Results 21 to 30 of about 973,278 (223)

Variability of Permafrost and Landscape Conditions Following Forest Fires in the Central Yakutian Taiga Zone

Land, 2022
In the last two decades in Central Yakutia, there has been a significant change in cryogenic landscapes related to climate warming and anthropogenic disturbances.
M. I. Petrov, A. Fedorov, P. Konstantinov, R. N. Argunov   +3 more
semanticscholar   +1 more source

Retrogressive Thaw Slumps Produce a Changing Disturbance Regime for Arctic Stream Invertebrates. [PDF]

Glob Chang Biol
Climate change is causing permafrost to thaw, resulting in the formation of large craters in the ground called thaw slumps, which deposit sediments and nutrients into rivers and continually impact stream ecosystems over time. We returned to slump impacted streams 10 years after an initial sample period and found that slumps permanently change streams ...
Dolan M, Musetta-Lambert J, Chin KS, Kokelj SV, Tank SE, Lento J, Power M, Culp JM.   +7 more
europepmc   +2 more sources

Remote Sensing-Based Statistical Approach for Defining Drained Lake Basins in a Continuous Permafrost Region, North Slope of Alaska

Remote Sensing, 2021
Lake formation and drainage are pervasive phenomena in permafrost regions. Drained lake basins (DLBs) are often the most common landforms in lowland permafrost regions in the Arctic (50% to 75% of the landscape).
Helena Bergstedt, Benjamin M. Jones, Kenneth Hinkel, Louise Farquharson, Benjamin V. Gaglioti, Andrew D. Parsekian, Mikhail Kanevskiy, Noriaki Ohara, Amy L. Breen, Rodrigo C. Rangel, Guido Grosse, Ingmar Nitze   +11 more
doaj   +1 more source

Graminoids Increase Greenhouse Gas Emissions From Thawed Permafrost at the End of the Growing Season. [PDF]

Glob Chang Biol
Field study investigating whether and to which degree graminoids further reduce soil redox and lead to more greenhouse gas emissions from thawing permafrost soil on top of hydrology and anoxia effects. Graminoids, thus, contribute to thawed permafrost soils turning to C sources rather than sinks toward the end of the growing season.
Mollenkopf M, Lenge K, Drabesch S, Monteux S, van Grinsven S, Joshi P, Dorrepaal E, Wild B, Kappler A, Muehe EM.   +9 more
europepmc   +2 more sources

Isotropic thaw subsidence in undisturbed permafrost landscapes [PDF]

Geophysical Research Letters, 2013
AbstractObservations in undisturbed terrain within some regions of the Arctic reveal limited correlation between increasing air temperature and the thickness of the seasonally thawed layer above ice‐rich permafrost. Here we describe landscape‐scale, thaw‐induced subsidence lacking the topographic contrasts associated with thermokarst terrain.
Nikolay I. Shiklomanov, Dmitry A. Streletskiy, Jonathon D. Little, Frederick E. Nelson   +3 more
openaire   +1 more source

Landscape, Soil, Lithology, Climate and Permafrost Control on Dissolved Carbon, Major and Trace Elements in the Ob River, Western Siberia

Water, 2021
Assuming that climate warming in the WSL will lead to a northward shift of the forest and permafrost boundaries, a “substituting space for time” approach predicts an increase in concentration of DIC and labile major and trace elements and a decrease of ...
I. Kolesnichenko, L. Kolesnichenko, S. Vorobyev, L. Shirokova, I. Semiletov, O. Dudarev, Rostislav Vorobev, Uliana Shavrina, S. Kirpotin, O. Pokrovsky   +9 more
semanticscholar   +1 more source

Brief Communication: Future avenues for permafrost science from the perspective of early career researchers [PDF]

The Cryosphere, 2015
Accelerating climate change and increased economic and environmental interests in permafrost-affected regions have resulted in an acute need for more directed permafrost research.
M. Fritz, B. N. Deshpande, F. Bouchard, E. Högström, J. Malenfant-Lepage, A. Morgenstern, A. Nieuwendam, M. Oliva, M. Paquette, A. C. A. Rudy, M. B. Siewert, Y. Sjöberg, S. Weege   +12 more
doaj   +1 more source

Beaded streams of Arctic permafrost landscapes [PDF]

, 2014
Abstract. Beaded streams are widespread in permafrost regions and are considered a common thermokarst landform. However, little is known about their distribution, how and under what conditions they form, and how their intriguing morphology translates to ecosystem functions and habitat. Here we report on a Circum-Arctic inventory of beaded streams and a
C. D. Arp, M. S. Whitman, B. M. Jones, G. Grosse, B. V. Gaglioti, K. C. Heim   +5 more
openaire   +1 more source

Localized Vegetation, Soil Moisture, and Ice Content Offset Permafrost Degradation under Climate Warming

Geosciences, 2023
Rapid Arctic warming is expected to result in widespread permafrost degradation. However, observations show that site-specific conditions (vegetation and soils) may offset the reaction of permafrost to climate change.
Gleb E. Oblogov, Alexander A. Vasiliev, Dmitry A. Streletskiy, Nikolay I. Shiklomanov, Kelsey E. Nyland   +4 more
doaj   +1 more source

Scaling-up permafrost thermal measurements in western Alaska using an ecotype approach [PDF]

The Cryosphere, 2016
Permafrost temperatures are increasing in Alaska due to climate change and in some cases permafrost is thawing and degrading. In areas where degradation has already occurred the effects can be dramatic, resulting in changing ecosystems, carbon release,
W. L. Cable, V. E. Romanovsky, V. E. Romanovsky, M. T. Jorgenson   +3 more
doaj   +1 more source