vs Polar bear

Cylindrotheca closterium 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 Cylindrotheca Ursus (Bears)
Species Cylindrotheca closterium 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 Asia and Europe and South America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Brazil, Norway, Oman, Sweden, and Taiwan.

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.

Cylindrotheca closteriumは、世界中の沿岸堆積物、潮間帯泥干潟、底生生物膜に一般的な細長い針状の海洋・汽水珪藻類である。紡錘形のシリカ殻は両端が細い先端に向かって細くなる。この種は河口や浅い沿岸生態系における重要な一次生産者であり、堆積物表面に密なマットを形成することがある。

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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