Chocolate Rim Lichen vs Polar bear

Protoparmelia badia compared with Ursus maritimus

Key Differences

Chocolate Rim Lichen is Near Threatened while Polar bear is Vulnerable.

Taxonomic Classification

Rank	Chocolate Rim Lichen	Polar bear
Kingdom	Fungi (균계)	Animalia (동물)
Phylum	Ascomycota (자낭균류)	Chordata (척삭동물)
Class	Lecanoromycetes (요강버섯강)	Mammalia (포유류)
Order	Lecanorales (레카노라목)	Carnivora (식육목)
Family	Parmeliaceae	Ursidae (Bears)
Genus	Protoparmelia	Ursus (Bears)
Species	Protoparmelia badia	Ursus maritimus

Conservation Status

Chocolate Rim Lichen

NT — Near Threatened

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

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

Habitat & Geographic Range

Chocolate Rim Lichen

Habitat

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

Range

Distributed across Denmark, Norway, Portugal, Sweden, and United States. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.

Chocolate Rim Lichen

The Chocolate Rim Lichen (Protoparmelia badia) is a crustose lichen in the family Parmeliaceae, found on exposed siliceous and acid rocks in montane and subalpine environments across Europe, North America, and other temperate and boreal regions. Crustose lichens form a tightly adhering crust directly on rock surfaces and lack the lobed margins of foliose lichens, making them impossible to remove from substrate without destroying the thallus. Protoparmelia badia forms a thin, pale grey to brownish-grey thallus with conspicuous reddish-brown to dark chocolate-brown apothecia (disc-shaped reproductive structures), from which the common name derives. The species is typical of well-lit, clean-air rocky habitats such as mountain summits, upland heathland, and acidic outcrops. Like many lichens, it is a pioneer coloniser of bare rock surfaces and contributes to the initial stages of soil formation. The IUCN classifies P. badia as Near Threatened, reflecting concerns about declining populations linked to air pollution — lichens are renowned biological indicators of air quality, being highly sensitive to sulphur dioxide, nitrogen oxides, and ammonia — as well as climate change effects on montane habitats and disturbance from rock climbing and other outdoor recreation.

Polar bear

지구상에서 가장 큰 육상 육식동물인 북극곰은 700kg을 넘을 수 있으며 캐나다에서 러시아까지 북극 해빙 전역에 분포한다. 고리 물범과 수염 물범을 사냥하기 위해 해빙에 의존하는 고도로 특수화된 해양 포유류이다. 광활한 거리를 헤엄쳐 다닐 수 있는 뛰어난 수영 실력을 가지고 있다. 취약종으로 등재되어 있으며, 기후 변화로 인한 급격한 북극 해빙 감소로 심각한 압력을 받고 있다.