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The Bunchgrass zone is the warmer of the two biogeoclimatic zones in British Columbia which lack trees. It is most commonly found in deeply incised valleys east of the Coast Mountains and within their rain shadow. Drought, not cold as in the Alpine Tundra (AT), minimizes forest or woodland development.
Biogeoclimatic ecosystem classification (BEC) [1] [2] is an ecological classification framework used in British Columbia to define, describe, and map ecosystem-based units at various scales, from broad, ecologically-based climatic regions down to local ecosystems or sites.
The commission's 1997 report, Ecological Regions of North America, provides a framework that may be used by government agencies, non-governmental organizations, and academic researchers as a basis for risk analysis, resource management, and environmental study of the continent's ecosystems. [1]
In Canada, the domination of red cedar and hemlock has led to the classification of the inland rainforest areas as belonging to the Interior Cedar-Hemlock Biogeoclimatic zone (ICH). In the United States, the inland rainforest regions are also classified as significant habitat types for western redcedar and western hemlock.
The landforms of British Columbia include two major continental landforms, the Interior Plains in the province's northeast, the British Columbia portion of which is part of the Alberta Plateau. The rest of the province is part of the Western Cordillera of North America , often referred to in Canada as the Pacific Cordillera or Canadian Cordillera.
British Columbia is the most biodiverse province with 18 ecoregions across 4 biomes. By contrast, Prince Edward Island is the least biodiverse with just one ecoregion - the Gulf of St. Lawrence lowland forests - encompassing the entire province.
The geology of the northern Selkirks reveals the tremendous tectonic changes that have shaped the terrain of western North America. Like much of British Columbia, the region was first studied by the prolific surveyor and geologist Dr. George Mercer Dawson in 1890. Topographical maps were first produced by A.O. Wheeler in the early 1900s, and in ...
The Ecology of the North Cascades is heavily influenced by the high elevation and rain shadow effects of the mountain range. The North Cascades is a section of the Cascade Range from the South Fork of the Snoqualmie River in Washington, United States, to the confluence of the Thompson and Fraser Rivers in British Columbia, Canada, where the range is officially called the Cascade Mountains but ...