This study used Maxent, a presence-only species distribution model (SDM), to map the potential probability distribution of the invasive forest pathogen oak wilt (Ceratocystis fagacearum) in eastern and southeastern Minnesota. The maps are an integration of various sources, reviewed by regional authorities. This fungus invades and colonizes the water conducting tissues of Oak trees. Over the years, and with variable frequency, it has been reported from the majority of the 88 Ohio counties. The ⦠the disease. To manage oak wilt Don't prune oaks from April through July to prevent spread by insects. 2 Hosts Oaks can be organized taxonomically into three . It affects oaks in a manner similar to how dutch elm disease affects elms. Oak wilt covers a large area in Minnesota and affects all species of oak trees. White oaks can also be affected but are more resistant and less vulnerable to mortality from the disease. Oak wilt is fatal for all the species in the red oak group; those oaks with pointy-tipped leaves. The model related oak wilt occurrence data Duong & M.J. Wingf. The current known distribution of oak wilt is shown in red in figure 1. States Counties Points List Species Info. Look for red oaks that suddenly drop their leaves in the summer. Map produced by the USDA Forest Service, Northeastern AreaâForest Health Monitoring GIS Group. They are intended to display the biological extent of major damage agents, or the range over which they have been a managerial concern. Oak wilt can be recognized by rapid wilting and loss of leaves beginning at the top of the tree. The white oak group is less vulnerable; those oaks with round-tipped leaves. Oak wilt is a serious and often deadly vascular disease of oaks. Oak wilt is an aggressive, tree-killing disease of oaks. Distribution Maps Species Information Tools & Training My EDDMapS About oak wilt Bretziella fagacearum (Bretz) Z.W. This species is Introduced in the United States. National Forest Damage Agent Range Maps. Don't move firewood from oak wilt infected areas. The fungus enters the water-conducting vessels of the sapwood through fresh wounds or through roots connecting healthy and diseased trees. First report of the oak wilt fungus, Ceratocystis fagacearum, in New York state. main groups based on leaf shape and other characteristics: red oaks, white oaks, and live The fungal pathogen, Bretziella fagacearum (formerly Ceratocystis fagacearum), is known to occur in North America, but its origin is currently unknown. Using oak wilt presence locations and a set of 11 environmental variables, the potential distribution of oak wilt was successfully modeled in east central and southeastern Minnesota with Maxent. Plant Disease, 93(4), 428. doi: 10.1094/PDIS-93-4-0428B Distribution References The pathogen is distributed throughout the Midwest and Texas. 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