Contrasting climate change responses: habitat contraction vs. altitudinal shift in Chinese Micaria spiders
摘要
Climate change has become a major driver of biodiversity shifts, profoundly altering species distributions and ecosystem dynamics. Spiders of the genus Micaria, particularly Micaria rossica and Micaria lenzi, are representative ant-mimicking predators in China, with distinct ecological adaptations and distributions across the country’s complex topography. In this study, we used the MaxEnt model to simulate and analyze the potential distribution patterns of these two species under past, present, and future climate scenarios. Our results indicate that climate change significantly influences the extent and location of suitable habitats, with both species showing a general contraction of suitable areas under future warming conditions. While M. rossica exhibits strong environmental adaptability with minimal migration, M. lenzi responds to climate change by shifting its range toward higher altitudes in western regions. These divergent responses highlight differences in ecological niche requirements and adaptive strategies. The findings provide important insights into the niche differentiation, migration patterns, and future survival risks of Micaria species. This study underscores the value of species distribution modeling in biodiversity conservation and offers scientific guidance for planning protected areas and mitigating climate-induced biodiversity loss.
Implications for insect conservationThis study highlights the impact of climate change on the spatial distribution patterns of Micaria rossica and Micaria lenzi, underscoring the urgent need to address global warming and prioritize biodiversity conservation.