CRCritically Endangered

Sphaeroplea annulina

Local name: rødsporetråd

Conservation status data sourced from the IUCN Red List of Threatened Species.

01Classification

Taxonomy & Classification

Kingdom

Plantae

Phylum

Chlorophyta

Class

Chlorophyceae

Order

Chlamydomonadales

Family

Sphaeropleaceae

Genus

Sphaeroplea

Sphaeroplea annulina belongs to the family Sphaeropleaceae, order Chlamydomonadales, within the Chlorophyceae class.

02Description

Species Profile

Species profile data sourced from the IUCN Red List of Threatened Species.

Sphaeroplea annulina faces severe threats from habitat degradation due to water pollution, eutrophication, and climate-induced changes to freshwater ecosystems. The species' specialized reproductive requirements and narrow ecological niche make it particularly vulnerable to environmental disturbances that alter water chemistry and temperature regimes.

Key Facts

IUCN StatusCritically Endangered (CR)
GroupPlants
03Habitat

Habitat & Distribution

Shallow freshwater pools, temporary ponds, and slow-moving streams with nutrient-rich waters, typically in temperate regions with seasonal flooding patterns. The species requires specific water chemistry conditions and temperature ranges for successful reproduction and growth.

04Threats

Threats

!

IUCN Red List: Critically Endangered

Sphaeroplea annulina faces severe threats from habitat degradation due to water pollution, eutrophication, and climate-induced changes to freshwater ecosystems. The species' specialized reproductive requirements and narrow ecological niche make it particularly vulnerable to environmental disturbances that alter water chemistry and temperature regimes.

Agricultural runoff contamination

HighOngoing

Climate change altering water temperature

HighOngoing

Habitat loss from wetland drainage

HighOngoing

Water pollution and eutrophication

HighOngoing

Urban development pressure

MediumOngoing
Community

Community Sightings

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07Sources

Sources & Attribution

How to Cite

IUCN: IUCN (2025). The IUCN Red List of Threatened Species. Version 2025-1. Available at: https://www.iucnredlist.org. doi:10.2305/IUCN.UK.2025-1.RLTS

GBIF: GBIF.org (2025). GBIF Home Page. Available at: https://www.gbif.org

This page: SpeciesRadar (2025). Sphaeroplea annulina (Sphaeroplea annulina). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/rdsporetrad

Full citation guide & data usage terms