AMBIO 2000 Vol.29 No.7

1. Research for Mountain Area Development: Climatic Fluctuations in the 　 Mountains of the Americas and Their Significance∥Roger G. Barry and 　 Anton Seimon.-p364～370 2. Impact of Climate Fluctuations on Mountain Environments in the Canadian 　 Rockies∥Brian Luckman and Trudy Kavanagh.-p371～380 3. Assessment of the Geomorphic Impacts of Forestry in British Columbia∥ 　 Olav Slaymaker.-p381～387 4. North American and European Treelines: External Forces and Internal 　 Processes Controlling Position∥Bjartmar Sveinbjornsson.-p388～395 5. Biotic Controls over Ecosystem Response to Environmental Change in 　 Alpine Tundra of the Rocky Mountains∥William D. Bowman.-p396～400 6. Aquatic Problems Caused by Human Activities in Banff National Park， 　 Alberta， Canada∥D.W. Schindler.-p401～407 7. Toward Sustainable Mountain Communities: Balancing Tourism Development 　 and Environmental Protection in Banff and Banff National Park， Canada 　 ∥Dianne Draper.-p408～415 8. Glacier Evolution in the Tropical Andes During the Last Decades of the 　 20th Century: Chacaltaya， Bolivia， and Antizana， Ecuador∥Bernard 　 Francou， Edson Ramirez， Bolivar Caceres and Javier Mendoza.-p416～422 9. Breaking Mountain Paradigms: Ecological Effects on Human Impacts in Man 　 -aged Tropandean Landscapes∥Fausto O. Sarmiento.-p423～431 10.Patterns of Landscape Transformation in Colombia， with Emphasis in the 　 Andean Region∥Andres Etter and Willem van Wyngaarden.-p432～439 11.Deforestation Impact on Water Dynamics in a Venezuelan Andean Cloud 　 Forest∥Michele Ataroff and Fermin Rada.-p440～444 12.Development Threats to Biodiversity and Opportunities for Conservation 　 in the Mountain Ranges of the Upper Bermejo River Basin， NW Argentina 　 and SW Bolivia∥Alfredo Grau and Alejandro Diego Brown.-p445～450 13.La Morada. A Case Study on the Impact of Human Pressure on the 　 Environment in the Ceja de Selva， Northeastern Peru∥Inge　Schjellerup. 　 -p451～454 14.Indigenous Knowledge as an Innovative Contribution to the Sustainable 　 Development of the Sierra Nevada of Santa Marta， Colombia. The Elder 　 Brothers， Guardians of the "Heart of the World"∥Guillermo E. Rodriguez 　 -Navarro.-p455～458