Ecology professor Christer Björkman says the larva from hell has the greatest chance of establishing itself in Sweden through imports of oak.
The larva from hell continues to create chaos in Denmark. The professor highlights the risk from tree transports from other countries.
Björkman explains that every imported tree can carry eggs with it. He points especially to oak as the most likely entry route into Sweden.
The statement comes amid the ongoing situation in the neighboring country.
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High levels of birch pollen are spreading northward in Sweden over the coming days. At the same time the risk of oak pollen is rising in the southern parts of the country, according to the Swedish Museum of Natural History.
The pine processionary caterpillar has taken over areas on Gotland and Öland. Residents report severe itching and rashes from the larvae.
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The Swedish Board of Agriculture reports more cases of European foulbrood in Kalmar County. The county board urges beekeepers to stay vigilant.
Cientistas no sul de Vermont começaram a infectar milhares de jovens olmos americanos com um fungo letal na tentativa de identificar árvores resistentes à doença. O esforço em um local de 28 acres em Benson visa criar uma população da espécie mais diversificada e tolerante.
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Youths aged 17 to 25 gathered outside Borlänge to create better conditions for threatened wild bees. The effort took place in 30-degree heat at Trumslagargropen near Rommehedslägret.
Residents in Björklinge have been disturbed for several months each year by rooks nesting in the trees. Uppsala Municipality is now responding to the complaints and will begin work on an action plan next week.
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Carvalhos infestados por lagartas atrasam o brotamento de suas folhas em três dias na primavera seguinte, deixando os insetos sem alimento e reduzindo os danos. Pesquisadores usaram dados de satélite para descobrir esse mecanismo de defesa em florestas alemãs. A descoberta sugere que as árvores se adaptam ativamente aos ataques de herbívoros.