Biofuel crops are grown using monoculture farming methods, which may reduce biodiversity. This often involves the destruction of natural ecosystems and the replacement with monoculture plantations. Nassau was the first to replace sugar production monoculture with an economic polyculture. This resulted in sugarcane monoculture, which often resulted in severe famines. Agricultural monoculture can entail social and economic risks. Slash and burn agriculture and monoculture also contribute to deforestation. Sheep, however, graze well in monoculture pastures where most goats fare poorly. The sugar monoculture and slave-worked plantation society spread across Jamaica throughout the eighteenth century. He recommended crop rotation and additions to restore soils exhausted from tobacco monoculture. Sawgrass may dominate sloughs, creating a monoculture. Such cultural globalization may lead to a human monoculture. Commercialism is portrayed as a monoculture that assimilates originality. Examples of monoculture include lawns and most fields of wheat or corn. In the region of Ilsenburg spruce monoculture occurs even down to . However, modern Australian identity draws on a variety of cultural heritages beyond the previous monoculture.