vs

Navicula caterva compared with Navicula digitoradiata

Taxonomic Classification

Rank
Kingdom same	Chromista (Chromista)	Chromista (Chromista)
Phylum same	Ochrophyta (Ochrophyta)	Ochrophyta (Ochrophyta)
Class same	Bacillariophyceae (Bacillariophyceae)	Bacillariophyceae (Bacillariophyceae)
Order same	Naviculales (Naviculales)	Naviculales (Naviculales)
Family same	Naviculaceae	Naviculaceae
Genus same	Navicula	Navicula
Species	Navicula caterva	Navicula digitoradiata

Evolutionary Relationship

and share a common ancestor at the Genus level: Navicula.

Conservation Status

NE — Not Evaluated

NE — Not Evaluated

Physical Characteristics

Attribute
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway and Sweden.

Habitat

Native to Asia and Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway, Sweden, and Taiwan.

Navicula caterva is a freshwater pennate diatom in the family Naviculaceae, forming aggregations in benthic communities on sediment and submerged surfaces. Its symmetrically lanceolate frustule and central raphe are characteristic of the large and cosmopolitan genus Navicula. As a bioindicator, it is used in assessments of freshwater quality and trophic status.

Navicula digitoradiata is a pennate freshwater diatom with a lanceolate outline and finger-like radiating striae extending from a central nodule. It inhabits epipelic benthic zones in rivers, lakes, and brackish environments across temperate and subtropical regions. This photosynthetic diatom contributes to sediment surface biofilm communities.

Shared Countries

Both species can be found in 2 countries:

🇳🇴 Norway 🇸🇪 Sweden