vs Polar bear

Alexandrium minutum compared with Ursus maritimus

Key Differences

  • is Not Evaluated while Polar bear is Vulnerable.

Taxonomic Classification

Rank Polar bear
Kingdom Chromista (クロミスタ) Animalia (動物)
Phylum Myzozoa (ミゾゾア門) Chordata (脊索動物)
Class Dinophyceae (渦鞭毛藻) Mammalia (哺乳類)
Order Gonyaulacales (Gonyaulacales) Carnivora (ネコ目)
Family Ostreopsidaceae Ursidae (Bears)
Genus Alexandrium Ursus (Bears)
Species Alexandrium minutum Ursus maritimus

Conservation Status

NE — Not Evaluated

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

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

Habitat & Geographic Range

Habitat

Native to Africa and Asia and Europe, inhabiting ecosystems characteristic of the region.

Range

Widely distributed across Africa (Egypt, South Africa), Asia (4 countries), Europe (8 countries), North America (Mexico), and Oceania and the Pacific (Australia).

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.

Alexandrium minutumは麻痺性貝毒の原因となるサキシトキシンを産生することで知られる小型の装甲海洋渦鞭毛藻である。世界中の温帯から温暖な沿岸・河口域に生息する。有害藻類ブルームを形成し、濾過摂食性二枚貝の体内に毒素が蓄積する原因となる。

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。

Shared Countries

Both species can be found in 1 countries:

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