Polar bear vs

Ursus maritimus compared with Sistotrema diademiferum

Key Differences

• Polar bear is Vulnerable while is Least Concern.

Taxonomic Classification

Rank	Polar bear
Kingdom	Animalia (动物界)	Fungi (真菌界)
Phylum	Chordata (脊索动物门)	Basidiomycota (担子菌门)
Class	Mammalia (哺乳動物)	Agaricomycetes (傘菌綱)
Order	Carnivora (食肉目)	Cantharellales (雞油菌目)
Family	Ursidae (Bears)	Hydnaceae
Genus	Ursus (Bears)	Sistotrema
Species	Ursus maritimus	Sistotrema diademiferum

Conservation Status

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

LC — Least Concern

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

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

Distributed across Belgium, Denmark, Norway, 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。

Sistotrema diademiferum是一种伏贴担子菌，在温带森林中阔叶树和针叶树的枯死木材和树皮上形成白色至奶油色斑块。通过对倒木和树干的腐生活动参与养分循环，是木材分解者。本种分布于欧洲和北美的林地生境中。

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway