Actinemys marmorata
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.
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.
