Journal ArticleDOI
A generalized, bioclimatic index to predict foliar phenology in response to climate
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TLDR
The model appears sufficiently robust to reconstruct historical variation as well as to forecast future phenological responses to changing climatic conditions and is used to produce a global map that distinguishes major differences in regional phenological controls.Abstract:
The phenological state of vegetation significantly affects exchanges of heat, mass, and momentum between the Earth's surface and the atmosphere. Although current patterns can be estimated from satellites, we lack the ability to predict future trends in response to climate change. We searched the literature for a common set of variables that might be combined into an index to quantify the greenness of vegetation throughout the year. We selected as variables: daylength (photoperiod), evaporative demand (vapor pressure deficit), and suboptimal (minimum) temperatures. For each variable we set threshold limits, within which the relative phenological performance of the vegetation was assumed to vary from inactive (0) to unconstrained (1). A combined Growing Season Index (GSI) was derived as the product of the three indices. Ten-day mean GSI values for nine widely dispersed ecosystems showed good agreement (r>0.8) with the satellite-derived Normalized Difference Vegetation Index (NDVI). We also tested the model at a temperate deciduous forest by comparing model estimates with average field observations of leaf flush and leaf coloration. The mean absolute error of predictions at this site was 3 days for average leaf flush dates and 2 days for leaf coloration dates. Finally, we used this model to produce a global map that distinguishes major differences in regional phenological controls. The model appears sufficiently robust to reconstruct historical variation as well as to forecast future phenological responses to changing climatic conditions.read more
Citations
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Journal ArticleDOI
Shifting plant phenology in response to global change
TL;DR: Recent advances in several fields that have enabled scaling between species responses to recent climatic changes and shifts in ecosystem productivity are discussed, with implications for global carbon cycling.
Journal ArticleDOI
Climate change, phenology, and phenological control of vegetation feedbacks to the climate system
Andrew D. Richardson,Trevor F. Keenan,Mirco Migliavacca,Youngryel Ryu,Youngryel Ryu,Oliver Sonnentag,Oliver Sonnentag,Michael Toomey +7 more
TL;DR: In this paper, the authors discuss the environmental drivers of phenology, and the impacts of climate change on phenology in different biomes, and assess the potential impact on these feedbacks of shifts in phenology driven by climate change.
Journal ArticleDOI
Impacts of climate change on natural forest productivity – evidence since the middle of the 20th century
TL;DR: In this paper, the authors present a concise overview of the climate controls of forest production, provide evidence of how the main controls have changed in the last 55 years, and outline their findings of observed and documented impacts on forest productivity and a brief discussion of the complications of interpreting trends in net primary production.
Journal ArticleDOI
Plant phenology and global climate change: Current progresses and challenges
Shilong Piao,Shilong Piao,Qiang Liu,Anping Chen,Ivan A. Janssens,Yongshuo H. Fu,Yongshuo H. Fu,Junhu Dai,Lingli Liu,Xu Lian,Miaogen Shen,Xiaolin Zhu +11 more
TL;DR: It is suggested that future studies should primarily focus on using new observation tools to improve the understanding of tropical plant phenology, on improving process-based phenology modeling, and on the scaling of phenology from species to landscape-level.
Journal ArticleDOI
Influence of spring and autumn phenological transitions on forest ecosystem productivity
Andrew D. Richardson,T. Andy Black,Philippe Ciais,Nicolas Delbart,Mark A. Friedl,Nadine Gobron,David Y. Hollinger,Werner L. Kutsch,Bernard Longdoz,Sebastiaan Luyssaert,Sebastiaan Luyssaert,Mirco Migliavacca,Leonardo Montagnani,Leonardo Montagnani,J. William Munger,Eddy Moors,Shilong Piao,Corinna Rebmann,Markus Reichstein,Nobuko Saigusa,Enrico Tomelleri,Rodrigo Vargas,Andrej Varlagin +22 more
TL;DR: Investigation of relationships between phenology and productivity in temperate and boreal forests finds the productivity of evergreen needleleaf forests is less sensitive to phenology than is productivity of deciduous broadleaf forests, which has implications for how climate change may drive shifts in competition within mixed-species stands.
References
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Journal ArticleDOI
Terrestrial Ecoregions of the World: A New Map of Life on Earth
Book
Responses of plants to environmental stresses
TL;DR: In this article, the authors investigated the responses of plants to environmental stresses and found that plants respond to environmental stress in response to various types of stressors, such as drought and flooding.
Journal ArticleDOI
The NCEP–NCAR 50-Year Reanalysis: Monthly Means CD-ROM and Documentation
Robert Kistler,Eugenia Kalnay,William D. Collins,Suranjana Saha,Glenn H. White,John S. Woollen,Muthuvel Chelliah,Wesley Ebisuzaki,Masao Kanamitsu,Vernon E. Kousky,Huug van den Dool,Roy L. Jenne,M. Fiorino +12 more
TL;DR: The National Centers for Environmental Prediction (NCEP) and National Center for Atmospheric Research (NCAR) have cooperated in a project to produce a retroactive record of more than 50 years of global analyses of atmospheric fields in support of the needs of the research and climate monitoring communities as mentioned in this paper.
Journal ArticleDOI
Increased plant growth in the northern high latitudes from 1981 to 1991
TL;DR: In this paper, the authors present evidence from satellite data that the photosynthetic activity of terrestrial vegetation increased from 1981 to 1991 in a manner that is suggestive of an increase in plant growth associated with a lengthening of the active growing season.
Journal ArticleDOI
Climate-Driven Increases in Global Terrestrial Net Primary Production from 1982 to 1999
Ramakrishna R. Nemani,Charles D. Keeling,Hirofumi Hashimoto,Hirofumi Hashimoto,William M. Jolly,Stephen C. Piper,Compton J. Tucker,Ranga B. Myneni,Steven W. Running +8 more
TL;DR: It is indicated that global changes in climate have eased several critical climatic constraints to plant growth, such that net primary production increased 6% (3.4 petagrams of carbon over 18 years) globally.
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