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Fisher futures: A turning point?10 October 2019: Quesnel TSA MeetingScott Yaeger
Photo: H. Loney Dickson
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Take home messages
• Fishers are sensitive to landscape modifications
• Status change likely coming
• Fisher Conservation Program ramping up
• We can’t do this alone and need your help
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Fisher Habitat 101
• Forest obligate
• coniferous and mixed forest
• riparian areas
• lower elevations
• Strong associations
• old forests with large structure
• high canopy closure
• well-developed shrub layer
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Fishers and Big Trees:Denning Habitat
Large diameter trees are necessary because fishers have a litters of 2-3 kits.
Fishers are the largest obligate tree cavity user
in North AmericaMin.30 cm
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The Holy Trinity: Deformity, Disease, & Decay
• Critical habitat features needed by fishers result from deformity, disease, and decay
• These features take many decades -->100 years to develop
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Fishers, forests, & fellerbunchers
• Require forests for survival and reproduction• Vulnerable to landscape changes• Forest management is primary threat
• Exacerbated by CE of wildfire, hydro, mining, pine beetle kill, and other uncertainties due to climate change
• Trapping (direct and incidental) is secondary threat
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Fishers are sensitive
• They like a mosaic of forest stages…
• but too much of any one age class is bad, and
• Problems occur when the magnitude and speed of current change is beyond the ability of the forests to re-supply the features that fishers need
Big Creek, Chilcotin
~ 5 km
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Fishers and “Open” Landscapes
• Findings from two study areas:
• Williston (SBS) and
• NW Idaho
• Strong negative relationship between amount of “open” areas* and relative probability of occupancy
*Recent harvesting (in last 12 years) + wetlands
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194 ha logged~5% of home range
50% decline in the relative probability of occupancy
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503 ha logged 2000-2005~12.6% of home range
0.12
88% decline in the relative probability of occupancy
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34%
21%
19%
22%
15%
56%
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New Science*:
• Genetics show at least 2 distinct populations:
• Boreal:• Increasing - λ = 1.17 (95% CI: 0.87–1.47)
• Central Interior: • Declining - λ =0.96 (95% CI: 0.70–1.21)
(* Preliminary results, not for citation. Publication submission anticipated late 2019 early 2020)
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Likely COSEWIC Outcome• Central Interior population likely to
qualify as Designatable Unit (DU) under COSEWIC.
• Endangered under criteria C.2.a.ii:1. Total number of mature individuals
estimated to be <2,500 2. A continuing decline, observed,
projected, or inferred, in numbers of mature individuals and one subpopulation has ≥ 95% of all mature individuals
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October 2018
Forest Practices Board Report“Nazko Investigation”
• FLNRO failed to use legal tools available to protect fisher habitat (e.g., Sec. 9, 10, 11 of GAR or Sec. 7 of FRPA)
• Did not coordinate salvage harvest on the landscape; allowing for excessive harvest
• Did not monitor to see if available fisher habitat guidance was being followed
Findings could be extrapolated to a much larger portion of the province particularly the Central Interior regions
“Fisher populations appear to be at a high risk of decline or extirpation due to the magnitude of habitat disturbance over the past 15 years from mountain pine beetle, fire and salvage harvesting.”
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“Nazko Investigation” Gov’t Response
Board Recommendation #1
…gov’t must take leadership on landscape level decisions. … and ensure that harvesting and retention planning is coordinated between multiple licensees with spatially-explicit legal direction for species at risk…
Gov’t response:
The ministry is currently working to develop landscape level planning options and to strengthen FRPA in a number of ways that could help in this regard.
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“Nazko Investigation” Gov’t Response
Board Recommendation #2
Gov’t should protect remaining important fisher habitats and restore the local population.
Gov’t response:
…to enhance the conservation of fisher habitat:
(a) expand the Fisher Habitat Extension Program
(b) expand field trials
(c) develop landscape planning tools (i.e., models)
(d) monitor populations in Chilcotin
(e) develop a provincial Fisher Management Plan
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FPB Response to Gov’t Response
• The Board supports the strengthening of FRPA, and believes that landscape level planning has been a gap in the existing planning framework.
• Unfortunately, legislative changes will take several years to implement and fisher habitat continues to be at risk in the interim.
• …steps to protect valuable fisher habitat are needed.
• Report back how the five actions identified by the Ministry will be implemented and how they will improve outcomes for Fisher by July 31, 2020.
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Fisher Habitat Extension Program
Common goal:
• Get the information learned from the projects out to the people that can affect the supply of fisher habitat
• Thus, aiding in the conservation, recruitment, and enhancement of fisher habitat in British Columbia
• Converting 25 years science
Study area BEC subzones Animals tagged RadiolocationsBeaver Valley SBSdw 18 1021Williston SBSmk, SBSwk 22 827Chilcotin SBPSxc, MSxc, IDFdk 11 454Kiskatinaw BWBSmw 25 1384Site C BWBSmw 15 526
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Fisher Extension: Converting Science Into Helpful Tools
KEEP HARVEST
EXTENSION
EXTENSION
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Fisher Habitat Extension Program (est. 2009)
Provide conservation and management “tools”All available on a non-government website (www.bcfisherhabitat.ca)
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Fisher Landscape Planning Tool
Potential applications:
• ID areas for protection (and co-location)
• Input to the Timber Supply Review
• Review of proposed cut block plans
• Predict high conflict areas
Developing spatial tools and procedures to help licensees and government plan or manage habitat at broad scales
Support for project from LBIS, ENV, and Dawson Creek NRD
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Fisher Management Plan
Protect Fishers
Inform Decisions
Provide Habitat
Facilitate trapper use of fisher
exclusion boxes
Maintain functional fisher habitat
Protect and Recruit functional fisher
habitat
Provide accessible, transparent data and information
Provide certainty to affected natural
resource users
Advance partnerships in fisher
recovery
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How can you help us keep fisherfrom becoming the next caribou?
• Please use the voluntary guidance provided on www.bcfisherhabitat.ca.• Continue to work with the fisher team to
develop new approaches and refine existing tools.
• Tools are likely to become foundation of provincial fisher management plan.
• If we can demonstrate ‘proactive’ conservation action and effective management; may preclude federal intervention.
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[email protected] [email protected] [email protected]
Scott: 1995 Rich: 1990 Larry: 2006
Thank You! Please Contact: