EN

Zostera angustifolia

Unknown

Overview

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

Smalt ålgräs faces severe decline primarily due to coastal development and water quality degradation in shallow marine environments. Eutrophication from agricultural runoff and urban pollution creates algal blooms that block sunlight essential for photosynthesis, while physical disturbance from boat anchoring and dredging directly destroys seagrass beds. Climate change compounds these pressures through rising sea temperatures and altered salinity levels that stress this temperature-sensitive species.

Threat summary

Habitat

Smalt ålgräs inhabits shallow coastal waters, estuaries, and protected bays with sandy or muddy substrates at depths typically ranging from 0.5 to 4 meters. This seagrass species requires clear water with adequate light penetration and prefers areas with moderate water movement and stable salinity levels.

Frequently asked questions

Why is Zostera angustifolia classified as Endangered?
Zostera angustifolia 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. Smalt ålgräs faces severe decline primarily due to coastal development and water quality degradation in shallow marine environments. Eutrophication from agricultural runoff and urban pollution creates algal blooms that block sunlight essential for photosynthesis, while physical disturbance from boat anchoring and dredging directly destroys seagrass beds. Climate change compounds these pressures through rising sea temperatures and altered salinity levels that stress this temperature-sensitive species.
Where does Zostera angustifolia live?
Zostera angustifolia 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 Zostera angustifolia?
The main threats to Zostera angustifolia 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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