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
TLDR
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.Abstract:
We use eddy covariance measurements of net ecosystem productivity (NEP) from 21 FLUXNET sites (153 site-years of data) to investigate relationships between phenology and productivity (in terms of both NEP and gross ecosystem photosynthesis, GEP) in temperate and boreal forests. Results are used to evaluate the plausibility of four different conceptual models. Phenological indicators were derived from the eddy covariance time series, and from remote sensing and models. We examine spatial patterns (across sites) and temporal patterns (across years); an important conclusion is that it is likely that neither of these accurately represents how productivity will respond to future phenological shifts resulting from ongoing climate change. In spring and autumn, increased GEP resulting from an 'extra' day tends to be offset by concurrent, but smaller, increases in ecosystem respiration, and thus the effect on NEP is still positive. Spring productivity anomalies appear to have carry-over effects that translate to productivity anomalies in the following autumn, but it is not clear that these result directly from phenological anomalies. Finally, the productivity of evergreen needleleaf forests is less sensitive to phenology than is productivity of deciduous broadleaf forests. This has implications for how climate change may drive shifts in competition within mixed-species stands.read more
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Long-term trend in vegetation gross primary production, phenology and their relationships inferred from the FLUXNET data.
TL;DR: This study is helpful to understand changes in phenology and carbon uptake and their differences among different vegetation types and provides a potential way for predicting annual rate of change in carbon uptake through vegetation photosynthesis at a global scale.
Journal ArticleDOI
Climate change imposes phenological trade‐offs on forest net primary productivity
TL;DR: In this paper, the role of future climate change on phenological tradeoffs and how they affect net primary productivity (NPP) at regional scales in temperate forests remains unexplored.
Journal ArticleDOI
Altitude-dependent influence of snow cover on alpine land surface phenology
Jing Xie,Mathias Kneubühler,Irene Garonna,Claudia Notarnicola,Ludovica De Gregorio,Rogier de Jong,Barbara Chimani,Michael E. Schaepman +7 more
TL;DR: In this paper, the authors studied the effect of snow cover on alpine land surface phenology in the European Alps using satellite-derived metrics, namely, first snow fall, last snow day, and snow cover duration (SCD), in combination with land surface morphology (LSP) for the period of 2003-2014.
Journal ArticleDOI
Delayed autumn leaf senescence date prolongs the growing season length of herbaceous plants on the Qinghai-Tibetan Plateau
TL;DR: It was mainly the delayed LSD, rather than an advanced GUD, that prolonged GSL of QTP herbaceous plants, which was contrary to the prevailing conclusion reported by studies based on remote sensing data.
Journal ArticleDOI
Increases in heat-induced tree mortality could drive reductions of biomass resources in Canada’s managed boreal forest
Emeline Chaste,Emeline Chaste,Martin P. Girardin,Martin P. Girardin,Jed O. Kaplan,Jed O. Kaplan,Yves Bergeron,Yves Bergeron,Christelle Hély,Christelle Hély +9 more
TL;DR: In this paper, the authors investigate how anticipated climate change in coming decades could trigger abrupt changes in the biomass of dominant species in Canada's boreal forests, including needleleaf evergreen (softwood) to broadleaf deciduous (hardwood) taxa.
References
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FLUXNET: A New Tool to Study the Temporal and Spatial Variability of Ecosystem-Scale Carbon Dioxide, Water Vapor, and Energy Flux Densities
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TL;DR: The FLUXNET project as mentioned in this paper is a global network of micrometeorological flux measurement sites that measure the exchanges of carbon dioxide, water vapor, and energy between the biosphere and atmosphere.
FLUXNET: A New Tool to Study the Temporal and Spatial Variability of Ecosystem-Scale Carbon Dioxide, Water Vapor, and Energy Flux Densities
Dennis D. Baldocchi,Eva Falge,Lianhong Gu,Richard J. Olson,David Y. Hollinger,Steven W. Running,P. M. Anthoni,Christian Bernhofer,Kenneth J. Davis,Robert G. Evans +9 more
Journal ArticleDOI
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Shifting plant phenology in response to global change
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