Results 31 to 40 of about 8,375 (243)

Snow Cover Duration in Northern Finland and the Influence of Key Variables Through a Conceptual Framework Based on Observed Variations in Snow Depth

Science of The Total Environment, 2023
Seasonal snow cover duration is the net result from many processes acting on snow fallen on the Earth's surface. Several of these processes feed back into the atmosphere-cryosphere system causing non-linear interactions. The timing of snow retreat is of essential importance, but the duration of snow cover has large spatiotemporal variabilities. However,
Johan, Ström, Jonas, Svensson, Hans, Moosmüller, Outi, Meinander, Aki, Virkkula, Antti, Hyvärinen, Eija, Asmi   +6 more
openaire   +2 more sources

Phylogenomic insights into the genus Tulipa (Liliaceae): Taxonomy, evolution, and biogeography

American Journal of Botany, EarlyView.
Abstract Premise Tulips are one of the best‐known geophytes, but their taxonomy remains convoluted and their evolutionary history poorly understood. Here, we used plastid genomes to identify some issues with current classification, understand the diversification history of the genus, and identify potential species linked to historical cultivation ...
Brett Wilson, Maarten J. M. Christenhusz, Nathanael Walker‐Hale, Natalya Beshko, Mariyo Boboev, Colin Clubbe, Davron Dekhkonov, Aibek Dolotbakov, Mehmet Firat, Thomas Freeth, Sjaak de Groot, Avni Hajdari, Georgy A. Lazkov, Ormon Sultangaziev, Komiljon S. Tojibaev, Ben J. M. Zonneveld, Kaiyrkul T. Shalpykov, Samuel F. Brockington   +17 more
wiley   +1 more source

Characteristics of the snow cover distribution on the coast of Lake Baikal

Лëд и снег, 2017
The paper presents results of studies of the dynamics of snow cover characteristics along the Lake Baikal coast for the years 1961–2009. Statistical characteristics of the following elements: snow depth, duration of the period with snow cover, dates of ...
P. P. Voropay, V. K. Vlasov
doaj   +1 more source

Hemiparasitic Castilleja presence is correlated with increased plant biodiversity across montane plant communities

American Journal of Botany, EarlyView.
Abstract Premise Root hemiparasites form haustoria in belowground roots of hosts to extract nutrients and water from the surrounding hosts. Through parasitic symbiosis, these plants disproportionately affect plant communities relative to their abundance by reducing host size, altering nutrient flow, and eventually increasing local biodiversity.
Jordan C. Argrett, Makena Lang, Anders Hastings, Y. Anny Chung, Nina Wurzburger, Charles F. Williams   +5 more
wiley   +1 more source

Change in snow phenology and its potential feedback to temperature in the Northern Hemisphere over the last three decades

Environmental Research Letters, 2013
Trends in the duration or extent of snow cover are expected to feedback to temperature trends. We analyzed trends in dates of onset and termination of snow cover in relation to temperature over the past 27 years (1980–2006) from over 636 meteorological ...
Shushi Peng, Shilong Piao, Philippe Ciais, Pierre Friedlingstein, Liming Zhou, Tao Wang   +5 more
doaj   +1 more source

Regional influence of ocean–atmosphere teleconnections on the timing and duration of MODIS-derived snow cover in British Columbia, Canada [PDF]

The Cryosphere, 2019
We use the twice-daily Moderate Resolution Imaging Spectroradiometer (MODIS) snow cover product to study the regional influence of the Oceanic Niño Index (ONI) and Pacific Decadal Oscillation (PDO) on snow cover in British Columbia (BC).
A. R. Bevington, A. R. Bevington, H. E. Gleason, V. N. Foord, W. C. Floyd, W. C. Floyd, H. P. Griesbauer   +6 more
doaj   +1 more source

Dynamic identification of snow phenology in the Northern Hemisphere [PDF]

The Cryosphere
Snow phenology characterizes the cyclical changes in snow and has become an important indicator of climate change in recent decades. Changes in snow phenology can significantly impact climate and hydrological conditions.
L. Wang, X. Miao, X. Hu, Y. Li, B. Qiu, J. Ge, W. Guo   +6 more
doaj   +1 more source

Variability in snow depth time series in the Adige catchment

Journal of Hydrology: Regional Studies, 2017
Study region: The Upper and Middle Adige catchment, Trentino-South Tyrol, Italy. Study focus: We provide evidence of changes in mean seasonal snow depth and snow cover duration in the region occurred in the period from 1980 to 2009.
Giorgia Marcolini, Alberto Bellin, Markus Disse, Gabriele Chiogna   +3 more
doaj   +1 more source

Postnatal craniomandibular growth in Harbor seals (Phoca vitulina vitulina)

The Anatomical Record, EarlyView.
Postnatal ontogeny in Harbor seals (Phoca vitulina vitulina). Cranium and mandible grow rapidly until 5 years of age, followed by a deceleration and finally a stagnation. Abstract As secondarily aquatic carnivores, seals display several phenotypic differences compared to their terrestrial relatives.
Elisabeth Steinbach, Julia Schaar, Christine Böhmer   +2 more
wiley   +1 more source

Methodological challenges in content‐based citation analysis: Expertise, reliability, and the primacy of citance identification

Journal of the Association for Information Science and Technology, EarlyView.
Abstract Content‐based citation analysis seeks to capture the meaning and functions of citations but continues to face unresolved methodological challenges. This study analyzes a stratified sample of library and information science publications to examine how citance segmentation and annotator expertise influence the consistency of classification ...
Zehra Taşkın
wiley   +1 more source