Description: The term ‘xerothermic’ refers to environments characterized by dry and warm conditions, where water availability is limited and temperatures are usually high. These ecosystems are typical of arid and semi-arid regions, where vegetation and fauna have developed specific adaptations to survive under water-stress conditions. The main characteristics of xerothermic environments include low relative humidity, scarce precipitation, and soils that are often nutrient-poor. Vegetation in these environments tends to be xerophytic, meaning plants that have evolved to conserve water, such as cacti and some shrub species. The importance of xerothermic ecosystems lies in their unique biodiversity and their crucial role in ecological balance, as they host species not found in other habitats. Furthermore, these environments are sensitive to climate change and human activity, making them a focus of study in the fields of environmental science and ecology, especially in the context of sustainability and natural resource conservation.