vs Polar bear

Clitocybe subalutacea compared with Ursus maritimus

Key Differences

is Data Deficient while Polar bear is Vulnerable.

Taxonomic Classification

Rank		Polar bear
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Basidiomycota (Club Fungi)	Chordata (Chordates)
Class	Agaricomycetes (Mushrooms)	Mammalia (Mammals)
Order	Agaricales (Gilled Mushrooms)	Carnivora (Carnivorans)
Family	Tricholomataceae	Ursidae (Bears)
Genus	Clitocybe	Ursus (Bears)
Species	Clitocybe subalutacea	Ursus maritimus

Conservation Status

DD — Data Deficient

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

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

Distributed across Denmark, Norway, and Sweden.

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.

Clitocybe subalutacea is a pale, leather-colored agaric fungus in the family Tricholomataceae found across temperate European woodlands and semi-open habitats. The species epithet subalutacea derives from Latin for 'somewhat leather-colored,' referencing the cap's pale tan to buff coloration distinguishing it from more purely white or grey species in the genus. It fruits in autumn among leaf litter in deciduous and mixed forests, occasionally in grassy woodland clearings, acting as a saprotrophic decomposer of accumulated organic matter. The fruiting body structure is characteristic of Clitocybe: a shallowly depressed to funnel-shaped cap, crowded decurrent gills, and a slender cylindrical stipe. Microscopic spore morphology and chemical reactions assist in confirming identity in this taxonomically complex genus. Like most Clitocybe species, C. subalutacea contributes to decomposer communities in temperate forests, where the collective activity of many fungal species drives litter breakdown and nutrient release, underpinning forest productivity and soil health across European woodland ecosystems.

Polar bear

The largest land carnivore on Earth, polar bears can exceed 700 kg and are found across Arctic sea ice from Canada to Russia. Highly specialized marine mammals that rely on sea ice to hunt ringed and bearded seals. Excellent swimmers capable of covering vast distances in open water. Listed as Vulnerable, with populations under severe pressure from rapid Arctic sea ice loss due to climate change.