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 (动物界)
Phylum	Magnoliophyta (木兰植物门)	Chordata (脊索动物门)
Class	Magnoliopsida (木兰纲)	Mammalia (哺乳動物)
Order	Proteales (山龙眼目)	Carnivora (食肉目)
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

北极熊是地球上最大的陆地食肉动物，体重可超过700千克，分布于从加拿大到俄罗斯的北极海冰区。是高度特化的海洋哺乳动物，依赖海冰捕猎环斑海豹和髯海豹。是优秀的游泳者，能够横渡广阔的开阔水域。被列为易危种，因气候变化导致北极海冰迅速减少，种群正受到严重威胁。