Selects: Plant Migration

Plants are sessile organisms, yet they migrate across landscapes over generations through seed and spore dispersal. While gravity and wind facilitate movement, rapid shifts in Earth’s climate—now occurring at an unprecedented pace—force flora to relocate northward or to higher elevations to survive. This phenomenon, historically documented through fossil pollen records, reveals that plants often move faster than expected, a discrepancy known as Reid's Paradox, likely driven by animal-assisted dispersal and extreme weather events. Current industrial-era warming threatens to outpace this natural migration, potentially trapping species in inhospitable soil or narrow mountain bands. Consequently, ecologists are debating "assisted migration," a controversial strategy involving human intervention to transplant species into new, climate-resilient ranges to prevent extinction, despite the inherent risks of creating invasive species or disrupting existing ecosystems.