vs Oso Polar

Clitocybe marginella compared with Ursus maritimus

Key Differences

is Data Deficient while Oso Polar is Vulnerable.

Taxonomic Classification

Rank		Oso Polar
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Basidiomycota (Club Fungi)	Chordata (cordados)
Class	Agaricomycetes (Mushrooms)	Mammalia (mamíferos)
Order	Agaricales (Gilled Mushrooms)	Carnivora (carnívoros)
Family	Tricholomataceae	Ursidae (Bears)
Genus	Clitocybe	Ursus (Bears)
Species	Clitocybe marginella	Ursus maritimus

Conservation Status

DD — Data Deficient

Oso Polar

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute		Oso Polar
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 Belgium, Denmark, Norway, and Sweden.

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.

Clitocybe marginella is a small agaric fungus in the family Tricholomataceae found in temperate European woodland and semi-open habitats. Like many members of the diverse Clitocybe genus, it produces modest fruiting bodies with a depressed to funnel-shaped cap and decurrent gills running down the stipe, typically whitish to pale buff in coloration. The species fruits in autumn, colonizing leaf litter, humus-rich soils, and woodland margins where it functions as a saprotrophic decomposer. The epithet marginella may reference subtle marginal features of the cap or gills that help distinguish it from closely related species. Identification within this genus typically requires microscopic examination of spore size and shape, along with assessment of odor, taste, and substrate preferences. European Clitocybe diversity is significant, with dozens of species recorded across forest, grassland, and heathland habitats. C. marginella contributes to the intricate web of decomposer fungi that recycle nutrients in temperate forest ecosystems throughout Northwestern and Central Europe.

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.