Landscape modifications significantly affect habitat connectivity by fragmenting ecosystems, which can hinder the movement of species between different patches of habitat. This disruption can lead to reduced genetic diversity and inbreeding in isolated populations, affecting overall species survival. Moreover, fragmented landscapes can create barriers to essential migration routes for animals, limiting access to resources and suitable habitats. This alteration can compromise the resilience of ecosystems, making them more vulnerable to environmental changes and increasing the risk of species extinction.