Polar bear vs

Ursus maritimus compared with Pyrenula nitida

Key Differences

• Polar bear is Vulnerable while is Endangered.

Taxonomic Classification

Rank	Polar bear
Kingdom	Animalia (动物界)	Fungi (真菌界)
Phylum	Chordata (脊索动物门)	Ascomycota (子囊菌门)
Class	Mammalia (哺乳動物)	Eurotiomycetes (散囊菌綱)
Order	Carnivora (食肉目)	Pyrenulales (小核衣菌目)
Family	Ursidae (Bears)	Pyrenulaceae
Genus	Ursus (Bears)	Pyrenula
Species	Ursus maritimus	Pyrenula nitida

Conservation Status

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

EN — Endangered

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 and North America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, Portugal, Sweden, and United States. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Polar bear

北极熊是地球上最大的陆地食肉动物，体重可超过700千克，分布于从加拿大到俄罗斯的北极海冰区。是高度特化的海洋哺乳动物，依赖海冰捕猎环斑海豹和髯海豹。是优秀的游泳者，能够横渡广阔的开阔水域。被列为易危种，因气候变化导致北极海冰迅速减少，种群正受到严重威胁。

光亮座囊衣（Pyrenula nitida）是生长于西欧湿润大西洋林古老阔叶树光滑树皮上的树皮生壳状地衣，具光滑光泽的橄榄绿至褐色叶状体和嵌入的烧瓶形子囊壳。被视为西欧古老持续性森林的旗舰指示种。因古树和古老森林生境的丧失而受到严重威胁，属濒危地衣。

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway