Post-storm surveys reveal large-scale spatial patterns and influences of site factors, forest structure and diversity in endemic bark-beetle populations

Gilbert, Marius; Nageleisen, L-M; Franklin, Anne; Grégoire, Jean

doi:10.1007/s10980-004-0465-y

Cited by 47 publications

(30 citation statements)

References 38 publications

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“…Climatic events such as storms, lightning strikes or droughts are known to favour the spread of some forest pest insects like bark beetles (Coulson et al, 1999;Wichmann and Peter Ravn, 2001;Eriksson et al, 2005;Gilbert et al, 2005) whose spatial distribution and associated economic consequences are scaledependent. As a consequence, forest damage assessment and monitoring often entail a multi-scale approach (Powers et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

“…In that region the pine stenographer beetle (Ips sexdentatus Boern.) can occur as a severe pest showing complex spatial patterns with various degrees of patchiness (Bouhot et al, 1988;Gilbert et al, 2005). Our approach was to test such a roadside-based sampling in a 1300 ha forest in which all attacked trees were spatially located by means of colour-infrared aerial photography.…”

Section: Introductionmentioning

confidence: 99%

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Adaptive roadside sampling for bark beetle damage assessment

Samalens¹,

Rossi²,

Guyon³

et al. 2007

Forest Ecology and Management

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Adaptive roadside sampling for bark beetle damage assessment

Samalens¹,

Rossi²,

Guyon³

et al. 2007

Forest Ecology and Management

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“…This study follows the heavy storms of December 1999 in France, which struck about 140 millions m 3 of timber at the national scale (Inventaire Forestier National: http://www.ifn.fr/ pages/fr/tempetes/index.html) and triggered bark-beetle outbursts in all affected areas [10]. We tested the possibility of using comparative T. formicarius/Ips typographus catches as indicators of Ips typographus infestation trends but, whilst in USA only two variables are sufficient to predict Dendroctonus infestation dynamics (the mean numbers of SPB/trap/day and the relative abundance of SPB in relation to predators [1]), it was expected that, in the more complex French stands, a similar model would also need to account for tree species diversity.…”

Section: Introductionmentioning

confidence: 99%

Predator/prey ratios: a measure of bark-beetle population status influenced by stand composition in different French stands after the 1999 storms

2006

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-This study presents the results of a four-year trapping experiment in stands heavily infested by Ips typographus following the 1999 storms in north-eastern France. Ten bottle-traps were stapled on dead spruces or on broad-leaves in five spruce stands, among which two comprised pines, a species particularly favourable for the pupation of the predator, Thanasimus formicarius. The phenology of T. formicarius closely reflected that of its prey in all stands. We show that the proportion of pines within a 500 m radius is the main variable influencing predator/prey ratios, and that this variable alone outperforms other forest composition indices such as the Shannon diversity index estimated using all tree categories, or reduced to integrate only three categories (spruce, pine, others). These results are discussed with regard to the possible role of host trees and host-tree diversity in both insects' life-cycles and how the T. formicarius/Ips typographus ratios could be used to describe the status of Ips typographus infestations. biodiversity index / biological control / Ips typographus / Scolytidae / Shannon index / Thanasimus formicarius / Cleridae Résumé -Les ratios prédateur/proies : une mesure des populations de scolytes influencée par la composition du peuplement dans différents sites français après les tempêtes de 1999. Cette étude présente les résultats de quatre années de piégeage dans des peuplements fortement infestés par Ips typographus suite aux tempêtes de 1999 dans le nord-est de la France. Dix pièges-bouteilles ont été agrafés sur des épicéas morts ou des feuillus dans cinq pessières, dont deux comprenaient des pins, arbres particulièrement favorables à la nymphose du prédateur. La phénologie de T. formicarius a étroitement reflété celle de sa proie dans tous les sites. Nous montrons que la proportion de pins dans un rayon de 500 m est la principale variable influençant les ratios prédateur/proies, et que cette variable seule surpasse les autres indices du paysage, tels que l'indice de diversité de Shannon estimé avec toutes les catégories d'arbres, ou réduit seulement à trois catégories (pins, épicéas, autres). Ces résultats sont discutés en fonction du rôle éventuel des arbres hôtes et de leur diversité en ce qui concerne les cycles vitaux des deux insectes, ainsi que le moyen d'utiliser les ratios T. formicarius/Ips typographus pour décrire les infestations d'Ips typographus. index de biodiversité / contrôle biologique / Ips typographus / Scolytidae / index de Shannon / Thanasimus formicarius / Cleridae

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“…The European spruce bark beetle (Ips typographus) is one of the most destructive pests of Norway spruce and it has caused severe and extensive economic and ecological losses especially in Central Europe after the 1990s (Nageleisen, 2001;Schelhaas et al, 2003;Gilbert et al, 2005). It belongs to the family of Coleoptera:Curculionidae as the subfamily Scolytinae with several other bark beetle species of which Ips typographus is the most destructive in Europe.…”

Section: Bark Beetlesmentioning

confidence: 99%

Integrating mechanistic disturbance models and stand dynamics of Norway spruce

Honkaniemi¹

2017

Diss. For.

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Disturbances, caused by abiotic and biotic agents, are discrete events in time disrupting the ecosystem and resulting in the reduction of plant biomass. They play a key role in forest ecosystems, but in the managed forests pose a risk to forest productivity. The projected climate change is expected to increase the risk of various disturbances in the boreal forests. In Europe, the major risks threatening the Norway spruce (Picea abies) dominated stands are caused by Heterobasidion root rot, wind storms, and European spruce bark beetle (Ips typographus). Heterobasidion root rot causes growth losses, mortality and decreases the timber quality. It also decreases the mechanical stability of the tree against wind load and increases the stand vulnerability for wind damages. Bark beetles benefit from the low resistance breeding material, i.e., wind damaged trees, when the population is low and can emerge as outbreaks in the right conditions. This thesis presents a simulation framework WINDROT to simulate the interactive dynamics of these disturbance agents. WINDROT consists of four simulation models, each responsible for either the dynamics of the host or one of the disturbance agents. A stand level decision support system, MOTTI, simulates the growth and dynamics of tree stands as affected by forest management, and provides inputs for mechanistic models Hmodel, HWIND and BBDYN simulating the dynamics and effects of disturbance agents. The model performance analyses in tree and stand scale showed that; i) the Heterobasidion dynamics are driven by primary and secondary infections on large stumps; ii) increasing intensity of Heterobasidion root rot damages increases the risk for wind damages; and iii) the increasing wind damages increased the subsequent bark beetle damages. The simulation framework can be used to analyze the sensitivity of different forest management regimes to the risks posed by these damages alone and in various combinations.

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Post-storm surveys reveal large-scale spatial patterns and influences of site factors, forest structure and diversity in endemic bark-beetle populations

Cited by 47 publications

References 38 publications

Adaptive roadside sampling for bark beetle damage assessment

Adaptive roadside sampling for bark beetle damage assessment

Predator/prey ratios: a measure of bark-beetle population status influenced by stand composition in different French stands after the 1999 storms

Integrating mechanistic disturbance models and stand dynamics of Norway spruce

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