Polar bear vs

Ursus maritimus compared with Tuber maculatum

Key Differences

• Polar bear is Vulnerable while is Data Deficient.

Taxonomic Classification

Rank	Polar bear
Kingdom	Animalia (动物界)	Fungi (真菌界)
Phylum	Chordata (脊索动物门)	Ascomycota (子囊菌门)
Class	Mammalia (哺乳動物)	Pezizomycetes (盘菌纲)
Order	Carnivora (食肉目)	Pezizales (盤菌目)
Family	Ursidae (Bears)	Tuberaceae
Genus	Ursus (Bears)	Tuber
Species	Ursus maritimus	Tuber maculatum

Conservation Status

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

DD — Data Deficient

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 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。

Tuber maculatum俗称「白松露」或「斑点松露」，是一种地下生子囊菌，外皮白色至奶油色，带有深色斑点，外观呈斑驳状。生长于欧洲温带森林的石灰质土壤中，与栎树、榛树等阔叶树形成外生菌根共生关系。这种地下真菌与树根建立营养交换关系，依靠其浓烈气味吸引穴居动物来传播孢子。

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway