Results 121 to 130 of about 20,430 (260)

Impact of climatic change on alpine ecosystems: inference and prediction

Revue de Géographie Alpine, 2011
Alpine ecosystems will be greatly impacted by climatic change, but other factors, such as land use and invasive species, are likely to play an important role too. Climate can influence ecosystems at several levels.
Nigel G. Yoccoz, Anne Delestrade, Anne Loison   +2 more
doaj   +1 more source

Intercomparison of phenological transition dates derived from the PhenoCam Dataset V1.0 and MODIS satellite remote sensing [PDF]

, 2018
Phenology is a valuable diagnostic of ecosystem health, and has applications to environmental monitoring and management. Here, we conduct an intercomparison analysis using phenological transition dates derived from near-surface PhenoCam imagery and MODIS
Frolking, Stephen E., Hufkens, Koen, Milliman, Thomas E., Richardson, Andrew D.   +3 more
core   +1 more source

First assessment of the plant phenology index (PPI) for estimating gross primary productivity in African semi-arid ecosystems

, 2019
The importance of semi-arid ecosystems in the global carbon cycle as sinks for CO2 emissions has recently been highlighted. Africa is a carbon sink and nearly half its area comprises arid and semi-arid ecosystems.
Abdi, A. M., Ardo, J., Boke-Olen, N., Eklundh, L., Jin, H., Lehsten, V., Tagesson, T.   +6 more
core   +1 more source

Shaping future forests: how can ecophysiology support climate‐smart forest management?

New Phytologist, EarlyView.
Summary Climate change, particularly the associated increase in extreme events and disturbances, threatens the numerous environmental, social, and economic benefits that forests provide, both locally and globally. Heat and drought pose significant risks to forest ecosystems; the anticipated future climate is expected to exacerbate this trend ...
Arthur Gessler, José M. Grünzweig, Laura Bigio, Henrik Hartmann, Nate McDowell, Frank Krumm, Arun K. Bose, Andreas Rigling, Harald Bugmann, Valentina Vitali, Pascal Schneider, J. Jelle Lever, Janine Schweier, Anne Kempel, Niklaus E. Zimmermann, Philipp Brun, Jürgen Bauhus, Micah Wilhelm, Alessandra Bottero   +18 more
wiley   +1 more source

Dual Polarimetric Radar Vegetation Index for monitoring forest moisture stress using time series of Sentinel‐1 SAR data

Plant Biology, EarlyView.
This study demonstrates the potential of the Sentinel‐1 Dual Polarimetric Radar Vegetation Index, combined with climate variables and the Standardized Precipitation–Evapotranspiration Index, to effectively detect and monitor drought‐induced stress in temperate broadleaf deciduous forests.
B. Ranjit, W. Bijker, H. Aghababaei, A. Stein   +3 more
wiley   +1 more source

Recurrent hot droughts cause persistent legacy effects in a temperate Scots Pine forest

Plant Biology, EarlyView.
A series of hot drought events caused persistent legacy effects in a Scots Pine forest, with severe negative impacts on ecosystem carbon fluxes. Abstract Recent hot‐dry events have caused significant impacts and legacy effects in temperate ecosystems. Here, we investigate legacy effects of the 2018 hot drought on a Pinus sylvestris L.
S. Haberstroh, A. Christen, M. Sulzer, F. Scarpa, C. Werner   +4 more
wiley   +1 more source

Phenology, growth, and fecundity of eight subarctic tundra species in response to snowmelt manipulations [PDF]

, 2018
The snow cover extent is an important factor for the structure and composition of arctic and alpine tundra communities. Over the last few decades, snowmelt in many arctic and alpine regions has advanced, causing the growing season to start earlier and ...
Wipf, Sonja
core  

Changing Aerodynamic Roughness in WRF Reduces Bias and Improves Accuracy in Near‐Surface Wind Simulations

Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.
Abstract Accurate simulation of near‐surface wind speed is crucial for applications in renewable energy, dust emission, and air quality modeling. However, the Weather Research and Forecasting (WRF) model systematically over‐estimates 10 m wind speed due to simplified representations of surface roughness and momentum exchange.
Hongquan Song, Xueli Ni, Yujie Chang, Adrian Chappell, Zhuoli Zhou, Boyan Liu   +5 more
wiley   +1 more source

Phenology and carbon dioxide source/sink strength of a subalpine grassland in response to an exceptionally short snow season

Environmental Research Letters, 2013
Changes in snow cover depth and duration predicted by climate change scenarios are expected to strongly affect high-altitude ecosystem processes. This study investigates the effect of an exceptionally short snow season on the phenology and carbon dioxide
M Galvagno, G Wohlfahrt, E Cremonese, M Rossini, R Colombo, G Filippa, T Julitta, G Manca, C Siniscalco, U Morra di Cella, M Migliavacca   +10 more
doaj   +1 more source

Green-Up Protocol [PDF]

, 2003
The purpose of this resource is to observe plant green-up and report data that will be used by scientists to validate satellite estimates of the beginning of the plant growing season.
The GLOBE Program, University Corporation for Atmospheric Research (UCAR)
core