Polar bear vs

Ursus maritimus compared with Tolypothrix rivularis

Key Differences

  • Polar bear is Vulnerable while is Not Evaluated.

Taxonomic Classification

Rank Polar bear
Kingdom Animalia (動物) Bacteria (Bacteria)
Phylum Chordata (脊索動物) Cyanobacteria (藍藻)
Class Mammalia (哺乳類) Cyanobacteriia
Order Carnivora (ネコ目) Cyanobacteriales
Family Ursidae (Bears) Tolypothrichaceae
Genus Ursus (Bears) Tolypothrix
Species Ursus maritimus Tolypothrix rivularis

Conservation Status

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

NE — Not Evaluated

Physical Characteristics

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

Habitat & Geographic Range

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.

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway and Sweden.

Polar bear

地球上で最大の陸上肉食動物であるホッキョクグマは700kgを超えることがあり、カナダからロシアまでの北極海氷域全体に分布する。ワモンアザラシとヒゲアザラシを狩るために海氷に依存する高度に特化した海洋哺乳類である。広大な距離を泳ぐことができる優れた泳者でもある。脆弱種に指定されており、気候変動による急激な北極海氷の消失で個体群が深刻な圧力を受けている。

Tolypothrix rivularisは淡水の小川・川・池で見られる異形細胞含有糸状シアノバクテリアで、流水生息地の岩石や水生植物に付着する。異形細胞を通じて大気中の窒素を固定し、属の特徴である偽分枝フィラメントを形成する。温帯流水淡水生態系の栄養素循環に寄与する。

Shared Countries

Both species can be found in 1 countries:

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