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Why can red-eared sliders occur at high population densities in some habitats?

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Illustrations of ten representative chelonians, including spiny softshell turtle, Galapagos giant tortoise, green turtle, alligator snapping turtle, Blanding's turtle, common map turtle, eastern box turtle, eastern painted turtle, spotted turtle, and eastern mud turtle, each labeled with its common and scientific name. A scale bar at the bottom shows size comparison. — turtle Turtles (order Testudines).

Red-eared sliders (Trachemys scripta) are omnivorous turtles that consume a diverse diet consisting of both vegetation and small aquatic animals. This dietary flexibility allows them to thrive in various environments and reach surprisingly high population densities, sometimes attaining up to 300 individuals per hectare (120 per acre).12

While many turtle species are restricted by specific habitat requirements or are vulnerable to population declines due to human activity, the red-eared slider's ability to utilize a wide range of food sources contributes to its success in maintaining large numbers in suitable habitats.12