Brook Alder vs Dusky arion

Alnus maritima compared with Arion subfuscus

Key Differences

• Brook Alder is Endangered while Dusky arion is Data Deficient.

Taxonomic Classification

Rank	Brook Alder	Dusky arion
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Magnoliophyta (Flowering Plants)	Mollusca (Mollusks)
Class	Magnoliopsida (Dicots)	Gastropoda (Gastropoda)
Order	Fagales (Beeches & Oaks)	Stylommatophora (Stylommatophora)
Family	Betulaceae	Arionidae
Genus	Alnus	Arion
Species	Alnus maritima	Arion subfuscus

Conservation Status

Brook Alder

EN — Endangered

Dusky arion

DD — Data Deficient

Physical Characteristics

Attribute	Brook Alder	Dusky arion
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brook Alder

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Distributed across Belgium, France, Netherlands, and United Kingdom. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Dusky arion

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Range

Found across Europe (5 countries) and North America (United States).

Brook Alder

The Brook Alder (Alnus maritima) is a species in the genus Alnus. It is currently classified as Endangered on the IUCN Red List. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Shared Countries

Both species can be found in 2 countries:

🇧🇪 Belgium 🇫🇷 France