Canadian beaver vs Common Reed

Castor canadensis compared with Phragmites australis

Key Differences

Canadian beaver is Not Evaluated while Common Reed is Least Concern.

Taxonomic Classification

Rank	Canadian beaver	Common Reed
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Magnoliophyta (Flowering Plants)
Class	Mammalia (Mammals)	Liliopsida (Monocots)
Order	Rodentia (Rodents)	Poales (Grasses)
Family	Castoridae (Beavers)	Poaceae (Grass Family)
Genus	Castor (Beavers)	Phragmites
Species	Castor canadensis	Phragmites australis

Conservation Status

Canadian beaver

NE — Not Evaluated

Population: ~15.0M

Trend: Stable →

Common Reed

LC — Least Concern

Physical Characteristics

Attribute	Canadian beaver	Common Reed
Diet	Herbivore	—
Average Lifespan	15 years	—
Average Length	1.0 m	—
Average Weight	25.0 kg	—

Habitat & Geographic Range

Canadian beaver

Habitat

Typically found in grasslands, forests, and vegetated habitats.

Range

Widely distributed across Europe (15 countries), North America (United States), and South America (Argentina, Chile).

Common Reed

Habitat

Found across multiple habitat types including flooded grasslands and savannas, deserts and xeric shrublands, and temperate broadleaf and mixed forests, among 6 distinct biome types spanning the Afrotropic and Palearctic and Indomalayan realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (4 countries), Asia (Iran, Pakistan, Taiwan), Europe (7 countries), North America (Canada, United States), Oceania and the Pacific (Australia, New Zealand), and South America (4 countries).

Canadian beaver

The largest rodent in North America, Canadian beavers weigh up to 32 kg and are master ecosystem engineers inhabiting rivers, lakes, and wetlands across Canada and the northern United States. By felling trees and constructing dams up to hundreds of meters long, beavers create ponds that provide habitat for hundreds of species. Their lodges and canals transform entire watersheds. Once nearly hunted to extinction for their fur, beaver populations have recovered strongly.

Common Reed

<em>Phragmites australis</em>, the common reed, is one of the most widely distributed vascular plants on Earth, placed in the family Poaceae, order Poales. Its range encompasses all inhabited continents, including Africa, Asia, Europe, North America, Oceania, and South America, typically colonizing freshwater margins, brackish marshes, lake shores, riverbanks, and coastal wetlands. The species is assessed as Least Concern by the IUCN, with globally abundant populations, though some regional variants are subject to conservation concern. Common reed typically forms dense monoculture stands reaching heights of two to six meters, providing critical habitat structure for a wide range of wetland birds, invertebrates, and small mammals. It is a rhizomatous perennial grass, spreading vegetatively through extensive underground root systems as well as by wind-dispersed seeds. As an autotroph, <em>Phragmites australis</em> obtains energy through photosynthesis and plays a major role in nutrient cycling and carbon sequestration within wetland ecosystems. The species has significant economic value in thatching, basketry, and constructed wetland wastewater treatment systems. In North America, an introduced European genotype has become invasive, displacing native plant communities. Biological traits vary considerably across its global range.