Fig 1.
Omnidirectional connectivity mosaic of forested Canada at a resolution of 25 meters per pixel.
Fig 2.
Sample areas from the Canada-wide current density mosaic.
(a) Exemplar 2 of the Boreal Shield East ecozone (square green outline) and surrounding area. (b) Exemplar 2 of the Montane Cordillera ecozone and surrounding area. (c) Exemplar 2 from the Taiga Shield West ecozone and surrounding area. (d) Exemplar 2 of the Hudson Plains ecozone and surrounding area. Insets show the resistance maps for each of the areas surrounding and including the exemplars: forest in green and nonforest in yellow.
Fig 3.
Processing and feature detection of a tile in the omnidirectional connectivity mosaic.
(a) the original EOSD data for Exemplar 2 of the Boreal Shield East ecozone. (b) the resistance map where green is forest and tan is non-forest. (c) the omnidirectional current density map; (d) features detected by SURF, highlighted with red circles and sized to the feature’s size as identified by SURF.
Fig 4.
Measures of connectivity across Canada.
(a) map of omnidirectional resistance distance for all tiles with non-zero forest cover; (b) complexity map of Canada for all tiles with non-zero forest cover. Black outlines show the Canadian ecozone boundaries.
Fig 5.
Forest connectivity exemplars for 12 Canadian ecozones, identified by resistance distance and number of identified features.
Fig 6.
Resistance distance and SURF feature count for tiles in omnidirectional connectivity mosaic (625 km2 each).
Fig 7.
Forest connectivity regions of Canada and their characteristics.
(a) Canadian forest connectivity regions; (b) resistance distance and structural complexity data for all tiles of each forest connectivity region. Abbreviations of forest connectivity regions: HC = Highly Connected; CLO = Connected with Large Obstacles; LOM = Limited Omnidirectional Movement; RCM = Restricted Corridor Movement; HR = High Resistance; MC = Minimal Connectivity.
Fig 8.
Exemplars of forest connectivity regions, with similar landscapes.
The left column shows the Exemplar tile for each forest connectivity region of Canada. The right columns show the five tiles that are the most similar in resistance distance and complexity to each of the forest connectivity region Exemplars. Abbreviations of forest connectivity regions: HC = Highly Connected; CLO = Connected with Large Obstacles; LOM = Limited Omnidirectional Movement; RCM = Restricted Corridor Movement; HR = High Resistance; MC = Minimal Connectivity.