Narrowleaf knotweed vs Bely Medved

Polygonum bellardii compared with Ursus maritimus

Key Differences

• Narrowleaf knotweed is Not Evaluated while Bely Medved is Vulnerable.

Taxonomic Classification

Rank	Narrowleaf knotweed	Bely Medved
Kingdom	Plantae (растения)	Animalia (животные)
Phylum	Magnoliophyta (магнолиофиты)	Chordata (хордовые)
Class	Magnoliopsida (Dicots)	Mammalia (млекопитающие)
Order	Caryophyllales (гвоздичноцветные)	Carnivora (хищные)
Family	Polygonaceae	Ursidae (Bears)
Genus	Polygonum	Ursus (Bears)
Species	Polygonum bellardii	Ursus maritimus

Conservation Status

Narrowleaf knotweed

NE — Not Evaluated

Bely Medved

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Narrowleaf knotweed	Bely Medved
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Narrowleaf knotweed

Habitat

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

Range

Widely distributed across Europe (12 countries), North America (United States), and Oceania and the Pacific (Australia).

Bely Medved

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.

Bely Medved

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.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway