Why is Canadian policy governing boreal mixedwood forests so … · 2018. 4. 13. · 8/28/2015 16...

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Why is Canadian policy governing boreal mixedwood forests so complicated? Victor Lieffers Department of Renewable Resources, University of Alberta

Transcript of Why is Canadian policy governing boreal mixedwood forests so … · 2018. 4. 13. · 8/28/2015 16...

Page 1: Why is Canadian policy governing boreal mixedwood forests so … · 2018. 4. 13. · 8/28/2015 16 Spruce slowly become dominant . 264 pages Developed over ~50 years Thousands of hours

Why is Canadian policy governing boreal mixedwood forests so complicated?

Victor Lieffers

Department of Renewable Resources, University of Alberta

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Simple system – dominated by 2 species.

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Objectives

• Review succession and issues of management in boreal mixedwoods

• Review the history of forest policy (Alberta)

• Discuss implications of where we are now and how we might change

• If we could start over again, would we regulate these forests as we do?

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Issues

• Public lands

• Provinces have their own rules/regulations

• Bias towards spruce in management/regeneration

• Overlapping tenures - linked to mills

• Designation of mixedwoods into distinct landbase strata

• Regeneration responsibility done by forestry company

• The modelled speed of regrowth – linked to AAC

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Boreal mixedwood forests are found on the mesic part of the landscape

Dry

Wet

Mesic

.

Nutrients

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Early successional stage is dominated by aspen suckers

Succession

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• Seed availability (masting, dispersal distance)

• Seedbeds

Post-disturbance natural regeneration of white spruce

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8/28/2015 9 100m

wind

Spruce seed dispersal

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Dense hardwoods – slows spruce growth

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Spruce reasonably well in moderate density hardwood

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Natural mixedwoods

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Aspen-dominated mixedwood without leaves –understory spruce

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Old-growth spruce – aspen is mostly eliminated

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Spruce slowly become dominant

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264 pages Developed over ~50 years Thousands of hours of thought and Negotiation Game of cat and mouse with regulators and industry

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8/28/2015 18 Wood Supply

Regeneration Standards

Forest Management Planning

Deciduous Wood Supply

Wildlife Management

Viewscape Management

Public Advisory Boards

Natural Disturbance Management

Historical and Archeological

CCFM - SFM Criteria

Biodiversity Conservation

3rd Party Certification & CBFA

First Nations concerns

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Forest management units with overlapping coniferous and deciduous rights A recipe for conflict!

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• Bias towards conifer.

• Overlapping tenure. Tenure related to supplying a specific mill.

• Taking mixedwood land base and designating it to a specific landbase strata that does not acknowledge succession.

• Movement towards ecosystem management where structure is left behind.

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How do we manage spruce now?

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2013 ~90% planted in Alberta and British Columbia ~55% planted in Ontario and Quebec

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Control aspen

• Herbicide or Brush saw treatments

• Herbicides peaked at ~45,000 Ha/y – now ~30,000

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Gitte Grover

8 year plantation

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15 years -tended spruce plantation – expensive to get here

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How did we get to these regeneration standards?

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1971

• Recognition that regeneration was not assured. Mobilization of this concern

• Stocking of conifer –conifer bias

• Regenerate the forest that you cut!

• Beginning of the conifer landbase (strata)

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1979

• Stocking, C & D landbase, formal survey

– Recognition that Deciduous forest exists and does not need to be converted to conifer

– Stepped up the formality of data collection

– Time of Forest Resource Development Agreement (FRDA)

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Survey Protocol

• Regular grid of 10m2 plots.

o o o o o o o o o o

o o o o o o o o o o

o o o o o o o o o o

o o o o o o o o o o

o o o o o o o o o o

Cutover area

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1991

• Stocking, ecosites, C, M, & D landbase strata

• Performance Survey – year 14,

• Minimum height

• Free-to-Grow Cylinder was enacted (FTG).

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8/28/2015 32 1.78 m

2)Free-To-Grow Standard

(Competition index placed into regulation)

< Height of the conifer

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Free-To-Grow Standard

2/3 height

Fails FTG standard

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Outcome of FTG was spraying of deciduous to promote juvenile spruce

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2005 (Alternate Regeneration Standards)

• Stocking, C, CD, DC, & D landbase

• Linkage of standard to yield strata

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Spray patterns were planned in terms of distribution of residuals - DC

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2010 (Alberta Regeneration Standard)

• Removed the FTG cylinder

• Developed full linkage of Annual Allowable cut to the regeneration of the forest – yield modelled by GYPSY ( and MGM)

• Projected yield of conifer highly limited by presence of aspen

• Models limitations now control management.

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Strata (and strata balancing)

Deciduous Coniferous DC CD

Pure, intimate or aggregated mixtures

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Spruce slowly become dominant

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Outcomes

• Competitive system - conflict between deciduous and coniferous mills

• In most management there is an effort to spatially separate the deciduous and coniferous species

• Heavy reliance upon planting and intensive management for conifers

• Relatively little partial-cut silviculture

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Why not more understory protection

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Regeneration stands built on shaky foundation Overlapping tenures Distinct landbases.

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Transfer of responsibility of regeneration on public land to the private firm

…..but government wants control of the outcome.

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Problem has been identified earlier

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What could be done? • Single tenure holder must supply the timber of

both broadlead and conifer species, i.e.

• Successional planning instead of Landbase Strata

• Eliminate overlapping tenure (strata)

• Leave the current policies in place and let the government do the regeneration and supply the wood??

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Thank you