Common Clusterhead vs Polar bear

Sorocephalus lanatus compared with Ursus maritimus

Key Differences

Common Clusterhead is Least Concern while Polar bear is Vulnerable.

Taxonomic Classification

Rank	Common Clusterhead	Polar bear
Kingdom	Plantae (植物)	Animalia (動物)
Phylum	Magnoliophyta (被子植物門)	Chordata (脊索動物)
Class	Magnoliopsida (モクレン綱)	Mammalia (哺乳類)
Order	Proteales (ヤマモガシ目)	Carnivora (ネコ目)
Family	Proteaceae	Ursidae (Bears)
Genus	Sorocephalus	Ursus (Bears)
Species	Sorocephalus lanatus	Ursus maritimus

Conservation Status

Common Clusterhead

LC — Least Concern

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

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

Habitat & Geographic Range

Common Clusterhead

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

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.

Common Clusterhead

<em>Sorocephalus lanatus</em> is a flowering plant in the family Proteaceae, order Proteales. Commonly referred to as the common clusterhead, this species is native to the Cape Floristic Region and is characteristic of fynbos shrubland, a biome recognized for its extraordinary plant diversity and high levels of endemism. The species is classified as Least Concern on the IUCN Red List, suggesting its populations are relatively stable within its native range. <em>Sorocephalus lanatus</em> typically grows as a compact shrub, producing dense, woolly flowerheads that are characteristic of the genus. It favors nutrient-poor, well-drained soils typical of the fynbos ecosystem and is adapted to the periodic fire cycles that shape this habitat. The species is pollinated primarily by insects and birds attracted to its clustered inflorescences. Biological traits of this species remain poorly documented in the scientific literature.

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。