Boreal Tree Firedot vs Polar bear

Caloplaca ahtii compared with Ursus maritimus

Key Differences

Boreal Tree Firedot is Not Evaluated while Polar bear is Vulnerable.

Taxonomic Classification

Rank	Boreal Tree Firedot	Polar bear
Kingdom	Fungi (菌界)	Animalia (動物)
Phylum	Ascomycota (子嚢菌門)	Chordata (脊索動物)
Class	Lecanoromycetes (チャシブゴケ菌綱)	Mammalia (哺乳類)
Order	Teloschistales (Teloschistales)	Carnivora (ネコ目)
Family	Teloschistaceae	Ursidae (Bears)
Genus	Caloplaca	Ursus (Bears)
Species	Caloplaca ahtii	Ursus maritimus

Conservation Status

Boreal Tree Firedot

NE — Not Evaluated

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Boreal Tree Firedot	Polar bear
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Boreal Tree Firedot

Habitat

Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway, Sweden, and United States.

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.

Boreal Tree Firedot

The Boreal Tree Firedot (Caloplaca ahtii) is a species in the genus Caloplaca. Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Polar bear

地球上で最大の陸上肉食動物であるホッキョクグマは700kgを超えることがあり、カナダからロシアまでの北極海氷域全体に分布する。ワモンアザラシとヒゲアザラシを狩るために海氷に依存する高度に特化した海洋哺乳類である。広大な距離を泳ぐことができる優れた泳者でもある。脆弱種に指定されており、気候変動による急激な北極海氷の消失で個体群が深刻な圧力を受けている。