Clustered Holly vs Polar bear

Ilex aggregata compared with Ursus maritimus

Key Differences

Clustered Holly is Least Concern while Polar bear is Vulnerable.

Taxonomic Classification

Rank	Clustered Holly	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	Aquifoliales (モチノキ目)	Carnivora (ネコ目)
Family	Aquifoliaceae	Ursidae (Bears)
Genus	Ilex	Ursus (Bears)
Species	Ilex aggregata	Ursus maritimus

Conservation Status

Clustered Holly

LC — Least Concern

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

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

Habitat & Geographic Range

Clustered Holly

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

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.

Clustered Holly

Ilex aggregata is a holly in the family Aquifoliaceae. The genus Ilex is the largest genus in its family, comprising approximately 600 species distributed across tropical and subtropical regions of all continents except Antarctica and Australia, with diversity centers in South America and Asia. I. aggregata appears to be a South American or neotropical species, consistent with the high diversity of the genus in that region. Hollies are evergreen or deciduous shrubs and trees with typically leathery, often spiny leaves. They are dioecious, with male and female flowers borne on separate plants, and produce characteristic fleshy drupes (berries) that are often red, orange, or black when ripe, providing food for birds and other frugivores that disperse the seeds. Many Ilex species are adapted to forest understory, forest margins, and montane habitats. Holly berries and leaves are generally toxic to mammals, though consumed by certain birds. I. aggregata is classified as Least Concern by the IUCN. Detailed habitat and distribution data for this species are limited in publicly available records.

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。