VU

Physella zionis

Unknown

Overview

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

Physella zionis faces severe threats from water diversions and groundwater pumping that reduce spring flows in its limited desert habitat. The species is highly vulnerable to habitat modification from recreational activities and livestock grazing around spring sources. Climate change poses an additional long-term threat through increased aridity and reduced groundwater recharge in the southwestern United States.

Threat summary

Habitat

This freshwater snail is endemic to spring-fed pools and streams in desert regions of the southwestern United States. It requires permanent water sources with specific temperature and chemical conditions typical of desert springs.

Other threatened species in PHYSIDAE

VU

Wet-rock Physa

Physa zionis

Stable
VU

Physella spelunca

Unknown
VU

Physella utahensis

Unknown
Banff Springs PhysaCR

Banff Springs Physa

Physella johnsoni

Stable

Frequently asked questions

Why is Physella zionis classified as Vulnerable?
Physella zionis 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. Physella zionis faces severe threats from water diversions and groundwater pumping that reduce spring flows in its limited desert habitat. The species is highly vulnerable to habitat modification from recreational activities and livestock grazing around spring sources. Climate change poses an additional long-term threat through increased aridity and reduced groundwater recharge in the southwestern United States.
Where does Physella zionis live?
Physella zionis 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 Physella zionis?
The main threats to Physella zionis 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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