Comparison of forestry-based remote sensing methodologies to evaluate woodland caribou habitat in non-forested areas of Newfoundland

Forest inventory maps and a manual interpretation of forestry-enhanced Land sat imagery are compared to the results of a detailed aerial photograph int erpretation used to map habitat for caribou (Rangifer tarandus terra novae) in a relatively unforested region of Newfoundland. This comparison serves as an illustration of the pitfalls inherent in using readily available remo te sensing technologies in applications for which they were not intended. T he non-forest classes in the Newfoundland Forest Inventory are too broad to describe single vegetation communities, and only rarely are vegetation com munities found entirely within a single forest inventory class. For example , "bog" is relatively well associated with wetland vegetation classes and " barren" with upland classes, but "scrub" is a misleading term used to descr ibe both forest and non-forest communities. An earlier (global) forest clas sification for Newfoundland has a more reliable association of scrub with f orest. but a less reliable identification of bog than later updates to the forest inventory in the study area. Landsat imagery applications for forest inventory updates do not appear useful in identifying non-forest vegetatio n communities. Caution should be taken in using forest inventory maps in wi ldlife habitat applications when the habitat includes important non-forest components.