vs Polar bear

Nitzschia bacillum 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 Ochrophyta (オクロ植物) Chordata (脊索動物)
Class Bacillariophyceae (クサリケイソウ綱) Mammalia (哺乳類)
Order Bacillariales (Bacillariales) Carnivora (ネコ目)
Family Bacillariaceae Ursidae (Bears)
Genus Nitzschia Ursus (Bears)
Species Nitzschia bacillum 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 Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway, Portugal, and Sweden.

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.

Nitzschia bacillumは円筒形の輪郭と竜骨位置の縫合線を持つ小型で棒状の羽状珪藻である。世界中の温帯および亜熱帯地域の河川、小川、湖沼の底生基質に生息する。この光合成珪藻は多様な淡水環境において付着性微細藻類バイオフィルム群集の一部を形成する。

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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