CR

Marathrum cubanum

Unknown

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

Marathrum cubanum faces severe threats from habitat degradation due to water pollution and sedimentation in Cuban rivers and streams. Dam construction and water diversions have altered natural flow regimes essential for this aquatic plant's survival. Agricultural runoff containing fertilizers and pesticides has degraded water quality in many of its remaining habitats, while urban development continues to encroach upon riparian zones.

Threat summary

Habitat

Marathrum cubanum is endemic to fast-flowing freshwater streams and rivers in Cuba, typically found attached to rocks in areas with strong currents. This aquatic plant requires clean, well-oxygenated water with specific flow conditions to maintain its specialized morphology and reproductive cycle.

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Frequently asked questions

Why is Marathrum cubanum classified as Critically Endangered?
Marathrum cubanum is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. Marathrum cubanum faces severe threats from habitat degradation due to water pollution and sedimentation in Cuban rivers and streams. Dam construction and water diversions have altered natural flow regimes essential for this aquatic plant's survival. Agricultural runoff containing fertilizers and pesticides has degraded water quality in many of its remaining habitats, while urban development continues to encroach upon riparian zones.
Where does Marathrum cubanum live?
Marathrum cubanum occurs in Brazil, Cuba, and Jamaica. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Marathrum cubanum?
The main threats to Marathrum cubanum 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.

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