Results 131 to 140 of about 125,890 (374)

Freeze, thaw, fracture? [PDF]

, 2007
Why does freezing break up rock? Everybody knows that when water freezes it expands by nine percent to be precise. If it seeps into rocks and then freezes, the rocks can fracture and split apart, a process known as frost weathering.
Murton, Julian
core  

Complex population genetic structure of the bark beetle predator Thanasimus formicarius (L.) (Coleoptera: Cleridae) across its European range

Agricultural and Forest Entomology, EarlyView.
Abstract Thanasimus formicarius (L.) (Coleoptera: Cleridae) is an important bark beetle predator and can reduce bark beetle population densities of some of the most severe forest pests in Europe. We analysed the population genetics and phylogeography of T.
Eva Papek, Amina Derlić, Markus Melin, Alain Roques, Dragos Cocos, Martin L. Schroeder, Milan Pernek, Dimitrios N. Avtzis, Paulius Zolubas, David T. Williams, Juan A. Pajares, Oğuzhan Sarikaya, Roman Pavlin, Sevdalin Belilov, Martin M. Gossner, M. Lukas Seehausen, Anna Wierzbicka, Lara Kundtner, Christian Stauffer, Martin Schebeck   +19 more
wiley   +1 more source

Dependence of the evolution of carbon dynamics in the northern permafrost region on the trajectory of climate change

Proceedings of the National Academy of Sciences of the United States of America, 2018
Significance We applied regional and global-scale biogeochemical models that coupled thaw depth with soil carbon exposure to evaluate the dependence of the evolution of future carbon storage in the northern permafrost region on the trajectory of climate ...
A. McGuire, D. Lawrence, C. Koven, J. Clein, E. Burke, Guangsheng Chen, Elchin E. Jafarov, A. MacDougall, S. Marchenko, D. Nicolsky, S. Peng, A. Rinke, P. Ciais, I. Gouttevin, D. Hayes, D. Ji, G. Krinner, J. Moore, V. Romanovsky, C. Schädel, K. Schaefer, E. Schuur, Q. Zhuang   +22 more
semanticscholar   +1 more source

Evaluating permafrost physics in the Coupled Model Intercomparison Project 6 (CMIP6) models and their sensitivity to climate change

, 2020
. Permafrost is a ubiquitous phenomenon in the Arctic. Its future evolution is likely to control changes in northern high-latitude hydrology and biogeochemistry.
E. Burke, Yu Zhang, G. Krinner
semanticscholar   +1 more source

Environmental changes on the northern Taymyr Peninsula (Russian Arctic) during the last 62 ka inferred from the lacustrine pollen record

Boreas, EarlyView.
Environmental changes on the northern part of Taymyr Peninsula during the last 62 ka were reconstructed based on pollen assemblages throughout a 46‐m‐long sediment core from Lake Levinson‐Lessing (74°27′54″N, 98°39′58″E). Environmental changes on the northern Taymyr Peninsula were reconstructed based on a new pollen record from a 46‐m‐long sediment ...
Andrei A. Andreev, Pavel E. Tarasov, Matthias Lenz, Marlene M. Lenz, Stephanie Scheidt, Grigory B. Fedorov, Bernd Wagner, Martin Melles   +7 more
wiley   +1 more source

The role of changing temperature in microbial metabolic processes during permafrost thaw.

PLoS ONE, 2020
Approximately one fourth of the Earth's Northern Hemisphere is underlain by permafrost, earth materials (soil, organic matter, or bedrock), that has been continuously frozen for at least two consecutive years.
Komi S Messan, Robert M Jones, Stacey J Doherty, Karen Foley, Thomas A Douglas, Robyn A Barbato   +5 more
doaj   +1 more source

Respiration of aged soil carbon during fall in permafrost peatlands enhanced by active layer deepening following wildfire but limited following thermokarst [PDF]

, 2018
Permafrost peatlands store globally significant amounts of soil organic carbon (SOC) that may be vulnerable to climate change. Permafrost thaw exposes deeper, older SOC to microbial activity, but SOC vulnerability to mineralization and release as carbon ...
Czimczik, Claudia I, Estop-Aragonés, Cristian, Gibson, Carolyn, Heffernan, Liam, Olefeldt, David, Walker, Jennifer C, Xu, Xiaomei   +6 more
core  

A coupled hydrology-biogeochemistry model to simulate dissolved organic carbon exports from a permafrost influenced catchment [PDF]

, 2015
Funded by Natural Environment Research Council. Grant Number: NE/K000268/1 Natural Sciences and Engineering Research Council of CanadaPeer reviewedPublisher ...
Abdalla, Balcarczyk, Beven, Beven, Beven, Birkel, Bishop, Boyer, Carey, Carey, Carey, Carey, Cole, Cory, Criss, Dick, Dornes, Dye, Eddelbuettel, Eddelbuettel, Finlay, Frey, Futter, Gray, Guo, Guo, Guo, Gupta, Hamilton, Hamilton, Holmes, Holmes, Hottelet, Hugelius, Jutras, Kawahigashi, Kicklighter, Koch, Konz, Krause, Laudon, Lenton, Lewkowicz, Lindström, Lyon, Mann, McCartney, McClelland, McGuire, McNamara, Michalzik, Neff, O'Donnell, Oelke, Petrone, Prokushkin, Quinton, Quinton, Quinton, Raymond, Schoups, Schuur, Smith, Smith, Striegl, Tank, Tetzlaff, Thornthwaite, Tjoelker, Van Griensven, Wickland, Zambrano-Bigiarini, Zou   +72 more
core   +1 more source

Weichselian–Holocene glacial history of the Sjuøyane archipelago, northern Svalbard

Boreas, EarlyView.
To reconstruct the glacial history of Sjuøyane, we describe coastal sedimentary sections in Quaternary sediments and constrain their chronology by radiocarbon and optically stimulated luminescence ages. The sedimentary sections largely consist of shallow (glacio‐)marine and/or littoral sediments deposited during high relative sea levels.
Anders Schomacker, Helena Alexanderson, Wesley R. Farnsworth, Mark F. A. Furze, Sofia E. Kjellman, Nina Kirchner, Elias Strandell Erstorp, Riko Noormets, Vincent Jomelli, Ólafur Ingólfsson   +9 more
wiley   +1 more source

Estimated stocks of circumpolar permafrost carbon with quantified uncertainty ranges and identified data gaps

, 2014
Soils and other unconsolidated deposits in the northern circumpolar permafrost region store large amounts of soil organic carbon (SOC). This SOC is potentially vulnerable to remobilization following soil warming and permafrost thaw, but SOC stock ...
G. Hugelius, J. Strauss, S. Zubrzycki, J. Harden, E. Schuur, Chien-Lu Ping, Lutz Schirrmeister, G. Grosse, G. Michaelson, C. Koven, J. O’Donnell, B. Elberling, U. Mishra, P. Camill, Zicheng Yu, J. Palmtag, P. Kuhry   +16 more
semanticscholar   +1 more source