vs Polar bear

Clitocybe diatreta compared with Ursus maritimus

Key Differences

is Least Concern while Polar bear is Vulnerable.

Taxonomic Classification

Rank		Polar bear
Kingdom	Fungi (균계)	Animalia (동물)
Phylum	Basidiomycota (담자균류)	Chordata (척삭동물)
Class	Agaricomycetes (주름버섯강)	Mammalia (포유류)
Order	Agaricales (주름버섯목)	Carnivora (식육목)
Family	Tricholomataceae	Ursidae (Bears)
Genus	Clitocybe	Ursus (Bears)
Species	Clitocybe diatreta	Ursus maritimus

Conservation Status

LC — Least Concern

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 Belgium, Denmark, 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.

Clitocybe diatreta is a saprotrophic agaric fungus belonging to the family Tricholomataceae, found across temperate European forests and woodland habitats from Scandinavia southward through Central Europe. It typically fruits in autumn among leaf litter of deciduous and mixed forests, favoring moist, humus-rich soils beneath beech, oak, and conifer stands. The cap is convex to depressed, pale greyish-buff or whitish, with the decurrent gills and funnel-shaped profile characteristic of the genus Clitocybe. Microscopic examination reveals ellipsoid spores with smooth walls, confirming identity in this difficult taxonomic group. The diatreta species complex has been subject to taxonomic revision as molecular techniques clarify boundaries between morphologically similar taxa. As a decomposer of forest litter, C. diatreta contributes to the breakdown of cellulose and lignin in temperate forest floors, releasing nutrients back into the soil ecosystem. Its presence indicates structurally diverse, undisturbed forest conditions preferred by many specialist saprotrophic fungi in European woodland communities.

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.