What contrast is highlighted by the walleye situation in Texas regarding general climate and Lake Meredith?

The general climate restricts walleye survival, while Lake Meredith's specific, cooler environment supports them.

The walleye population in Texas serves as a prime illustration of how localized thermal profiles critically influence species distribution. While walleye are native across central North America, the typical high summer water temperatures prevalent across much of the southern United States restrict their sustained growth and survival in those regions. Lake Meredith is noteworthy precisely because its specific, cooler thermal environment overrides this general climatic restriction, allowing the species to thrive, spawn, and maintain a population, in direct contrast to the restrictive conditions found elsewhere in the state.