vs Polar bear

Nitrosotalea devanaterra 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	Nitrosotalea	Ursus (Bears)
Species	Nitrosotalea devanaterra	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.

Nitrosotalea devanaterra是泉古菌门的一种化学无机自养古菌，以成为第一个被证实在酸性条件下繁盛的氨氧化古菌而著称。从酸性农业土壤中分离，在其他硝化生物无法发挥作用的低pH环境的氮循环中发挥重要作用。这一发现拓展了对全球氮循环在酸性生态系统中如何运作的理解。

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。