vs Polar bear

Nitrosotenuis compared with Ursus maritimus

Key Differences

• is Not Evaluated while Polar bear is Vulnerable.

Taxonomic Classification

Rank		Polar bear
Kingdom	Archaea (Archaea)	Animalia (动物界)
Phylum	Thermoproteota (热变形菌门)	Chordata (脊索动物门)
Class	Nitrososphaeria (Nitrososphaeria)	Mammalia (哺乳動物)
Order	Nitrososphaerales (Nitrososphaerales)	Carnivora (食肉目)
Family	Nitrosopumilaceae	Ursidae (Bears)
Genus	Nitrosotenuis	Ursus (Bears)
Species	Nitrosotenuis	Ursus maritimus

Conservation Status

NE — Not Evaluated

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

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.

Nitrosotenuis是泉古菌门的一个氨氧化古菌属，包含在多种环境中进行硝化作用的物种。成员已从温暖地下水和其他生境中分离，拓展了我们对海洋和土壤环境之外古菌氨氧化体的认识。其化学无机自养代谢对全球氮循环有重大贡献。

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。