vs Polar bear

Altererythrobacter troitsensis compared with Ursus maritimus

Key Differences

• is Not Evaluated while Polar bear is Vulnerable.

Taxonomic Classification

Rank		Polar bear
Kingdom	Bacteria (Bacteria)	Animalia (动物界)
Phylum	Proteobacteria (變形菌門)	Chordata (脊索动物门)
Class	Alphaproteobacteria (α-变形菌纲)	Mammalia (哺乳動物)
Order	Sphingomonadales (鞘脂单胞菌目)	Carnivora (食肉目)
Family	Erythrobacteraceae	Ursidae (Bears)
Genus	Altererythrobacter	Ursus (Bears)
Species	Altererythrobacter troitsensis	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

Habitat

Native to Asia, inhabiting ecosystems characteristic of the region.

Range

Found in Taiwan.

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.

特洛伊茨克异赤杆菌（Altererythrobacter troitsensis）是黄单胞菌目异赤杆菌科的一种革兰氏阴性好氧细菌，以其分离地俄罗斯特洛伊茨克命名。该物种含有橙红色类胡萝卜素色素，具有光保护功能，能在多种好氧条件下生长。作为异赤杆菌属的成员，它参与海洋或土壤环境中的有机碳循环。

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。