Polar bear vs

Ursus maritimus compared with Sphingobacterium composti

Key Differences

• Polar bear is Vulnerable while is Not Evaluated.

Taxonomic Classification

Rank	Polar bear
Kingdom	Animalia (动物界)	Bacteria (Bacteria)
Phylum	Chordata (脊索动物门)	Bacteroidota (拟杆菌门)
Class	Mammalia (哺乳動物)	Bacteroidia (擬桿菌綱)
Order	Carnivora (食肉目)	Sphingobacteriales (鞘氨醇杆菌目)
Family	Ursidae (Bears)	Sphingobacteriaceae
Genus	Ursus (Bears)	Sphingobacterium
Species	Ursus maritimus	Sphingobacterium composti

Conservation Status

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

NE — Not Evaluated

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 Asia, inhabiting ecosystems characteristic of the region.

Range

Found in Taiwan.

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。

Sphingobacterium composti 是一种革兰氏阴性细菌，正如其种名所示，最初从堆肥材料中分离得到。该菌栖息于堆肥堆和富含有机质的土壤中的分解有机物里。这种好氧化能有机营养细菌能分解包括纤维素和蛋白质在内的复杂有机化合物，积极参与堆肥化过程。