Arctic, Antarctic, and Alpine Research

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Vol. 36, No. 3, 2004

Special Issue:

Arctic-Alpine Ecosystems and People in a Changing Environment

Challenges in Arctic-Alpine Environmental Research  
Jon Børre Ørbæk, Ingunn Tombre, Roland Kallenborn
281
Temporal Trends in Atmospheric Heavy Metal and Organochlorine Concentrations at Zeppelin, Svalbard  
Torunn Berg, Roland Kallenborn, Stein Manø
284
Estimation of the Long-range Transport of Mercury, Cadmium, and Lead to Northern Finland on the Basis of Moss Surveys  
Jarmo Poikolainen, Eero Kubin, Juha Piispanen, Jouni Karhu
292
Increased Turnover but Little Change in the Carbon Balance of High-Arctic Tundra Exposed to Whole Growing Season Warming  
Fleur L. Marchand, Ivan Nijs, Hans J. de Boeck, Fred Kockelbergh, Sofie Mertens, Louis Beyens
298
Out of Sight, Out of Mind: Thermal Acclimation of Root Respiration in Arctic Ranunculus  
Elisabeth J. Cooper
308
Modeling the Location of the Forest Line in Northeast European Russia with Remotely Sensed Vegetation and GIS-Based Climate and Terrain Data  
Tarmo Virtanen, Kari Mikkola, Ari Nikula, Jens H. Christensen, Galina G. Mazhitova, Naum G. Oberman, Peter Kuhry
314
Vegetation Changes in the Nordic Mountain Birch Forest: the Influence of Grazing and Climate Change  
H. Tømmervik, B. Johansen, I. Tombre, D. Thannheiser, K. A. Høgda, E. Gaare, F. E. Wielgolaski
323
Effect of Winter Snow and Ground-Icing on a Svalbard Reindeer Population: Results of a Simple Snowpack Model  
Jack Kohler, Ronny Aanes
333
Phytoplankton Biomass and Water Chemistry in Two High-Mountain Tropical Lakes in Central Mexico  
J. Alcocer, L. A. Oseguera, E. Escobar, L. Peralta, A. Lugo
342
Variations in Thermal Growing, Heating, and Freezing Indices in the Nordic Arctic, 1900-2050  
E. J. Førland, T. E. Skaugen, R. E. Benestad, I. Hanssen-Bauer, O. E. Tveito
347
A Satellite-Derived UV Radiation Climatology over Europe to Support Impact Studies  
Jean Verdebout
357
Reduction of the Ambient UV-B Radiation in the High-Arctic Increases F iV/Fm in Salix arctica and Vaccinium uliginosum and Reduces Stomatal Conductance and Internal CO2 Concentration in Salix arctica  
Linda Bredahl, Helge Ro-Poulsen, Teis N. Mikkelsen
364
Evidence of Sublethal Damage in Daphnia (Cladocera) during Exposure to Solar UV Radiation in Subarctic Ponds  
Iris D. Zellmer, Michael T. Arts, Doris Abele, Klaus Humbeck
370