Alabama Well Amphipod
Stygobromus smithi
Stygobromus smithi, the Alabama well amphipod, is a phreatobite species of crustacean in family Crangonyctidae. It is endemic to Alabama in the United States.
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Countries
Taxonomy & Classification
Kingdom
Animalia
Phylum
Arthropoda
Class
Malacostraca
Order
Amphipoda
Family
Crangonyctidae
Genus
Stygobromus
Alabama Well Amphipod belongs to the family Crangonyctidae, order Amphipoda, within the Malacostraca class.
Species Profile
Stygobromus smithi, the Alabama well amphipod, is a phreatobite species of crustacean in family Crangonyctidae. It is endemic to Alabama in the United States.
The Alabama Well Amphipod faces significant threats from groundwater contamination and habitat degradation due to agricultural runoff, urban development, and industrial activities in its limited range. As a cave-dwelling species with extremely restricted distribution, it is particularly vulnerable to water quality changes and hydrological alterations that can rapidly impact its specialized subterranean ecosystem.
Key Facts
Habitat & Distribution
This species inhabits groundwater systems and subterranean aquatic environments, particularly cave streams and underground water bodies in limestone karst formations. It is endemic to specific groundwater habitats in Alabama where it depends on clean, well-oxygenated underground waters.
Threats
Extremely limited geographic range
Groundwater contamination from agricultural chemicals
Urban development and surface water pollution
Hydrological alterations affecting groundwater flow
Industrial pollution and chemical runoff
Found in 1 Country
Community Sightings
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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). Alabama Well Amphipod (Stygobromus smithi). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/alabama-well-amphipod