Simply put, there are three basic categories of tree species: native, non-native and invasive. Knowing where tree species fall into these categories may seem like trivial information, but species ...

E376,Causal Agent Beech leaf disease (BLD) is caused by an invasive nematode Litylenchus crenatae subsp. mccannii (Lcm; Figure 1). Nematodes are microscopic roundworms. Most nematodes are free-living, ...