vs Polar bear

Comatricha filamentosa compared with Ursus maritimus

Key Differences

• is Not Evaluated while Polar bear is Vulnerable.

Taxonomic Classification

Rank		Polar bear
Kingdom	Protozoa (protozoa)	Animalia (Animals)
Phylum	Mycetozoa	Chordata (Chordates)
Class	Myxomycetes (Myxomycetes)	Mammalia (Mammals)
Order	Stemonitidales	Carnivora (Carnivorans)
Family	Stemonitidaceae	Ursidae (Bears)
Genus	Comatricha	Ursus (Bears)
Species	Comatricha filamentosa	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.

<em>Comatricha filamentosa</em> is a myxomycete belonging to the genus <em>Comatricha</em>, order Stemonitidales, class Myxomycetes. The species is distinguished within the genus by features of its filamentous capillitial threads and spore morphology, which are used as diagnostic characters in taxonomic identification. It has been recorded from Europe, where it inhabits decaying wood and plant litter in forest and woodland habitats. Like other plasmodial slime molds, <em>C. filamentosa</em> passes through a motile plasmodial feeding stage, consuming bacteria, fungi, and decomposing organic matter, before forming fruiting bodies under conditions of environmental stress or nutritional depletion. The resulting sporangia release spores suited for wind dispersal. This species plays a role in nutrient cycling within woodland ecosystems. No quantitative biological metrics are available, and it has not been assessed by the IUCN.

Polar bear

The largest land carnivore on Earth, polar bears can exceed 700 kg and are found across Arctic sea ice from Canada to Russia. Highly specialized marine mammals that rely on sea ice to hunt ringed and bearded seals. Excellent swimmers capable of covering vast distances in open water. Listed as Vulnerable, with populations under severe pressure from rapid Arctic sea ice loss due to climate change.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway