Aulne de la sierra vs ours blanc

Alnus rhombifolia compared with Ursus maritimus

Key Differences

Aulne de la sierra is Least Concern while ours blanc is Vulnerable.

Taxonomic Classification

Rank	Aulne de la sierra	ours blanc
Kingdom	Plantae (plante)	Animalia (animal)
Phylum	Magnoliophyta (Flowering Plants)	Chordata (Chordates)
Class	Magnoliopsida (Dicots)	Mammalia (mammifères)
Order	Fagales (Beeches & Oaks)	Carnivora (carnivores)
Family	Betulaceae	Ursidae (Bears)
Genus	Alnus	Ursus (Bears)
Species	Alnus rhombifolia	Ursus maritimus

Conservation Status

Aulne de la sierra

LC — Least Concern

ours blanc

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Aulne de la sierra	ours blanc
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Aulne de la sierra

Habitat

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

Range

Found in Canada.

ours blanc

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.

Aulne de la sierra

The California alder (Alnus rhombifolia) is a species in the genus Alnus. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

ours blanc

The largest land carnivore on Earth, polar bears can exceed 700 kg and are found across Arctic sea ice from Canada to Russia. Highly specialized marine mammals that rely on sea ice to hunt ringed and bearded seals. Excellent swimmers capable of covering vast distances in open water. Listed as Vulnerable, with populations under severe pressure from rapid Arctic sea ice loss due to climate change.