vs Polar bear

Chrysochromulina bergenensis compared with Ursus maritimus

Key Differences

is Not Evaluated while Polar bear is Vulnerable.

Taxonomic Classification

Rank		Polar bear
Kingdom	Chromista (크로미스타)	Animalia (동물)
Phylum	Haptophyta (착편모조류)	Chordata (척삭동물)
Class	Prymnesiophyceae (프림네시움강)	Mammalia (포유류)
Order	Prymnesiales (프림네시움목)	Carnivora (식육목)
Family	Chrysochromulinaceae	Ursidae (Bears)
Genus	Chrysochromulina	Ursus (Bears)
Species	Chrysochromulina bergenensis	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 bergenensis is a unicellular marine haptophyte named after Bergen, Norway, near where it was first described, reflecting the strong tradition of phycological research centered on the Norwegian coast. It belongs to the genus Chrysochromulina, family Chrysochromulinaceae, class Prymnesiophyceae — a group of golden-brown microalgae distinguished by possession of a haptonema alongside two flagella. The haptonema is a flagella-like appendage unique to haptophytes that functions in prey capture and temporary substrate attachment. C. bergenensis is a nanoplankton species inhabiting coastal marine and occasionally brackish waters, and has been documented from Norwegian and Swedish coastal regions as well as from South American waters including Brazil, indicating a broader distribution than its type locality might suggest. In oligotrophic to mesotrophic marine environments, Chrysochromulina species including C. bergenensis contribute to picoeukaryotic and nanoeukaryotic primary production. The cell surface is ornamented with siliceous or organic scales whose morphology is species-diagnostic. Mixotrophy — the ability to both photosynthesize and ingest particulate food — is common across the genus and likely occurs in this species. C. bergenensis has not been assessed under IUCN Red List criteria and is classified as Not Evaluated. In ecological terms, haptophytes occupy key roles in oceanic carbon export, nutrient cycling, and as prey items for heterotrophic protists and copepods in temperate and boreal Atlantic food webs.

Polar bear

지구상에서 가장 큰 육상 육식동물인 북극곰은 700kg을 넘을 수 있으며 캐나다에서 러시아까지 북극 해빙 전역에 분포한다. 고리 물범과 수염 물범을 사냥하기 위해 해빙에 의존하는 고도로 특수화된 해양 포유류이다. 광활한 거리를 헤엄쳐 다닐 수 있는 뛰어난 수영 실력을 가지고 있다. 취약종으로 등재되어 있으며, 기후 변화로 인한 급격한 북극 해빙 감소로 심각한 압력을 받고 있다.