Polar bear vs

Ursus maritimus compared with Pseudostaurosira parasitica

Key Differences

• Polar bear is Vulnerable while is Not Evaluated.

Taxonomic Classification

Rank	Polar bear
Kingdom	Animalia (动物界)	Chromista (色藻界)
Phylum	Chordata (脊索动物门)	Ochrophyta (淡色藻门)
Class	Mammalia (哺乳動物)	Bacillariophyceae (硅藻纲)
Order	Carnivora (食肉目)	Fragilariales (脆杆藻目)
Family	Ursidae (Bears)	Fragilariaceae
Genus	Ursus (Bears)	Pseudostaurosira
Species	Ursus maritimus	Pseudostaurosira parasitica

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 Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway, Portugal, and Sweden.

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。

Pseudostaurosira parasitica是常附生于其他水生生物上的小型线形至披针形淡水硅藻。栖息于全球温带和亚寒带地区河流、湖泊和池塘的底栖和附生生境。这种光合硅藻对淡水系统中附着藻类生物膜群落有所贡献。

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway