Blauwal vs Birken-Gürtelfuß

Balaenoptera musculus compared with Cortinarius bivelus

Key Differences

Blauwal is Vulnerable while Birken-Gürtelfuß is Data Deficient.

Taxonomic Classification

Rank	Blauwal	Birken-Gürtelfuß
Kingdom	Animalia (Tier)	Fungi (Pilze)
Phylum	Chordata (Chordatiere)	Basidiomycota (Ständerpilze)
Class	Mammalia (Säugetiere)	Agaricomycetes (Mushrooms)
Order	Cetacea (Whales & Dolphins)	Agaricales (Champignonartige)
Family	Balaenopteridae (Rorquals)	Cortinariaceae
Genus	Balaenoptera (Rorquals)	Cortinarius
Species	Balaenoptera musculus	Cortinarius bivelus

Conservation Status

Blauwal

VU — Vulnerable

Population: ~15.0K

Trend: Increasing ↑

Birken-Gürtelfuß

DD — Data Deficient

Physical Characteristics

Attribute	Blauwal	Birken-Gürtelfuß
Diet	Carnivore	—
Average Lifespan	90 years	—
Average Length	30.0 m	—
Average Weight	150.0 t	—

Habitat & Geographic Range

Blauwal

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 11 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), and South America (Colombia, Ecuador). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Birken-Gürtelfuß

Habitat

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

Distributed across Belgium, Denmark, Norway, Sweden, and United States.

Blauwal

The largest animal ever known to have lived on Earth, blue whales can reach 33 meters and 200 tonnes — their hearts alone weigh as much as a small car. Found in all oceans, they migrate between polar feeding grounds and tropical breeding areas. Filter feeders consuming up to 4 tonnes of krill daily. Endangered, with global populations estimated at 10,000–25,000 after near-extinction from 20th-century whaling.

Birken-Gürtelfuß

Cortinarius bivelus is a mycorrhizal agaric fungus in the family Cortinariaceae, assessed as Data Deficient (DD). Like other members of the genus, it forms ectomycorrhizal associations with forest trees and produces a characteristic cobweb-like cortina veil when young. Insufficient data on its distribution and population size prevent a reliable conservation assessment.