vs Polar bear

Lecanographa lyncea compared with Ursus maritimus

Key Differences

is Critically Endangered while Polar bear is Vulnerable.

Taxonomic Classification

Rank		Polar bear
Kingdom	Fungi (菌界)	Animalia (動物)
Phylum	Ascomycota (子嚢菌門)	Chordata (脊索動物)
Class	Arthoniomycetes (ホシゴケ菌綱)	Mammalia (哺乳類)
Order	Arthoniales (Arthoniales)	Carnivora (ネコ目)
Family	Lecanographaceae	Ursidae (Bears)
Genus	Lecanographa	Ursus (Bears)
Species	Lecanographa lyncea	Ursus maritimus

Conservation Status

CR — Critically Endangered

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

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 9 distinct biome types spanning the Neotropic and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Brazil, Denmark, Norway, and Sweden. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its 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.

Lecanographa lynceaは、原生林の古い老齢木の樹皮上に生育する希少な固着地衣類です。細長い線形子嚢盤を形成し、ヨーロッパにおいて未撹乱の長期継続性森林生態系を示す最も敏感な指標種の一つとされています。絶滅寸前（CR）に分類され、生息地の喪失、老齢木の衰退、大気汚染により深刻な脅威にさらされています。

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。