The primary impact of climate variability on species migration is the alteration of habitat suitability and food availability. As temperatures shift and precipitation patterns change, many species are forced to migrate to find suitable habitats that meet their survival needs. These changes can lead to shifts in biodiversity, with some species thriving in new areas while others struggle or face extinction. Additionally, the timing of migrations may be disrupted, resulting in mismatches between species and their food sources, affecting ecosystem dynamics and stability.