Forest diseases are illnesses that affect trees and other plants in forest ecosystems. These diseases can be caused by various factors, including fungi, bacteria, viruses, and environmental stressors. Common symptoms include leaf discoloration, wilting, and premature leaf drop, which can weaken trees and make them more susceptible to pests. Managing forest diseases is crucial for maintaining healthy ecosystems. Forest managers often monitor tree health and implement strategies like selective logging or the use of resistant tree species. Understanding the impact of diseases on forests helps protect biodiversity and supports the overall health of the environment.