Cinnabar Powdercap vs Polar bear

Cystodermella cinnabarina compared with Ursus maritimus

Taxonomic Classification

Rank	Cinnabar Powdercap	Polar bear
Kingdom	Fungi (菌界)	Animalia (動物)
Phylum	Basidiomycota (担子菌門)	Chordata (脊索動物)
Class	Agaricomycetes (真正担子菌綱)	Mammalia (哺乳類)
Order	Agaricales (ハラタケ目)	Carnivora (ネコ目)
Family	Agaricaceae (Agarics)	Ursidae (Bears)
Genus	Cystodermella	Ursus (Bears)
Species	Cystodermella cinnabarina	Ursus maritimus

Conservation Status

Cinnabar Powdercap

VU — Vulnerable

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Cinnabar Powdercap	Polar bear
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Cinnabar Powdercap

Habitat

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

Range

Distributed across Denmark, Norway, Sweden, and United States. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

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.

Cinnabar Powdercap

Cinnabar powdercap (Cystodermella cinnabarina) is a small agaric fungus in the family Agaricaceae, distributed across the Northern Hemisphere in Europe, North America, and parts of Asia. It grows in woodland and forest floor habitats, particularly in needle or mixed leaf litter under conifers and mixed deciduous trees. The fruiting bodies are small to medium mushrooms with a granular, powdery cap surface in shades of orange-red to cinnabar or brick red, which gives the species its name. The gills are white and the stipe has a granular surface below the annulus (ring), typical of the genus. Cystodermella cinnabarina is classified as Vulnerable, reflecting declines linked to eutrophication, changes in forest floor conditions, and the loss of traditional forest management practices that maintained suitable microhabitats. The species is associated with relatively undisturbed, low-nutrient woodland soil conditions and is sensitive to nitrogen enrichment, which promotes competitive vegetation that degrades its habitat. Molecular phylogenetics has clarified its placement within Agaricaceae, separating it from the related genus Cystoderma. The cinnabar powdercap is an indicator of woodland fungi diversity and habitat quality. Conservation of low-intensity managed forest with diverse floor conditions benefits this and related saprotrophic macrofungi.

Polar bear

地球上で最大の陸上肉食動物であるホッキョクグマは700kgを超えることがあり、カナダからロシアまでの北極海氷域全体に分布する。ワモンアザラシとヒゲアザラシを狩るために海氷に依存する高度に特化した海洋哺乳類である。広大な距離を泳ぐことができる優れた泳者でもある。脆弱種に指定されており、気候変動による急激な北極海氷の消失で個体群が深刻な圧力を受けている。