vs Oso Polar

Chrysochromulina quadrikonta compared with Ursus maritimus

Key Differences

is Not Evaluated while Oso Polar is Vulnerable.

Taxonomic Classification

Rank		Oso Polar
Kingdom	Chromista (Chromista)	Animalia (Animals)
Phylum	Haptophyta (Haptophyta)	Chordata (cordados)
Class	Prymnesiophyceae (Prymnesiophyceae)	Mammalia (mamíferos)
Order	Prymnesiales (Prymnesiales)	Carnivora (carnívoros)
Family	Chrysochromulinaceae	Ursidae (Bears)
Genus	Chrysochromulina	Ursus (Bears)
Species	Chrysochromulina quadrikonta	Ursus maritimus

Conservation Status

NE — Not Evaluated

Oso Polar

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute		Oso Polar
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.

Oso Polar

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.

Oso Polar

El mayor carnivoro terrestre de la Tierra, el oso polar puede superar los 700 kg y se encuentra en el hielo marino del Artico, desde Canada hasta Rusia. Es un mamifero marino altamente especializado que depende del hielo marino para cazar focas anilladas y barbadas. Excelente nadador capaz de cubrir grandes distancias en agua abierta. Clasificado como Vulnerable, sus poblaciones soportan una presion severa por la rapida perdida de hielo marino artico debida al cambio climatico.