Forest disturbances mapped primarily by the annual provincial aerial overview survey are recorded as polygons. Each polygon is labelled by the year of survey, forest health factor (disturbance agent), severity class and host. Aerial survey data standards are provided on the web at https://www2.gov.bc.ca/gov/content/industry/forestry/managing-our-forest-resources/forest-health/aerial-overview-surveys/methods.

Forest disturbances mapped primarily by the annual provincial aerial overview survey are recorded as polygons or spots (point data). This data set represents the spot (point) data. Each spot is labelled by the year of survey, forest health factor (disturbance agent), severity class, area, numbers of trees estimated in the spot, and host. Aerial survey data standards are provided on the web at https://www2.gov.bc.ca/gov/content/industry/forestry/managing-our-forest-resources/forest-health/aerial-overview-surveys/methods.

The Ontario Forest Biomonitoring Network (OFBN) monitors the health of mixed hardwood forests across southern and central Ontario. The data set includes: * Individual Tree Data: Decline Index and other measurements of visual stress symptoms of each tree within 111 plots * Decline Index: The Decline Index is a weighted average of tree stress symptoms (percent dead branches, percent slight or strong chlorosis (pale green-yellow leaves) and percent undersized leaves). Averaged for hardwood trees found within each of the 111 plots in each year. * Invasive Plant Species Presence Data * Salamander Data: numbers of individuals of salamander and other animal species in 14 plots * Tree Regeneration Data: monitors numbers of tree seedlings/saplings in 102 plots * Woody Debris Data: amount of woody debris on ground in 102 plots