scholarly journals Small beetle, large-scale drivers: how regional and landscape factors affect outbreaks of the European spruce bark beetle

2015 ◽  
Vol 53 (2) ◽  
pp. 530-540 ◽  
Author(s):  
Rupert Seidl ◽  
Jörg Müller ◽  
Torsten Hothorn ◽  
Claus Bässler ◽  
Marco Heurich ◽  
...  
Keyword(s):  
Bark Beetle ◽  
Large Scale ◽  
Spruce Bark Beetle ◽  
Spruce Bark ◽  
Landscape Factors ◽  
European Spruce Bark Beetle

The first study on the bacterial flora of the european spruce bark beetle, Dendroctonus micans (Coleoptera: Scolytidae)

Biologia ◽  
2006 ◽  
Vol 61 (6) ◽  
Author(s):  
Hüseyin Yilmax ◽  
Kazım Sezen ◽  
Hatice Kati ◽  
Zihni Demirbağ
Keyword(s):  
Bark Beetle ◽  
Micrococcus Luteus ◽  
Bacterial Flora ◽  
Biochemical Properties ◽  
Identification System ◽  
Dendroctonus Micans ◽  
Microbial Identification ◽  
Spruce Bark Beetle ◽  
Spruce Bark ◽  
European Spruce Bark Beetle

AbstractThe European spruce bark beetle, Dendroctonus micans Kugelann (Coleoptera, Scolytidae), is one of the most serious pests of oriental spruce (Picea orientalis L.) in Turkey. In this study, we investigated bacterial flora of D. micans collected from different populations of the forests of Eastern Black Sea Region of Turkey from 2002 to 2004. Seven different bacteria were isolated from healthy, diseased and dead specimens based on the color of colony and morphology. According to morphological, physiological and biochemical properties, metobolic enyzme profile by BIOLOG microtiter plate system, and total cellular fatty acid profile by Microbial Identification System (MIS), isolates were identified as Micrococcus luteus, Bacillus thuringiensis subsp. morrisoni, Serratia grimesii, Enterobacter cloaceae, Enterobacter intermedius, Streptococcus sp. and Pseudomonas putida. This is the first study on the bacterial flora of D. micans.

Choice or constraint: Plasticity in overwintering sites of the European spruce bark beetle

2014 ◽  
Vol 328 ◽  
pp. 20-25 ◽  
Author(s):  
Kai Dworschak ◽  
Daniel Meyer ◽  
Axel Gruppe ◽  
Reinhard Schopf
Keyword(s):  
Bark Beetle ◽  
Spruce Bark Beetle ◽  
Spruce Bark ◽  
European Spruce Bark Beetle

scholarly journals Is it possible and necessary to control European spruce bark beetle Ips typographus (L.) outbreak in the Białowieża Forest?

2017 ◽  
Vol 78 (1) ◽  
pp. 88-92 ◽  
Author(s):  
Jacek Hilszczański ◽  
Jerzy R. Starzyk
Keyword(s):  
Bark Beetle ◽  
Ips Typographus ◽  
Natural Forests ◽  
Forest Research ◽  
Research Papers ◽  
Spruce Bark Beetle ◽  
Białowieża Forest ◽  
Spruce Bark ◽  
European Spruce Bark Beetle

Abstract In response to the information published in ‘Forest Research Papers’ (vol. 77(4), 2016), regarding the problem of the European spruce bark beetle Ips typographus (L.) in the Białowieża Forest, we present our viewpoint on this issue. The role of the European spruce bark beetle in the Białowieża Forest is discussed based on the experience gained in Europe’s forests. We present the effects of I. typographus outbreaks on forest biodiversity as well as outbreak mitigation in the context of the processes taking place in semi-natural forests.

scholarly journals The Effect of Sanitation Felling on the Spread of the European Spruce Bark Beetle—An Individual-Based Modeling Approach

2021 ◽  
Vol 4 ◽  
Author(s):  
Bruno Walter Pietzsch ◽  
Felix Johannes Peter ◽  
Uta Berger
Keyword(s):  
Bark Beetle ◽  
Dispersion Model ◽  
Managed Forests ◽  
Managed Forest ◽  
Spruce Bark Beetle ◽  
Spruce Bark ◽  
Management Measures ◽  
Infestation Pattern ◽  
The Impact ◽  
European Spruce Bark Beetle

Sanitation felling is considered as the main measure to protect managed forests from damage due to outbreaks of the European Spruce Bark Beetle. In this study, we investigate the effectiveness of sanitation felling on stopping the spread of a bark beetle population from an un-managed to a managed forest area. For this, we advance an individual-based dispersion model of Ips typographus by adding the influence of wind on the beetle dispersion and by importing GIS data to simulate real world forests. To validate the new model version and to find reasonable parameter values, we conduct simulation experiments to reproduce infestation patterns that occurred in 2015, 2016, and 2017 within the national park Saxon Switzerland, Germany. With the then calibrated model IPS-SPREADS (Infestation Pattern Simulation Supporting PREdisposition Assessment DetailS), we investigate the impact of different factors such as the distance between beetle source trees and the forest border on the amount of damage within the managed forest stand and test the effectiveness of different levels of sanitation felling and its point of action on reducing the amount of damaged trees. As expected, the results of the model calibration show that the direction of wind plays an important role for the occurring infestation patterns and that bark beetle energy reserve is reduced during mass outbreaks. The results of the second experiment show that the main drivers for the amount of damaged trees are the primary attractiveness and the distance to beetle source trees. Sanitation felling effectiveness is highest when performed near the beetle source trees, with considerably high felling intensities and if there is at least some distance to the managed forest. IPS-SPREADS can be used in future studies as a tool for testing further management measures (e.g., pheromone traps) or to assess the risk for bark beetle infestations of forest areas near to wind-felled or already infested trees.

Dendroecological detection of spruce bark beetle outbreaks in northwestern Colorado

2000 ◽  
Vol 30 (11) ◽  
pp. 1788-1798 ◽  
Author(s):  
Karen S Eisenhart ◽  
Thomas T Veblen
Keyword(s):  
Tree Ring ◽  
Bark Beetle ◽  
Large Scale ◽  
Tree Mortality ◽  
Subalpine Forests ◽  
Spruce Bark Beetle ◽  
Engelmann Spruce ◽  
Spruce Bark ◽  
Photographic Evidence ◽  
Spruce Beetle

Episodic outbreaks of Dendroctonus rufipennis (Kirby), the spruce bark beetle, have greatly influenced the structure of subalpine forests in northern Colorado. During the 1940s, much of the subalpine zone of northwestern Colorado was severely affected by beetle outbreak; also, tree-ring and photographic evidence suggest that large-scale outbreaks occurred in the 19th century. The present study focused on tree-ring methods to examine the regional extent and synchrony of pre-20th-century beetle outbreaks in northwestern Colorado. Results from examination of both live and dead Engelmann spruce (Picea engelmannii Parry ex Engelm.) tree rings in nine stands were compared with results of previous tree-ring studies in the same region. Evidence of past canopy disturbance included episodes of tree mortality in conjunction with sustained increases in radial growth rates. We identified regional outbreaks of spruce beetle by synchronous and sustained growth release in trees from disjunct stands. These new tree-ring records, along with previously published records, indicate that severe and widespread canopy disturbances, probably spruce beetle outbreaks, affected northwestern Colorado in 1716-1750, 1827-1845, 1860-1870, and 1940-1960. These results support earlier findings that large-scale outbreaks of spruce beetle have long been an important component of the dynamics of subalpine forests in Colorado.

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