The Resistance of Subfossil Heartwood of Oak (Quercus Robur L.) from Two Sites in Poland to Destruction by Subterranean Termites

biodegradation termites soil organisms waterlogged oak wood
["Krajewski, Adam","Witomski, Piotr","Drozdzek, Michal"] 2024-01-01 期刊论文
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The resistance of subfossil heartwood of European oak (Quercus robur L.) was examined in experiments conducted in accordance with the ASTM D 3345-08: 2009standard. The subfossil heartwood came from Do & lstrok;hobrody (5100 +/-50 BC) and Pu & lstrok;tusk (13th-14th century). Subfossil heartwood of Q. robur is more susceptible to deterioration by subterranean termites than the recent heartwood of this species. The average weight losses of subfossil heartwood of oak were 0.306 g (Do & lstrok;hobrody) and 0.475 g (Pu & lstrok;tusk). The average degree of damage to the subfossil heartwood was at the level of moderate attack, penetration. The differences in the degree of damage and weight losses of wood blocks for subfossil heartwood from Do & lstrok;hobrody and Pu & lstrok;tusk were statistically insignificant. Termite mortality was slight grade (Pu & lstrok;tusk) or slight/moderate grade (Do & lstrok;hobrody).
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