Predisposition of forests to biotic disturbance: Predicting the distribution of Acute Oak Decline using environmental factors

Forest Ecology and Management, Journal Year: 2017, Volume and Issue: 407, P. 145 - 154

Published: Nov. 5, 2017

Language: Английский

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Flower phenological events and duration pattern is influenced by temperature and elevation in Dhauladhar mountain range of Lesser Himalaya

Ecological Indicators, Journal Year: 2021, Volume and Issue: 129, P. 107902 - 107902

Published: June 28, 2021

Studying phenology is undeniably one of the most effective ways to monitor and perceive how a particular plant species interact respond varying environmental conditions. In this study, shifts in flowering phenological events 24 herbaceous with changing elevation temperature were observed Dhauladhar Mountain range Lesser Himalaya. Five permanent plots (20 × 20 m2) established from 2,000 m 4,000 at each rising 500 distance for documentation flora. Abundance-based (onset duration [OFD] ≥ 10% 30%, peak [PFD] > 30% 80%, end [EFD] 80% total [FD] as difference onset DOY) was done plot. The onset, peak, day year (DOY) recorded 20%, 55%, 90% floral abundance, respectively, 1st January. Upon analyses, Linear-mixed effects model depicted significant differences soil temperature. DOY varied significantly gradient, while showed non-significant interaction. linear ANOVA demonstrated that OFD, PFD, EFD FD p < 0.001. increased species, whereas two Aquilegia pubiflora Primula denticulata, early incidences compared other species. Temperature played an imperative role influencing initiation these events. High plasticity advantageous high regions where pollinators are scarcely present. Therefore, documenting shifting would help researcher effectively predict climate change on alpine communities near future.

Language: Английский

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Three new species of ambrosia beetles established in Great Britain illustrate unresolved risks from imported wood

Journal of Pest Science, Journal Year: 2019, Volume and Issue: 93(1), P. 117 - 126

Published: July 19, 2019

Language: Английский

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Temperate Oak Declines: Biotic and abiotic predisposition drivers

Elsevier eBooks, Journal Year: 2022, Volume and Issue: unknown, P. 239 - 263

Published: Jan. 1, 2022

Language: Английский

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Associations Between Local-Scale Soil and Tree Context Factors and Acute Oak Decline (AOD): Plant-Soil Feedbacks and the Cause-Effect Conundrum

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

Published: April 18, 2025

Background and aims: Acute oak decline (AOD), a syndrome affecting mature oaks, involves bacterial pathogens which likely act as opportunists under host stress. Trees displaying symptoms (bleeding cankers) appear in localized clusters, not whole stands. This study investigates the potential involvement of local-scale factors, interaction with large-scale environmental drivers, influencing onset progression AOD. Methods: AOD-symptomatic (n=30) asymptomatic trees across three UK woodlands were assessed for tree characteristics, their surrounding context, soil properties. Results: Tree health status was linked to significant differences properties sites. Symptomatic exhibited greater loss crown density, lower local stand (0-20 m) basal area shallower depth gleying. Significant included concentrations Olsen P, total N, exchangeable Mg symptomatic trees, alongside higher Fe, especially at 40–50 cm depth. Depth gleying Fe identified most influential predictors Conclusions: AOD may experience seasonal water saturation closer surface compared resulting proportion roots being exposed an anoxic, iron-reducing environment. is first report such association between depth, saturation, symptom It unclear whether balance associated nutrient variations are predisposing factors or consequences declining health, though contribute A feedback loop conceptualised where worsens conditions, creating negative cycle that accelerates decline.

Language: Английский

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Agrilus maliMatsumara (Coleoptera: Buprestidae), a new invasive pest of wild apple in western China: DNA barcoding and life cycle

Ecology and Evolution, Journal Year: 2018, Volume and Issue: 9(3), P. 1160 - 1172

Published: Dec. 27, 2018

Abstract Agrilus mali Matsumara (Coleoptera: Buprestidae) is a wood‐boring beetle distributed to eastern China that occasionally injures apple species. However, this new the wild forests ( Malus sieversii ) of Tianshan Mountains (western China) and has caused extensive tree mortality. The development biological control program for these high priority requires exploration life cycle, DNA barcoding taxonomic status A. . In study, determine diversity invasive beetles, fragment mitochondrial cytochrome oxidase gene was analyzed. Based on results, beetles from Gongliu Xinyuan counties Xinjiang were identical but differed those in nursery by single‐nucleotide substitution. We summarize status, relationships, genetic distances among other species using Tajima‐Nei model maximum likelihood phylogeny. Analysis revealed closely related mendax both belong Sinuatiagrulus subgenus. cycle investigated based monthly regular inspection Tianshan. Similar congeneric species, hosts are injured larvae feeding phloem tissue, resulting serpentine galleries constructed between bark xylem prevent nutrient transport leading Future studies will focus plant physiological responses include surveys natural enemies potential classical program.

Language: Английский

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Low Heat Availability Could Limit the Potential Spread of the Emerald Ash Borer to Northern Europe (Prognosis Based on Growing Degree Days per Year)

Insects, Journal Year: 2022, Volume and Issue: 13(1), P. 52 - 52

Published: Jan. 2, 2022

Emerald ash borer Agrilus planipennis (Coleoptera: Buprestidae) is one of 20 priority quarantine pests the European Union. It native to Asia and established in USA, Canada, Russia, Ukraine. We made first prognosis potential range A. Europe based on heat availability. Mean annual growing degree days base 10 °C (AGDD10) was calculated for each grid square (0.25° × 0.25° latitude x longitude degrees) Earth's surface. Minimal AGDD10 recorded squares currently occupied by 714° Asia, 705° North America, 711° Russia. has never been localities with below 700°. If phenotypic plasticity would not allow this species overcome threshold, cold regions probably be invaded planipennis. Thus, Fraxinus excelsior could potentially escape from some Norway, Sweden, Finland, Ireland, Great Britain.

Language: Английский

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Potential Westward Spread of Emerald Ash Borer, Agrilus planipennis Fairmaire, 1888 (Coleoptera: Buprestidae) from Eastern Ukraine

Forests, Journal Year: 2023, Volume and Issue: 14(4), P. 736 - 736

Published: April 3, 2023

Emerald ash borer (EAB), Agrilus planipennis, is a phloem-boring beetle, native to East Asia that has become serious invasive pest of (Fraxinus spp.) trees in North America and European Russia since the early 2000s. In 2019, EAB was detected Ukraine. It had spread over 300 km from entry point two years killed hundreds Fraxinus excelsior F. pennsylvanica trees. poses threat forests neighboring countries, which have already been damaged by fungus Hymenoscyphus fraxineus. The purpose this research (i) reveal traits climatic variables affect its survival; (ii) predict expansion range Ukraine westward; (iii) compare most significant bioclimatic native, ranges EAB, as well outside these ranges. results demonstrated following: all ranges, adapted seasonal temperature variations; MaxEnt model predicted potential distribution with high accuracy (AUC = 0.988); area invasion covered 87%, 48%, 32% Luhansk, Kharkiv, Donetsk regions, respectively; EAB-inhabited regions ecological plasticity pest. However, predictions could be improved considering forest structure, localization roads.

Language: Английский

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Evidence for the Widespread Occurrence of Bacteria Implicated in Acute Oak Decline from Incidental Genetic Sampling

Forests, Journal Year: 2021, Volume and Issue: 12(12), P. 1683 - 1683

Published: Dec. 1, 2021

Acute Oak Decline (AOD) is complex syndrome affecting Britain’s keystone native oak species, (Quercus robur L. and Q. petraea (Matt.) Liebl.), in some cases causing mortality within five years of symptom development. The most distinguishable weeping stem lesions, from which four species bacteria have been isolated: Brenneria goodwinii, Gibbsiella quercinecans, Lonsdalea britannica Rahnella victoriana. We do not yet know where else these exist, little known about the relationship wider leaf microbiome (phyllosphere) to acute decline. Here we investigate whether incidental evidence a large genome re-sequencing dataset could be used detect foliage, bacterial incidence co-varied with AOD status or location. leaves buds were sampled 421 trees at sites England. Whole genomic DNA samples was shot-gun sequenced short reads. Non-oak reads extracted data queried microbial databases. Reads uniquely matching AOD-associated genomes found present on all included active historic lesions without symptoms. abundance did differ between tree health categories but among sites. conclude that may members normal microbiome, whose presence sufficient cause

Language: Английский

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Enhancing Buprestidae monitoring in Europe: Trap catches increase with a fluorescent yellow colour but not with the presence of decoys

PLoS ONE, Journal Year: 2024, Volume and Issue: 19(7), P. e0307397 - e0307397

Published: July 18, 2024

This study investigated the efficacy of various traps differing in colour (green or yellow), presence absence decoys (dead Agrilus planipennis ) design (commercial MULTz multifunnel traps, and homemade bottle- fan-traps for monitoring European Buprestidae deciduous forests pear orchards. Over two years, we collected 2220 samples on a two-week basis from 382 across 46 sites Belgium France. None proved effective sinuatus infested orchards (17 specimens captured 2021, 0 2022). The did not affect catch rates whatever trap model, colour, buprestid species sex. fluorescent yellow (MULTz tended to be more attractive than green and, lower extent, traps). Most showed similar patterns mean catches, with exception biguttatus , which had largest catches traps. Finally, observed high variation between localities: site explained 64% variance, while tree within type only 6–8.5% each. In many sites, very few specimens, despite abundance dying mature trees favourable development Buprestidae. For early detection non-native Buprestidae, it therefore seems essential maximise number sites. Due their cost-effectiveness, lightweight design, modularity, emerged as promising tools monitoring. study’s findings extend beyond fauna, preliminary trial Canada suggested that could also improve captures non-European interest such bilineatus (a EPPO A2 list pests/pathogens recommended regulation EU).

Language: Английский

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