vs Polar bear

Clostridium celerecrescens compared with Ursus maritimus

Key Differences

is Not Evaluated while Polar bear is Vulnerable.

Taxonomic Classification

Rank		Polar bear
Kingdom	Bacteria (Bacteria)	Animalia (動物)
Phylum	Firmicutes_A	Chordata (脊索動物)
Class	Clostridia (クロストリジア)	Mammalia (哺乳類)
Order	Clostridiales (クロストリジウム目)	Carnivora (ネコ目)
Family	Clostridiaceae	Ursidae (Bears)
Genus	Clostridium	Ursus (Bears)
Species	Clostridium celerecrescens	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 Asia, inhabiting ecosystems characteristic of the region.

Range

Found in Taiwan.

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.

Clostridium celerecrescens is an anaerobic, endospore-forming bacterium in the family Clostridiaceae whose species epithet celerecrescens reflects its notably rapid growth rate compared to many other clostridia, which typically grow more slowly under anaerobic conditions. It is found in anaerobic environments including soils, sediments, and the digestive tracts of animals where fermentation of carbohydrates and organic compounds occurs. Like all Clostridium species, it is a strictly anaerobic, Gram-positive, rod-shaped bacterium capable of producing resistant endospores that permit survival under environmental stresses. The rapid growth phenotype of C. celerecrescens makes it of potential interest for industrial biotechnology applications where fast colonization and fermentation rates are advantageous, including in bioremediation of contaminated anaerobic environments or in bioprocessing systems designed to convert organic substrates into valuable products through anaerobic fermentation. The genus Clostridium represents one of the most metabolically diverse groups of bacteria, encompassing species producing ethanol, butanol, hydrogen gas, and various organic acids from diverse carbon sources.

Polar bear

地球上で最大の陸上肉食動物であるホッキョクグマは700kgを超えることがあり、カナダからロシアまでの北極海氷域全体に分布する。ワモンアザラシとヒゲアザラシを狩るために海氷に依存する高度に特化した海洋哺乳類である。広大な距離を泳ぐことができる優れた泳者でもある。脆弱種に指定されており、気候変動による急激な北極海氷の消失で個体群が深刻な圧力を受けている。