Hotter drought increases population levels and accelerates phenology of the European spruce bark beetle Ips typographus
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41320%2F25%3A102975" target="_blank" >RIV/60460709:41320/25:102975 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0378112725001239?pes=vor&utm_source=clarivate&getft_integrator=clarivate" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0378112725001239?pes=vor&utm_source=clarivate&getft_integrator=clarivate</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.foreco.2025.122615" target="_blank" >10.1016/j.foreco.2025.122615</a>
Alternative languages
Result language
angličtina
Original language name
Hotter drought increases population levels and accelerates phenology of the European spruce bark beetle Ips typographus
Original language description
Bark beetle-induced tree mortality has increased strongly in Europe in recent years. Bark beetle populations are highly sensitive to temperature, and drought weakens tree defenses against beetle attacks. Yet, the compound effects of drought and heat (termed hotter drought) remain poorly quantified, even though climate change increases their joint occurrence. Here, we analyzed data from a regional-scale network of pheromone-baited Ips typographus traps (158 traps across 7 Mha in southeast Germany, with 67.5 & sdot;million beetles caught between 2015 and 2021), contrasting the unprecedented hotter drought period of 2018-2020 with non-drought years. Our objectives were (i) to assess the effect of hotter drought on bark beetle population dynamics, (ii) to quantify changes in spatial patterns during hotter drought, and (iii) to investigate how well trap data can explain observed tree mortality. Bark beetle population levels were strongly driven by temperature and drought, with an annual increase of approximately 2000 beetles per trap per degrees C under drought conditions (SPEI = -1). Furthermore, critical phenological thresholds were reached 7 days earlier for aggregation and 4 days earlier for peak swarming timing per degrees C increase in temperature. In drought years, I. typographus population levels were autocorrelated across hundreds of kilometers. Trap data explained between 37 % and 49 % of observed bark beetle mortality, highlighting that pheromone trap networks are a useful tool for monitoring and managing forest risk. We conclude that hotter drought intensifies and extends mass outbreaks of the European spruce bark beetle, suggesting the emergence of novel patterns of disturbance.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
40102 - Forestry
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Forest Ecology and Management
ISSN
0378-1127
e-ISSN
0378-1127
Volume of the periodical
585
Issue of the periodical within the volume
2025
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
11
Pages from-to
1-11
UT code for WoS article
001446904000001
EID of the result in the Scopus database
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