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Entomological Observations in Northern Forest Region: A Study on Insect Infestations

Robert Hodgkinson's comprehensive research on various tree beetle infestations in British Columbia's forest region. The study includes insights on Mountain Pine Beetles, Douglas-Fir Beetles, and Spruce Beetles with detailed observations and images. Discover the impact of these insects on young plantations and the measures taken for salvage harvesting and management.

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Entomological Observations in Northern Forest Region: A Study on Insect Infestations

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  1. Entomological Observations From the Northern Interior Forest Region (East) Robert Hodgkinson, R.P.F., R.P.Bio. Forest Entomologist B.C. Ministry of Forests & Range Northern Interior Forest Region Prince George, B.C.

  2. Outline • MPB in Young Pl • Douglas-Fir Beetle • MPB Attacking Sx & Sb

  3. Oh my . . It is John Borden! Larson, see if you can figure out what the hell he was working on. Phero Tech

  4. October 18, 2007 Condition of Pl Killed by MPB in 2004 at Canfor block Chil 76 west of Tagai Lk. in Southwest Prince George Forest District Salvage Harvesting in Progress

  5. Jerry Cr. Area - Prince George Forest District - Oct. 4, 2007

  6. Under bark view Jerry Cr. Block Oct. 4, 2007 Pl #1 2006-attack Blue staining, unsuccessful brood, no exit holes 9 cm dbh Height = 8.7 m Age = 21

  7. Pl # 2 Closer View of Extreme Density of Egg Galleries

  8. Upper Sukunka - Peace River Forest District Opening 18 Polygon 44 Pl Sw 2101-16 • Logged 1971 • Burned 1974 • Planted 1977 • MPB-Killed in 2006 Photo by Jamie Eason Canfor, Chetwynd May 25, 2007

  9. South of Mackenzie Lakes - P.G. District Rustad Bros. A07757 CP B • Logged 1979 • Site Prep. 1979 Young Pl Polygon 186 • Planted 1984 • Spaced 1994 • Declared FG 2002 • First attacked by MPB in 2006 93G046-3 81 ha Nov. 8, 2006

  10. The View Approx. 11 Months Later Young Pl Polygon 186 93G046-3 81 ha Oct. 18 , 2007

  11. South of Mackenzie Lakes - Prince George Forest District Young Pl Polygon 186 93G046 Nov.8, 2006 Mostly attacked in 2006 View of Block Approx. 11 Months Later Young Pl Polygon 186 Oct. 18, 2007

  12. Second Block South of Mackenzie Lakes Rustad Bros. A07757 CP A • Logged 1976-77 • Chain dragged 1977 • Planted 1978 • Declared FG 1986 • Spaced & Manual Bushed 1998 Young Pl Polygon 645 First attacked by MPB in 2006 94G046-14 Nov. 8, 2006 62.8 ha

  13. Second Block South of Mackenzie Lakes Rustad Bros. A07757 CP A Young Pl Polygon 645 Approx. 11 Months Later on October 16, 2007

  14. Substantial MPB Attack in 2006 Nov. 8, 2006 View of Block Approx. 11 Months Later October 16, 2007

  15. March 9, 2004 MPB activity in young Pl plantations over 3.5 years along Bowron River approx. 10 km north of Hwy. 16 E. A B A = Opening # 54, 75.2 ha (Opening I.D. = 571) Canfor A18165, CP 488 Logged in 1987 Planted in 1989 Manually brushed in 1994 18 year old Pl in 2007 October 4, 2007 A B B = Opening # 20 Logged in 1975 28 year old Pl in 2007

  16. Sept. 13. 2005 43 Year Old Pine Killed by MPB Adjacent to Lintz Lake in Prince George Forest District in the SBS dw2 04,06 Photo by Jeff Burrows October 18, 2007 • Burned in 1958 • Thinned in 1984-86 • 5% attacked in 2003 • 75% attacked in 2004 • remainder of approx. 20% of susceptible diameters attacked between 2005 - 2007

  17. Aftermath of Spruce Beetle Outbreak Bowron R. - km 84.5 R. Hodgkinson - July 1985

  18. Same Spot, Different Beetle, 27 years later! R. Hodgkinson - Oct. 18, 2007

  19. R. Hodgkinson - 1985 R. Hodgkinson - Oct. 18, 2007

  20. Douglas-Fir Beetle As of March 27, 2007, 90 Patches of 3 - 100+ attacked Fir per site along the Blackwater R. in southern Prince George District

  21. March 27, 2007 Field Trip With P.G. District & Canfor Staff

  22. Nov. 22, 2007 Aerial Reconn. of DFB - P.G. District

  23. Typical Patch of Douglas-Fir Attacked by Douglas Fir Beetle Blackwater Area 515 - Jan. 16, 2008 Avg. volume of 1600 m3 per patch

  24. DBH = 99 cm

  25. Poor Brood Success But Lethal Blue Staining Some Brood Success in Older Attack

  26. Not all Douglas-fir are successfully attacked and killed

  27. As of Jan. 25/08, some 271 fir attacked in this area Area 448 in Blackwater

  28. MPB “Good heavens - just look at you! You’ve been trying to attack spruce again, haven’t you?”

  29. MPB 4th Instar Larva & Pupa in Spruce at Miworth June 12, 2006

  30. New Generation MPB Adults Emerged From Spruce at Miworth July 28, 2006

  31. Pine & Spruce Baiting Trial in 2007 Prince George District - 800 Rd.

  32. MPB Attacks on Back Yard Spruce in Prince George Continued in 2007 Most were Unsuccessful Attacks

  33. 9.4 cm dbh black spruce unsuccessfully attacked by MPB at Lintz Lk. in 2007 October 18, 2007

  34. Parting Thought: Oh no!

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