Everything you always wanted to know about gene flow in tropical landscapes (but were afraid to ask).

摘要: The bulk of the world’s biodiversity is found in tropical regions, which are increasingly threatened by human-led degradation natural habitats. Yet, little known about responses to habitat loss and fragmentation. Here we review all available literature assessing landscape effects on gene flow species, aiming help unravel factors underpinning functional connectivity tropics. We map classify studies focus molecular markers employed, statistical approaches assess flow, evaluated environmental variables. then compare qualitatively quantitatively across species units analysis. 69 articles organisms, most were published last five years, concentrated Americas, focused amphibians or mammals. Most employed population-level approaches, microsatellites preferred type markers, Mantel partial tests common used. While elevation, land cover forest predictors assessed, suitability was be a predictor flow. A third surveyed explicitly assessed effect degradation, but only 14 these detected reduced with increasing loss. Elevation responsible for significant microsatellite-based isolation resistance single study reported non-forested areas an ant. Our reveals important knowledge gaps provides useful guidelines how fill them.