vs ours blanc

Bactrospora dryina compared with Ursus maritimus

Key Differences

is Critically Endangered while ours blanc is Vulnerable.

Taxonomic Classification

Rank		ours blanc
Kingdom	Fungi (Fungi)	Animalia (animal)
Phylum	Ascomycota (Sac Fungi)	Chordata (Chordates)
Class	Arthoniomycetes (Arthoniomycetes)	Mammalia (mammifères)
Order	Arthoniales (Arthoniales)	Carnivora (carnivores)
Family	Roccellaceae	Ursidae (Bears)
Genus	Bactrospora	Ursus (Bears)
Species	Bactrospora dryina	Ursus maritimus

Conservation Status

CR — Critically Endangered

ours blanc

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

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

Habitat & Geographic Range

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and boreal forests and taiga, among 5 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

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

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.

Bactrospora dryina is an exceptionally rare crustose lichen found on smooth bark of ancient oak trees in well-preserved Atlantic woodland. It produces elongated, lirellate fruiting bodies and is regarded as one of the most threatened lichens in Europe. Critically Endangered, it is restricted to a handful of old-growth oak woodland sites and is highly sensitive to changes in microclimate and air quality.

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.