Abstract
Ecosystem respiration is a major component of the global terrestrial carbon cycle and is strongly influenced by temperature. The global extent of the temperature–ecosystem respiration relationship, however, has not been fully explored. Here, we test linear and threshold models of ecosystem respiration across 210 globally distributed eddy covariance sites over an extensive temperature range. We find thresholds to the global temperature–ecosystem respiration relationship at high and low air temperatures and mid soil temperatures, which represent transitions in the temperature dependence and sensitivity of ecosystem respiration. Annual ecosystem respiration rates show a markedly reduced temperature dependence and sensitivity compared to half-hourly rates, and a single mid-temperature threshold for both air and soil temperature. Our study indicates a distinction in the influence of environmental factors, including temperature, on ecosystem respiration between latitudinal and climate gradients at short (half-hourly) and long (annual) timescales. Such climatological differences in the temperature sensitivity of ecosystem respiration have important consequences for the terrestrial net carbon sink under ongoing climate change.
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Data availability
The data analysed during the current study are available on the FLUXNET website (https://fluxnet.fluxdata.org/data/fluxnet2015-dataset/) and are subject to data policy restrictions (https://fluxnet.org/data/data-policy). Summaries for each FLUXNET site are provided in Supplementary Data 1.
Code availability
The R code used for analysis during the current study is available on Zenodo (https://doi.org/10.5281/zenodo.4506798).
References
Cao, M. & Woodward, F. I. Dynamic responses of terrestrial ecosystem carbon cycling to global climate change. Nature 393, 249–252 (1998).
Heimann, M. & Reichstein, M. Terrestrial ecosystem carbon dynamics and climate feedbacks. Nature 451, 289–292 (2008).
Allen, A. P., Gillooly, J. F. & Brown, J. H. Linking the global carbon cycle to individual metabolism. Funct. Ecol. 19, 202–213 (2005).
Enquist, B. J. et al. Scaling metabolism from organisms to ecosystems. Nature 423, 639–642 (2003).
Gillooly, J. F., Brown, J. H., West, G. B., Savage, V. M. & Charnov, E. L. Effects of size and temperature on metabolic rate. Science 293, 2248–2251 (2001).
Brown, J. H., Gillooly, J. F., Allen, A. P., Savage, V. M. & West, G. B. Toward a metabolic theory of ecology. Ecology 85, 1771–1789 (2004).
Friedlingstein, P. et al. Uncertainties in CMIP5 climate projections due to carbon cycle feedbacks. J. Clim. 27, 511–526 (2014).
Davidson, E. A. & Janssens, I. A. Temperature sensitivity of soil carbon decomposition and feedbacks to climate change. Nature 440, 165–173 (2006).
Lenton, T. M. & Huntingford, C. Global terrestrial carbon storage and uncertainties in its temperature sensitivity examined with a simple model. Glob. Change Biol. 9, 1333–1352 (2003).
Song, B. et al. Divergent apparent temperature sensitivity of terrestrial ecosystem respiration. J. Plant Ecol. 7, 419–428 (2014).
Lloyd, J. & Taylor, J. A. On the temperature dependence of soil respiration. Funct. Ecol. 8, 315–323 (1994).
Mahecha, M. D. et al. Global convergence in the temperature sensitivity of respiration at ecosystem level. Science 329, 838–840 (2010).
Yvon-Durocher, G. et al. Reconciling the temperature dependence of respiration across timescales and ecosystem types. Nature 487, 472–476 (2012).
Johnston, A. S. A. & Sibly, R. M. The influence of soil communities on the temperature sensitivity of soil respiration. Nat. Ecol. Evol. 2, 1597–1602 (2018).
Dell, A. I., Pawar, S. & Savage, V. M. Systematic variation in the temperature dependence of physiological and ecological traits. Proc. Natl Acad. Sci. USA 108, 10591–10596 (2011).
Buckley, L. B. & Huey, R. B. Temperature extremes: geographic patterns, recent changes, and implications for organismal vulnerabilities. Glob. Change Biol. 22, 3829–3842 (2016).
Gill, A. L. & Finzi, A. C. Belowground carbon flux links biogeochemical cycles and resource-use efficiency at the global scale. Ecol. Lett. 19, 1419–1428 (2016).
Green, J. K. et al. Large influence of soil moisture on long-term terrestrial carbon uptake. Nature 565, 476–479 (2019).
Allison, S. D., Wallenstein, M. D. & Bradford, M. A. Soil-carbon response to warming dependent on microbial physiology. Nat. Geosci. 3, 336–340 (2010).
Michaletz, S. T., Cheng, D., Kerkhoff, A. J. & Enquist, B. J. Convergence of terrestrial plant production across global climate gradients. Nature 512, 39–43 (2014).
Pastorello, G. et al. The FLUXNET2015 dataset and the ONEFlux processing pipeline for eddy covariance data. Sci. Data 7, 225 (2020).
Monson, R. K. et al. Winter forest soil respiration controlled by climate and microbial community composition. Nature 439, 711–714 (2006).
Mauder, M. et al. A strategy for quality and uncertainty assessment of long-term eddy-covariance measurements. Agric. Meteorol. 169, 122–135 (2013).
Kim, D.-G., Vargas, R., Bond-Lamberty, B. & Turetsky, M. R. Effects of soil rewetting and thawing on soil gas fluxes: a review of current literature and suggestions for future research. Biogeosciences 9, 2459–2483 (2012).
Du, E. et al. Winter soil respiration during soil-freezing process in a boreal forest in Northeast China. J. Plant Ecol. 6, 349–357 (2013).
Schuur, E. A. et al. Climate change and the permafrost carbon feedback. Nature 520, 171–179 (2015).
Koven, C. D., Hugelius, G., Lawrence, D. M. & Wieder, W. R. Higher climatological temperature sensitivity of soil carbon in cold than warm climates. Nat. Clim. Change 7, 817–822 (2017).
Bond-Lamberty, B. P. & Thomson, A. M. A Global Database of Soil Respiration Data Version 4.0 (ORNL DAAC, 2018); https://doi.org/10.3334/ORNLDAAC/1578
Zhang, Z. et al. A temperature threshold to identify the driving climate forces of the respiratory process in terrestrial ecosystems. Eur. J. Soil Biol. 89, 1–8 (2018).
Yang, Y., Donohue, R. J., McVicar, T. R., Roderick, M. L. & Beck, H. E. Long-term CO2 fertilization increases vegetation productivity and has little effect on hydrological partitioning in tropical rainforests. J. Geophys. Res. Biogeosci. 121, 2125–2140 (2016).
Fleischer, K. et al. Amazon forest response to CO2 fertilization dependent on plant phosphorus acquisition. Nat. Geosci. 12, 736–741 (2019).
Padfield, D. et al. Metabolic compensation constrains the temperature dependence of gross primary production. Ecol. Lett. 20, 1250–1260 (2017).
Atkin, O. K. & Tjoelker, M. G. Thermal acclimation and the dynamic response of plant respiration to temperature. Trends Plant Sci. 8, 343–351 (2003).
Huntingford, C. et al. Implications of improved representations of plant respiration in a changing climate. Nat. Commun. 8, 1602 (2017).
Niu, S. et al. Thermal optimality of net ecosystem exchange of carbon dioxide and underlying mechanisms. New Phytol. 194, 775–783 (2012).
Rind, D. The consequences of not knowing low- and high-latitude climate sensitivity. Bull. Am. Meteorol. Soc. 89, 855–864 (2008).
Liu, Z. et al. Increased high-latitude photosynthetic carbon gain offset by respiration carbon loss during an anomalous warm winter to spring transition. Glob. Change Biol. 26, 682–696 (2020).
Haverd, V. et al. Higher than expected CO2 fertilization inferred from leaf to global observations. Glob. Change Biol. 26, 2390–2402 (2020).
Tagesson, T. et al. Recent divergence in the contributions of tropical and boreal forests to the terrestrial carbon sink. Nat. Ecol. Evol. 4, 202–209 (2020).
Climate Research Unit, University of East Anglia Average Annual Temperature. Atlas Biosphere (Center for Sustainability and the Global Environment, accessed 6 February 2020); https://nelson.wisc.edu/sage/data-and-models/atlas/maps.php
Acknowledgements
This work used eddy covariance data acquired and shared by the FLUXNET community and was supported by a Leverhulme Trust Research Project Grant (RPG-2017-071) and a Leverhulme Trust Research Leadership Award (RL-2019-012) to C.V. A.M. was supported by BBSRC (BB/S019952/1) and the Leverhulme Trust (RPG-2019-170), P.D.B. by the US Department of Energy Office of Science (7094866), D.B. by French Agence Nationale de la Recherche (ANR-10-LABX-25-01; ANR-11-LABX-0002-01), J.D. by the Ministry of Education, Youth and Sports of the Czech Republic (LM2015061), C.G. by a National Science Foundation Award (1655095) and A.V. by Russian Foundation for Basic Research project 19-04-01234-a. We also thank J. Baker, G. Butler and A. Navarro Campoy for helpful discussions.
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Contributions
A.S.A.J. and C.V. developed the methodology and led the writing of the manuscript. A.S.A.J. and A.M. conducted the data analysis. J.A., N.A., D.B., A.B., P.D.B., C.B., A.C., J.D., A.G., B.G., I.G., C.M.G., H.I., R.J., H.K., V.M., G.M., L.M., F.E.M., J.E.O., T.S., C.S., T.T., G.W., S.W., W.W. and A.V. contributed data. All authors contributed to manuscript revisions.
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Peer review information Nature Ecology & Evolution thanks Chris Huntingford and the other, anonymous, reviewer(s) for their contribution to the peer review of this work. Peer reviewer reports are available.
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Extended data
Extended Data Fig. 1 Short-term temperature and ecosystem respiration measurements in conventional units.
Night-time half-hourly ecosystem respiration measurements from the FLUXNET dataset (symbols, colours representing climate as in Fig. 2) for a) air and b) soil temperature. Plots show ecosystem respiration rates in mg C m−2 hr−1 and temperature in degrees Celsius units.
Extended Data Fig. 2 Identification of low frequency air temperature intervals.
Boxplot of the half-hourly ecosystem respiration measurements from the FLUXNET dataset (symbols, colours representing climate as in Fig. 2) presented in 5 °C air temperature intervals. Boxplots show median values (centre lines) and upper and lower quantiles, with black symbols representing outliers. Asterisks at the top indicate extreme high and low 5 °C temperature intervals with few measurements (< 1 % of the dataset, n < 235,521). The temperature intervals with asterisks (low frequency intervals) were removed from the dataset one by one as well as all together and the threshold model tested. The temperature breakpoints were robust to the removal of each temperature interval one by one but there was no support for a cold temperature breakpoint (−24.8 °C in Fig. 2b,c) when all low frequency intervals or all those < −19 °C were removed. A single temperature breakpoint emerged from the threshold model when all low frequency intervals were removed (Extended Data Fig. 3 and Supplementary Table 3).
Extended Data Fig. 3 Threshold model for ecosystem respiration rates and air temperature when all low frequency temperature intervals were removed.
Threshold model for half-hourly ecosystem respiration rates and air temperature when all low frequency temperature intervals shown in Extended Data Fig. 2 (identified by asterisks) were removed from the dataset. Threshold model predictions (solid line, for the fixed effects of temperature only in a) identified a single temperature threshold of 14.6 °C, with little support for a second temperature breakpoint (b, ΔAIC < 5 and p > 0.05). The dashed line in a indicate an activation energy of −7.50 K as predicted by metabolic theory and ΔAICs in b are between the linear and threshold model. Full details of the threshold mixed effects model are presented in Supplementary Table 3.
Extended Data Fig. 4 Correlation matrix between site variables and model goodness of fit.
Correlation matrix between FLUXNET site variables (latitude, maximum, minimum, mean and air temperature range (°C)) and the goodness of fit (adjusted r2) of the best performing model for predicting the temperature dependence of ecosystem respiration at the site level (threshold, n = 197; linear, n = 13; Supplementary Data 1).
Extended Data Fig. 5 Long-term temperature threshold for soil respiration.
Long-term temperature threshold for soil respiration (Rs), showing a) mean annual Rs from the global soil respiration database (symbols, colours representing climate as in Fig. 2) and the threshold model prediction (solid line, for the fixed effects of temperature only); and b) identification of a single temperature breakpoint of 5.5 °C, with little support for a second temperature breakpoint (ΔAIC < 5 and p > 0.05). Dashed lines indicate an activation energy of −7.50 K as predicted by metabolic theory and ΔAICs are between the linear and threshold model. Full details of the threshold mixed effects model are presented in Supplementary Table 6.
Supplementary information
Supplementary Information
Supplementary Tables 1–6.
Supplementary Data 1
Summary of the FLUXNET sites, indicating site names, latitude, climate, number of site years, mean air and soil temperature, ecosystem respiration rate and best fitting linear or threshold models at the site level.
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Johnston, A.S.A., Meade, A., Ardö, J. et al. Temperature thresholds of ecosystem respiration at a global scale. Nat Ecol Evol 5, 487–494 (2021). https://doi.org/10.1038/s41559-021-01398-z
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DOI: https://doi.org/10.1038/s41559-021-01398-z
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