Landscape-scale Ips typographus attack dynamics: from monitoring plots to GIS-based disturbance models

ES4LUCC: A GIS-tool for remotely monitoring landscape dynamics

Given the potential impacts of land cover changes on surface processes, accurate mapping of landscape dynamics is a crucial task in environmental monitoring. The use of commercial software for remote sensing of landscape changes requires appropriate expertise in sensor technology and computing resources that are not always available to decision makers. This paper presents the development of an ...

A GIS-Based Landscape Scale Model for Native Bee Habitat

Recapture of dispersing bark beetle Ips typographus L. (Col., Scolytidae) in pheromone-baited traps: regression models

Parent (re-emerged) spruce bark beetles (Ips rypographus L., Col.; Scolytidae) beginning a second host-seeking flight were collected in pheromone-baited traps. These beetles were marked with fluorescent powder of different colors and released from a point source (9-16 June 1989) within a spruce, Picea abies L., forest (Jurbarkas forest district, Lithuania). Some of the marked beetles were recap...

The mites associated with ips typographus in Sweden

Twenty-four species of mites were found associated with Ips typographus (Linnaeus) collected from pheromone traps in Sweden, bringing to 38 the total recorded for this scolytid. Because three of the species are parasites, it may be possible to use them in biological control of I. typographus. Couplets from an earlier key to these mites in south Germany have been modified to include three of the...

Population Genetics of Spruce Bark Beetle Ips typographus (Col., Scolytidae) and Related Ips Species1

Enzyme electrophoresis proved to be a useful method to study population genetic aspects in Ips typographus (L.) because of three highly polymorphic loci. Aspartate aminotransferase locus-2 (Aat-2), physiologically involved in the transfer of aminogroups, has six alleles per population. Amylase locus1 (Amy-1), physiologically involved in the hydrolysis of starch, has 10 alleles per population, a...