VU

Actinemys marmorata

Unknown

Overview

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

The Western Pond Turtle faces severe population declines primarily due to habitat destruction from urban development and agricultural conversion throughout its California and Oregon range. Introduced predators, particularly bullfrogs and non-native fish, prey heavily on eggs and juveniles, while invasive red-eared sliders compete for basking sites and nesting areas. Water diversions and dam construction have altered natural flow regimes in many watersheds, reducing suitable aquatic habitat and disrupting breeding cycles.

Threat summary

Habitat

Western Pond Turtles inhabit slow-moving freshwater environments including ponds, marshes, streams, and irrigation ditches with muddy bottoms and abundant aquatic vegetation. They require adjacent terrestrial areas with suitable soil for nesting and basking sites such as logs, rocks, or emergent vegetation.

FRESHWATER· major

Other threatened species in EMYDIDAE

Trachemys terrapenVU

Trachemys terrapen

Unknown
EN

Spotted Turtle

Clemmys guttata

Declining
VU

Eastern Box Turtle

Terrapene carolina

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Bog TurtleCR

Bog Turtle

Glyptemys muhlenbergii

Unknown

Frequently asked questions

Why is Actinemys marmorata classified as Vulnerable?
Actinemys marmorata 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. The Western Pond Turtle faces severe population declines primarily due to habitat destruction from urban development and agricultural conversion throughout its California and Oregon range. Introduced predators, particularly bullfrogs and non-native fish, prey heavily on eggs and juveniles, while invasive red-eared sliders compete for basking sites and nesting areas. Water diversions and dam construction have altered natural flow regimes in many watersheds, reducing suitable aquatic habitat and disrupting breeding cycles.
Where does Actinemys marmorata live?
Actinemys marmorata 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 Actinemys marmorata?
The main threats to Actinemys marmorata 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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