What is the impact of habitat loss on species?

"Habitat loss poses the greatest threat to species. The world's forests, swamps, plains, lakes, and other habitats continue to disappear as they are harvested for human consumption and cleared to make way for agriculture, housing, roads, pipelines and the other hallmarks of industrial development. Without a strong plan to create terrestrial and marine protected areas important ecological habitats will continue to be lost"  wwf.panda.com

http://wwf.panda.org/about_our_earth/species/problems/habitat_loss_degradation/