Site-specific factors influencing Hymenoscyphus fraxineus spore dispersal: the role of understorey vegetation and slope steepness in ash dieback spread

Ash dieback (ADB), caused by Hymenoscyphus fraxineus, is a severe threat to Fraxinus excelsior populations across Europe, with spore dispersal playing a critical role in disease progression. While broad-scale environmental drivers of spore dispersal are well studied, site-specific factors remain un...

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Main Author: Aneliya RAYKOVA
Format: Article
Language:English
Published: AcademicPres 2025-06-01
Series:Notulae Botanicae Horti Agrobotanici Cluj-Napoca
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Online Access:https://www.notulaebotanicae.ro/index.php/nbha/article/view/14531
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author Aneliya RAYKOVA
author_facet Aneliya RAYKOVA
author_sort Aneliya RAYKOVA
collection DOAJ
description Ash dieback (ADB), caused by Hymenoscyphus fraxineus, is a severe threat to Fraxinus excelsior populations across Europe, with spore dispersal playing a critical role in disease progression. While broad-scale environmental drivers of spore dispersal are well studied, site-specific factors remain underexplored. This review uniquely explores how understorey and slope steepness influence the dispersal, deposition, and development of H. fraxineus spores, along with stand management strategies reported to impact ADB disease progression. The dense understorey vegetation creates microclimatic conditions favouring spore development and retention through increased humidity, reduced airflow, and light accessibility, while also potentially modifying transmission dynamics. Slope steepness may affect spore dynamics through gravity-driven movements of infected ash rachises, and microclimatic variation associated with slope aspect. Understanding these site-specific effects can enhance disease management strategies aimed at conserving tolerant individuals and preserving the genetic basis of tolerance for future Fraxineus excelsior generations. The review also identifies knowledge gaps and highlights the need for empirical research on context-specific management strategies across diverse forest landscapes.
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series Notulae Botanicae Horti Agrobotanici Cluj-Napoca
spelling doaj-art-b20f78bfddf94b4ba4103a9fd7abd3e92025-08-20T02:43:50ZengAcademicPresNotulae Botanicae Horti Agrobotanici Cluj-Napoca0255-965X1842-43092025-06-0153210.15835/nbha53214531Site-specific factors influencing Hymenoscyphus fraxineus spore dispersal: the role of understorey vegetation and slope steepness in ash dieback spreadAneliya RAYKOVA0University of Salford, School of Science, Engineering & Environment, Manchester Ash dieback (ADB), caused by Hymenoscyphus fraxineus, is a severe threat to Fraxinus excelsior populations across Europe, with spore dispersal playing a critical role in disease progression. While broad-scale environmental drivers of spore dispersal are well studied, site-specific factors remain underexplored. This review uniquely explores how understorey and slope steepness influence the dispersal, deposition, and development of H. fraxineus spores, along with stand management strategies reported to impact ADB disease progression. The dense understorey vegetation creates microclimatic conditions favouring spore development and retention through increased humidity, reduced airflow, and light accessibility, while also potentially modifying transmission dynamics. Slope steepness may affect spore dynamics through gravity-driven movements of infected ash rachises, and microclimatic variation associated with slope aspect. Understanding these site-specific effects can enhance disease management strategies aimed at conserving tolerant individuals and preserving the genetic basis of tolerance for future Fraxineus excelsior generations. The review also identifies knowledge gaps and highlights the need for empirical research on context-specific management strategies across diverse forest landscapes. https://www.notulaebotanicae.ro/index.php/nbha/article/view/14531ash diebackHymenoscyphus fraxineuslife cyclesite-specific characteristicslope aspectsspore
spellingShingle Aneliya RAYKOVA
Site-specific factors influencing Hymenoscyphus fraxineus spore dispersal: the role of understorey vegetation and slope steepness in ash dieback spread
Notulae Botanicae Horti Agrobotanici Cluj-Napoca
ash dieback
Hymenoscyphus fraxineus
life cycle
site-specific characteristic
slope aspects
spore
title Site-specific factors influencing Hymenoscyphus fraxineus spore dispersal: the role of understorey vegetation and slope steepness in ash dieback spread
title_full Site-specific factors influencing Hymenoscyphus fraxineus spore dispersal: the role of understorey vegetation and slope steepness in ash dieback spread
title_fullStr Site-specific factors influencing Hymenoscyphus fraxineus spore dispersal: the role of understorey vegetation and slope steepness in ash dieback spread
title_full_unstemmed Site-specific factors influencing Hymenoscyphus fraxineus spore dispersal: the role of understorey vegetation and slope steepness in ash dieback spread
title_short Site-specific factors influencing Hymenoscyphus fraxineus spore dispersal: the role of understorey vegetation and slope steepness in ash dieback spread
title_sort site specific factors influencing hymenoscyphus fraxineus spore dispersal the role of understorey vegetation and slope steepness in ash dieback spread
topic ash dieback
Hymenoscyphus fraxineus
life cycle
site-specific characteristic
slope aspects
spore
url https://www.notulaebotanicae.ro/index.php/nbha/article/view/14531
work_keys_str_mv AT aneliyaraykova sitespecificfactorsinfluencinghymenoscyphusfraxineussporedispersaltheroleofunderstoreyvegetationandslopesteepnessinashdiebackspread