Black Knot vs Eurasian beaver

Apiosporina morbosa compared with Castor fiber

Key Differences

• Black Knot is Not Evaluated while Eurasian beaver is Vulnerable.

Taxonomic Classification

Rank	Black Knot	Eurasian beaver
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Ascomycota (Sac Fungi)	Chordata (Chordates)
Class	Dothideomycetes (Dothideomycetes)	Mammalia (Mammals)
Order	Venturiales (Venturiales)	Rodentia (Rodents)
Family	Venturiaceae	Castoridae (Beavers)
Genus	Apiosporina	Castor (Beavers)
Species	Apiosporina morbosa	Castor fiber

Conservation Status

Black Knot

NE — Not Evaluated

Eurasian beaver

VU — Vulnerable

Physical Characteristics

Attribute	Black Knot	Eurasian beaver
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black Knot

Habitat

Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, and United States.

Eurasian beaver

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found across Europe (6 countries). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Black Knot

The Black Knot (Apiosporina morbosa) is a species in the genus Apiosporina. Native to Europe and North America, inhabiting ecosystems characteristic of the region. Its geographic range spans Distributed across Denmark, Norway, and United States.

Eurasian beaver

Eurasian beaver (Castor fiber) is classified as Vulnerable (VU) on the IUCN Red List. Facing a high risk of endangerment in the wild, with declining populations and increasing habitat pressure.

Shared Countries

Both species can be found in 2 countries:

🇩🇰 Denmark 🇳🇴 Norway