Alpine treeline, climate, and environmental changes. Special issue
Amérique du Nord ; Biogéographie ; Changement climatique ; Ecosystème ; Ecotone ; Glaciation ; Géologie ; Géomorphologie ; Limite supérieure de la forêt ; Montagne ; Pléistocène ; Rocky Mountains
Biogeography ; Climatic change ; Ecosystem ; Ecotone ; Geology ; Geomorphology ; Glaciation ; Mountain ; North America ; Pleistocene ; Rocky Mountains ; Tree line
. Current fine scale processes include solifluction and changes on relict solifluction and digging by animals. These processes should be examined in detail in future studies to facilitate a better undestanding of where individual tree seedlings become
established as a primary response of the ecotone to climate change.
Alpine treeline, climate, and environmental changes. Special issue
Amérique du Nord ; Biogéographie ; Changement climatique ; Climat ; Ecosystème ; Ecotone ; Forêt ; Limite supérieure de la forêt ; Montagne ; Toundra
Biogeography ; Climate ; Climatic change ; Ecosystem ; Ecotone ; Forest ; Mountain ; North America ; Tree line ; Tundra
The aim of this paper is to examine the processes that link treeline to local and regional controls, and so improve the expectations for their response to climate change. Although the mechanistic processes are fundamentally the same for all forest
-tundra ecotones across western North America, factors such as prior climate, underlying geology and geomorphology, and genetic constraints of dominant tree species lead to geographic differences in the responses of particular ecotones to climate change.
Frontier land use change : synthesis, challenges, and next steps
La méthode de Mill permet de synthétiser les résultats de sept études de cas sur le long terme (Amérique et Asie) concernant le changement de couverture végétale dans les régions frontalières. Modifications dans l'organisation spatiale de