In Jena, it is traditional for newly graduated doctoral students to throw a wreath over the sword of Hanfried (statue of Johann Friedrich I of Saxony, the founder of the university) on the market square. The photo shows a wreath thrown high.

Publications of Jan Muhr

Journal Article (26)

1.
Journal Article
Helm, J.; Muhr, J.; Hilman, B.; Kahmen, A.; Schulze, E. D.; Trumbore, S. E.; Herrera-Ramirez, D.; Hartmann, H.: Carbon dynamics in long-term starving poplar trees—the importance of older carbohydrates and a shift to lipids during survival. Tree Physiology, tpad135 (2023)
2.
Journal Article
Herrera-Ramirez, D.; Hartmann, H.; Römermann, C.; Trumbore, S. E.; Muhr, J.; Maracahipes-Santos, L.; Brando, P.; Silvério, D.; Huang, J.; Kuhlmann, I. et al.; Sierra, C. A.: Anatomical distribution of starch in the stemwood influences carbon dynamics and suggests storage-growth trade-offs in some tropical trees. Journal of Ecology 111 (11), pp. 2532 - 2548 (2023)
3.
Journal Article
Helm, J.; Salomón, R. L.; Hilman, B.; Muhr, J.; Knohl, A.; Steppe, K.; Gibon, Y.; Cassan, C.; Hartmann, H.: Differences between tree stem CO2 efflux and O2 influx rates cannot be explained by internal CO2 transport or storage in large beech trees. Plant, Cell and Environment 46 (9), pp. 2680 - 2693 (2023)
4.
Journal Article
Helm, J.; Hartmann, H.; Göbel, M.; Hilman, B.; Herrera, D. A.; Muhr, J.: Low-cost chamber design for simultaneous CO2 and O2 flux measurements between tree stems and the atmosphere. Tree Physiology 41 (9), pp. 1767 - 1780 (2021)
5.
Journal Article
Hilman, B.; Muhr, J.; Helm, J.; Kuhlmann, I.; Schulze, E. D.; Trumbore, S. E.: The size and the age of the metabolically active carbon in tree roots. Plant, Cell and Environment 44 (8), pp. 2522 - 2535 (2021)
6.
Journal Article
Herrera-Ramirez, D.; Sierra, C.; Römermann, C.; Muhr, J.; Trumbore, S. E.; Silvério, D.; Brando, P. M.; Hartmann, H.: Starch and lipid storage strategies in tropical trees relate to growth and mortality. New Phytologist 230 (1), pp. 139 - 154 (2021)
7.
Journal Article
D’Andrea, E.; Rezaie, N.; Prislan, P.; Gričar, J.; Muhr, J.; Collalti, A.; Matteucci, G.: Frost and drought: Effects of extreme weather events on stem carbon dynamics in a Mediterranean beech forest. Plant, Cell and Environment 43 (10), pp. 2365 - 2379 (2020)
8.
Journal Article
Herrera-Ramirez, D.; Muhr, J.; Hartmann, H.; Roemermann, C.; Trumbore, S. E.; Sierra, C.: Probability distributions of nonstructural carbon ages and transit times provide insights into carbon allocation dynamics of mature trees. New Phytologist 26 (5), pp. 1299 - 1311 (2020)
9.
Journal Article
Schwab, V. F.; Nowak, M.; Elder, C. D.; Trumbore, S. E.; Xu, X.; Gleixner, G.; Lehmann, R.; Pohnert, G.; Muhr, J.; Kuesel, K. et al.; Totsche, K. U.: 14C-free carbon is a major contributor to cellular biomass in geochemically distinct groundwater of shallow sedimentary bedrock aquifers. Water Resources Research 55 (3), pp. 2104 - 2121 (2019)
10.
Journal Article
Schwab, V. F.; Nowak, M.; Trumbore, S. E.; Xu, X.; Gleixner, G.; Muhr, J.; Kuesel, K.; Totsche, K. U.: Isolation of individual saturated fatty acid methyl esters derived from groundwater phospholipids by preparative high-pressure liquid chromatography for compound-specific radiocarbon analyses. Water Resources Research 55 (3), pp. 2521 - 2531 (2019)
11.
Journal Article
D'Andrea, E.; Rezaie, N.; Battistelli, A.; Gavrichkova, O.; Kuhlmann, I.; Matteucci, G.; Moscatello, S.; Proietti, S.; Scartazza, A.; Trumbore, S. E. et al.; Muhr, J.: Winter's bite: beech trees survive complete defoliation due to spring late-frost damage by mobilizing old C reserves. New Phytologist 224 (2), pp. 625 - 631 (2019)
12.
Journal Article
Muhr, J.; Trumbore, S. E.; Higuchi, N.; Kunert, N.: Living on borrowed time – Amazonian trees use decade‐old storage carbon to survive for months after complete stem girdling. New Phytologist 220 (1), pp. 111 - 120 (2018)
13.
Journal Article
Hilman, B.; Muhr, J.; Trumbore, S. E.; Kunert, N.; Carbone, M. S.; Yuval, P.; Wright, S. J.; Moreno, G.; Pérez‑Priego, O.; Migliavacca, M. et al.; Carrara, A.; Grünzweig, J. M.; Osem, Y.; Weiner, T.; Angert, A.: Comparison of CO2 and O2 fluxes demonstrate retention of respired CO2 in tree stems from a range of tree species. Biogeosciences 16 (1), pp. 177 - 191 (2017)
14.
Journal Article
Muhr, J.; Messier, C.; Delagrange, S.; Trumbore, S. E.; Xu, X.; Hartmann, H.: How fresh is maple syrup? Sugar maple trees mobilize carbon stored several years previously during early springtime sap-ascent. New Phytologist 209 (4), pp. 1410 - 1416 (2016)
15.
Journal Article
Nowak, M.; Beulig, F.; von Fischer, J.; Muhr, J.; Küsel, K.; Trumbore, S. E.: Autotrophic fixation of geogenic CO2 by microorganisms contributes to soil organic matter formation and alters isotope signatures in a wetland mofette. Biogeosciences 12 (3), pp. 7169 - 7183 (2015)
16.
Journal Article
Trumbore, S. E.; Czimczik, C. I.; Sierra, C.; Muhr, J.; Xu, X.: Non-structural carbon dynamics and allocation relate to growth rate and leaf habit in California oaks. Tree Physiology 35 (11), pp. 1206 - 1222 (2015)
17.
Journal Article
Ahrens, B.; Reichstein, M.; Borken, W.; Muhr, J.; Trumbore, S. E.; Wutzler, T.: Bayesian calibration of a soil organic carbon model using delta14C measurements of soil organic carbon and heterotrophic respiration as joint constraints. Biogeosciences 11 (8), pp. 2147 - 2168 (2014)
18.
Journal Article
Krüger, I.; Muhr, J.; Hartl-Meier, C.; Schulz, C.; Borken, W.: Age determination of coarse woody debris with radiocarbon analysis and dendrochronological cross-dating. European Journal of Forest Research 133, pp. 931 - 939 (2014)
19.
Journal Article
Vicca, S.; Bahn, M.; Estiarte, M.; van Loon, E. E.; Vargas, R.; Alberti, G.; Ambus, P.; Arain, M. A.; Beier, C.; Bentley, L. P. et al.; Borken, W.; Buchmann, N.; Collins, S. L.; de Dato, G.; Dukes, J. S.; Escolar, C.; Fay, P.; Guidolotti, G.; Hanson, P. J.; Kahmen, A.; Kröel-Dulay, G.; Ladreiter-Knauss, T.; Larsen, K. S.; Lellei-Kovacs, E.; Lebrija-Trejos, E.; Maestre, F. T.; Marhan, S.; Marshall, M.; Meir, P.; Miao, Y.; Muhr, J.; Niklaus, P. A.; Ogaya, R.; Peñuelas, J.; Poll, C.; Rustad, L. E.; Savage, K.; Schindlbacher, A.; Schmidt, I. K.; Smith, A. R.; Sotta, E. D.; Suseela, V.; Tietema, A.; van Gestel, N.; van Straaten, O.; Wan, S.; Weber, U.; Janssens, I. A.: Can current moisture responses predict soil CO2 efflux under altered precipitation regimes? A synthesis of manipulation experiments. Biogeosciences 11 (11), pp. 2991 - 3013 (2014)
20.
Journal Article
Muhr, J.; Angert, A.; Negrón-Juárez, R. I.; Muñoz, W. A.; Kraemer, G.; Chambers, J. Q.; Trumbore, S. E.: Carbon dioxide emitted from live stems of tropical trees is several years old. Tree Physiology 33, pp. 743 - 752 (2013)
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