Ash
VU

Ash

Fraxinus excelsior

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Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Fraxinus_excelsior

Overview

Fraxinus excelsior, known as the ash, or European ash or common ash to distinguish it from other types of ash, is a flowering plant species in the olive family Oleaceae. It is native throughout mainland Europe east to the Caucasus and Alborz mountains, and west to Great Britain and Ireland, the latter determining its western boundary. The northernmost location is in the Trondheimsfjord region of Norway.

The species is widely cultivated and reportedly naturalised in New Zealand and in scattered locales in the United States and Canada. The wood has many uses as it is flexible, workable, strong and lightweight.

European Ash faces severe population decline primarily due to ash dieback disease caused by the invasive fungal pathogen Hymenoscyphus fraxineus, which has devastated ash populations across Europe since the 1990s. Additional pressures from the invasive emerald ash borer beetle, habitat fragmentation, and climate change further threaten the species' long-term survival.

Threat summary

Habitat

European Ash occurs in mixed deciduous and coniferous forests, woodland edges, hedgerows, and riparian areas across Europe, typically preferring moist, fertile soils in lowland and montane regions up to 1,500m elevation. The species is commonly found in association with oak, beech, and other broadleaved trees in temperate forest ecosystems.

TERRESTRIAL· majorTERRESTRIAL· major

Frequently asked questions

Why is Ash classified as Vulnerable?
Ash is classified as Vulnerable because the population is declining and the species faces a high risk of extinction in the medium-term future if current pressures continue. European Ash faces severe population decline primarily due to ash dieback disease caused by the invasive fungal pathogen Hymenoscyphus fraxineus, which has devastated ash populations across Europe since the 1990s. Additional pressures from the invasive emerald ash borer beetle, habitat fragmentation, and climate change further threaten the species' long-term survival.
Where does Ash live?
Ash occurs in across multiple regions. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Ash?
The main threats to Ash are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

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