A vegetation, climate and environment reconstruction based on palynological analyses of high arctic tundra peat cores (5000–6000 years BP) from Svalbard

2007 ◽  
pp. 155-174 ◽  
Author(s):  
J. Rozema ◽  
P. Boelen ◽  
M. Doorenbosch ◽  
S. Bohncke ◽  
P. Blokker ◽  
...  
Keyword(s):  
Arctic Tundra ◽  
High Arctic

Long-term experimentally deepened snow decreases growing-season respiration in a low- and high-arctic tundra ecosystem

2016 ◽  
Vol 121 (5) ◽  
pp. 1236-1248 ◽  
Author(s):  
Philipp R. Semenchuk ◽  
Casper T. Christiansen ◽  
Paul Grogan ◽  
Bo Elberling ◽  
Elisabeth J. Cooper
Keyword(s):  
Growing Season ◽  
Arctic Tundra ◽  
High Arctic ◽  
Tundra Ecosystem

scholarly journals Plant community composition and species richness in the High Arctic tundra: From the present to the future

2017 ◽  
Vol 7 (23) ◽  
pp. 10233-10242 ◽  
Author(s):  
Jacob Nabe-Nielsen ◽  
Signe Normand ◽  
Francis K. C. Hui ◽  
Laerke Stewart ◽  
Christian Bay ◽  
...  
Keyword(s):  
Species Richness ◽  
Community Composition ◽  
Plant Community ◽  
Arctic Tundra ◽  
High Arctic ◽  
Plant Community Composition ◽  
The Future

scholarly journals Increased Turnover but Little Change in the Carbon Balance of High-Arctic Tundra Exposed to Whole Growing Season Warming

2004 ◽  
Vol 36 (3) ◽  
pp. 298-307 ◽  
Author(s):  
Fleur L. Marchand ◽  
Ivan Nijs ◽  
Hans J. de Boeck ◽  
Fred Kockelbergh ◽  
Sofie Mertens ◽  
...  
Keyword(s):  
Carbon Balance ◽  
Growing Season ◽  
Arctic Tundra ◽  
High Arctic

scholarly journals Two years with extreme and little snowfall: effects on energy partitioning and surface energy exchange in a high-Arctic tundra ecosystem

2016 ◽  
Vol 10 (4) ◽  
pp. 1395-1413 ◽  
Author(s):  
Christian Stiegler ◽  
Magnus Lund ◽  
Torben Røjle Christensen ◽  
Mikhail Mastepanov ◽  
Anders Lindroth
Keyword(s):  
Energy Balance ◽  
Surface Energy ◽  
Snow Cover ◽  
Energy Exchange ◽  
Surface Energy Balance ◽  
Arctic Tundra ◽  
High Arctic ◽  
Snow Accumulation ◽  
Heat Fluxes ◽  
Tundra Ecosystem

Abstract. Snow cover is one of the key factors controlling Arctic ecosystem functioning and productivity. In this study we assess the impact of strong variability in snow accumulation during 2 subsequent years (2013–2014) on the land–atmosphere interactions and surface energy exchange in two high-Arctic tundra ecosystems (wet fen and dry heath) in Zackenberg, Northeast Greenland. We observed that record-low snow cover during the winter 2012/2013 resulted in a strong response of the heath ecosystem towards low evaporative capacity and substantial surface heat loss by sensible heat fluxes (H) during the subsequent snowmelt period and growing season. Above-average snow accumulation during the winter 2013/2014 promoted summertime ground heat fluxes (G) and latent heat fluxes (LE) at the cost of H. At the fen ecosystem a more muted response of LE, H and G was observed in response to the variability in snow accumulation. Overall, the differences in flux partitioning and in the length of the snowmelt periods and growing seasons during the 2 years had a strong impact on the total accumulation of the surface energy balance components. We suggest that in a changing climate with higher temperature and more precipitation the surface energy balance of this high-Arctic tundra ecosystem may experience a further increase in the variability of energy accumulation, partitioning and redistribution.

Process-Oriented Modeling of a High Arctic Tundra Ecosystem: Long-Term Carbon Budget and Ecosystem Responses to Interannual Variations of Climate

2018 ◽  
Vol 123 (4) ◽  
pp. 1178-1196 ◽  
Author(s):  
Wenxin Zhang ◽  
Per-Erik Jansson ◽  
Guy Schurgers ◽  
Jørgen Hollesen ◽  
Magnus Lund ◽  
...  
Keyword(s):  
Carbon Budget ◽  
Arctic Tundra ◽  
High Arctic ◽  
Interannual Variations ◽  
Ecosystem Responses ◽  
Tundra Ecosystem ◽  
Process Oriented

scholarly journals Winter Ecosystem Respiration and Sources of CO2From the High Arctic Tundra of Svalbard: Response to a Deeper Snow Experiment

2018 ◽  
Vol 123 (8) ◽  
pp. 2627-2642 ◽  
Author(s):  
M. Lupascu ◽  
C. I. Czimczik ◽  
M. C. Welker ◽  
L. A. Ziolkowski ◽  
E. J. Cooper ◽  
...  
Keyword(s):  
Ecosystem Respiration ◽  
Arctic Tundra ◽  
High Arctic

CO 2 ‐fluxes in different plant communities of a high‐Arctic tundra watershed (Western Spitsbergen)

1999 ◽  
Vol 10 (3) ◽  
pp. 413-420 ◽  
Author(s):  
Christoph Wüthrich ◽  
Ingo Möller ◽  
Dietbert Thannheiser
Keyword(s):  
Plant Communities ◽  
Arctic Tundra ◽  
High Arctic
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