Polar bear vs

Ursus maritimus compared with Usnea cornuta

Key Differences

Polar bear is Vulnerable while is Near Threatened.

Taxonomic Classification

Rank	Polar bear
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Chordata (cordados)	Ascomycota (Sac Fungi)
Class	Mammalia (mamíferos)	Lecanoromycetes (Lecanoromycetes)
Order	Carnivora (carnívoros)	Lecanorales (Lecanorales)
Family	Ursidae (Bears)	Parmeliaceae
Genus	Ursus (Bears)	Usnea
Species	Ursus maritimus	Usnea cornuta

Conservation Status

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

NT — Near Threatened

Physical Characteristics

Attribute	Polar bear
Diet	Carnivore	—
Average Lifespan	25 years	—
Average Length	2.4 m	—
Average Weight	450.0 kg	—

Habitat & Geographic Range

Polar bear

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and boreal forests and taiga, among 4 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Norway. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

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.

Polar bear

O maior carnivoro terrestre da Terra, o urso-polar pode ultrapassar 700 kg e e encontrado pelo gelo marinho artico, do Canada ate a Russia. Mamiferos marinhos altamente especializados que dependem do gelo marinho para cacas de focas e focas-barbadas. Excelentes nadadores capazes de percorrer grandes distancias em aguas abertas. Classificado como Vulneravel, com populacoes sob severa pressao devido a rapida perda de gelo marinho artico causada pelas mudancas climaticas.

Usnea cornuta e um liquen fruticoso da familia Parmeliaceae, avaliado como Quase Ameacado (NT). Forma talos arbustivos e ramificados que pendem de galhos e ramulos de arvores, tipicamente em ambientes florestais umidos. Como todas as especies de Usnea, e altamente sensivel a poluicao do ar, especialmente ao dioxido de enxofre, tornando-a um bioindicador util da qualidade do ar.