DWD 13-19cm

Habitat associations in northern Alberta

Habitats, North

Models were used to show how habitat elements' relative abundance differed among vegetation and human footprint types in the Boreal and Foothills regions of Alberta (see methods and manual). Models were only created for habitat elements that had at least 20 detections using data from ABMI. Predicted habitat elements abundance in each habitat type is shown with bars. Vertical lines indicate 90% confidence intervals. Dots within the forested habitat types show predicted habitat elements abundance in cutblocks of various ages.

Linear footprint relationships in northern Alberta

Linear footprint relationship, North

For linear footprint in northern Alberta. The pairs of points show the change in relative abundance expected between the average habitat with no linear footprint (left point) and average habitat when 10% linear footprint is present (right point) (see methods and manual).

Predicted relative abundance throughout Alberta under reference conditions

Map, reference

Habitat association models, plus models describing how habitat elements varied spatially and with climate gradients were used to predict habitat elements abundance in 1 km2 spatial units under reference conditions (see methods and manual). Predictions of relative abundance of the habitat elements in each 1 km2 unit were made after all human footprint in the 1 km2 unit had been 'backfilled' based on native vegetation in the surrounding area. Pixels depicted in red are predicted to have the highest abundance for the habitat elements, grading through light tan to dark blue where the habitat elements is predicted to be less abundant or absent. This figure has uncertainty due to uncertainty in the models and in the underlying vegetation map.

Predicted relative abundance throughout Alberta under current conditions

Map

Habitat association models, plus models describing how habitat elements varied spatially and with climate gradients were used to predict habitat elements abundance in 1 km2 spatial units under current conditions (see methods and manual). Predictions of relative abundance of the habitat elements in each 1 km2 unit were made based on the vegetation and human footprint present in the 1 km2 unit in 2012. Pixels depicted in red are predicted to have the highest abundance for the habitat elements, grading through light tan to dark blue where the habitat elements is predicted to be less abundant or absent. This figure has uncertainty due to uncertainty in the models and in the underlying vegetation map (see uncertainty map below).

Difference in relative abundance between current and reference conditions

Map

For each 1 km2 unit the difference between predicted current and reference conditions was determined (see methods and manual). In 1 km2 units depicted in green the habitat elements was predicted to have higher abundance under present conditions than under reference conditions, with the opposite true for 1 km2 units depicted in pink. The intensity of green and pink depict the relative magnitude of increase or decrease for the habitat elements between reference and current conditions. This figure has uncertainty due to uncertainty in the models and in the underlying vegetation map.

Data sources

Information from Alberta Biodiversity Monitoring Institute (ABMI) plots was used to conduct the modeling described in this website.

Recommended citation

ABMI (2018). DWD 13-19cm. ABMI Species Website, version . URL: http://species.abmi.ca/pages/species/habitatelements/DWD13_19.html.