Results 11 to 20 of about 109,024 (352)

Shrub expansion in tundra ecosystems: dynamics, impacts and research priorities [PDF]

Environmental Research Letters, 2011
Recent research using repeat photography, long-term ecological monitoring and dendrochronology has documented shrub expansion in arctic, high-latitude and alpine tundra ecosystems.
I. Myers-Smith, I. Myers-Smith, B. Forbes, M. Wilmking, M. Hallinger, T. Lantz, D. Blok, K. Tape, M. Macias‐Fauria, U. Sass-Klaassen, E. Lévesque, S. Boudreau, Pascale Ropars, L. Hermanutz, A. Trant, L. S. Collier, S. Weijers, J. Rozema, Shelly A Rayback, N. Schmidt, G. Schaepman‐Strub, S. Wipf, C. Rixen, Cecile B Menard, S. Venn, S. Goetz, L. Andreu‐Hayles, S. Elmendorf, V. Ravolainen, J. Welker, P. Grogan, H. Epstein, D. Hik   +32 more
semanticscholar   +5 more sources

CALL BROADCASTING AND AUTOMATED RECORDERS AS TOOLS FOR ANURAN SURVEYS IN A SUBARCTIC TUNDRA LANDSCAPE [PDF]

, 2014
Relatively little is known about population ecology of anurans in arctic and subarctic tundra regions, in part because it is difficult to survey anurans in these landscapes.
Gad Perry, R. Nicholas Mannan, David E. Andersen, Clint W. Boal   +3 more
openalex   +3 more sources

Diversification of Nitrogen Sources in Various Tundra Vegetation Types in the High Arctic. [PDF]

PLoS ONE, 2015
Low nitrogen availability in the high Arctic represents a major constraint for plant growth, which limits the tundra capacity for carbon retention and determines tundra vegetation types.
Grzegorz Skrzypek, Bronisław Wojtuń, Dorota Richter, Dariusz Jakubas, Katarzyna Wojczulanis-Jakubas, Aleksandra Samecka-Cymerman   +5 more
doaj   +1 more source

Tundra Type Drives Distinct Trajectories of Functional and Taxonomic Composition of Arctic Fungal Communities in Response to Climate Change – Results From Long-Term Experimental Summer Warming and Increased Snow Depth

Frontiers in Microbiology, 2021
The arctic tundra is undergoing climate-driven changes and there are serious concerns related to the future of arctic biodiversity and altered ecological processes under possible climate change scenarios.
József Geml, József Geml, Luis N. Morgado, Luis N. Morgado, Tatiana A. Semenova-Nelsen   +4 more
doaj   +1 more source

Drying of tundra landscapes will limit subsidence-induced acceleration of permafrost thaw

Proceedings of the National Academy of Sciences of the United States of America, 2023
Significance Topography change caused by melting ice in Arctic soils has the potential to accelerate permafrost thaw and trigger abrupt and large-scale change in the Arctic.
S. Painter, E. Coon, A. J. Khattak, J. Jastrow   +3 more
semanticscholar   +1 more source

Statistical upscaling of ecosystem CO2 fluxes across the terrestrial tundra and boreal domain: Regional patterns and uncertainties

Global Change Biology, 2021
The regional variability in tundra and boreal carbon dioxide (CO2) fluxes can be high, complicating efforts to quantify sink‐source patterns across the entire region.
Anna‐Maria Virkkala, J. Aalto, B. Rogers, T. Tagesson, C. Treat, S. Natali, J. Watts, S. Potter, A. Lehtonen, M. Mauritz, E. Schuur, J. Kochendorfer, D. Zona, W. Oechel, Hideki Kobayashi, E. Humphreys, M. Goeckede, H. Iwata, P. Lafleur, E. Euskirchen, S. Bokhorst, M. Marushchak, P. Martikainen, B. Elberling, C. Voigt, C. Biasi, O. Sonnentag, F. Parmentier, M. Ueyama, G. Celis, Vincent L St Loius, C. Emmerton, M. Peichl, J. Chi, J. Järveoja, M. Nilsson, S. Oberbauer, M. Torn, Sang‐Jong Park, H. Dolman, I. Mammarella, N. Chae, R. Poyatos, E. López-Blanco, Torben Røjle Christensen, Min Jung Kwon, T. Sachs, D. Holl, M. Luoto   +48 more
semanticscholar   +1 more source

Strong isoprene emission response to temperature in tundra vegetation

Proceedings of the National Academy of Sciences of the United States of America, 2022
Significance How ecosystem–atmosphere exchange of reactive hydrocarbons, biogenic volatile organic compounds (BVOCs), responds to climate change may provide important feedbacks on the regional climate.
R. Seco, T. Holst, C. Davie-Martin, Tihomir Simin, A. Guenther, N. Pirk, J. Rinne, R. Rinnan   +7 more
semanticscholar   +1 more source

The International Tundra Experiment (ITEX): 30 years of research on tundra ecosystems

Arctic Science, 2022
The International Tundra Experiment (ITEX) was founded in 1990 as a network of scientists studying responses of tundra ecosystems to ambient and experimental climate change at Arctic and alpine sites across the globe.
G. Henry, R. Hollister, K. Klanderud, R. Björk, Anne D. Bjorkman, Cassandra Elphinstone, I. Jónsdóttir, U. Molau, A. Petraglia, S. Oberbauer, C. Rixen, P. Wookey   +11 more
semanticscholar   +1 more source

Siberian taiga and tundra fire regimes from 2001–2020

, 2022
Circum-boreal and -tundra systems are crucial carbon pools that are experiencing amplified warming and are at risk of increasing wildfire activity. Changes in wildfire activity have broad implications for vegetation dynamics, underlying permafrost soils,
Anna C. Talucci, M. Loranty, H. Alexander   +2 more
semanticscholar   +1 more source

A tipping point in carbon storage when forest expands into tundra is related to mycorrhizal recycling of nitrogen.

Ecology Letters, 2021
Tundra ecosystems are global belowground sinks for atmospheric CO2 . Ongoing warming-induced encroachment by shrubs and trees risks turning this sink into a CO2 source, resulting in a positive feedback on climate warming.
K. Clemmensen, M. Durling, A. Michelsen, S. Hallin, R. Finlay, Björn D. Lindahl   +5 more
semanticscholar   +1 more source