American marten vs

Martes americana compared with Usnea cornuta

Key Differences

• American marten is Least Concern while is Near Threatened.

Taxonomic Classification

Rank	American marten
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Chordata (Chordates)	Ascomycota (Sac Fungi)
Class	Mammalia (Mammals)	Lecanoromycetes (Lecanoromycetes)
Order	Carnivora (Carnivorans)	Lecanorales (Lecanorales)
Family	Mustelidae (Weasels & Otters)	Parmeliaceae
Genus	Martes	Usnea
Species	Martes americana	Usnea cornuta

Conservation Status

American marten

LC — Least Concern

NT — Near Threatened

Physical Characteristics

Attribute	American marten
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

American marten

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in United States.

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway, Portugal, and Sweden. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

American marten

The American marten (Martes americana) is a species in the genus Martes. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

Usnea cornuta is a fruticose lichen in the family Parmeliaceae, assessed as Near Threatened (NT). It forms shrubby, branching thalli that hang from tree branches and twigs, typically in humid forest environments. Like all Usnea species, it is highly sensitive to air pollution, particularly sulfur dioxide, making it a useful bioindicator of air quality.