Seedling mortality caused byHylastes cuniculariusEr. (Coleoptera, scolytidae) inPicea abiesplantations in Northern Sweden
作者:
Åke Lindelöw,
期刊:
Scandinavian Journal of Forest Research
(Taylor Available online 1992)
卷期:
Volume 7,
issue 1-4
页码: 387-392
ISSN:0282-7581
年代: 1992
DOI:10.1080/02827589209382731
出版商: Taylor & Francis Group
关键词: Black spruce beetle;Hylobius abietis;large pine weevil;seedling mortality;Norway spruce.
数据来源: Taylor
摘要:
Mortality ofPicea abiesseedlings caused byHylastes cuniculariuswas studied by analysing damage reports and by repeatedly inspecting 12 000 individually marked seedlings in 59 plantations. The findings indicated thatH. cuniculariuscaused more damage in the northern parts of Sweden than in the more southern parts. Feeding byH. cuniculariuswas the most frequent cause of spruce seedling death in plantations during 4 to 6 years after cutting of the previous stand. Although accumulated seedling losses sometimes exceeded 30%, yearly loss rates were generally moderate. The long period over which damage can occur is one of the reasons whyH. cuniculariushas rarely been identified as an important cause of seedling mortality in spruce plantations.
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