This special issue of the Journal of Sustainable Forestry is one of several outcomes of the First World Congress in Agroforestry that took place in Orlando, Florida, USA, 27 June to 02 July, 2004. Several sessions and symposia dealt with environmental services of agroforestry systems. Agroforestry can also have an indirect effect on carbon sequestration and on biodiversity when it helps decrease pressure on natural forests, which are the largest sink of ...