vs koala

Achnanthes armillaris compared with Phascolarctos cinereus

Key Differences

• is Not Evaluated while koala is Vulnerable.

Taxonomic Classification

Rank		koala
Kingdom	Chromista (色藻界)	Animalia (动物界)
Phylum	Ochrophyta (淡色藻门)	Chordata (脊索动物门)
Class	Bacillariophyceae (硅藻纲)	Mammalia (哺乳動物)
Order	Achnanthales (曲壳藻目)	Diprotodontia (雙門齒目)
Family	Achnanthaceae	Phascolarctidae (Koalas)
Genus	Achnanthes	Phascolarctos (Koalas)
Species	Achnanthes armillaris	Phascolarctos cinereus

Conservation Status

NE — Not Evaluated

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute		koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

Habitat & Geographic Range

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway and Sweden.

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.

环纹曲壳藻（Achnanthes armillaris）是曲壳藻科中的一种小型单缝硅藻，生活在淡水和微咸水底栖环境中。其硅质壳体具有典型的弓形结构，仅一侧具有壳缝，依附于基质表面生长。该物种是水质监测的重要指示生物，常用于评估水体环境状况。

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。