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Table 20. 2012 larval counts for nine sites in the West Kootenays/Boundary area as determined by threetree beatings. Western Spruce Budworm Douglas-fir Tussock Moth Western Hemlock Looper, Western false hemlock looper Greenstriped Forest Looper Sawflies, Neodiprion spp. Site Location 2 Johnstone Crk Rd 16 - - - - - - - - - - - - 16 L 3 Kettle Valley Park 54 - 1 - 1 - - - - - - - 1 20 L 5 Eholt 94 - - - - - 1 - - - - - - - T 8 Grand Forks 41 - 1 - - - - - - 1 - - - - T 9 Christina Lake 23 - - 1 2 - - - 1 - - - - - N 10 Cascades 20 - - - - - - 1 - - - - - - N 12 Midway 58 - - - - 3 - - - - 2 1 - - T 20 Waneta 2 - - - - - - - - - - - - - N 55 Wallace Road 16 - - - - - - - - - - - - - T Total 324 0 2 1 3 3 1 1 1 1 2 1 1 36 * T = trace defoliation; L = light defoliation; N = Nil Six Trap Clusters Overall moth catches decreased throughout the Thompson Okanagan Region except for a few sites in the Kamloops and Okanagan outbreak areas (Table 21). The Heffley and Six Mile sites saw moderate increases and subsequent ground checks identified a scattered, light incidence of new egg masses. Trap catches in McLure declined, but remained above the threshold of 25 moths per trap and discrete pockets of egg masses were found. Two sites in the North Okanagan (Table 21) had increased trap catches from 2011, but ground checks did not reveal evidence of cocoons or egg masses near the trap sites. Trap catches also declined in the West Kootenay Boundary Region from an average of 73 moths per trap in 2011 to just one moth per trap in 2012 (Table 21). Four of the sites were positive for Douglas-fir tussock moth, down from 8 positive sites in 2011. It appears that the tussock moth population has subsided in this outbreak area. In the Cariboo Region, trap catches at 58 sites were similar to 2011, with an average of 1.6 moths per trap in 2011 and 1.4 moths per trap in 2012 (Table 21). Two sites, at the old Carquille Rest Area south of Clinton and at Big Bar Creek along the Fraser River, averaged nine moths per trap. It appears that most Douglas-fir tussock moth populations are static or in the decline phase throughout the southern interior of the province. Ministry of Forests, Lands and Natural Resource Operations, Kamloops, B.C. 68 Dioryctria pseudotsugella Ectropis crepuscularia Eupithecia palpata Pero morrisonaria Macaria unipunctaria Cosmia praeacuta Feralia comstocki Dichelonyx backi Defoliation*
Table 21. Average number of Douglas-fir tussock moths caught per six-trap cluster site in four outbreak areas of the Thompson-Okanagan Region (Kamloops, Okanagan, Similkameen, West Kamloops), the Kootenay- Boundary Region (near Rock Creek and Midway) and the Cariboo Region (Clinton-Big Bar area). Average moth catch per trap Site Location 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 Kamloops 1 McLure 6.3 3.3 0 9.8 33.3 65.7 4.5 25.6 40.5 29.0 2 Heffley Creek 76.3 5.5 38 14.8 34.2 89.8 15.8 2 3.3 33.4 3 Inks Lake 30 1.5 0.3 10.2 5.6 58.8 26.6 1 6.2 6.0 4 Six Mile 67 9.7 33.6 52.5 73.5 73.3 51 48.8 19.2 29.0 9 Stump Lake 3.2 1.2 3.8 2.8 8.7 61.8 15.6 22.7 79.8 0.7 10 Monte Creek 10.7 13.8 40.2 18.3 80.5 75.2 9.2 21.7 54.5 59.2 11 Chase 36.3 11.2 9.3 0 0 25.3 7.8 0 1.8 8.6 Average of sites 32.8 6.6 17.9 15.5 33.7 64.3 18.6 17.4 29.3 23.7 Okanagan 12 Yankee Flats 1 0.3 2 0 0 38.5 2.2 3 32.0 42.7 13 Vernon 24.8 22.7 79.8 12.2 1.3 24.8 24.3 22 35.2 38.2 14 Winfield/Wood Lake 1.4 6.7 11 0.3 1 38.8 50.8 34 14.7 6.8 15 Kelowna/June Springs - - - - - - - 46.8 0.7 0.0 16 Summerland 0 0 4.5 1 0.3 43.5 13.2 0 8.5 0.5 17 Kaleden 0.3 0.3 18.6 11.6 29 55.4 27.7 2.9 3.7 0.3 18 Blue Lake 9.2 8.4 39.8 8.3 1.3 63.2 5.2 0 0.5 0.5 Average of sites 6.1 6.4 26.0 5.6 5.5 44.0 20.6 15.5 13.6 12.7 Similkameen 19 Stemwinder Park 1.2 1 29.5 1.5 17.8 40.2 30.7 0 0.0 0.3 20 Ashnola River 0.5 0 14.3 0 12.3 43.3 20.5 0 0.8 n/a 32 Olalla - - - - - - - 5.7 3.7 2.0 33 Red Bridge Rec Site - - - - - - - 0.3 0.0 0.0 34 Ashnola River Road - - - - - - - 0 0.0 0.2 36 Hwy 3 Lawrence Ranch - - - - - - - 0 0.8 0.7 37 Hwy 3 Willow Heights - - - - - - - 0 0.0 0.2 38 Hwy 3 Bradshaw Creek - - - - - - - 0 3.2 0.3 39 Hwy 3 Winters Creek - - - - - - - 0 1.2 0.8 40 Hwy 3 Nickelplate Rd - - - - - - - 0 6.2 0.0 41 Stemwinder FSR - - - - - - - 0 3.0 0.0 42 Old Hedley Road - - - - - - - 0 0.4 0.0 43 Pickard Creek Rec Site - - - - - - - 0.3 2.5 1.0 44 5.7 km Old Hedley Road - - - - - - - 5.7 0.7 0.8 Average of sites 0.9 0.5 21.9 0.8 15.1 41.8 25.6 0.9 1.6 0.5 West Kamloops 5 Battle Creek 67.7 5.6 1.2 14 34.8 64.5 12.3 46.5 2.5 0.0 6 Barnes Lake 52.2 6.7 1.5 34.5 21.3 58 0.5 24.3 37.5 4.7 7 Carquille/Veasy Lake 83 2.7 0 13.8 22.5 59 13 38.2 54.5 16.0 8 Pavilion 9.7 0.3 0 1.5 15.7 40 15.7 7.8 82.5 3.2 21 Spences Bridge 21.3 1.5 0 1.5 10.2 5.7 29.5 59.3 68.5 56.0 22 Veasy Lake - - - - - - - 27.8 68.0 16.2 23 Veasy Lake - - - - - - - 5.6 43.3 3.3 24 Veasy Lake - - - - - - - 6.8 76.3 14.5 25 Highway 99 - - - - - - - 11.0 23.0 7.4 26 Venables Valley - - - - - - - 24.3 39.7 11.5 27 Maiden Creek - - - - - - - 3.5 8.0 3.5 28 Highway 99 - - - - - - - 3.0 9.3 7.2 29 Cornwall 79 - - - - - - - 28.8 49.5 1.2 30 Cornwall 80 - - - - - - - 2.0 6.0 0.2 31 Barnes Lake - - - - - - - 7.7 9.8 0.8 Average of sites 46.8 3.4 0.5 13.1 20.9 45.4 14.2 19.8 38.6 9.7 Boundary (Avg of 9 sites) - - - - - - 4.0 2.0 73.0 1.0 Cariboo (Avg of 58 sites) - - - - - 2.3 4.0 1.7 1.6 1.4 Ministry of Forests, Lands and Natural Resource Operations, Kamloops, B.C. 69
Page 1 and 2:
2012 Overview of Forest Health Cond
Page 3 and 4:
In t r o d u c t I o n This report
Page 5 and 6:
Table 2 continued. Area summaries f
Page 7 and 8:
So u t h e r n In t e r I o r ov e
Page 9 and 10:
Attack in young lodgepole pine stan
Page 11 and 12:
A total of 116,012 hectares of high
Page 13 and 14:
we S t e r n he M l o c k lo o P e
Page 15 and 16:
BI r c h le a f MI n e r, fe n u s
Page 17 and 18: th o M P S o n ok a n a g a n re g
Page 19 and 20: Aspen decline syndrome became more
Page 21 and 22: Defoliators Western spruce budworm
Page 23 and 24: Defoliators Western spruce budworm
Page 25 and 26: Conifer Defoliators Western spruce
Page 27 and 28: A Douglas-fir Drought-Decline Compl
Page 29 and 30: Bo u n d a rY tSa Bark Beetles Moun
Page 31 and 32: cr a n B r o o k tSa Bark Beetles M
Page 33 and 34: go l d e n tSa Bark Beetles Mountai
Page 35 and 36: ca r I B o o re g I o n Su M M a r
Page 37 and 38: Douglas-fir beetle continued to be
Page 39 and 40: Defoliators As expected, western sp
Page 41 and 42: Thompson Okanagan Region The Thomps
Page 43 and 44: Table 2. List of western spruce bud
Page 45 and 46: Hiller spraying B.t.k. on budworm b
Page 47 and 48: Kootenay Boundary Region A total of
Page 49 and 50: Abbott’s corrected mortality comp
Page 51 and 52: Figure 5. Density and distribution
Page 53 and 54: 2012 Population Monitoring - Result
Page 55 and 56: Above: Lucy Stad receiving budworm
Page 57 and 58: One of the cancelled spray areas in
Page 59 and 60: In the Thompson-Okanagan Region, we
Page 61 and 62: Figure 9. Average number of western
Page 63 and 64: There is an ongoing study to calibr
Page 65 and 66: Larval density ± SEa b Percent mor
Page 67: Table 19. Total number of larvae pe
Page 71 and 72: This stand has records of defoliati
Page 73 and 74: References Garbutt, R. 1992. Wester
Page 75 and 76: Be a r IM Pa c t S o n gr o w t h o
Page 77 and 78: To better understand the progressio
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