Brittle Bladderfern vs Polar bear

Cystopteris tenuis compared with Ursus maritimus

Key Differences

Brittle Bladderfern is Not Evaluated while Polar bear is Vulnerable.

Taxonomic Classification

Rank	Brittle Bladderfern	Polar bear
Kingdom	Plantae (plantas)	Animalia (Animals)
Phylum	Tracheophyta	Chordata (cordados)
Class	Polypodiopsida (Polypodiopsida)	Mammalia (mamíferos)
Order	Polypodiales (Polypodiales)	Carnivora (carnívoros)
Family	Cystopteridaceae	Ursidae (Bears)
Genus	Cystopteris	Ursus (Bears)
Species	Cystopteris tenuis	Ursus maritimus

Conservation Status

Brittle Bladderfern

NE — Not Evaluated

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Brittle Bladderfern	Polar bear
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Brittle Bladderfern

Habitat

Typically found in moist, shaded forest floors and tropical canopies.

Range

Distributed across Canada and United States.

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.

Brittle Bladderfern

The Brittle Bladderfern (Cystopteris tenuis) is a species in the genus Cystopteris. Typically found in moist, shaded forest floors and tropical canopies.

Polar bear

O maior carnivoro terrestre da Terra, o urso-polar pode ultrapassar 700 kg e e encontrado pelo gelo marinho artico, do Canada ate a Russia. Mamiferos marinhos altamente especializados que dependem do gelo marinho para cacas de focas e focas-barbadas. Excelentes nadadores capazes de percorrer grandes distancias em aguas abertas. Classificado como Vulneravel, com populacoes sob severa pressao devido a rapida perda de gelo marinho artico causada pelas mudancas climaticas.