Post-glacial Vegetation of Canada
Post-glacial Vegetation of Canada brings together all the available information about the complex history of vegetational and environmental change in Canada since the last Ice Age. As the lands began to emerge from under the ice, they provided a large, varied setting for the re-establishment of highly diverse plant cover ranging from the modern tropical rain forests to the arctic tundra. Professor Ritchie discusses the roles of climactic change, wildfires, diseases, and biological factors in controlling the emerging patterns of new plant growth. The initial chapters present a balanced review of the modern bioclimates and vegetation of Canada as an introduction to the historical record. A review of the present pollen registration and the autecology of the important plant taxa is provided by examining the fossil record, derived primarily from pollen evidence. Students and researchers in the natural history of Canada and the Northern regions will find Post-glacial Vegetation of Canada a source of much information. It will also appeal to those with interests in botany, geography, geology, archaeology, and paleoecology.
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Abies abundant adjacent Alnus crispa arctic Artemisia assemblage Barnosky beech Betula papyrifera bioclimates birch Birks boreal forest Canada changes climate diagrams coastal conifer contorta Cordilleran Cwynar Cyperaceae Davis deciduous deglaciation Delcourt detailed dominated Douglas-fir early Holocene eastern Canada Fagus forest-tundra fossil record Fraxinus nigra full-glacial glacial Gramineae grassland hemlock zone herb tundra Holocene ice-free increases interior interpretation investigations Juniperus Lake landscape Larix late-glacial Laurentide Ice lowlands macrofossil records macrofossils mesic sites Mott Mountains northern limit northwest occurred Ontario Oxyria Pacific pattern percent Picea glauca Picea mariana pine Pinus banksiana Pinus strobus plant pollen and macrofossil pollen diagrams pollen record pollen spectra Pond Populus Pseudotsuga Quebec Quercus radiocarbon dates range reconstruction region Richard Ritchie roughly Salix sediments sequence shrub tundra soils southern species taxa temperatures Thuja Thuja plicata tion treeless treeline trees Tsuga tundra Ulmus upland western hemlock white spruce yr BP