The results are seen in timber trade even in the Nordic countries: the markets are suddenly flooded with huge batches of timber that simply must be sold. Inspection of trees in this category should therefore be a priority. (2017) used a multispectral sensor to classify a disease outbreak in mature Pinus radiata D. Don using a UAV as a platform. Beetles live in the thin, phloem (growing) layer between the bark and the wood. The season for active spruce bark beetles has now come to an end. That is about 25 percent, or 300,000 m³sub, more than shown by the inventory in late August. Damage Agent Scientific Name; Armillaria root disease : Armillaria spp. The most recent damage inventory of Södra’s 330 surveillance estates in late October shows that more than 1.4 million m³sub of spruce forest on members’ estates is spruce bark beetle-impacted. Drivers of Spruce Bark Beetle (Ips typographus) Infestations on Downed Trees after Severe Windthrow Branislav Hroššo 1,2, Pavel Mezei 1,3,*, Mária Potterf 4,5, Andrej Majdák 1, Miroslav Blaženec 1, Nataliya Korolyova 6 and Rastislav Jakuš 1,6 1 Institute of Forest Ecology, Slovak Academy of Sciences, Štúrova 2, 960 53 Zvolen, Slovakia; branoh@centrum.sk (B.H. Conifer Bark Beetle Facts Black Turpentine Beetle Damage and Signs of Infestation Prevention/Management Southern pine beetle Ips or Engraver Beetle Bark Beetle Facts Bark beetles emit a chemical signal, or aggregation pheromone, which attracts more bark beetles to the tree under attack. spruce (the hybrid cross - Sitka x white) and Sitka spruce but rarely attacks black spruce. The spruce beetle can seriously damage large-diameter spruce during outbreaks, which can last 2-5 years. Spruce Bark Beetle Explosion & Storm Damaged Timber – Europe’s Rapidly Changing Global Trade Flows. According to Mellanskog the extent in Sweden is alarming with approximately 4.5 million cubic metres of damaged … In undisturbed forests, bark beetles serve the purpose of hastening the recycling and decomposition of dead and dying wood and renewing the forest. These outbreaking spe-cies are the ones of most concern to forestry, and have landscape-scale social, economic and ecologi-cal consequences. Spruce beetle damage detected during aerial detection survey in 2017 in Southcentral Alaska. The first step to minimize further damage is to remove infested trees. The European spruce bark beetle has caused severe damage in spruce forests in Central Europe, particularly in the Czech Republic and Slovakia. Together with storm events, bark beetle outbreaks are thought by some to be one of the most important natural disturbances in this region. The Douglas-fir beetle (Dendroctonus pseudotsugae) is the principal killer of mature Douglas-fir in B.C. The spruce bark beetle prefers to feed on white, Lutz . Spruce beetles spend most of their lives under the bark of trees. Management For more information about aerial or ground survey standards, data or initiatives, click here. Larger eght-toothed European spruce bark beetles are often associated with windblown, damaged and recently felled spruce trees, where they build up numbers before moving on to attack adjacent live trees. Spruce beetle damage results in the loss of 333 to 500 million board feet of spruce saw timber annually. The European spruce bark beetle has a significant impact on both the ecological and economic environment of Norway spruce forests. Therefore the wood remains undamaged by the beetles and useable for construction for some time. The spruce beetle,Dendroctonus rufipennis (Kirby), is the most significant natural mortality agent of mature spruce. Courtesy of Dan West Spruce Beetle damage in the San Juan National Forest in 2018. 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