Bark Beetles - The End

Bark Beetles - The End
- Mtn Pine Beetle
  - Review
    - critical factors
    - epidemic b/c
    - management strategies & tactics
    - hydrology
    - wildlife
  - Carbon (video)
    - now a carbon source (instead of a sink)
    - ~ 990 megatonnes of CO2 by 2020 due to MPB
    - this is larger than the uptake of all forests of BC
  - Economic Impacts
    - 11,250 direct & 9,500 indirect jobs over 2 decades
    - Continent-wide impacts expected
      - MPB kill ~ one Billion m3
      - Canadian lumber production not expected to recover this century
      - "Falldown" to begin ~2015
      - Canadian lumber exports may drop by 50% ...
      - ... leading to a NA shortage of lumber ...
      - ... expect lumber prices to rise
- Spruce Beetle
  - Dendroctonus rufipennis IBS
  - Hosts: Sx; Range: across Canada
  - Biology
    - 2 year life cycle
    - prefers windthrow
  - Bowron
    - 175,000 ha outbreak
    - ~50,000 ha harvested
    - today - Google image
- Douglas-fir Beetle
  - Dendroctonus pseudotsugae IBD
  - Hosts: Fd (Lw), Range: s. BC & into PNW interior
  - Biology
    - 1 year life cycle
    - prefers windthrow (v. stressed trees)