Pacific yam vs Polar bear

Dioscorea nummularia compared with Ursus maritimus

Key Differences

• Pacific yam is Near Threatened while Polar bear is Vulnerable.

Taxonomic Classification

Rank	Pacific yam	Polar bear
Kingdom	Plantae (plantas)	Animalia (Animals)
Phylum	Magnoliophyta (Flowering Plants)	Chordata (cordados)
Class	Liliopsida (Monocots)	Mammalia (mamíferos)
Order	Dioscoreales (Dioscoreales)	Carnivora (carnívoros)
Family	Dioscoreaceae	Ursidae (Bears)
Genus	Dioscorea	Ursus (Bears)
Species	Dioscorea nummularia	Ursus maritimus

Conservation Status

Pacific yam

NT — Near Threatened

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

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

Habitat & Geographic Range

Pacific yam

Habitat

Inhabits tropical and subtropical moist broadleaf forests and tropical and subtropical dry broadleaf forests within the Indomalayan biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Laos. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.

Polar bear

O maior carnivoro terrestre da Terra, o urso-polar pode ultrapassar 700 kg e e encontrado pelo gelo marinho artico, do Canada ate a Russia. Mamiferos marinhos altamente especializados que dependem do gelo marinho para cacas de focas e focas-barbadas. Excelentes nadadores capazes de percorrer grandes distancias em aguas abertas. Classificado como Vulneravel, com populacoes sob severa pressao devido a rapida perda de gelo marinho artico causada pelas mudancas climaticas.