vs Polar bear
Biddulphia rhombus 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 | Biddulphiales (Biddulphiales) | Carnivora (ネコ目) |
| Family | Biddulphiaceae | Ursidae (Bears) |
| Genus | Biddulphia | Ursus (Bears) |
| Species | Biddulphia rhombus | Ursus maritimus |
Conservation Status
Polar bear
VU — VulnerablePopulation: ~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
Native to Asia and Europe, inhabiting ecosystems characteristic of the region.
Distributed across Denmark, Sweden, and Taiwan.
Polar bear
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.
Found in Norway. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.
Biddulphia rhombusは、角状の突起を持つ明確な双極性、菱形ないし広披針形の殻形態を持つ中心目の海産珪藻類です。全世界の温帯から温暖な海の沿岸浮遊性・底生環境に生息します。この光合成珪藻類は沿岸近海の海洋一次生産に貢献しています。
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。
Related Comparisons
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