Forest health monitoring in Ontario is conducted as a partnership between the Ontario Ministry of Natural Resources (OMNR) and Natural Resources Canada-Canadian Forest Service (CFS). This federal-provincial collaboration began in the 1930s, and has been formalized under a series of memoranda of understanding.
Recording and reporting of forest health conditions in Ontario includes monitoring the occurrence of both native and invasive biotic (e.g., insect, disease), and abiotic (e.g., severe weather conditions) disturbances and events. The monitoring program consists of permanent sample plots, temporary sample plots, plantation surveys, and aerial mapping of major forest disturbances. All forest areas are included: provincial Crown land, federal lands, First Nations territories, parks, and private land and urban areas. Ad hoc sampling of insects and diseases is also done to maintain a database of their occurrence in the province.
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Forest Health Conditions in Ontario, 2009 (published date - June 6, 2011) (PDF, 2.6MB 116 pages)