Journal ArticleDOI
On the temperature dependence of soil respiration
Jon Lloyd,John Taylor +1 more
TLDR
An empirical equation is presented which yields an unbiased estimator of respiration rates over a wide range of temperatures and provides representative estimates of the seasonal cycle of net ecosystem productivity and its effects on atmospheric CO 2.Abstract:
From previously published measurements of soil respiration rate (R) and temperature (T) the goodness of fit of various R vs T relationships was evaluated. Exponential (Q 10 ) and conventional Arrhenius relationships between T and R cannot provide an unbiased estimate of respiration rate. Nor is a simple linear relationship appropriate. The relationship between R and T can, however, be accurately represented by an Arrhenius type equation where the effective activation energy for respiration varies inversely with temperature. An empirical equation is presented which yields an unbiased estimator of respiration rates over a wide range of temperatures. When combined with seasonal estimates of Gross Primary Productivity (GPP) the empirical relationship derived provides representative estimates of the seasonal cycle of net ecosystem productivity and its effects on atmospheric CO 2 (...)read more
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Book
Principles of Terrestrial Ecosystem Ecology
TL;DR: In this paper, the Ecosystem Concept is used to describe the Earth's Climate System and Geology and Soils, and the ecosystem concept is used for managing and sustaining ecosystems.
Journal ArticleDOI
On the Separation of Net Ecosystem Exchange into Assimilation and Ecosystem Respiration: Review and Improved Algorithm
Markus Reichstein,Eva Falge,Dennis D. Baldocchi,Dario Papale,Marc Aubinet,Paul Berbigier,Christian Bernhofer,Nina Buchmann,Nina Buchmann,Tagir G. Gilmanov,A. Granier,Thomas Grünwald,Katka Havránková,Hannu Ilvesniemi,Dalibor Janouš,Alexander Knohl,Alexander Knohl,Tuomas Laurila,Annalea Lohila,Denis Loustau,Giorgio Matteucci,Tilden P. Meyers,Franco Miglietta,Jean-Marc Ourcival,Jukka Pumpanen,Serge Rambal,Eyal Rotenberg,María José Sanz,John Tenhunen,G. Seufert,Francesco Primo Vaccari,Timo Vesala,Dan Yakir,Riccardo Valentini +33 more
TL;DR: In this paper, the authors analyse the effect of extrapolation of night-time values of ecosystem respiration into the daytime; this is usually done with a temperature response function that is derived from long-term data sets.
Journal ArticleDOI
Evaluation of ecosystem dynamics, plant geography and terrestrial carbon cycling in the LPJ dynamic global vegetation model
Stephen Sitch,Benjamin Smith,Iain Colin Prentice,Almut Arneth,Alberte Bondeau,Wolfgang Cramer,Jed O. Kaplan,Samuel Levis,Samuel Levis,Wolfgang Lucht,Martin T. Sykes,Kirsten Thonicke,Sergey Venevsky +12 more
TL;DR: The LPJ model as mentioned in this paper combines process-based, large-scale representations of terrestrial vegetation dynamics and land-atmosphere carbon and water exchanges in a modular framework, including feedback through canopy conductance between photosynthesis and transpiration and interactive coupling between these 'fast' processes and other ecosystem processes.
Journal ArticleDOI
Climate–Carbon Cycle Feedback Analysis: Results from the C4MIP Model Intercomparison
Pierre Friedlingstein,Peter M. Cox,Richard Betts,Laurent Bopp,W. von Bloh,Victor Brovkin,Patricia Cadule,Scott C. Doney,Michael Eby,Inez Fung,Govindasamy Bala,Jasmin John,Chris D. Jones,Fortunat Joos,Tomomichi Kato,Michio Kawamiya,Wolfgang Knorr,Keith Lindsay,H. D. Matthews,H. D. Matthews,Thomas Raddatz,Peter Rayner,Christian Reick,Erich Roeckner,K.-G. Schnitzler,Reiner Schnur,K. M. Strassmann,Andrew J. Weaver,Chisato Yoshikawa,Ning Zeng +29 more
TL;DR: In this article, eleven coupled climate-carbon cycle models were used to study the coupling between climate change and the carbon cycle. But, there was still a large uncertainty on the magnitude of these sensitivities.
Journal ArticleDOI
Nitrogen limitation of net primary productivity in terrestrial ecosystems is globally distributed.
TL;DR: The results suggest that the global N and C cycles interact strongly and that geography can mediate ecosystem response to N within certain biome types.
References
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Journal ArticleDOI
Climate change : the IPCC scientific assessment
TL;DR: A review of the intergovernmental panel on climate change report on global warming and the greenhouse effect can be found in this paper, where the authors present chemistry of greenhouse gases and mathematical modelling of the climate system.
Journal ArticleDOI
Model estimates of CO2 emissions from soil in response to global warming
TL;DR: In this article, the Rothamsted model is used to calculate the amount of CO2 that would be released from the world stock of soil organic matter if temperatures increase as predicted, the annual return of plant debris to the soil being held constant.
Journal ArticleDOI
Reaction kinetics of poikilotherm development.
TL;DR: A stochastic thermodynamic model of poikilotherm development has been derived from the Eyring equation assuming multiple activity states of the underlying developmental control enzymes and the resulting equation has been found applicable to a wide range of organisms.
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On the Separation of Net Ecosystem Exchange into Assimilation and Ecosystem Respiration: Review and Improved Algorithm
Markus Reichstein,Eva Falge,Dennis D. Baldocchi,Dario Papale,Marc Aubinet,Paul Berbigier,Christian Bernhofer,Nina Buchmann,Nina Buchmann,Tagir G. Gilmanov,A. Granier,Thomas Grünwald,Katka Havránková,Hannu Ilvesniemi,Dalibor Janouš,Alexander Knohl,Alexander Knohl,Tuomas Laurila,Annalea Lohila,Denis Loustau,Giorgio Matteucci,Tilden P. Meyers,Franco Miglietta,Jean-Marc Ourcival,Jukka Pumpanen,Serge Rambal,Eyal Rotenberg,María José Sanz,John Tenhunen,G. Seufert,Francesco Primo Vaccari,Timo Vesala,Dan Yakir,Riccardo Valentini +33 more