here. - Ministry of Forests, Lands and Natural Resource Operations

More documents

Recommendations

Info

In v e r M e r e tSa Bark Beetles Mountain pine beetle infestations continued to decline, with area affected down by 50% to 8,225 hectares. The number of spot infestations was down as well, from 670 to 448. Areas east of the Rocky Mountain Trench, including the Kootenay River, Palliser River, and Lussier River, saw the most significant declines. However, despite the overall declining trend, red attack is still widespread, and present in most areas of the TSA. Whitebark pine mortality was common in the northwestern portion of the TSA, especially near Bobbie Burns Creek, Frances Creek, and the Spillimacheen River, with affected area increasing to 1,615 hectares. Most active Douglas-fir beetle was in Kootenay National Park and in the lower Lussier River. Total affected area was up by 75% to 743 hectares. The number of spot infestations also increased from 36 to 65. A few other scattered pockets were mapped around East White River, Kindersley Creek, and Premier Lake. The overall extent and intensity of an ongoing infestation of spruce beetle in the North White River drainage has remained relatively constant for several years, with mortality mapped on 550 hectares in 2012. Western balsam bark beetle remained quite scattered in the TSA, with only 1,093 hectares of trace and light attack mapped. Defoliators Defoliator activity remained low in the TSA, with visible damage limited to 206 hectares of aspen serpentine leaf miner and six hectares of birch leaf miner. Foliar Diseases Larch needle blight damage increased from 900 hectares in 2011 to 2,361 hectares in 2012. Most of the damage was light, and was concentrated in the Kootenay River area. Several other minor damaging agents were recorded during the aerial surveys, including 775 hectares of wildfire, 358 hectares of windthrow, 63 hectares of bear damage, and 31 hectares of flooding. In addition, 156 new or widened avalanche paths affected 333 hectares of spruce-balsam forests. Left: bear damage in a lodgepole pine plantation, Spillimacheen River, Invermere TSA. Right: extensive windthrow in the Palliser River valley, Invermere TSA. Ministry of Forests, Lands and Natural Resource Operations, Kamloops, B.C. 32 Spruce beetle attack in the North White River valley, Invermere TSA.
go l d e n tSa Bark Beetles Mountain pine beetle infestations were down from 6,983 hectares in 2011, to just 2,844 hectares in 2012. Infestation intensity also declined, with nearly three quarters of the affected area classified as trace. The main infestations in Yoho National Park have nearly subsided, and beyond the park, most attack was scattered in small patches. Douglas-fir beetle activity also declined, for the third year in a row. Red attack was mapped on just 145 hectares, and only 4 spot infestations were recorded. Most of the attack was in the Beaverfoot River area. A few small spruce beetle infestations covering 62 hectares were observed in the Quartz Creek and Gold River areas. This is the first spruce beetle activity mapped in the TSA in several years. Although nearly 2,000 hectares were affected by western balsam bark beetle, tree mortality levels remained low and patches of activity tended to be small and scattered. Defoliators Aspen serpentine leaf miner, Golden TSA. Western hemlock looper defoliation was mapped on 616 hectares just west of Rogers Pass, in the Beaver River and Mountain Creek valleys. No population assessments were made and no treatments are planned for 2013. Aspen serpentine leaf miner populations increased, with defoliated area up over 7-fold to 4,056 hectares. Most of the affected stands were near Golden, the Beaverfoot River, and along the east side of Kinbasket Lake. The majority of the damage was rated as light. Other defoliator activity was light, with just 149 hectares of birch leaf miner detected in the Gold River – Kinbasket Lake area. Several small patches of severe satin moth defoliation were noted during three-tree beating surveys west of Golden, and between Spillimacheen and Parsons, however they were not visible during aerial surveys. Other damaging agents included 174 hectares of larch needle blight near Donald, 440 hectares of flooding damage along the Columbia River near Donald and Golden, 427 hectares of wildfire, 153 hectares of windthrow, 72 hectares of bear damage, and 47 new or widened avalanche paths which affected 96 hectares. A few additional damaging agents were noted during defoliator three-tree beating surveys, including: a bud fungus, possibly Dichorera gemmicola, killing Douglas-fir buds near Donald; and a foliar disease, likely Pucciniastrum epilobii, causing light to moderate defoliation of semi-mature sub-alpine fir through Rogers Pass. Ministry of Forests, Lands and Natural Resource Operations, Kamloops, B.C. 33 Declining mountain pine beetle infestation in Yoho National Park.
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: cr a n B r o o k tSa Bark Beetles M
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 and 68: Table 19. Total number of larvae pe
Page 69 and 70: Table 21. Average number of Douglas
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

here. - Ministry of Forests, Lands and Natural Resource Operations

Create successful ePaper yourself

Delete template?

Save as template?