VU

Stygobromus subtilis

Unknown

Overview

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

Stygobromus subtilis faces severe threats from groundwater contamination and aquifer depletion due to agricultural runoff and urban development in its limited range. The species' obligate dependence on pristine groundwater systems makes it extremely vulnerable to pollution from pesticides, fertilizers, and industrial chemicals that can persist in aquifers for decades. Water table lowering from excessive pumping for irrigation and municipal use directly destroys its habitat by drying up the cave streams and springs where it lives.

Threat summary

Habitat

This obligate groundwater amphipod inhabits cave streams, springs, and interstitial waters in karst limestone formations. It requires pristine, oxygen-rich groundwater with stable temperatures and minimal chemical contamination.

FRESHWATER· major

Other threatened species in CRANGONYCTIDAE

VU

Stygobromus cooperi

Unknown
VU

Stygobromus parvus

Unknown
VU

Stygobromus putealis

Unknown
Stygobromus araeusVU

Stygobromus araeus

Unknown

Threatened in United States

VU

Lepiota echinella

Unknown
VU

Paddlefish

Polyodon spathula

Unknown
VU

Copper Shark

Carcharhinus brachyurus

Declining
EN

Lyophyllum deliberatum

Unknown

Frequently asked questions

Why is Stygobromus subtilis classified as Vulnerable?
Stygobromus subtilis is classified as Vulnerable because the population is declining and the species faces a high risk of extinction in the medium-term future if current pressures continue. Stygobromus subtilis faces severe threats from groundwater contamination and aquifer depletion due to agricultural runoff and urban development in its limited range. The species' obligate dependence on pristine groundwater systems makes it extremely vulnerable to pollution from pesticides, fertilizers, and industrial chemicals that can persist in aquifers for decades. Water table lowering from excessive pumping for irrigation and municipal use directly destroys its habitat by drying up the cave streams and springs where it lives.
Where does Stygobromus subtilis live?
Stygobromus subtilis occurs in United States. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Stygobromus subtilis?
The main threats to Stygobromus subtilis 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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