EN

Least Stonewort

Nitella confervacea

Unknown

Overview

Least Stonewort (Nitella confervacea) is a delicate freshwater charophyte algae characterized by its translucent green, branching structure that resembles an underwater plant. This species forms dense underwater meadows in shallow waters and plays a crucial ecological role by providing oxygen, stabilizing sediments, and creating habitat for aquatic invertebrates and fish spawning areas.

Least Stonewort (Nitella confervacea) is declining primarily due to habitat loss and degradation of its freshwater aquatic environments. Water pollution, eutrophication from agricultural runoff, and physical disturbance of shallow water bodies have severely reduced suitable habitat for this charophyte algae.

Threat summary

Habitat

Least Stonewort inhabits shallow, clear freshwater environments including pristine lakes, slow-moving streams, and temporary pools with sandy or muddy substrates. The species requires low-nutrient, alkaline waters with good light penetration and minimal disturbance from wave action or human activities.

Frequently asked questions

Why is Least Stonewort classified as Endangered?
Least Stonewort is classified as Endangered — facing a very high risk of extinction in the wild — because population numbers are declining steeply and key habitats are under sustained pressure. Least Stonewort (Nitella confervacea) is declining primarily due to habitat loss and degradation of its freshwater aquatic environments. Water pollution, eutrophication from agricultural runoff, and physical disturbance of shallow water bodies have severely reduced suitable habitat for this charophyte algae.
Where does Least Stonewort live?
Least Stonewort occurs in across multiple regions. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Least Stonewort?
The main threats to Least Stonewort are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

Get weekly conservation intelligence

One short digest a week of the most striking species and country data we ship, plus breaking conservation news paired with our database where it matters.

Free, no spam. One-click unsubscribe in every email.