Ash Dieback vs Brown Rat

Hymenoscyphus fraxineus compared with Rattus norvegicus

Key Differences

• Ash Dieback is Not Evaluated while Brown Rat is Least Concern.

Taxonomic Classification

Rank	Ash Dieback	Brown Rat
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Ascomycota (Sac Fungi)	Chordata (Chordates)
Class	Leotiomycetes (Leotiomycetes)	Mammalia (Mammals)
Order	Helotiales (Helotiales)	Rodentia (Rodents)
Family	Helotiaceae	Muridae (Mice & Rats)
Genus	Hymenoscyphus	Rattus
Species	Hymenoscyphus fraxineus	Rattus norvegicus

Conservation Status

Ash Dieback

NE — Not Evaluated

Brown Rat

LC — Least Concern

Physical Characteristics

Attribute	Ash Dieback	Brown Rat
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Ash Dieback

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Found across Europe (8 countries).

Brown Rat

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 10 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (11 countries), Asia (15 countries), Europe (41 countries), North America (16 countries), Oceania and the Pacific (10 countries), and South America (10 countries).

Ash Dieback

Ash dieback (Hymenoscyphus fraxineus) is a species in the genus Hymenoscyphus. Native to Europe, inhabiting ecosystems characteristic of the region.

Brown Rat

Brown Rat (Rattus norvegicus) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.

Shared Countries

Both species can be found in 8 countries:

🇩🇰 Denmark 🇫🇷 France 🇩🇪 Germany 🇱🇮 Liechtenstein 🇱🇺 Luxembourg 🇳🇴 Norway 🇸🇮 Slovenia 🇸🇪 Sweden