vs Polar bear

Chrysochromulina adriatica 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	Haptophyta (ハプト藻)	Chordata (脊索動物)
Class	Prymnesiophyceae (Prymnesiophyceae)	Mammalia (哺乳類)
Order	Prymnesiales (Prymnesiales)	Carnivora (ネコ目)
Family	Chrysochromulinaceae	Ursidae (Bears)
Genus	Chrysochromulina	Ursus (Bears)
Species	Chrysochromulina adriatica	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 and South America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Brazil, Norway, 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.

Chrysochromulina adriatica is a species of haptophyte alga in the family Prymnesiaceae, described from the Adriatic Sea. Haptophytes are a distinctive group of marine and freshwater eukaryotic algae characterized by the possession of a haptonema — a coiling appendage between the two flagella that serves in prey capture or substrate attachment. The genus Chrysochromulina is one of the most species-rich genera of haptophytes, with over a hundred described species. Chrysochromulina species are typically covered with elaborate organic scales, the intricate structure of which is used for species identification, often requiring electron microscopy. Members of the genus are found in marine and brackish environments worldwide and can be significant components of the nano- and picoplankton. Most species are mixotrophic, capable of both photosynthesis and phagotrophy. Some Chrysochromulina species, such as Chrysochromulina leadbeateri and Prymnesium parvum (a related genus), are known for the production of toxic compounds during bloom events that have caused fish kills in coastal and aquaculture settings. Chrysochromulina adriatica, described from the Adriatic Sea, contributes to the diverse marine microalgal community of the Mediterranean basin. The species has not been assessed by the IUCN.

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。