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The Changing Alpine Treeline
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 extremely important. Among these local conditions, we find geomorphology to be exceptionally impor...
Climate Variability and Change in High Elevation Regions: Past, Present & Future
Glaciers in the Andes are particularly important natural archives of present and past climatic and environmental changes, in significant part because of the N-S trend of this topographic barrier and its influence on the atmospheric circulation of the southern hemisphere. Strong gradients in the seasonality and amount of precipitation exist between the equator and 30° S. Large differences in amount east and west of the Andean divide also occur, as well as a change from tropical summer precipitation (additionally modified by the seasonal shift of the circulation belts) to winter precipitation in the west wind belt (e. g. , Yuille, 1999; Garraud and Aceituno, 2001). The so-called 'dry axis' li...
Before They're Gone
A lifelong backpacker, Michael Lanza knows our national parks like the back of his hand. As a father of two, he hopes to share these special places with his kids. But he has seen firsthand the changes wrought by global warming and understands what lies ahead: melting glaciers, disappearing species, and inundated coastlines. To Lanza, it feels like the house he grew up in is being looted. Painfully aware of the ecological--and spiritual--calamity that global warming will bring to our nation's parks, Lanza is determined to show his children these wonders before they have changed forever. He takes his nine-year-old son, Nate, and seven-year-old daughter, Alex, on an ambitious journey to see as ...
Ecological Consequences of Climate Change
Contemporary climate change is a crucial management challenge for wildlife scientists, conservation biologists, and ecologists of the 21st century. Climate fingerprints are being detected and documented in the responses of hundreds of wildlife species and numerous ecosystems around the world. To mitigate and accommodate the influences of climate ch
Mountain Area Research and Management
This book brings together scientists and practitioners from five continents to present their experience in undertaking activities that contribute to our understanding and informed management of mountain areas. In particular, they address the challenges of working in interdisciplinary teams and of effectively involving stakeholders. The result is a powerful book that integrates research from different disciplines in the natural and social sciences, and in some cases indigenous knowledge, to address the question of how knowledge is gained about mountain areas and how can it be integrated and used in effective management. A comprehensive introduction covers the challenges in mountain area resea...
