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Eastern Clam Shrimp

Limnadia lenticularis

Unknown

Overview

The Eastern Clam Shrimp is a small freshwater crustacean measuring 5-18mm in length, characterized by its distinctive bivalved carapace that resembles a tiny clam shell. These translucent to brownish creatures are filter feeders that play important roles in temporary wetland ecosystems by consuming algae, bacteria, and organic detritus while serving as food for waterfowl and other aquatic predators.

The Eastern Clam Shrimp faces severe population declines primarily due to habitat loss and degradation of temporary freshwater pools and wetlands. Agricultural intensification, urban development, and altered hydrological regimes have eliminated or modified many of the ephemeral aquatic habitats this species depends on for reproduction and survival.

Threat summary

Habitat

Eastern Clam Shrimp inhabit temporary freshwater pools, seasonal wetlands, and ephemeral ponds that fill with rainwater or snowmelt and typically dry out within several months. They are particularly associated with shallow, vegetated pools in prairie potholes, woodland depressions, and agricultural areas where water remains for 2-6 months during spring and early summer.

FRESHWATER· major

Frequently asked questions

Why is Eastern Clam Shrimp classified as Endangered?
Eastern Clam Shrimp 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. The Eastern Clam Shrimp faces severe population declines primarily due to habitat loss and degradation of temporary freshwater pools and wetlands. Agricultural intensification, urban development, and altered hydrological regimes have eliminated or modified many of the ephemeral aquatic habitats this species depends on for reproduction and survival.
Where does Eastern Clam Shrimp live?
Eastern Clam Shrimp occurs in Åland Islands, Austria, Belgium, Czechia, Finland, and France (plus 9 other countries). Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Eastern Clam Shrimp?
The main threats to Eastern Clam Shrimp 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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