Ramirez, J. A.; Craven, D.; Herrera-Ramirez, D.; Posada, J. M.; Reu, B.; Sierra, C. A.; Hoch, G.; Handa, I. T.; Messier, C.: Non-structural carbohydrate concentrations in tree organs vary across biomes and leaf habits, but are independent of the fast-slow plant economic spectrum. Frontiers in Plant Science 15, 1375958 (2024)
Muñoz, E.; Chanca, I.; González-Sosa, M.; Sarquis, A.; Tangarife-Escobar, A.; Sierra, C.: On the importance of time in carbon sequestration in soils and climate change mitigation. Global Change Biology 30 (3), e17229 (2024)
Tangarife-Escobar, A.; Guggenberger, G.; Feng, X.; Dai, G.; Urbina-Malo, C.; Azizi-Rad, M.; Sierra, C. A.: Moisture and temperature effects on the radiocarbon signature of respired carbon dioxide to assess stability of soil carbon in the Tibetan Plateau. Biogeosciences 21 (5), pp. 1277 - 1299 (2024)
Estupinan-Suarez, L. M.; Mahecha, M. D.; Brenning, A.; Kraemer, G.; Poveda, G.; Reichstein, M.; Sierra, C.: Spatial patterns of vegetation activity related to ENSO in Northern South America. Journal of Geophysical Research: Biogeosciences 129 (1), e2022JG007344 (2024)
Sierra, C.; Ahrens, B.; Bolinder, M. A.; Braakhekke, M. C.; von Fromm, S. F.; Kätterer, T.; Luo, Z.; Parvin, N.; Wang, G.: Carbon sequestration in the subsoil and the time required to stabilize carbon for climate change mitigation. Global Change Biology 30 (1), e17153 (2024)
Munoz, E.; Chanca, I.; Sierra, C.: Increased atmospheric CO2 and the transit time of carbon in terrestrial ecosystems. Global Change Biology 29 (23), pp. 6441 - 6452 (2023)
Eglinton, T. I.; Graven, H. D.; Raymond, P. A.; Trumbore, S. E.; Aluwihare, L.; Bard, E.; Basu, S.; Friedlingstein, P.; Hammer, S.; Lester, J.et al.; Sanderman, J.; Schuur, E. A. G.; Sierra, C. A.; Synal, H.-A.; Turnbull, J. C.; Wacker, L.: Making the case for an International Decade of Radiocarbon. Philosophical Transactions of the Royal Society of London - Series A: Mathematical Physical and Engineering Sciences 381 (2261), 20230081 (2023)
Munoz, E.; Sierra, C. A.: Deterministic and stochastic components of atmospheric CO2 inside forest canopies and consequences for predicting carbon and water exchange. Agricultural and Forest Meteorology 341, 109624 (2023)
Stoner, S.; Trumbore, S. E.; González-Pérez, J. A.; Schrumpf, M.; Sierra, C. A.; Hoyt, A. M.; Chadwick, O.; Doetterl, S.: Relating mineral–organic matter stabilization mechanisms to carbon quality and age distributions using ramped thermal analysis. Philosophical Transactions of the Royal Society of London - Series A: Mathematical Physical and Engineering Sciences 381 (2261), 20230139 (2023)
Stoner, S.; Schrumpf, M.; Hoyt, A. M.; Sierra, C. A.; Doetterl, S.; Galy, V.; Trumbore, S. E.: How well does ramped thermal oxidation quantify the age distribution of soil carbon? Assessing thermal stability of physically and chemically fractionated soil organic matter. Biogeosciences 20 (15), pp. 3151 - 3163 (2023)
Sarquis, A.; Sierra, C. A.: Information content in time series of litter decomposition studies and the transit time of litter in arid lands. Biogeosciences 20 (9), pp. 1759 - 1771 (2023)
Giraldo, J. A.; Valle, J. I. d.; González-Caro, S.; David, D. A.; Taylor, T.; Tobón, C.; Sierra, C. A.: Tree growth periodicity in the ever-wet tropical forest of the Americas. Journal of Ecology 111 (4), pp. 889 - 902 (2023)
Sierra, C. A.; Quetin, G. R.; Metzler, H.; Mueller, M.: A decrease in the age of respired carbon from the terrestrial biosphere and increase in the asymmetry of its distribution. Philosophical Transactions of the Royal Society of London - Series A: Mathematical Physical and Engineering Sciences 381 (2261), 20220200 (2023)
Wells, J. M.; Crow, S. E.; Sierra, C.; Deenik, J. L.; Carlson, K. M.; Meki, M. N.; Kiniry, J.: Edaphic controls of soil organic carbon in tropical agricultural landscapes. Scientific Reports 12, 21574 (2022)
Removing a tonne of CO2 from the air and thus undoing a tonne of emissions? Doesn't quite work, says a study. And provides four objections in view of Earth systems.
The new report by the Global Carbon Project shows: Fossil CO2 emissions will reach a record high in 2023. If emissions remain this high, the carbon budget that remains before reaching the 1.5°C limit will probably be used up in seven years. Although emissions from land use are decreasing slightly, they are still too high to be compensated by renewable forests and reforestation.
Storing carbon in the soil can help to mitigate climate change. Soil organic matter bound to minerals in particular can store carbon in the long term. A new study shows that the formation of mineral-associated organic matter depends primarily on the type of mineral, but is also influenced by land use and cultivation intensity.
The Deutsche Forschungsgemeinschaft (DFG) is to fund a Research Unit in the Jena Experiment for a further four years with around five million euros. The new focus is on the stabilising effect of biodiversity against extreme climate events such as heat, frost or heavy rainfall.
Carbon sinks on the land surface mitigate the greenhouse effect. An international team of scientists has now determined that the vast majority of Europe’s total above-ground carbon storage is provided by the forests of Eastern Europe. However, this carbon sink has declined, mainly due to changes in land use.
Dr. Ana Bastos, group leader at Max Planck Institute for Biogeochemistry in Jena, was awarded the Beutenberg Campus science award in the category „outstanding junior research scientist”.
The Global Carbon Project presents its new report on global greenhouse gas budget trends. For the current year, CO2 emissions are projected to be slightly higher than before the pandemic, only slightly below the 2019 peak. If emissions remain at this high level, stabilization of the climate and achievement of the Paris climate targets is questionable.
A new study reveals that surprisingly small increases in atmospheric CO2 lead to detectable effects on ecosystem functioning. Using simulations of the land surface model developed at the Max Planck Institute for Biogeochemistry, an international team of scientists finds that enhanced CO2 first affects entities of the carbon cycle such as vegetation productivity and the extension of leaf area.
Microorganisms in aquifers deep below the earth’s surface produce similar amounts of biomass as those in some marine waters. Applying a unique, ultra-sensitive measurement method using radioactive carbon, researchers were able to demonstrate for the first time that these biotic communities in absolute darkness do not depend on sunlight.
Microorganisms decompose falling leaves, thus improving soil quality and counteracting climate change. But how do these single-celled organisms coordinate their distribution of tasks? An international research team has investigated this hitherto poorly understood process.