… resulting from management. In temperate North America, Ryan is studying barriers to adoption of agroforestry, with a particular interest in growing a chestnut industry in the … resulting from management. In temperate North America, Ryan is studying barriers to adoption of agroforestry, with a particular interest in growing a chestnut industry in the … resulting from management. In temperate North America, Ryan is studying barriers to adoption of agroforestry, with a particular interest in growing a chestnut industry in the …