hide You are viewing an archived web page collected at the request of University of Alberta using Archive-It. This page was captured on 16:25:48 Dec 08, 2010, and is part of the HCF Alberta Online Encyclopedia collection. The information on this web page may be out of date. See All versions of this archived page. Loading media information
Heritage Community Foundation Presents
Alberta Online Encyclopedia
Resource Inventory
History of Development
Innovation and New Technology Visit Alberta Source! Heritage Community Foundation
Heritage Trails presented courtesy of CKUA Radio Network Canada's Digital Collections

Home > Alberta's Resource Inventory > Forests > Agents of Change

Resource Inventory

Agents of Change

Burned Spruce ForestAgents of change in Alberta's forest ecosystems can originate from natural sources, as well as human activities. Some years, the overall area affected by forest fires, insects and disease is extensive. But these natural processes, active in virtually all of Alberta's forests, are natural agents of change for forest ecosystems. Forest size, shape, distribution pattern and mix of tree species are all affected over time by a combination of climate, landform, and the frequency of fire and other disturbances.

Timber harvesting can also disturb forest ecosystems. As with fire, the changes can be abrupt. Harvesting's potential effects include habitat alteration and fragmentation, a reduction in biological diversity, and soil compaction and erosion. Overall, timber harvesting, fire suppression, and related forest management activities affect the forest ecosystem. In some areas of the province, however, clearing for agriculture and petroleum exploration and development are more significant human disturbances than timber harvesting.

Department of the Environment. State of the Environment Report, Terrestrial Ecosystems. Edmonton: n.p., 2001. With permission from Alberta Environment.


Soil and AgricultureHydrocarbonsForests

Albertasource.ca | Contact Us | Partnerships
††††††††††† For more on natural resources in Alberta, visit Peelís Prairie Provinces.
Copyright © Heritage Community Foundation All Rights Reserved