Concentric Pelt Lichen vs Polar bear

Peltigera elisabethae compared with Ursus maritimus

Key Differences

Concentric Pelt Lichen is Not Evaluated while Polar bear is Vulnerable.

Taxonomic Classification

Rank	Concentric Pelt Lichen	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	Peltigerales (Peltigerales)	Carnivora (ネコ目)
Family	Peltigeraceae	Ursidae (Bears)
Genus	Peltigera	Ursus (Bears)
Species	Peltigera elisabethae	Ursus maritimus

Conservation Status

Concentric Pelt Lichen

NE — Not Evaluated

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Concentric Pelt Lichen	Polar bear
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Concentric Pelt Lichen

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.

Concentric Pelt Lichen

<em>Peltigera elisabethae</em>, commonly known as the Concentric Pelt Lichen, is a foliose lichen in the family Peltigeraceae, characterised by large, lobed thalli with a distinctive patterned upper surface and pale, veined undersides. Members of the genus Peltigera typically form symbiotic associations with either green algae or cyanobacteria (primarily Nostoc), the latter of which contributes nitrogen fixation capacity, making these lichens important contributors to nutrient cycling in boreal and tundra ecosystems. <em>Peltigera elisabethae</em> typically grows on soil, mossy rocks, tree bases, and forest floor litter in humid, cool-temperate to boreal habitats, and has been recorded in Norway, Sweden, and the United States, suggesting a circumpolar or widespread Northern Hemisphere distribution. The species has not been evaluated by the IUCN, so its formal conservation status remains unknown. Foliose Peltigera lichens generally thrive in habitats with clean air, as they are sensitive to atmospheric nitrogen deposition and sulfur dioxide pollution, making them useful bioindicators of air quality. Biological traits including thallus growth rates, individual longevity, and reproductive biology remain poorly documented for this particular species, though members of the genus are typically slow-growing, perennial organisms capable of persisting for decades on stable substrates.

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。