Impacts of climate-driven insect population change on sawtimber provisioning, carbon sequestration, and water retention: a case study of bark beetle outbreaks in the USA

Frontiers in Forests and Global Change, Journal Year: 2025, Volume and Issue: 7

Published: Jan. 6, 2025

A key issue in landscape management, whether public or private, is the mitigation of disturbance events that impact vegetation, ecosystem health, and thus services (ESs). Although many studies have found significant tree mortality due to insect infestations, there still insufficient understanding how these infestations alter ESs their associated economic values. Addressing this research gap can assist forest managers decision-makers refining implementing adaptive management practices policies, while enhancing resilience forests ESs. We investigated impacts bark beetle outbreaks on three (timber provisioning, water retention, carbon sequestration) Lake Tahoe region Northern California Nevada. Using simulation model LANDIS-II, we examined differences between a business-as-usual scenario an enhanced with respect amount aboveground biomass impacted by outbreaks. Since infestation also influenced climate, each two scenarios considered different climate scenarios: average historical (no change); warmer, wetter from Model for Interdisciplinary Research Climate (MIROC); hotter, drier Centre National de Recherches Météorologiques (CNRM). Results show warmer results more than cooler resulting greater negative The estimated loss ES value approximately $0.2 $0.8 million USD per year. Enhanced capable prevent damages trees

Language: Английский

---

Navigating the Semiochemical Landscape: Attraction of Subcortical Beetle Communities to Bark Beetle Pheromones, Fungal and Host Tree Volatiles

Insects, Journal Year: 2025, Volume and Issue: 16(1), P. 57 - 57

Published: Jan. 9, 2025

Subcortical beetle communities interact with a wide range of semiochemicals released from different sources, including trees, fungi, and bark pheromones. While the attraction beetles, their insect predators, competitors to pheromones is commonly studied, these other sources remains poorly understood. We tested wood-boring beetles predators host stress volatiles, fungal mountain pine lure in field. Host volatiles were derived lodgepole trees stressed by three symbionts two common phytopathogens. Our results showed that particularly show preference for combination 2-methyl-1-butanol its lures. Without addition lures, was also identified as key volatile Cerambycidae Buprestidae families. Predators Elateridae Staphylinidae families healthy tree profiles. These findings suggest warrant further field testing potential use monitoring management subcortical populations.

Language: Английский

---

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

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 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.

Language: Английский

---

The future is uncertain: Wind resilient forests in a changing climate

Forest Ecology and Management, Journal Year: 2025, Volume and Issue: 581, P. 122556 - 122556

Published: Feb. 13, 2025

Language: Английский

---

Mapping spatiotemporal mortality patterns in Spruce mountain forests using Sentinel-2 data and environmental factors

Ecological Informatics, Journal Year: 2025, Volume and Issue: unknown, P. 103074 - 103074

Published: Feb. 1, 2025

Language: Английский

---

Hotter drought increases population levels and accelerates phenology of the European spruce bark beetle Ips typographus

Forest Ecology and Management, Journal Year: 2025, Volume and Issue: 585, P. 122615 - 122615

Published: March 12, 2025

Language: Английский

---

How to Define Spacing Among Forest Trees to Mitigate Competition: A Technical Note

Biology, Journal Year: 2025, Volume and Issue: 14(3), P. 296 - 296

Published: March 15, 2025

Establishing an optimum range of inter-species spacing that reduces competition among trees and mitigates the effects drought is a critical yet complex challenge in forest management. Stand density plays crucial role functioning by regulating resource allocation within individual trees. Higher stand densities have been shown to reduce sap velocities, indicating intensified for water other resources. However, determining precise minimizes while maintaining ecosystem balance remains unclear. In this study, conducted temperate Norway spruce forests at altitude 400–500 m Czech Republic, we propose novel technique define tree competitive interactions. We used xylem flow residuals ordinary least square (OLS) regression model filter out elevation diameter breast height (DBH) on field-measured 101 planted with DBH 40 ± 5 cm (≈90–100 years old). The allowed us account most important driver variability: its underlying traits. To minimize confounding temporal spatial variability, twelve consecutive daily measurements (6 a.m. 6 p.m.) taken start growing season. By constructing experimental variogram, quantified variability as function spacing. results showed steady pattern 12, 11, 10 per 314 m2 (equivalent 350 32 hectare), corresponding inter-tree 5.12 m, 5.34 5.60 respectively. These findings suggest when N number (median) unit area (A) equilibrium availability, increasing or decreasing n may not significantly change levels (A; f(A) = n). size deviation depends minimum maximum thresholds tolerance capacity be area. This technique—using variogram determine spacing—can periodically applied, such every 10–15 years, adapted different gradients (e.g., 100 intervals). It offers practical tool managers policymakers, guiding thinning planting strategies enhance resilience face water-stress conditions.

Language: Английский

---

Forest Tree Breeding Under the Global Environmental Change: Challenges and Opportunities

Trees Forests and People, Journal Year: 2025, Volume and Issue: 20, P. 100867 - 100867

Published: April 23, 2025

Language: Английский

---

Comparative metagenomic study unveils new insights on bacterial communities in two pine-feeding Ips beetles (Coleoptera: Curculionidae: Scolytinae)

Frontiers in Microbiology, Journal Year: 2024, Volume and Issue: 15

Published: Oct. 9, 2024

Background Climate change has recently boosted the severity and frequency of pine bark beetle attacks. The bacterial community associated with these beetles acts as “hidden players,” enhancing their ability to infest thrive on defense-rich trees. There is limited understanding environmental acquisition hidden players life stage-specific association different pine-feeding beetles. inadequate knowledge novel introduction trees after infestation. Hence, we conducted first comparative metabarcoding study revealing communities in before feeding stages two dominant beetles, namely Ips sexdentatus acuminatus . We also evaluated between wild lab-bred measure deviation due inhabiting a controlled environment. Results Significant differences amplicon sequence variance (ASVs) abundance existed among within However, Pseudomonas, Serratia, Pseudoxanthomonas, Taibaiella, Acinetobacter served core bacteria. Interestingly, I. larvae correspond significantly higher diversity richness evenness compared other developmental stages, while adults displayed no significant variation stages. Both showed prevalence family Pseudomonadaceae. In addition, dominance Yersiniaceae, whereas Erwiniaceae was abundant Alternatively, Acidobacteriaceae , Corynebacteriaceae Microbacteriaceae were highly families lab-bred, Chitinophagaceae accuminatus. validated relative abundances selected taxa estimated by metagenomic sequencing quantitative PCR. Conclusion Our sheds new insights into associations under influence various drivers such environment, host, documented that lab-breeding considerably influences assembly. Furthermore, alters bacteriome at microhabitat level. Nevertheless, our revisited symbiosis revealed intriguing insight assembly, facilitating future functional studies.

Language: Английский

---

Chemical interactions under the bark: bark-, ambrosia-, and wood-boring beetles and their microbial associates

Reviews in Environmental Science and Bio/Technology, Journal Year: 2024, Volume and Issue: 23(4), P. 923 - 948

Published: Nov. 8, 2024

Language: Английский

---