vs Polar bear

Chromosera citrinopallida compared with Ursus maritimus

Key Differences

is Least Concern while Polar bear is Vulnerable.

Taxonomic Classification

Rank		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	Hygrophoraceae	Ursidae (Bears)
Genus	Chromosera	Ursus (Bears)
Species	Chromosera citrinopallida	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 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.

Chromosera citrinopallida is a species of waxcap mushroom in the family Hygrophoraceae, found in old-growth grasslands and woodland pastures in Europe. Waxcap fungi of the family Hygrophoraceae are characteristic species of unimproved grasslands that have not been subject to fertilization, plowing, or herbicide application for many decades. These grassland waxcap communities are considered indicators of high ecological value and ancient, undisturbed grassland continuity. The fruiting bodies of Chromosera citrinopallida are small and typically display pale yellowish or citrine coloration, as suggested by the specific epithet. Waxcap grasslands of northern and western Europe, including those in the United Kingdom, Scandinavia, and the Baltic states, support exceptional diversity of fungi including waxcaps, earthtongues, and clavarioid species, and are recognized as priority habitats for conservation. Chromosera citrinopallida, like many specialist grassland fungi, is sensitive to changes in soil chemistry caused by fertilizer application, which alters fungal community composition and eliminates specialist species. The species is likely to have declined alongside the widespread loss of traditional meadow and pasture management across Europe during the twentieth century.

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。