Every year, since 1967, the Ministère des Forêts, de la Faune et des Parcs (MFFP) has been conducting an aerial survey of damage caused by the main insects and diseases that attack trees. This fact sheet focuses exclusively on data concerning damage caused by hemlock looper. The data is updated annually only in case damage is observed. The aerial survey is carried out in sectors previously determined according to the damage of the previous year, the results of inventories to predict the populations of this insect and the observations reported in the forest.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**

Every year, since 1967, the Ministère des Forêts, de la Faune et des Parcs (MFFP) has been conducting an aerial survey of damage caused by the main insects and diseases that attack trees. This fact sheet focuses exclusively on data on damage caused by spruce budworm (TBE). The aerial survey is carried out in sectors previously determined according to the damage of the previous year and the results of inventories to predict the populations of this insect. From 2013 to 2022, the DPF acquired aerial survey videos to obtain additional observer data. Since 2023, high-resolution geotagged images have replaced videos.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**

Every year, since 1967, the Ministry of Natural Resources and Forests (MRNF) has been conducting an aerial survey and since 2024, with the acquisition of satellite imagery, the Ministry has detected some damage caused by the main insects and diseases that attack trees. This fact sheet focuses exclusively on data concerning damage caused by forest livery. The data is updated annually only in case damage is observed.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**

Every year, since 1967, the Ministère des Forêts, de la Faune et des Parcs (MFFP) has been conducting an aerial survey of damage caused by the main insects and diseases that attack trees. This fact sheet focuses exclusively on data on damage caused by jack pine budworm. The data is updated annually only in case damage is observed. The aerial survey is carried out in sectors previously determined according to the damage of the previous year and the results of inventories to predict the populations of this insect.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**

Deposit is the layer of loose material that covers rock. It may have been established during the retreat of the glacier at the end of the last glaciation or by other processes associated with erosion and sedimentation. The nature of the loose deposit is evaluated based on the shape of the land, its position on the slope, the texture of the soil, or other indicators. Surface deposit maps make it possible to distinguish the main categories of surface deposits, to know their nature, thickness and distribution on Quebec territory. The map of surface deposits in the North is a component of an extensive inventory carried out to meet knowledge acquisition needs as part of the economic, social and environmental development project “Plan Nord”. This inventory was carried out between 2010 and 2013. The mapping of surface deposits was carried out using a new approach based on remote sensing techniques. The interpretation was carried out by geomorphologists using RapidEye anaglyph (3D) satellite images with high spatial resolution (5 m). Ground and air control points allowed the validation of the interpreted information. Mapping is available throughout the country north of the 53rd parallel, which represents an area of approximately 680,000 km2. The minimum mapping area is 100 ha.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**

The bank of oblique photographs of Northern Quebec is composed of georeferenced photos taken on board planes or helicopters during flights carried out as part of the program for the acquisition of ecological knowledge in Northern Quebec as part of the economic, social and environmental development project “Plan Nord”. During these overflights, the personnel on board were equipped with high-resolution cameras connected to a satellite geolocation system (GPS). The photos obtained in this way served as control points to improve the various thematic maps. __Note:__ For the purposes of distributing this bank, the photos could be modified slightly in order to improve the shooting. Georeferencing photos on the map refers to the location of the plane or helicopter at the time the shot was taken.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**

__The link: *Access the data directory* is available in the section*Dataset Description Sheets; Additional Information*__. The mapping of insect epidemics, windfalls (trees knocked down by the wind) and ice is produced as part of the ecoforestry inventory of southern Quebec in order to maintain an up-to-date portrait of the forest. It covers the commercial territory of public and private forests in Quebec. The minimum mapping area is 0.1 ha. This portrait is useful, among other things, for evaluating the intensity and extent of damage associated with insects, windfalls and ice. In each case, the mapping represents the loss of forest cover in the form of disturbances ranging from severe (over 75% of dead trees) to slight disturbances (from 25 to 75% of dead trees). The disturbances in this map date back to the beginning of the century (when information is available) to the present day. They are the result of collaboration between the Directorate of Forest Protection and the Directorate of Forest Inventories. The outlines come from forest inventories (first and second decennial inventories) and ecoforestry inventories (third and fourth decennial inventories). Mortality is dated using defoliation layers from the Directorate for Forest Protection. For the epidemic of TBE (spruce budworm), mortality is considered to occur after a succession of five years or more of severe or moderate defoliation. In the case of the surveyor, a single year is enough to decimate a forest stand. The other elements in the layer are dated using LANDSAT imagery, sample plots, and archival documents.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**