Results 41 to 50 of about 24,870 (271)

Retrospective Analysis of Wood Anatomical Traits Reveals a Recent Extension in Tree Cambial Activity in Two High-Elevation Conifers [PDF]

, 2017
The study of xylogenesis or wood formation is a powerful, yet labor intensive monitoring approach to investigate intra-annual tree growth responses to environmental factors.
Angela L. Prendin, Daniele Castagneri, Georg von Arx, Georg von Arx, Giai Petit, Marco Carrer   +5 more
core   +2 more sources

Combined Effects of Precipitation and Temperature on the Responses of Forest Spring Phenology to Winter Snow Cover Dynamics in Northeast China

IEEE Access, 2019
The start date of vegetation growing season (SOS) is generally considered as an essential indicator to reflect vegetation growth condition. To date, relatively little research has explored the combined effects of temperature and precipitation on the ...
Dejing Qiao, Jianmin Zhou, Shuang Liang, Xiyou Fu   +3 more
doaj   +1 more source

Spatiotemporal Variation of Snow Cover and Its Response to Climate Change in the Source Region of the Yangtze River, China

Atmosphere, 2022
In the context of global warming, snow cover changes have an extremely important impact on the hydrological cycle and the redistribution of water resources in arid and semi-arid regions.
Mengqi Shi, Zhe Yuan, Xiaofeng Hong, Simin Liu   +3 more
doaj   +1 more source

Snow Height Sensors Reveal Phenological Advance in Alpine Grasslands

Global Change Biology
ABSTRACTLong‐term phenological data in alpine regions are often limited to a few locations and thus, little is known about climate‐change‐induced plant phenological shifts above the treeline. Because plant growth initiation in seasonally snow‐covered regions is largely driven by snowmelt timing and local temperature, it is essential to simultaneously ...
Michael Zehnder, Beat Pfund, Jan Svoboda, Christoph Marty, Yann Vitasse, Jake Alexander, Janneke Hille Ris Lambers, Christian Rixen   +7 more
openaire   +2 more sources

Relationship between Spatiotemporal Variations of Climate, Snow Cover and Plant Phenology over the Alps—An Earth Observation-Based Analysis

Remote Sensing, 2018
Alpine ecosystems are particularly sensitive to climate change, and therefore it is of significant interest to understand the relationships between phenology and its seasonal drivers in mountain areas.
Sarah Asam, Mattia Callegari, Michael Matiu, Giuseppe Fiore, Ludovica De Gregorio, Alexander Jacob, Annette Menzel, Marc Zebisch, Claudia Notarnicola   +8 more
doaj   +1 more source

Facultative Altitudinal Movements by Mountain White-Crowned Sparrows (Zonotrichia Leucophrys Oriantha) in the Sierra Nevada [PDF]

, 2004
Mountain White-crowned Sparrows (Zonotrichia leucophrys oriantha) winter in Mexico and often arrive in the vicinity of their breeding grounds in the Sierra Nevada well before nesting is possible.
Breuner, Creagh W., Hahn, Thomas P., Morton, Martin L., Sockman, Keith W.   +3 more
core   +3 more sources

On the Limits of Alpine Plants: A Systematic Review of the Factors Behind Species' Elevational Range Limits. [PDF]

Ecol Evol
This systematic review of 107 studies on the factors behind the elevational range limits of alpine vascular plants shows a persistent emphasis on upper limits and abiotic factors, especially temperature, while work at lower limits is more evenly distributed across water availability, plant–plant interactions, and selection/local adaptation.
Weides SE, Grytnes JA, Dullinger S, Lenoir J, Pacheco-Riaño LC, Pannell JR, Wipf S, Rumpf SB.   +7 more
europepmc   +2 more sources

Dominance of grain size impacts on seasonal snow albedo at deforested sites in New Hampshire [PDF]

, 2017
Snow cover serves as a major control on the surface energy budget in temperate regions due to its high reflectivity compared to underlying surfaces.
Aoki, Aoki, Aoki, Aoki, Banta, Barnett, Brown, Carmagnola, Cohen, Colbeck, Contosta, Dang, Delaney, Diamond, Doherty, Doherty, Douville, Draxler, Déry, Fierz, Flanner, Flanner, Fletcher, Gallet, Grenfell, Groisman, Hadley, Hall, Hallett, Hamilton, Hansen, Huntington, Intergovernmental Panel on Climate Change (IPCC), Kaspari, Kaspari, Knowles, Kokhanovsky, Lazarcik, Lhermitte, Libbrecht, Meinander, Nolin, Oaida, Painter, Painter, Painter, Painter, Painter, Pedersen, Peng, Perovich, Perovich, Picard, Polashenski, Qian, Qian, Qu, Qu, Ramanathan, Sall, Singh, Skiles, Skiles, Skiles, Slater, Steffensen, Sterle, Trenberth, Tukey, Verseghy, Warren, Weiss, White, Wiscombe, Wright, Yasunari   +75 more
core   +3 more sources

Digging deep to open the white black box of snow root phenology [PDF]

Ecological Research, 2013
Abstract Snow roots are specialized structures recently discovered in the Caucasian alpine snow‐bed plant Corydalis conorhiza . They form extensive networks that grow into snow packs against gravity, most probably to gather nitrogen from snow.
Onipchenko, V.G., Kipkeev, A.M., Makarov, M.I., Kozhevnikova, A.D., Ivanov, V.B., Soudzilovskaia, N.A., Tekeev, D.K., Salpagarova, F.S., Werger, M.J.A., Cornelissen, J.H.C.   +9 more
openaire   +2 more sources

A random-forest-derived 35-year snow phenology record reveals climate trends in the Yukon River Basin [PDF]

The Cryosphere
This study presents a 35-year snow phenology record for the Yukon River Basin (YRB), developed using a random forest (RF) model at a 3.125 km resolution, capturing detailed trends in snowmelt onset and snow-off.
C. G. Pan, K. Lasko, S. P. Griffin, J. S. Kimball, J. Du, T. G. Meehan, P. B. Kirchner   +6 more
doaj   +1 more source