Rapid deforestation in eastern Paraguay is changing the region's subtropical ecosystems, creating a fragmented landscape of forest remnants. Along the edges between the disappearing forests and new soy farms, species from both habitats collide in novel interactions. A study from DePaul University researcher Noé de la Sancha models new dimensions of biodiversity among small mammal populations, as a function of how far they dwell from the forest's edge. The research is published in the journal Diversity and Distributions.