CR

Hydrostachys monoicus

Unknown

Overview

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

Hydrostachys monoicus faces severe threats from dam construction and water diversion projects that alter the natural flow regimes of its riverine habitat. Agricultural expansion and urban development in watersheds increase sedimentation and pollution levels, degrading the clear, fast-flowing waters this aquatic plant requires. Climate change poses additional risks through altered precipitation patterns that could disrupt the seasonal flooding cycles essential for the species' reproductive success.

Threat summary

Habitat

This aquatic plant is endemic to fast-flowing rivers and streams with rocky substrates in tropical Africa. It requires clear, well-oxygenated water with specific flow conditions and typically grows attached to rocks in rapids and waterfalls.

Other threatened species in Hydrostachyaceae

VU

Hydrostachys maximus

Unknown

Threatened in Madagascar

VU

Lepiota echinella

Unknown
EN

Montipora calcarea

Declining
CR

Malagasy Giant Jumping Rat

Hypogeomys antimena

Declining
Nasolo's Shrew TenrecVU

Nasolo's Shrew Tenrec

Microgale nasoloi

Declining

Frequently asked questions

Why is Hydrostachys monoicus classified as Critically Endangered?
Hydrostachys monoicus 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. Hydrostachys monoicus faces severe threats from dam construction and water diversion projects that alter the natural flow regimes of its riverine habitat. Agricultural expansion and urban development in watersheds increase sedimentation and pollution levels, degrading the clear, fast-flowing waters this aquatic plant requires. Climate change poses additional risks through altered precipitation patterns that could disrupt the seasonal flooding cycles essential for the species' reproductive success.
Where does Hydrostachys monoicus live?
Hydrostachys monoicus occurs in Madagascar. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Hydrostachys monoicus?
The main threats to Hydrostachys monoicus 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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