Common wireweed vs Polar bear

Sida acuta compared with Ursus maritimus

Key Differences

Common wireweed is Not Evaluated while Polar bear is Vulnerable.

Taxonomic Classification

Rank	Common wireweed	Polar bear
Kingdom	Plantae (植物)	Animalia (動物)
Phylum	Magnoliophyta (被子植物門)	Chordata (脊索動物)
Class	Magnoliopsida (モクレン綱)	Mammalia (哺乳類)
Order	Malvales (アオイ目)	Carnivora (ネコ目)
Family	Malvaceae	Ursidae (Bears)
Genus	Sida	Ursus (Bears)
Species	Sida acuta	Ursus maritimus

Conservation Status

Common wireweed

NE — Not Evaluated

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

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

Habitat & Geographic Range

Common wireweed

Habitat

Inhabits deserts and xeric shrublands within the Afrotropic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (18 countries), Asia (18 countries), Europe (Spain), North America (4 countries), Oceania and the Pacific (12 countries), and South America (Brazil, Colombia).

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.

Common wireweed

<em>Sida acuta</em>, commonly known as common wireweed or broom jute, is a small woody-based shrub in the family Malvaceae. Its conservation status is listed as Not Evaluated by the IUCN. The species has an extremely broad distribution spanning Africa, Asia, Europe, the Americas, and Oceania, reflecting its status as both a native species in parts of tropical and subtropical regions and a widely naturalized weed in disturbed habitats globally. It typically grows in roadsides, cultivated fields, waste ground, and degraded grasslands in warm climates, often colonizing disturbed and compacted soils where few other plants thrive. <em>Sida acuta</em> is a branching perennial shrub typically reaching 50–100 cm in height, with lance-shaped toothed leaves, small pale yellow five-petaled flowers, and distinctive star-shaped stellate hairs on stems and leaves. The plant produces schizocarp fruits that split into individual hard segments each bearing a seed, facilitating dispersal by animals, water, and machinery. Several parts of the plant are used in traditional medicine across its range for treating a variety of conditions. Biological traits including average lifespan, precise height, and mass remain poorly documented in standardized databases. Ecologically, common wireweed is considered an invasive species in many regions, but also provides small-scale cover and foraging habitat for invertebrates in disturbed environments throughout its vast pantropical and warm-temperate global distribution.

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。