1 / 30

Update on Forest Health presented to the Southern Interior Beetle Action Coalition

Update on Forest Health presented to the Southern Interior Beetle Action Coalition. Lorraine Maclauchlan Forest Entomologist, Southern Interior Region Ministry of Natural Resource Operations Kamloops, B.C.

phyre
Download Presentation

Update on Forest Health presented to the Southern Interior Beetle Action Coalition

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Update on Forest Health presented to the Southern Interior Beetle Action Coalition Lorraine Maclauchlan Forest Entomologist, Southern Interior Region Ministry of Natural Resource Operations Kamloops, B.C.

  2. Status of bark beetles in the Kamloops, Cascades and Okanagan Shuswap Districts 2009 & 2010 Ha affected

  3. Mountain pine beetle in B.C. 1980-2010 Ha mapped red attack

  4. 2007 2008 2009 2010

  5. Ha MPB in Okanagan Shuswap District 1980-2010 98,064 ha in 2010 (37% decline)

  6. Ha MPB in Kamloops District 1980-2010 9,878 ha in 2010 (91% decline)

  7. Ha MPB in Cascades District 1980-2010 155,000 ha in 2010 (57% decline)

  8. Young pine continues to be killed by MPB and twig beetles despite low proximity to risk

  9. 2008 14.9 mill. ha mature pine 1.96 mill. ha pine age 20-50 years SIR = 7,596 ha mapped in 2010

  10. Number of young pine stands in SIR having some level of MPB mortality in 2010 5,770 ha of MPB mortality

  11. Other bark beetles in the Southern Interior • Spruce beetle – 29,922 ha • half in the Central Cariboo District • Decrease in the Okanagan • Still active in spots in the Kamloops & Cascades Districts • Douglas-fir beetle – 10,809 ha • Sounds pretty low – not the whole picture • spot data not finalized & FB often not well represented in overview mapping

  12. Western balsam bark beetle – 186,284 ha • continuous, annual mortality by WBBB • rarely large areas of mortality, but regular spots throughout landscape Annual attack by Dyrocoetesconfusus

  13. Defoliators in the Southern Interior

  14. Hectares defoliated in BC in 2010

  15. Population trend of western hemlock looper in 3 Districts (ave. # moths caught per 6-trap cluster)

  16. Annual defoliation (ha) by western spruce budworm in the Southern Interior Region 2000-2010

  17. 1916 – 2010 western spruce budworm defoliation

  18. 2009 western spruce budworm defoliation

  19. 2010 western spruce budworm defoliation & spray blocks

  20. Hectares sprayed in Southern Interior Region with B.t.k. for WSB management: 2000-2010 47,687 ha

  21. Annual B.t.k. spray (ha) history for WSB 1987-2010

  22. WSB predicted defoliation levels for 2011 – number of sites falling into each severity category

  23. Douglas-fir Tussock Moth – an eruptive defoliator 2011 should be collapse year 2,597 ha 17,512 ha 17,956 ha

  24. Douglas-fir tussock moth outbreak dynamics in B.C. Current outbreak 2008-2010

  25. Ha defoliated by Douglas-fir tussock moth and area sprayed with NPV orB.t.k. - 2007-2010 2010 Spray Program 1,447 ha treated with NPV (virus) 7,637 ha treated with B.t.k. 17,956 ha 17,512 ha 2,597 ha trace

  26. Area of historic DFTM defoliation 1918-2002

  27. Predicted 2011 DFTM defoliation based on egg mass sampling – number of sites in each severity category

  28. 2011 Spray Plans for western spruce budworm & Douglas-fir tussock moth • Douglas-fir tussock moth: 6,615 ha (over 25 blocks) with B.t.k. • Pavillion Lake • MacLean Lake • W. Kamloops • Penticton/Summerland area (tentative) • Western spruce budworm: 46,000 ha with B.t.k. • 21,800 in the Cariboo • 25,000 ha in Kamloops

  29. summary • MPB still active in south & may decline if winter cold snaps continue • Pockets of western pine beetle active in south • Budworm declining but still over large area – increasing in south • Tussock moth projected to collapse in most areas after 2011 defoliation • western hemlock loopermay outbreak in 2011 • Other bark beetles active/scattered

More Related