Coastal Sage Scrub Oak vs koala

Quercus dumosa compared with Phascolarctos cinereus

Key Differences

• Coastal Sage Scrub Oak is Endangered while koala is Vulnerable.

Taxonomic Classification

Rank	Coastal Sage Scrub Oak	koala
Kingdom	Plantae (植物)	Animalia (动物界)
Phylum	Magnoliophyta (木兰植物门)	Chordata (脊索动物门)
Class	Magnoliopsida (木兰纲)	Mammalia (哺乳動物)
Order	Fagales (壳斗目)	Diprotodontia (雙門齒目)
Family	Fagaceae (Beech Family)	Phascolarctidae (Koalas)
Genus	Quercus (Oaks)	Phascolarctos (Koalas)
Species	Quercus dumosa	Phascolarctos cinereus

Conservation Status

Coastal Sage Scrub Oak

EN — Endangered

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Coastal Sage Scrub Oak	koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

Habitat & Geographic Range

Coastal Sage Scrub Oak

Habitat

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

koala

Habitat

Typically found in grasslands, forests, and vegetated habitats.

Range

Found in Australia. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Coastal Sage Scrub Oak

Coastal sage scrub oak (Quercus dumosa) is a small evergreen oak in the family Fagaceae, endemic to the California Floristic Province, occurring in fragmented populations across coastal and foothill areas of southern California and northern Baja California, Mexico. It grows in coastal sage scrub and chaparral communities on thin, rocky, or sandy soils, typically below 900 metres elevation. This shrubby oak rarely exceeds 2 metres and produces small, spiny-margined evergreen leaves and acorns that provide critical food for acorn woodpeckers, scrub jays, mule deer, and other wildlife. Quercus dumosa is assessed as Endangered by the IUCN, with its range having contracted severely due to urbanisation of the Southern California coast, fire suppression altering vegetation dynamics, invasive annual grasses, and prolonged drought associated with climate change. Many populations are now isolated fragments in remaining coastal sage scrub, one of the most threatened plant communities in North America. The species is protected under various Californian conservation plans, and seed banking and restoration planting efforts are ongoing to bolster declining populations.

koala

澳大利亚东部和东南部的标志性有袋类动物，体重最大可达15千克，为了节省低热量桉树叶食物所提供的能量，每天最多睡眠22小时。高度特化，能够处理会致大多数其他哺乳动物死亡的有毒桉树成分，拥有专门适应解毒功能的肠道微生物群。因衣原体病、栖息地开发和气候变化导致种群锐减，2022年被列为濒危物种。