Results 91 to 100 of about 2,287,439 (234)

Ultraviolet Vision May Enhance the Ability of Reindeer to Discriminate Plants in Snow [PDF]

, 2014
In reindeer/caribou (Rangifer tarandus), the lens and cornea of the eye transmit ultraviolet (UV) light, and the retinae respond to it electro-physiologically.
Jeffery, G., Hogg, CR, Stokkan, K.-A., Tyler, N.J.C., Hogg, C.R., Tyler, NJC, Jeffery, G, Stokkan, K-A   +7 more
core  

Mesoclimatic origin affects alpine plant germination but not its plasticity

Oikos, EarlyView.
Mountain ecosystems are disproportionately exposed to global warming, which may put alpine plant species in particular at risk. Plant species' migration and persistence depend on successful seed regeneration, with demographic traits such as germination being strongly sensitive to both present and ancestral climate.
Lukas Dietrichstein, Norbert Helm, Kryštof Chytrý, Andreas Mayr, Johannes Wessely, Andreas Kollert, Maximiliane M. Herberich   +6 more
wiley   +1 more source

Experimental and field evidence indicate that islet‐nesting tundra birds experience reduced nest predation and benefit indirectly from high snow goose densities

Oikos, EarlyView.
Landscape features can shape the occurrence and strength of predator–prey interactions by influencing predation risk and prey distribution. In the High Arctic, some bird species select nesting sites with physical features that impede access for their main terrestrial predator, the Arctic fox.
Marylou Beaudoin, Andréanne Beardsell, Éliane Duchesne, Madeleine‐Zoé Corbeil‐Robitaille, Pierre Legagneux, Dominique Berteaux, Joël Bêty   +6 more
wiley   +1 more source

Electroencephalographic Resting‐State Microstates are Unstable in Visual Snow Syndrome

Brain and Behavior
Objective To study large‐scale network processing in visual snow syndrome (VSS) with and without migraine, we applied resting‐state electroencephalographic microstate analysis.
Sarah A. Aeschlimann, Antonia Klein, Frédéric Zubler, Christoph J. Schankin, Matthias Ertl   +4 more
doaj   +1 more source

Visual Perception Optimization of Residential Landscape Spaces in Cold Regions Using Virtual Reality and Machine Learning

Land
The visual perception of landscape spaces between residences in cold regions is important for public health. To compensate for the existing research ignoring the cold snow season’s influence, this study selected two types of outdoor landscape space ...
Xueshun Li, Kuntong Huang, Ruinan Zhang, Yang Chen, Yu Dong   +4 more
doaj   +1 more source

How can children and young people have a voice in urban treescapes?

People and Nature, EarlyView.
Abstract Scientific understanding of climate change has, to date, failed to result in sufficient action. This paper proposes that a deficit model of top‐down learning and dissemination in relation to public engagement with science may be part of the problem, particularly when considering the attitudes, values and empowerment of children and young ...
Simon Carr, Abi Hackett, Kate Pahl, Samyia Ambreen, Khawla Badwan, Elizabeth Curtis, Susannah Gill, Ambika Kapoor, Peter Lawrence, Johan Siebers, Jan White   +10 more
wiley   +1 more source

Spontaneous posterior vitreous detachment and chronification of migraine with aura: A case report exploring visual snow syndrome

Headache Medicine
Introduction: Posterior vitreous detachment is characterized by the separation of the vitreous humor from the retina, with its spontaneous occurrence involving photopsias and floaters.
João Guilherme Bochnia Küster, Elcio Juliato Piovesan   +1 more
doaj   +1 more source

Statistical properties of fresh snow roughness

, 2008
We present results from a series of experiments in which fresh snow roughness was measured by means of digital photography and analyzed using the random field approach.
C. Manes, Bartlett, S., L. Egli, Manes, Costantino, LOEWE H, EGLI L., Bartlett, S.J., Lehning, M., GUALA M, Guala, M., M. Lehning, Egli, L., Manes, C., S. Bartlett, BARTLETT S, LEHNING M, Loewe, H., Löwe, H., M. Guala, H. Löwe   +19 more
core   +1 more source

Spatio-temporal influence of tundra snow properties on Ku-band (17.2 GHz) backscatter [PDF]

, 2015
During the 2010/11 boreal winter, a distributed set of backscatter measurements was collected using a ground-based Ku-band (17.2 GHz) scatterometer system at 26 open tundra sites.
King, Joshua, Kasurak, Andrew, Watts, Tom, Kelly, Richard, Dugauy, Claude, Rutter, Nick, Gunn, Grant, Derksen, Chris   +7 more
core   +1 more source

Evaluating Testability of Permafrost Models Through Physical and Thermal Testing in Complex Mountain Terrain, Yukon, Canada

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Due to its subsurface nature, permafrost cannot be directly observed with the naked eye or optical remote sensing. Consequently, accurately describing its distribution and thermal state is challenging. This is especially true in vast, remote environments, where obtaining comprehensive field data is demanding or improbable.
Ria Nicholson, Philip P. Bonnaventure, Nick C. Noad, Madeleine C. Garibaldi, Rabecca Thiessen, Will Kochtitzky   +5 more
wiley   +1 more source