Cinder Lichen vs Oso Polar

Aspicilia cinerea compared with Ursus maritimus

Key Differences

Cinder Lichen is Least Concern while Oso Polar is Vulnerable.

Taxonomic Classification

Rank	Cinder Lichen	Oso Polar
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Ascomycota (Sac Fungi)	Chordata (cordados)
Class	Lecanoromycetes (Lecanoromycetes)	Mammalia (mamíferos)
Order	Pertusariales (Pertusariales)	Carnivora (carnívoros)
Family	Megasporaceae	Ursidae (Bears)
Genus	Aspicilia	Ursus (Bears)
Species	Aspicilia cinerea	Ursus maritimus

Conservation Status

Cinder Lichen

LC — Least Concern

Oso Polar

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Cinder Lichen	Oso Polar
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Cinder Lichen

Habitat

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

Range

Distributed across Denmark, Norway, Portugal, Sweden, and United States.

Oso Polar

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.

Cinder Lichen

Cinder lichen (Aspicilia cinerea) is a crustose lichen in the family Megasporaceae, found widely across the Northern Hemisphere in boreal, montane, and arctic regions of Europe, Asia, and North America. It grows as a flat, gray to ash-gray crust on exposed siliceous rock surfaces—particularly granite, gneiss, and other hard acidic rocks—in open, high-light environments such as moorland boulders, mountain crags, stream-side rocks, and coastal outcrops. The cinder lichen's granular to warty thallus and its pale gray color, reminiscent of volcanic ash or cinder, give the species its common name. Aspicilia cinerea is classified as Least Concern, with widespread and abundant populations in suitable rocky habitats. Like many saxicolous lichens, it is extremely slow-growing and may live for centuries on stable rock surfaces. The species forms part of diverse epilithic lichen communities that colonize bare rock and contribute to biological weathering and soil formation. It is resistant to desiccation and temperature extremes, making it well adapted to exposed subalpine and arctic environments. Cinder lichen has been used as a model organism in studies of lichen growth rates and rock weathering. The genus Aspicilia is one of the largest in lichenized fungi, and molecular work has substantially revised its circumscription.

Oso Polar

El mayor carnivoro terrestre de la Tierra, el oso polar puede superar los 700 kg y se encuentra en el hielo marino del Artico, desde Canada hasta Rusia. Es un mamifero marino altamente especializado que depende del hielo marino para cazar focas anilladas y barbadas. Excelente nadador capaz de cubrir grandes distancias en agua abierta. Clasificado como Vulnerable, sus poblaciones soportan una presion severa por la rapida perdida de hielo marino artico debida al cambio climatico.