Results 41 to 50 of about 456,875 (239)

Processes of crevasse formation and the dynamics of calving glaciers : a study at Breiđamerkurjökull [PDF]

, 2009
A new model proposed by Benn et al. (2006, 2007) explains the dynamics of calving glaciers based on a new sliding law and a calving criterion modified from a crevasse depth model. In this thesis three key elements of this model are tested: 1) the role
Mottram, Ruth
core   +2 more sources

Precipitation phase drives seasonal and decadal snowline changes in high mountain Asia

Environmental Research Letters
Snow cover is of key importance for water resources in high mountain Asia (HMA) and is expected to undergo extensive changes in a warming climate.
M Bernat, E S Miles, M Kneib, K Fujita, O Sasaki, T E Shaw, F Pellicciotti   +6 more
doaj   +1 more source

Micrometeorological and morphological observations of surface hoar dynamics on a mountain snow cover [PDF]

, 2010
The formation, growth, and destruction of surface hoar crystals is an important feature of mountain snow covers as buried surface hoar layers are a frequent weak layer leading to unstable snowpacks.
C. Manes, C. Fierz, Lehning, Manes, Costantino, STOESSEL F, Lehning, M., GUALA M, Guala, M., M. Lehning, M, Manes, C., Fierz, C., FIERZ C, F. Stössel, M. Guala, Stossel, F., Lehning, Michael, Stoessel, F.   +17 more
core   +1 more source

Hot and cold deserts as eco‐evolutionary arenas for understanding plant resistance to multiple abiotic stressors

Biological Reviews, EarlyView.
ABSTRACT During their long evolutionary history, land plants have evolved a range of adaptations to different abiotic stressors. These help explain present‐day diversity and distribution patterns, as well as the potential resilience of natural and agricultural systems to a changing climate. Most previous research has focused on adaptation to individual
Marc Fradera‐Soler, Natasha Barbolini, Anže Žerdoner Čalasan, Marian Schubert, Catarina Rydin, Olwen M. Grace, Aelys M. Humphreys   +6 more
wiley   +1 more source

Younger Dryas glacier advances in the tropical Andes driven by increased precipitation

Scientific Reports
There is currently a debate about the timing and drivers of former glacier behaviour and climate change in the tropical Andes. Using 10Be dating we determined the ages of 21 boulders on moraines in the Santa Cruz Valley, Peru (∼10°S, altitudes ~ 4100 to ~
Neil F. Glasser, Stephan Harrison, Ryan Wilson, Joanne Wood, Matthew Peacey, Dylan Rood, Keir Nichols, Renato R. Colucci, Costanza Del Gobbo, Andrea Securo, J. C. Torres, Christian Riveros, Harrinson W. Jara, Enver Melgarejo, Hilbert Villafane, Manuel Cosi   +15 more
doaj   +1 more source

Resolving the biome debate: ecological and palaeo‐data concur that the extensive tree‐limited grassy biomes of central and north‐western Madagascar are largely anthropogenic

Biological Reviews, EarlyView.
ABSTRACT For millennia, human activities have transformed ecosystems globally. Determining which landscapes are predominantly anthropogenic is crucial to conservation and habitat restoration. Madagascar, a critically‐threatened biodiversity hotspot, is a prominent example.
Grant S. Joseph, Sean Hixon, Colleen L. Seymour, Laurie R. Godfrey, Miguel Pedrono, Karen E. Samonds, Andrinajoro R. Rakotoarivelo, Brooke E. Crowley   +7 more
wiley   +1 more source

Talin1 Adhesion Morphology and Colocalization With Tensin3 Are Largely Unaffected by Polyacrylamide Substrate Stiffness

Cytoskeleton, EarlyView.
ABSTRACT Cells sense the stiffness of their extracellular matrix (ECM) and adapt their behavior accordingly. We investigated how ECM stiffness affects the spatial organization of talin1, a key mechanosensitive focal adhesion protein. Using polyacrylamide (PA) hydrogels with tunable stiffnesses (0.2–188 kPa), we analyzed cell morphology, migration ...
Joanna Hajduk, Patrycja Twardawa, Sylwia Bobis‐Wozowicz, Marta Szewczyk, Zenon Rajfur, Zbigniew Baster   +5 more
wiley   +1 more source

Recent changes in area and thickness of Torngat Mountain glaciers (northern Labrador, Canada) [PDF]

The Cryosphere, 2017
The Torngat Mountains National Park, northern Labrador, Canada, contains more than 120 small glaciers: the only remaining glaciers in continental northeast North America.
N. E. Barrand, R. G. Way, T. Bell, M. J. Sharp   +3 more
doaj   +1 more source

Phylogenetic structure of conifers in regional floras in relation to climate and environmental heterogeneity worldwide

Ecography, EarlyView.
Despite having only about 670 species worldwide, conifers are one of the ecologically and economically most important plant groups. They have a rich fossil record and previous studies have shown that their current diversity is the result of past radiations, extinction, and dispersal events, restricting many genera to either the Northern or Southern ...
Hong Qian, Michael Kessler, Shenhua Qian
wiley   +1 more source

Rock glaciers in mixed lithologies: a case study from Northern Pirin

Revista de Geomorfologie, 2020
Rock glaciers are lobate or tongue-shaped assemblages of poorly sorted, angular-rock debris and ice, commonly found in high mountain environments, which move as a consequence of the deformation of internal ice (Giardino and Vitek, 1988; Barsch, 1996 ...
Emil Mariov GACHEV
doaj   +1 more source