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The alpine treeline ecotone (ATE) is an area of transition high on mountains where closed canopy forests from lower elevations give way to the open alpine tundra and rocky expanses above. Alpine tundra is an island biome and its ecotone with forest is subject to change, and like oceanic islands, alpine tundra is subject to invasion - or the upward advance of treeline. The invasion of tundra by trees will have consequences for the tundra biome as invasion does for other island flora and fauna. To examine the invasibility of tundra we take a plant's-eye-view, wherein the local conditions become
Timberline --- Forest ecology. --- Forest ecosystems --- Forests and forestry --- Ecology --- Alpine timberline --- Alpine treeline --- Latitudinal timberline --- Latitudinal treeline --- Timber-line --- Tree line --- Treeline --- Forest ecology --- Mountain ecology --- Vegetation boundaries --- Glacier National Park (Mont.) --- Glacier National Park (USA) --- Environmental conditions. --- Climatic changes --- Montana --- Glacier National Park --- Geomorphology --- Environmental conditions --- Glacier Park (Mont.) --- Waterton-Glacier International Peace Park (Mont. and Alta.)
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Mountain Timberlines is published as part of the broad area of research on the changing global climate and its impact on the environment. The upper timberline is the most conspicuous vegetation limit in high-mountain areas of all continents and islands, except for the Antarctic. The dynamics of timberline establishment and maintenance is being affected by global warming in a number of ways. From a global view point, the present timberline is far from being caused only by the current climate, but instead reflects also history of climate, human impact and local site conditions. It is the objective of the book to highlight the physiognomic and ecological variety of mountain timberlines as well as their regionally and locally varying heterogeneity and temporal dynamics thus giving a complex view of the global timberline pattern. After an introduction into the complexities of the subject, the history and present state of timberline research are outlined. Chapters on the tree species at timberline and on the relationship of timberline elevation to marcroclimate, climate character and the mass-elevation effect follow. The main chapter deals with the physiognomic and ecological differentiation of altitudinal timberlines, in particular with the timberline controlling physical and biological factors, their interactions and their influence on the spatial structures and temporal dynamics in the timberline ecotone. Also, the feedbacks of trees and tree stands on the timberline environment are considered. This is the base for understanding the response of timberlines to climatically driven changes, which are considered in the last chapters.
Forest ecology. --- Plant ecology. --- Timberline. --- Timberline --- Forest ecology --- Mountain plants --- Mountain ecology --- Botany --- Earth & Environmental Sciences --- Ecology --- Plant Ecology --- Ecophysiology --- Forests and forestry --- Alpine timberline --- Alpine treeline --- Latitudinal timberline --- Latitudinal treeline --- Timber-line --- Tree line --- Treeline --- Life sciences. --- Physical geography. --- Ecology. --- Landscape ecology. --- Trees. --- Climate change. --- Life Sciences. --- Landscape Ecology. --- Climate Change. --- Physical Geography. --- Tree Biology. --- Changes, Climatic --- Climate change --- Climate changes --- Climate variations --- Climatic change --- Climatic changes --- Climatic fluctuations --- Climatic variations --- Global climate changes --- Global climatic changes --- Climatology --- Climate change mitigation --- Teleconnections (Climatology) --- Dendrology --- Nursery stock --- Woody plants --- Arboriculture --- Timber --- Balance of nature --- Biology --- Bionomics --- Ecological processes --- Ecological science --- Ecological sciences --- Environment --- Environmental biology --- Oecology --- Environmental sciences --- Population biology --- Geography --- Biosciences --- Sciences, Life --- Science --- Environmental aspects --- Vegetation boundaries --- Climatic changes. --- Changes in climate --- Climate change science --- Ecology . --- Global environmental change
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