Early detection of bark beetle (Ips typographus) infestations by remote sensing – A critical review of recent research

Forest Ecology and Management, Год журнала: 2024, Номер 556, С. 121595 - 121595

Опубликована: Фев. 16, 2024

Bark beetle disturbances increasingly threaten structure and functionality of temperate boreal forests globally. The early detection bark beetle-infested trees, i.e. before beetles' emergence from the breeding tree, is essential for an effective outbreak mitigation. Terrestrial control surveys as traditionally employed infestation detection, however, are resource-intensive approach their limits in difficult terrain during mass outbreaks. Developments remote sensing algorithms giving hope that early-infested trees will be detectable remotely, thereby improving success management efficacy. Yet, a comprehensive quantitative evaluation approaches currently being developed lacking to date. This review synthesises state-of-the-art recent research on (or green-attack) by sensing, places it context with underlying biological constraints, technical opportunities potential applications. Since each beetle-host tree system has specific characteristics detectability, we focus greatest impact European forests, spruce (Ips typographus), which attacks Norway (Picea abies). By screening published within period 2000–2022, included 26 studies our analyses. All reviewed were purely exploratory, testing variety data and/or classification relatively limited spatial temporal coverage. Among tested platforms sensor types, satellite multispectral imagery most frequently investigated. Promising spectral wavelength range or index highly varied among regions. Timeliness accuracy found insufficient efficient management, regardless platform, type, resolution applied. main reasons preventing better performance include rapid development I. typographus combination delayed variable vitality response crown, frequent cloud cover spruce-dominated regions across Europe. In conclusion, current survey methods cannot yet replace terrestrial timely management. Nevertheless, they might supportive either back-up regular surveys, situations, e.g. detect hibernation accessibility, extensively managed without sufficient capacity. We suggest term 'early detection' used consistently synonym 'pre-emergence avoid ambiguity. Finally, provide recommendations future based lessons learned analysed, namely use more rigorous targeted study design, ensure interdisciplinarity, communicate results explicitly.

Язык: Английский

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Impacts on and damage to European forests from the 2018–2022 heat and drought events

Natural hazards and earth system sciences, Год журнала: 2025, Номер 25(1), С. 77 - 117

Опубликована: Янв. 6, 2025

Abstract. Drought and heat events in Europe are becoming increasingly frequent due to human-induced climate change, impacting both human well-being ecosystem functioning. The intensity effects of these vary across the continent, making it crucial for decision-makers understand spatial variability drought impacts. Data on drought-related damage currently dispersed scientific publications, government reports, media outlets. This study consolidates data European forests from 2018 2022, using Europe-wide datasets including those related crown defoliation, insect damage, burnt forest areas, tree cover loss. data, covering 16 countries, were analysed four regions, northern, central, Alpine, southern, compared with a reference period 2010 2014. Findings reveal that all zones experienced reduced vitality elevated temperatures, varying severity. Central showed highest vulnerability, coniferous deciduous trees. southern zone, while affected by loss, demonstrated greater resilience, likely historical exposure. northern zone is experiencing emerging impacts less severely, possibly site-adapted boreal species, Alpine minimal impact, suggesting protective effect altitude. Key trends include (1) significant loss zones; (2) high levels despite 2021 being an average year, indicating lasting previous years; (3) notable challenges central Sweden bark beetle infestations; (4) no increase wildfire severity ongoing challenges. Based this assessment, we conclude (i) highly vulnerable heat, even resilient ecosystems at risk severe damage; (ii) tailored strategies essential mitigate change forests, incorporating regional differences resilience; (iii) effective management requires harmonised collection enhanced monitoring address future comprehensively.

Язык: Английский

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Direct and mediated impacts of mixed forests on Norway spruce infestation by European bark beetle Ips typographus

Forest Ecology and Management, Год журнала: 2024, Номер 569, С. 122184 - 122184

Опубликована: Июль 31, 2024

Язык: Английский

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Ecology, floristic-vegetational features and future perspectives of spruce forests affected by Ips typographus: insights from the Southern Alps

Research Square (Research Square), Год журнала: 2025, Номер unknown

Опубликована: Янв. 28, 2025

In recent years, many spruce (Picea abies) forests have been severely affected by bark beetle (Ips typographus) outbreaks in the Southern Alps, but their ecological impacts remain poorly studied. This research analyzed distribution, ecological, and floristic-vegetational characteristics of recently upper basin Oglio River (Northern Italy) developed a MaxEnt model to predict severe insect attacks coming decades. The results showed that are located exclusively sub-mountain mountain belts (below 1,600 m a.s.l.) 85% them found areas with high annual solar radiation (> 3,500 MJ m⁻²). predictive for susceptible proved highly accurate (AUC = 0.91) was primarily defined mean temperature dry winter quarter (contribution: 80.1%), values between − 2.5 2.5°C being particularly suitable pest. According model, more than 58% current study area will exhibit susceptibility (probability > 0.7) 2080. analysis plant communities 11 beetle-affected indicated thermophilic significantly different forest (in both floristic physiognomic terms) expected develop compared those pre-disturbance. Furthermore, coverage/density snags appears accelerate succession, enabling establishment mature shorter time frame.

Язык: Английский

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Modelling the impact of stand type, tree traits, and temperature on norway spruce survival under bark beetle attack in Germany

Forest Ecology and Management, Год журнала: 2025, Номер 586, С. 122713 - 122713

Опубликована: Апрель 12, 2025

Язык: Английский

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Bark Beetles as Microclimate Engineers – Thermal Characteristics of Infested Spruce Trees at the Canopy Surface and Below the Canopy

Опубликована: Янв. 1, 2025

Язык: Английский

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Ecology, Floristic–Vegetational Features, and Future Perspectives of Spruce Forests Affected by Ips typographus: Insight from the Southern Alps

Plants, Год журнала: 2025, Номер 14(11), С. 1681 - 1681

Опубликована: Май 31, 2025

In recent years, many spruce (Picea abies (L.) H. Karst., Pinaceae) forests have been severely affected by bark beetle (Ips typographus L., Coleoptera: Curculionidae) outbreaks in the Southern Alps, but their ecological impacts remain poorly studied. We analyzed distribution, ecological, and floristic–vegetational characteristics of recently upper basin Oglio River (Northern Italy) developed a MaxEnt model to map with bioclimate more prone severe insect attacks coming decades. The results showed that are located exclusively submountain mountain belts (below 1600 m a.s.l.) 85% them found areas high annual solar radiation (>3500 MJ m−2). predictive for susceptible proved highly accurate (AUC = 0.91) was primarily defined mean temperature dry winter quarter (contribution: 80.1%), values between −2.5 2.5 °C being particularly suitable pest. According model, than 58% current study area will exhibit susceptibility (probability > 0.7) 2080. analysis plant communities 11 beetle-affected indicated thermophilic significantly different forest (in both floristic physiognomic terms) expected develop compared those pre-disturbance. Furthermore, coverage snags/standing dead trees appears accelerate succession, enabling establishment mature shorter time frame.

Язык: Английский

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Early detection of bark beetle infestation using UAV-borne multispectral imagery: a case study on the spruce forest in the Czech Republic

Frontiers in Forests and Global Change, Год журнала: 2024, Номер 7

Опубликована: Апрель 25, 2024

Over the last decade, biotic disturbances caused by bark beetles have represented a serious environmental and economic issue in Central Europe. Great efforts are expended on early detection management of beetle infestation. Our study analyses time series UAV-borne multispectral imagery 250-ha forest Vysočina region Czech Republic. The site represents typical European spruce with routine silvicultural management. data was acquired three times during vegetation period, specifically (a) before swarming, (b) at stage infestation, (c) post-abandon phase, i.e., after most offspring left trees. spectral reflectance values indices calculated from orthorectified radiometrically calibrated imageries were statistically analyzed quadratic discriminant analysis (QDA). shows that healthy infested trees could be distinguished especially using NIR-related (NDVI BNDVI our case). Detecting is more significant than bands increases increasing verified usability for infestation level individual Thus, these methods can contribute to precise effective local level.

Язык: Английский

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Sustainable development: Evaluation and forecasting of Norway spruce production and growing stock in Slovakia in the context of bioeconomy

Central European Forestry Journal, Год журнала: 2024, Номер 70(1), С. 11 - 18

Опубликована: Март 1, 2024

Abstract The paper deals with the identification of long-term potential forest stands prevailing Norway spruce representation and elaboration a forecast development growing stock felling possibilities until 2050. analysis historical data has confirmed decrease in area by 13.2% since 2010 its 16.4% over same period. These developments indicate reduction coming decades. evaluation 2012 showed that planned volume was exceeded 11.3 mil. m 3 , i.e. annually at average 1.25 . This exceeding caused incidental felling, which accounted for an 84% total felling. 2050 derived differently two scenarios based on actual cutting percentages decade 2012–2020 (scenario A) according to B). In case scenario A, there would be significant from current 114.8 36% 2040. B, more modest. Ten-year under A will result amount 42.6 (first decennium), 32.0 (second decennium) 25.7 (third decennium).

Язык: Английский

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Balancing resolution and accessibility: Responding to Korznikov and Altman (2024) on forest disturbance assessment

Forest Ecology and Management, Год журнала: 2024, Номер 569, С. 122169 - 122169

Опубликована: Авг. 7, 2024

Язык: Английский

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