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Spruce bark beetle (Ips typographus L.) infestation and Norway spruce status: is there a causal relationship?
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SYSNO ASEP 0170706 Document Type J - Journal Article R&D Document Type The record was not marked in the RIV Subsidiary J Ostatní články Title Spruce bark beetle (Ips typographus L.) infestation and Norway spruce status: is there a causal relationship? Author(s) Moravec, Ivo (UEK-B)
Cudlín, Pavel (UEK-B) RID, SAI, ORCID
Polák, T. (CZ)
Havlíček, František (UEK-B)Source Title Silva Gabreta. - : Správa Národního parku a Chráněné krajinné oblasti Šumava - ISSN 1211-7420
Roč. 8, - (2002), s. 255-264Number of pages 10 s. Language eng - English Country CZ - Czech Republic Keywords bark beetle infestation ; crown status ; Picea abies Subject RIV GK - Forestry R&D Projects OK 389 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z6087904 - UEK-B Annotation Outbreaks of the spruce bark beetle (Ips typografus L.), normally a secondary pest in Norway spruce forests, can be very rapid under favourable environmental conditions. In the Šumava National Park the spruce bark beetle has always been a significant factor damaging spruce stands that become physiologically weakened by negative effects of wind, glazed frost, snow, air pollution, etc. Forest stand edges infested by spruce bark beetle were investigated in the Morva forest district in the controlled natural Zone II in years 1999,2000 and 2001. Selected tree crown transformation features such as total defoliation, primary structure defoliation, percentage of secondary shoots, and crown structure transformation stage were determined. Trees were grouped by bark beetle invasion history, total defoliation and crown structure transformation.Trees with higher crown structure transformation, i.e. trees with more acute need of replacing the defoliated parts of asssimilatory organs, were significantly more frequently infested by eight-toothed spruce bark beetles. Workplace Global Change Research Institute Contact Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268 Year of Publishing 2004
Number of the records: 1