• Competitive understory• Tree quality and stability
• Economics• Yield/quality reduction
• Logistics• Education
• Information about natural development
• Culture
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Natural Regeneration
• Ecology• Species mixture• Assisted migration
• Economics• Variable success
• Logistics• Monitoring
• Education• Information about establishment and growth, release potential
• Culture• Reforestation laws
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Mixed Species
• Ecology• Response to disturbances
• Economics• Wood value
• Logistics• Market access
• Education• Competitive relationships
• Culture• Reforestation laws
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• 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”
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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?