vs Polar bear

Chrysochromulina quadrikonta 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 quadrikonta	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 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 quadrikonta is a marine haptophyte microalga in the genus Chrysochromulina, class Prymnesiophyceae. The specific epithet quadrikonta derives from Greek roots meaning four appendages or four-pointed, likely describing a scale form with four projections or a four-pointed spine structure on the cell surface, a morphological character used to distinguish it from other species in the genus. The Chrysochromulina scale repertoire includes simple plates, scales with spines, scales with cylinders, and various complex three-dimensional forms, and four-pointed configurations occur among several species. C. quadrikonta has been recorded from Norwegian coastal marine environments, continuing the pattern of Chrysochromulina species concentration in Scandinavian waters that has emerged from decades of electron microscopy-based phycological surveys. Norwegian coastal habitats including fjords, estuaries, and open shelf areas support rich microalgal communities in which haptophytes are frequently abundant. The species is a nanoplankton organism capable of photosynthesis through the standard prymnesiophyte pigment system, and likely engages in mixotrophic nutrition supplementing photosynthate with bacterivory. The haptonema, coiled or extended depending on physiological state, is a key functional organelle enabling prey detection and capture. C. quadrikonta has not been evaluated under IUCN Red List criteria and is classified as Not Evaluated. Continued molecular and morphological studies of Norwegian Chrysochromulina populations will further clarify species boundaries and global distribution patterns within this diverse genus.

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.