Tim's research is focused on regenerating tropical dry forests in Central America. As the forces of globalization and urbanization have combined to trigger the abandonment of agricultural lands throughout much of the Mesoamerican Biodiversity Hotspot, forest restoration offers a potential opportunity to pursue combined biodiversity and climate mitigation goals. However, thus far it is poorly understood how different environmental and historical drivers may modulate success in achieving these goals. Tim's work focuses on how three factors--legacy pasture vegetation, soil quality, and landscape composition--influence the recovery of forest structure and community composition in young dry forest in the world's largest tropical forest restoration site, el Área de Conservación Guanacaste, Costa Rica. In addition, Tim is investigating how nutrient rich agricultural waste products can be used to ameliorate the negative impacts of low soil quality on dry forest recovery.