Claudia Kammann

Prof. Dr. Claudia Kammann

Function: Deputy Head
Organizational Unit(s):Department of Applied EcologyProfessorship for Research into Climatic Effects on Special Crops
Contact:
Phone: +49 6722 502 755
eMail: Claudia.Kammann(at)hs-gm.de
Postal Address:Von-Lade-Straße 1
D-65366 Geisenheim
Address: Building 6101
Room 00.04
Von-Lade-Straße 2
65366 Geisenheim
Publications
Strub L., Wittke M., Trommsdorff M., Stoll M., Kammann C., Loose S. (2024): Assessing the economic performance of agrivoltaic systems in vineyards – framework development, simulated scenarios and directions for future research. Frontiers in Horticulture 3 S. 1 - 18. DOI: 10.3389/fhort.2024.1473072
Wefers W.M., Lehnert L.W., Schmidt D., Reuter M., Buchwitz M., Kammann C., Velten K., Hase F., Notholt J., Kubistin D., Mueller-Williams J., Lindauer M. (2023): Approximation of multi-year time series of XCO2 concentrations using satellite observations and statistical interpolation methods. Atmospheric Research 294 DOI: 10.1016/j.atmosres.2023.106965
Khalid A.R., Shah T., Asad M., Ali A., Samee E., Adnan F., Bhatti M.F., Marhan S., Kammann C.I., Haider G. (2023): Biochar alleviated the toxic effects of PVC microplastic in a soil-plant system by upregulating soil enzyme activities and microbial abundance. Environmental pollution 332 DOI: 10.1016/j.envpol.2023.121810
Wagner M., Stanbury P., Dietrich T., Döring J., Ewert J., Foerster C., Freund M., Friedel M., Kammann C., Koch M., Owtram T., Schultz H.R., Voss-Fels K., Hanf J. (2023): Developing a Sustainability Vision for the Global Wine Industry. Sustainability 15 (13) DOI: 10.3390/su151310487
Garstka L., Jouaux D., Stoll M., Kammann C. (2023): Doppelter Nutzen. Der deutsche Weinbau 2023 (6) S. 32 - 34.
Görres C.-M., Kammann C. (2020): First field estimation of greenhouse gas release from European soil-dwelling Scarabaeidae larvae targeting the genus Melolontha. PLOS ONE 15 (8) DOI: 10.1371/journal.pone.0238057
Haider G., Joseph S., Steffens D., Müller C., Sarasadat T., Mitchell D., Kammann C.I. (2020): Mineral nitrogen captured in field-aged biochar is plant-available. Scientific Reports 10 DOI: 10.1038/s41598-020-70586-x
Amirahmadi E., Mohammad Hojjati S., Kammann C., Ghorbani M., Biparva P. (2020): The Potential Effectiveness of Biochar Application to Reduce Soil Cd Bioavailability and Encourage Oak Seedling Growth. Applied Sciences 10 (10) DOI: 10.3390/app10103410
Fuertes-Mendizábal T., Huérfano X., Vega-Mas I., Torralbo F., Menéndez S., Ippolito J.A., Kammann C., Wrage-Mönnig N., Cayuela M.L., Borchard N., Spokas K., Novak J., González-Moro M.B., González-Murua C., Estavillo J.M. (2019): Biochar reduces the efficiency of nitrification inhibitor 3,4-dimethylpyrazole phosphate (DMPP) mitigating N2O emissions. Scientific Reports 9 DOI: 10.1038/s41598-019-38697-2
Borchard N., Schirrmann M., Cayuela M.L., Kammann C., Wrage-Mönnig N., Estavillo J.M., Fuertes-Mendizábal T., Gilbert S., Spokas K., Ippolito J.A., Novak J. (2019): Biochar, soil and land-use interactions that reduce nitrate leaching and N2O emissions: A meta-analysis. Science of the Total Environment 651 S. 2354 - 2364. DOI: 10.1016/j.scitotenv.2018.10.060
Dieguez-Alonso A., Anca-Couce A., Fristak V., Moreno-Jimenez E., Bacher M., Bucheli T.D., Cimo G., Conte P., Hagemann N., Haller A., Hilber I., Husson O., Kammann C., Kienzl N., Leifeld J., Rosenau T., Soja G., Schmidt H.P. (2019): Designing biochar properties through the blending of biomass feedstock with metals: Impact on oxyanions adsorption behavior. Chemosphere 214 S. 743 - 753. DOI: 10.1016/j.chemosphere.2018.09.091
Smith P., Adams J., Beerling D.J., Beringer T., Calvin K.V., Fuss S., Griscom B., Hagemann N., Kammann C., Kraxner F., Minx J.C., Popp A., Renforth P., Vicente J.L.V., Keesstra S. (2019): Impacts of Land-Based Greenhouse Gas Removal Options on Ecosystem Services and the United Nations Sustainable Development Goals. Annual Review of Environment and Resources 44 S. 255 - 286. DOI: 10.1146/annurev-environ-101718-033129
Schmidt H.-P., Anca-Couce A., Hagemann N., Werner C., Gerten D., Lucht W., Kammann, C. (2019): Pyrogenic Carbon Capture & Storage (PyCCS). Global change biology. Bioenergy 11 (4) S. 573 - 591. DOI: 10.1111/gcbb.12553
Schmidt H.-P., Hagemann N., Draper K., Kammann C. (2019): The use of biochar in animal feeding. PeerJ 7 DOI: 10.7717/peerj.7373
Werner C., Schmidt H.P., Gerten D., Lucht W., Kammann C. (2018): Biogeochemical potential of biomass pyrolysis systems for limiting global warming to 1.5 degrees C. Environmental Research Letters 13 (4) DOI: 10.1088/1748-9326/aabb0e
Andresen L.C., Yuan N., Seibert R., Moser G., Kammann C., Luterbacher J., Erbs M., Müller C. (2018): Biomass responses in a temperate European grassland through 17 years of elevated CO2. Global Change Biology 24 S. 3875 - 3885. DOI: 10.1111/gcb.13705
Joseph S., Kammann C., Shepherd J.G., Conte P., Schmidt H.P., Hagemann N., Rich A.M., Marjo C.E., Allen J., Munroe P., Mitchell D.R.G, Donne S., Spokas K., Graber E.R. (2018): Microstructural and associated chemical changes during the composting of a high temperature biochar: Mechanisms for nitrate, phosphate and other nutrient retention and release. Science of the Total Environment 618 S. 1210 - 1223. DOI: 10.1016/j.scitotenv.2017.09.200
Kammann C., Ippolito J., Hagemann N., Borchard N., Cayuela M.L., Estavillo J.M., Fuertes-Mendizabal T., Jeffery S., Kern J., Novak J., Rasse D., Saarnio S., Schmidt H.P., Spokas K., Wrage-Monnig N. (2017): Biochar as a tool to reduce the agricultural greenhouse-gas burden - knowns, unknowns and future research needs. Journal of Environmental Engineering and Landscape Management 25 (2) S. 114 - 139. DOI: 10.3846/16486897.2017.1319375
Haider G., Steffens D., Moser G., Muller C., Kammann C.I. (2017): Biochar reduced nitrate leaching and improved soil moisture content without yield improvements in a four-year field study. Agriculture, Ecosystems and Environment 237 S. 80 - 94. DOI: 10.1016/j.agee.2016.12.019
Mehmood K., Garcia E.C., Schirrmann M., Ladd B., Kammann C., Wrage-Monnig N., Siebe C., Estavillo J.M., Fuertes-Mendizabal T., Cayuela M., Sigua G., Spokas K., Cowie A.L., Novak J., Ippolito J.A., Borchard N. (2017): Biochar research activities and their relation to development and environmental quality. A meta-analysis. Agronomy for Sustainable Development 37 (3) DOI: 10.1007/s13593-017-0430-1
Schmidt H.P., Pandit B.H., Cornelissen G., Kammann C. (2017): Biochar-Based Fertilization With Liquid Nutrient Enrichment: 21 Field Trials Covering 13 Crop Species In Nepal. Land Degradation and Development 28 S. 2324 - 2342. DOI: 10.1002/ldr.2761
Tammeorg P., Bastos A.C., Jeffery S., Rees F., Kern J., Graber E.R., Ventura M., Kibblewhite M., Amaro A., Budai A., Cordovil C.M.D.S., Domene X., Gardi C., Gasco G., Horak J., Kammann C., Kondrlova E., Laird D., Loureiro S., Martins M.A.S., Panzacchi P., Prasad M., Prodana M., Puga A.P., Ruysschaert G., Sas-Paszt L., Silva F.C., Teixeira W.G., Tonon G., Delle Vedove G., Zavalloni C., Glaser B., Verheijen F.G.A. (2017): Biochars in soils: Towards the required level of scientific understanding. Journal of Environmental Engineering and Landscape Management 25 (2) S. 192 - 207. DOI: 10.3846/16486897.2016.1239582
Schimmelpfennig S., Kammann C., Mumme J., Marhan S., Bamminger C., Moser G., Müller C. (2017): Degradation of Miscanthus x giganteus biochar, hydrochar and feedstock under the influence of disturbance events. Applied Soil Ecology 113 S. 135 - 150. DOI: 10.1016/j.apsoil.2017.01.006
Glaser B., Baltrenas P., Kammann C., Kern J., Baltrenaite E. (2017): Editorial: special issue on biochar as an option for sustainable resource management (EU COST Action TD1107 final publication). Vilnius Gediminas Technical University / Taylor & Francis S. 83 - 85. DOI: 10.3846/16486897.2017.1319376
Schmidt H.-P., Pandit B.P., Kammann C., Taylor P. (2017): Forest Gardens for Closing the Global Carbon Cycle. the Biochar Journal S. 48 - 61.
Hagemann N., Kammann C.I., Schmidt H.P., Kappler A., Behrens S. (2017): Nitrate capture and slow release in biochar amended compost and soil. PLOS ONE 12 (2) DOI: 10.1371/journal.pone.0171214
Hagemann N., Joseph S., Schmidt H.P., Kammann C., Harter J., Borch T., Young R.B., Varga K., Taherymoosavi S., Elliott K.W., McKenna A., Albu M., Mayrhofer C., Obst M., Conte P., Dieguez-Alonso A., Orsetti S., Subdiaga E., Behrens S., Kappler A. (2017): Organic coating on biochar explains its nutrient retention and stimulation of soil fertility. Nature Communications 8 DOI: 10.1038/s41467-017-01123-0
Obermeier W.A., Lehnert L.W., Kammann C.I., Muller C., Grunhage L., Luterbacher J., Erbs M., Moser G., Seibert R., Yuan N., Bendix J. (2017): Reduced CO2 fertilization effect in temperate C3 grasslands under more extreme weather conditions. Nature Climate Change 7 S. 137 - 141. DOI: 10.1038/NCLIMATE3191
Brenzinger K., Kujala K., Horn M.A., Moser G., Guillet C., Kammann C., Müller C., Braker G. (2017): Soil Conditions Rather Than Long-Term Exposure to Elevated CO2 Affect Soil Microbial Communities Associated with N-Cycling. Frontiers in Microbiology 8 DOI: 10.3389/fmicb.2017.01976
Kammann C., Ratering S., Görres C.-M., Guillet C., Müller C. (2017): Stimulation of methane oxidation by CH4-emitting rose chafer larvae in well-aerated grassland soil. Biology and Fertility of Soils 53 (5) S. 491 - 499. DOI: 10.1007/s00374-017-1199-8
Kern J., Tammeorg P., Shanskiy M., Sakrabani R., Knicker H., Kammann C., Tuhkanen EM., Smidt G., Prasad M., Tiilikkala K., Sohi S., Gasco G., Steiner C., Glaser B. (2017): Synergistic use of peat and charred material in growing media – an option to reduce the pressure on peatlands?. Journal of Environmental Engineering and Landscape Management 25 (2) S. 160 - 174. DOI: 10.3846/16486897.2017.1284665
Frenkel O., Jaiswal A.K., Elad Y., Lew B., Kammann C., Graber E.R. (2017): The effect of biochar on plant diseases: what should we learn while designing biochar substrates?. Journal of Environmental Engineering and Landscape Management 25 (2) S. 105 - 113. DOI: 10.3846/16486897.2017.1307202
Görres C.-M., Kammann C.I., Ceulemans R. (2016): Automation of soil flux chamber measurements: potentials and pitfalls. Biogeosciences 13 (6) S. 1949 - 1966. DOI: 10.5194/bg-13-1949-2016
Jeffery S., Verheijen F.G.A., Kammann C., Abalos D. (2016): Biochar effects on methane emissions from soils: A meta-analysis. Soil Biology and Biochemistry 101 S. 251 - 258. DOI: 10.1016/j.soilbio.2016.07.021
Bouqbis L., Daoud S., Koyro H.-W., Kammann C.I., AinlhoutL.F.Z., Harrouni M.C. (2016): Biochar from Argan shells: production and characterization. International Journal Of Recycling of Organic Waste in Agriculture 5 (4) S. 361 - 365. DOI: 10.1007/s40093-016-0146-2
Klostermann H., Kammann C., Zinkernagel J., Kahlen K. (2016): Climate change impact research for vegetable crops - Veggie - FACE. S. 59
Kammann C.I., Glaser B., Schmidt H.-P. (2016): Combining Biochar and Organic Amendments. 978-0-415-71166-1
O'Toole A., Andersson D., Gerlach A., Glaser B., Kammann C.I., Kern J., Kuoppamäki K., Mumme J., Schmidt H.-P., Schulze M., Srocke F., Stenrod M., Stenström J. (2016): Current and future applications for biochar. 978-0-415-71166-1
Quicker P., Kammann C., Sager C., Weber K. (2016): Einführung. 978-3-658-03688-1
Klostermann H., Kammann C., Kahlen K. (2016): Predictability of field vegetable response to elevated CO2. S. 58 - 58.
Lenhart K., Kammann C.I., Boeckx P., Six J., Müller C. (2016): Quantification of ecosystem C dynamics in a long-term FACE study on permanent grassland. Rapid Communications in Mass Spectrometry 30 (7) S. 963 - 972. DOI: 10.1002/rcm.7515
Haider G., Steffens D., Müller C., Kammann C.I. (2016): Standard Extraction Methods May Underestimate Nitrate Stocks Captured by Field-Aged Biochar. Journal of Environmental Quality 45 (4) S. 1196 - 1204. DOI: 10.2134/jeq2015.10.0529
Weber K., Eichenauer S., Stadlbauer E., Schulten M.-A., Echterhof T., Kammann C., Schmidt H.-P., Gerlach A., Gerlach, H. (2016): Verwendung von Biomasse-Karbonisaten. 978-3-658-03688-1
Steiner C., Sánchez-Monedero M.A., Kammann C. (2015): Biochar as an additive to compost and growing media. 978-0-415-70415-1
Haider G., Koyro H.-W., Azam F., Steffens D., Müller C., Kammann C. (2015): Biochar but not humic acid product amendment affected maize yields via improving plant-soil moisture relations. Plant and Soil 395 (1-2) S. 141 - 157. DOI: 10.1007/s11104-014-2294-3
van Zwieten L., Kammann C., Cayuela M., Singh B.P., Joseph S., Kimber S., Donne S., Clough T., Spokas K. (2015): Biochar effects on nitrous oxide and methane emissions from soil. 978-0-415-70415-1
Kammann C., Graber E. (2015): Biochar effects on plant ecophysiology. 978-0-415-70415-1
Haworth M., Moser G., Raschi A., Kammann C.I., Grünhage L., Müller C. (2015): Carbon dioxide fertilisation and supressed respiration induce enhanced spring biomass production in a mixed species temperate meadow exposed to moderate carbon dioxide enrichment. Functional Plant Biology 43 (1) S. 26 - 39. DOI: 10.1071/FP15232
Schimmelpfennig S., Kammann C., Moser G., Grünhage L., Müller C. (2015): Changes in macro- and micronutrient contents of grasses and forbs following Miscanthus x giganteus feedstock, hydrochar and biochar application to temperate grassland. Grass and Forage Science 70 (4) S. 582 - 599. DOI: 10.1111/gfs.12158
Feng Z., Rütting T., Pleijel H., Wallin G., Reich P.B., Kammann C., Newton P.C.D., Kobayashi K., Luo Y., Uddling J. (2015): Constraints to nitrogen acquisition of terrestrial plants under elevated CO2. Global Change Biology 21 (8) S. 3152 - 3168. DOI: 10.1111/gcb.12938
Subedi R., Kammann C., Pelissetti S., Taupe N., Bertora C., Monaco S., Grignani C. (2015): Does soil amended with biochar and hydrochar reduce ammonia emissions following the application of pig slurry?. European Journal of Soil Science 66 (6) S. 1044 - 1053. DOI: 10.1111/ejss.12302
Karbin S., Guillet C.I., Kammann C., Niklaus P. (2015): Effects of long-term CO2 enrichment on soil-atmosphere CH4 fluxes and the spatial micro-distribution of methanotrophic bacteria. PLOS ONE 10 (7) DOI: 10.1371/journal.pone.0131665
Guillet C., Kammann C., Andresen L.C., Karbin S., Niklaus P.A., Müller C. (2015): Episodic high CH4 emission events can damage the potential of soils to act as CH4 sink: evidence from 17 years of CO2 enrichment in a temperate grassland ecosystem. Elsevier S. 208 - 209. DOI: 10.1016/j.proenv.2015.07.265
Schmidt H.P., Pandit B.H., Martinsen V., Cornelissen G., Conte P., Kammann C.I. (2015): Fourfold increase in pumpkin yield in response to low-dosage root zone application of urine-enhanced biochar to a fertile tropical soil. Agriculture 5 (3) S. 723 - 741. DOI: 10.3390/agriculture5030723
Kammann C, Guillet C, Andresen L, Moser G, Grunhage L, Muller C (2015): Increasing N2O emissions under long-term (11 year) free-air CO2 enrichment counterbalance biomass growth stimulation: A carbon balance approach. Elsevier S. 168 - 170. DOI: 10.1016/j.proenv.2015.07.243
Rex D., Schimmelpfennig S., Jansen-Willems A., Moser G., Kammann C.I., Müller C. (2015): Microbial community shifts 2.6 years after top dressing of Miscanthus biochar, hydrochar and feedstock on a temperate grassland site. Plant and Soil 397 (1-2) S. 261 - 271. DOI: 10.1007/s11104-015-2618-y
Kammann C.I., Schmidt H.-P., Messerschmidt N., Linsel S., Steffens D., Müller C., Koyro H.-W., Conte P., Joseph S. (2015): Plant growth improvement mediated by nitrate capture in co-composted biochar. Scientific Reports 5 DOI: 10.1038/srep11080
Keidel L., Kammann C., Grünhage L., Moser G., Müller C. (2015): Positive feedback of elevated CO2 on soil respiration in late autumn and winter. Biogeosciences 12 (4) S. 1257 - 1269. DOI: 10.5194/bg-12-1257-2015
Andresen L.C., Yuan N., Luterbacher J., Moser G., Müller C., Grunhage L., Kammann C. (2015): Responses of a grassland ecosystem to 17 years of free-air CO2 enrichment. Elsevier S. 158 - 159. DOI: 10.1016/j.proenv.2015.07.238
Schmidt H.-P., Kammann C., Niggli C., Evangelou M.W.H., Mackie K., Abiven S. (2014): Biochar and biochar-compost as soil amendments to a vineyard soil: Influences on plant growth, nutrient uptake, plant health and grape quality. Agriculture, Ecosystems and Environment 191 S. 39 - 52. DOI: 10.1016/j.agee.2014.04.001
Schimmelpfennig S., Müller C., Grünhage L., Koch C., Kammann C. (2014): Biochar, hydrochar and uncarbonized feedstock application to permanent grassland - effects on greenhouse gas emissions and plant growth. Agriculture, Ecosystems and Environment 191 S. 39 - 52. DOI: 10.1016/j.agee.2014.03.027
Bamminger C., Zaiser N., Zinsser P., Lamers M., Kammann C., Marhan S. (2014): Effects of biochar, earthworms, and litter addition on soil microbial activity and abundance in a temperate agricultural soil. Biology and Fertility of Soils 50 (8) S. 1189 - 1200. DOI: 10.1007/s00374-014-0968-x
Clough T.J., Condron L.M., Kammann C., Müller C. (2013): A Review of Biochar and Soil Nitrogen Dynamics. Agronomy 3 (2) S. 275 - 293. DOI: 10.3390/agronomy3020275
Bai M., Wilske B., Buegger F., Esperschütz J., Kammann C., Eckhard C., Koestler M., Kraft P., Bach M., Frede H.-G., Breuer L. (2013): Degradation kinetics of biochar from pyrolysis and hydrothermal carbonization in temperate soils. Plant and Soil 372 (1-2) S. 375 - 387. DOI: 10.1007/s11104-013-1745-6
Cao X., Ro K.S., Libra J. A., Kammann C., Lima I., Berge N., Li L., Li Y., Chen N., Yang J., Deng B., Mao J. (2013): Effects of Biomass Types and Carbonization Conditions on the Chemical Characteristics of Hydrochars. Journal of Agricultural and Food Chemistry 61 (39) S. 9401 - 9411. DOI: 10.1021/jf402345k
Berge N.D., Kammann C., Ro K., Libra J. (2013): Environmental Applications of Hydrothermal Carbonization Technology: Biochar Production, Carbon Sequestration, and Waste Conversion. 978-1-11-997539-7
Busch D., Stark A., Kammann C., Glaser B. (2013): Genotoxic and phytotoxic risk assessment of fresh and treated hydrochar from hydrothermal carbonization compared to biochar from pyrolysis. Ecotoxicology and Environmental Safety 97 S. 59 - 66. DOI: 10.1016/j.ecoenv.2013.07.003
Kammann C. (2013): Moving forward from 'biochar revolution' to 'biochar evolution': Shaping a promising mitigation tool demands future research efforts. Agricultural and Food Science 22 (4) S. 371 - 372. DOI: 10.23986/afsci.9328
Augustenborg C.A., Hepp S., Kammann C., Hagan D., Schmidt O., Muller C. (2012): Biochar and Earthworm Effects on Soil Nitrous Oxide and Carbon Dioxide Emissions. Journal of Environmental Quality 41 S. 1203 - 1209. DOI: 10.2134/jeq2011.0119
Kammann C., Ratering S., Eckhard C., Müller C. (2012): Biochar and Hydrochar Effects on Greenhouse Gas (Carbon Dioxide, Nitrous Oxide, and Methane) Fluxes from Soils. Journal of Environmental Quality 41 (4) S. 1052 - 1066. DOI: 10.2134/jeq2011.0132
Buss W., Kammann C., Koyro H.-W. (2012): Biochar Reduces Copper Toxicity in Chenopodium quinoa Willd. in a Sandy Soil. Journal of Environmental Quality 41 (4) S. 1157 - 1165. DOI: 10.2134/jeq2011.0022
Angel R., Kammann C., Claus P., Conrad R. (2012): Effect of long-term free-air CO2 enrichment on the diversity and activity of soil methanogens in a periodically waterlogged grassland. Soil Biology and Biochemistry 51 S. 96 - 103. DOI: 10.1016/j.soilbio.2012.04.010
Lenhart K., Bunge M., Ratering S., Neu T.R., Schüttmann I., Greule M., Kammann C., Schnell S., Müller C., Zorn H., Keppler F. (2012): Evidence for methane production by saprotrophic fungi. Nature Communications 3 DOI: 10.1038/ncomms2049
Augustenborg C.A., Hepp S., Kammann C., Hagan D., Schmidt O., Müller C. (2012): Impact of biochar on soil N2O and CO2 emissions in the presence of earthworms. Journal of Environmental Quality 41 (4) S. 1203 - 1209. DOI: 10.2134/jeq2011.0119
Shrestha P.M., Kammann C., Lenhart K., Dam B., Liesack W. (2012): Linking activity, composition and seasonal dynamics of atmospheric methane oxidizers in a meadow soil. ISME Journal 6 S. 1115 - 1126. DOI: 10.1038/ismej.2011.179
Busch D., Kammann C., Grünhage L., Müller C. (2012): Simple Biotoxicity Tests for Evaluation of Carbonaceous Soil Additives: Establishment and Reproducibility of Four Test Procedures. Journal of Environmental Quality 41 (4) S. 1023 - 1032. DOI: 10.2134/jeq2011.0122
Regan K., Kammann C., Hartung K., Lenhart K., Müller C., Philippot L., Kandeler E., Marhan S. (2011): Can differences in microbial abundances help explain enhanced N2O emissions in a permanent grassland under elevated atmospheric CO2?. Global Change Biology 17 (10) S. 3176 - 3186. DOI: 10.1111/j.1365-2486.2011.02470.x
Willems A.B., Augustenborg C.A., Hepp S., Lanigan G.J., Hochstrasser T., Kammann C. (2011): Carbon dioxide emissions from spring ploughing of grassland in Ireland. Agriculture, Ecosystems and Environment 144 (1) S. 347 - 351. DOI: 10.1016/j.agee.2011.10.001
Libra J.A., Ro K.S., Kammann C., Funke A., Berge N.D., Neubauer Y., Titirici M.-M., Fühner C., Bens O., Kern J., Emmerich K.-H. (2011): Hydrothermal carbonization of biomass residuals: A comparative review of the chemistry, processes and applications of wet and dry pyrolysis. Biofuels 2 (1) S. 71 - 106. DOI: 10.4155/bfs.10.81
Kammann C., Linsel S., Gößling J.W., Koyro H.-W. (2011): Influence of biochar on drought tolerance of Chenopodium quinoa Willd and on soil-plant relations. Plant and Soil 345 (1-2) S. 195 - 210. DOI: 10.1007/s11104-011-0771-5
Müller C., Rütting T., Abbasi M.K., Laughlin R., Kammann C., Clough T.J., Sherlock R.R., Kattge J., Jäger H.-J., Watson C.J., Stevens R.J. (2009): Effect of elevated CO2 on soil N dynamics in a temperate grassland soil. Soil Biology and Biochemistry 41 (9) S. 1996 - 2001. DOI: 10.1016/j.soilbio.2009.07.003
Kammann C., Hepp S., Lenhart K., Müller C. (2009): Stimulation of methane consumption by endogenous CH4 production in aerobic grassland soil. Soil Biology and Biochemistry 41 (3) S. 622 - 629. DOI: 10.1016/j.soilbio.2008.12.025
Kammann C., Müller C., Grünhage L., Jäger H.-J. (2008): Elevated CO2 stimulates N2O emissions in permanent grassland. Soil Biology and Biochemistry 40 (9) S. 2194 - 2205. DOI: 10.1016/j.soilbio.2008.04.012
Rogers A., Ainsworth E.A., Kammann C. (2006): FACE Value: Perspectives on the Future of Free-Air CO2 Enrichment Studies. 978-3-540-31236-9
Grueters U., Janze S., Kammann C., Jaeger H.J. (2006): Plant functional types and elevated CO2: A method of scanning for causes of community alteration. Journal of Applied Botany and Food Quality 80 (2) S. 116 - 128.
Kolb S., Carbrera A., Kammann C., Kämpfer P., Conrad R., Jäckel U. (2005): Quantitative impact of CO2 enriched atmosphere on abundances of methanotrophic bacteria in a meadow soil. Biology and Fertility of Soils 41 (5) S. 337 - 342. DOI: 10.1007/s00374-005-0842-y
Kammann C., Grünhage L., Grüters U., Janze S., Jäger H.-J. (2005): Response of aboveground grassland biomass and soil moisture to moderate long-term CO2 enrichment. Basic and Applied Ecology 6 (4) S. 351 - 365. DOI: 10.1016/j.baae.2005.01.011
Müller C., Abbasi M., Kammann C., Clough T., Sherlock R., Stevens R., Jäger H.-J. (2004): Soil respiratory quotient determined via barometric process separation combined with nitrogen-15 labelling. Soil Science Society of America Journal 68 S. 1610 - 1615. DOI: 10.2136/sssaj2004.1610
Müller C., Kammann C., Ottow J.C.G., Jäger H.-J. (2003): Nitrous oxide emission from frozen grassland soil and during thawing periods. Journal of Plant Nutrition and Soil Science 166 (1) S. 46 - 53. DOI: 10.1002/jpln.200390011
Jäger H.-J., Schmidt S.W., Kammann C., Grünhage L., Müller C., Hanewald K. (2003): The University of Giessen Free-Air Carbon Dioxide Enrichment Study: Description of the experimental site and of a new enrichment system. Journal of Applied Botany 77 S. 117 - 127.
Horz H-P., Raghubanshi A.S., Heyer J., Kammann C., Conrad R., Dunfield P. (2002): Activity and community structure of methane-oxidising bacteria in a wet meadow soil. FEMS Microbiology Ecology 41 (3) S. 247 - 257. DOI: 10.1111/j.1574-6941.2002.tb00986.x
Müller C., Martin M., Stevens R.J., Laughlin R.J., Kammann C., Ottow J.C.G., Jäger H.-J. (2002): Processes leading to N2O emissions in grassland soil during freezing and thawing. Soil Biology and Biochemistry 34 (9) S. 1325 - 1331. DOI: 10.1016/S0038-0717(02)00076-7
Kammann C., Grünhage L., Jäger H.-J. (2001): A new sampling technique to monitor concentrations of CH4, N2O and CO2 in air at well-defined depths in soils with varied water potential. European Journal of Soil Science 52 (2) S. 297 - 303. DOI: 10.1046/j.1365-2389.2001.00380.x
Kammann C., Grünhage L., Jäger H.-J., Wachinger G. (2001): Methane fluxes from differentially managed grassland study plots: the important role of CH4 oxidation in grassland with a high potential for CH4 production. Environmental pollution 115 (2) S. 261 - 273. DOI: 10.1016/S0269-7491(01)00103-8
Kammann C., Grünhage L., Müller C., Jacobi S., Jäger H.-J. (1998): Seasonal variability and mitigation options for N2O emissions from differently managed grasslands. Environmental pollution 102 S1 S. 179 - 186. DOI: 10.1016/S0269-7491(98)80031-6
Kammann C., Kappen L. (1996): The influence of nitrogen nutrition on CO2-exchange, nitrogen and biomass partitioning in black alder. Ges. für Ökologie S. 109 - 114.
Research Projects
Assessing Pakistan’s GHG emissions and scaling up globally accepted CO2 removal strategies via C-sink trading: Academic capacity building for a climate-resilient agriculture for Pakistan

Project start: 01.01.2024
Project end: 31.12.2025
Sponsor: German Academic Exchange Service

Pakistan's national GHG budget is not based on real measurements but on IPCC factors as there is no infrastructure to measure stable greenhouse gases (N2O, CH4, CO2). Therefore, the actual GHG emissions could be misjudged and awareness of mitigation measures is lacking. A novel technique (MIRA; https://aerissensors.com/) enables the measurement of GHG concentrations with a robust portable analyzer directly in the field with higher precision at lower costs than gas chromatography. The Kammann Group has a MIRA CO2/N2O analyzer. In "AssessGHG-RemoveC", annual GHG Summer Schools are planned in Germany in 2024 and 2025, where 6 and 7 Pakistani scientists respectively will be trained together with 10 young German scientists. The Pakistani participants undertake to pass on what they have learned in a GHG workshop at NUST (multiplier approach); HGU colleagues provide support and bring measuring equipment. The GHG workshop in Pakistan takes place at the same time as a Biochar Academy. The production and use of Biochar is an established CDR (carbon dioxide removal) technology that combines C sinks in soils with many advantages for agriculture in subtropical/tropical climates. The aim is to incentivize rural Biochar production and use through the growing global trade in carbon sinks. A new certification guideline for countries with smallholder farming has created the conditions for C-sink payments to smallholders. To this end, annual Biochar Academies are held at NUST in Pakistan with the support of the International Biochar Initiative and Carbon Standards International. Workshops / academies are designed for networking and are problem-oriented.

Transformative Mixed Crop Systems for One Health (TRIO) - Subproject Diversity, food webs, and migratory movements of arthropods in mixed cropping systems

Project start: 01.01.2024
Project end: 31.12.2027
Sponsor: Hessen State Ministry of Higher Education, Research and the Arts

Adapting to climate change with increasing drought is currently one of the greatest challenges for agriculture. With the integration of deep-rooted plants or perennial taproot plants into crop rotations, mixed crops can use resources more efficiently, and greater drought stress tolerance can therefore be expected. At the same time, plant health, climate protection through carbon storage in the soil, and biodiversity should increase. The project “TRIO: Transformative Mixed Crop Systems for One Health", a joint project between Geisenheim University and the Universities of Kassel and Giessen funded within the LOEWE priority program, is testing these hypotheses by cultivation of the medicinal and aromatic plants fennel, caraway, and coriander in intercropping with wheat. At the department of Crop Protection, Geisenheim University the sub-project “Diversity, food webs, and migratory movements of arthropods in mixed cropping systems” is studied. Arthropods provide important ecosystem services that are relevant for plant health and yield. According to the hypothesis of biotic resistance, biological diversity in a cultivation system can reduce the damage caused by pests and increase productivity at the same time. This is investigated in this subproject via a comparative analysis of arthropod diversity and their ecosystem services in intercropping systems compared to the corresponding monocultures. In addition, migratory movements of beneficial arthropods between cropping partners as well as the volatile plant compounds of the partner plants are evaluated with regard to their attractiveness for selected beneficial insects and pests in choice experiments.

Hochschule Geisenheim
© Prof. Dr. Annette Reineke
BIOCHAR-MACADAM URBAN-GREEN SUBSTRATES AS CLIMATE ADAPTATION AND MITIGATION STRATEGY - Knowledge transfer, competence building and practical application for mitigating the heat island effect and for managing heavy rainfall events in urban areas

Project start: 01.07.2023
Project end: 30.06.2026
Sponsor: Bundesministerium für Umwelt, Naturschutz und nukleare Sicherheit

The preservation and planting of urban green, especially trees, play a crucial role in the adaptation of cities to global heating, as they provide natural cooling. Larger trees transpire up to 500 litres of water per day. Shade and evaporative cooling reduce the effect of urban heat islands. However, road salt, soil compaction and pollutants stress urban trees. Heat and drought intensify, so that new plantings often fail to grow and existing trees increasingly die before they reach a size that has an impact on the city's climate. Alternative tree substrates could provide a remedy, and also improve the infiltration of water from heavy rainfall events. One promising approach are biochar macadam substrates (PMS), i.e. defined mixtures of rock gravel, plant charcoal and compost. After compaction, the crushed stone results in a passable but pore-rich structure that creates space and aaeration for root growth and which are capable of absorbing high levels of precipitation. The production of the biochar also locks up biomass carbon over decades to millennia (=carbon sinks, i.e. carbon (dioxide) removal). PMS were developed in Stockholm and are so far only used in Sweden, Austria and Switzerland. The goal of "Black2GoGreen" is to create a network of municipalities, municipal enterprises, associations as well as manufacturers of biochar and biochar (tree, green-roof) substrates to transfer knowledge about already implemented solutions to Germany.

ATW-HGU Industriegespräch zu Agri-Photovoltaik (APV)

Project start: 01.05.2023
Project end: 31.12.2023
Sponsor: uratorium für Technik und Bauwesen in der Landwirtschaft e.V.

The aim of the project is to organise an industry discussion on dual land use for grapevines. To this end, the working group will prepare an overview article in specialist journals in advance. The ATW-HGU industry discussion on the topic of agri-photovoltaics (APV) will take centre stage, offering an open discussion platform on this topic. To this end, it is desirable to use the contacts of the DLG and to provide organisational support for the industry discussion via the KTBL so that the topic can also be transferred to other special crops. The topic of autonomous, electrified cultivation and innovations in this area, especially in combination with Agri-PV power generation, will be addressed in a practical manner in the form of a machine demonstration.

Hochschule Geisenheim
© Prof. Dr. Manfred Stoll
ATW-HGU Industriegespräch zu Agri-Photovoltaik (APV)

Project start: 01.05.2023
Project end: 31.12.2023
Sponsor: uratorium für Technik und Bauwesen in der Landwirtschaft e.V.

Hochschule Geisenheim
© © Prof. Dr. Manfred Stoll
Potentials of agroforestry and agri-PV systems for maximising soil organic carbon build-up and carbon storage on agricultural land ("HUMAX") - Subproject Agri-PV-HUMAX-HGU

Project start: 01.05.2023
Project end: 30.04.2029
Sponsor: Federal Office for Agriculture and Food

In the HUMAX project, different measures for humus build-up are to be investigated in different combinations. The aim is to identify possible synergies of the measures and to show combined application options. The innovative potential of the HUMAX project lies in the fact that established humus building measures (catch crops, winter greening, undersowing, compost application, etc.) are to be combined and tested with promising measures such as plant charcoal. A unique feature of the HUMAX project is that these measures will be applied in combination with agri-photovoltaic systems and agroforestry systems. The combination with agroforestry systems opens up further potential as a carbon sink, in addition to the humus build-up, as the trees and shrubs store carbon in the above- and below-ground biomass and also bring with them a large substitution potential through the wood products and the material accumulating during the management of the woody plants. This should be precisely quantified in order to be able to make statements not only about the total carbon storage in the soil and the biomass, but also to quantify the substitution effects and biomass potentials for the production of plant carbon through pyrolysis. By combining the various humus-building measures, ways are to be found to maximise humus build-up and thus carbon sequestration, i.e. the function of the soil as a C sink. Based on this, a modular system will be developed that allows farmers to put together the best possible combination of measures for targeted carbon and humus management on their farms.

VitiCULT-PVmobil: An integrated solution for energy transition, crop protection and climate resilience for sustainable viticultural landscapes

Project start: 01.01.2023
Project end: 31.12.2025
Sponsor: Federal Ministry of Education and Research

The aim of the project is to develop and test for the first time an aesthetically pleasing, mobile, PV system for use in vineyards (Viti PV system), which can be set up and dismantled with little effort and which can be used by winegrowers wherever the need for protection and shading is particularly high, as well as in the future for regenerative energy in viticulture itself (digitalization). The design should be transferable to other row crops (fruit growing), which is guaranteed by the expertise of the partner HGU. In this way, the goals of the energy transition and viticulture, namely adaptation to climate change, digitization and reduced pesticide use and increased sustainability, are to be achieved at the same time by identifying and harnessing synergies beyond dual land use. Based on extensive experience in the planning of plants and movable structures for the use of solar energy, a tailor-made system for use in viticulture will be planned, manufactured and tested. The suitability for viticulture and the acceptance by winegrowers and the population in different regions of Germany will be investigated. The exploitation of the results is scientific (viticulture, acceptance, energy yield) and also commercial: The commercial exploitation by the SME is to take place through licensing of the developed system or manufacturing by a partner company and, if marketed, by the SME.

Pyrogenic carbon and carbonating minerals (PyMiCCS) for enhanced plant growth and carbon capture and storage: Interactions with plant growth and resulting environmental effects

Project start: 01.03.2022
Project end: 28.02.2025
Sponsor: Federal Ministry of Education and Research

Meeting the 1.5°C and also the 2.0°C target requires not only a rapid reduction in global greenhouse gas emissions, but also - in addition - a net removal of CO2 from the atmosphere (so-called Carbon Dioxide Removal, CDR). There are four terrestrial CDR methods that can be rapidly implemented, each of which supports a range of sustainable development goals (such as food security and a clean environment): (1) pyrogenic carbon sequestration (plant carbon), (2) enhanced weathering (EW), (3) soil organic carbon (SOC), and (4) biomass carbon capture (BCC), for example through the use of agroforestry systems. However, in order to maximise carbon sequestration (per area), the synergies of these methods must also be investigated and understood. So far, this has almost exclusively been studied separately - the potential synergies are part of our PyMiCCS project goals. Vegetable charcoal and volcanic rock flour for EW not only sequester carbon in soils, but also balance soil pH and redox potential, provide nutrients, improve soil hydrology and promote soil biodiversity, root growth, crop yields and thus BCC. If theoretically two tonnes of plant charcoal-based fertiliser and one tonne of volcanic rock dust were applied per hectare annually, carbon sinks would be of 5.4 t CO2eq would be created - without any synergies on SOC and BCC. Scaled up to 50% of the world's agricultural land, this would be 13 Gt CO2eq with improved food and feed productivity. feed. In a wide range of iterative experiments and analyses from laboratory from laboratory to field scale, with and without soils and plants, we are generating data to for the parameterisation of global models for C-sink potential analyses and for the evaluation of economic feasibility.

Sustainable viticulture of the future: Agro-photovoltaics as a viticultural adaptation strategy to climate change

Project start: 01.07.2020
Project end: 30.06.2025
Sponsor: Hessisches Ministerium für Landwirtschaft und Umwelt, Weinbau, Forsten, Jagd und Heimat

The aim of the VitiVoltaic4Future project is to conduct research for viticulture in a newly created real laboratory for the use of agrophotovoltaics (APV). The infrastructure is to serve as an innovation platform beyond the project period; it is to enable research, development and knowledge transfer, as well as to encourage social participation in shaping the energy transition using practical examples. An overarching goal is to make land use more sustainable for special crops (here using viticulture as an example), to open up new ways of adapting the cultivation of special crops to climate change, and at the same time to develop renewable, decentralized power generation plus agricultural production in the field to application maturity iteratively with the stakeholders concerned as part of the energy transition. The concrete goal of VitiVoltaic4Future is to quantify the effects and possibilities of viticulture under Germany's first agro-PV system, to provide data for knowledge transfer, and to scientifically accompany adaptation strategy possibilities that could arise from such solar islands through viticultural research and know-how building. Within the project, measures for biodiversity promotion in viticulture (--> project "AMBITO) will be integrated. In particular, we aim to link "solar islands" with biodiversity islands in viticultural cultural landscapes, in order to holistically promote the sustainability of viticulture.

Adaptation to climate change in Hesse - Increasing soil water retention through regenerative agriculture strategies.

Project start: 01.04.2020
Project end: 31.03.2023
Sponsor: Hessisches Ministerium für Landwirtschaft und Umwelt, Weinbau, Forsten, Jagd und Heimat

The aim of the joint project "AKHWA" is to contribute to measure L 19 of the Integrated Climate Protection Plan Hesse 2025. The joint project is concerned with research into the implementation of cultivation measures from the "toolbox" of regenerative agriculture (ReLaWi) on soil fertility and ecosystem services, especially with regard to soil water retention, which is becoming increasingly important against the backdrop of advancing climate change and the recent heatwave summers.

Developing an economically attractive concept for carbonization of organic material by an open carbonization process and carbonisate use for improvement of soil quality, yield incrase and environmental benefits

Project start: 05.04.2019
Project end: 30.11.2021
Sponsor: Central Innovation Programme for SMEs

The ZIM cooperation project with Prodana GmbH involves the development of a new batch reactor by the start-up company for the carbonization of a farmer's own woody residues or wood chips. The task of the partner HGU is the development and evaluation of plant carbon-based organic fertilizers under examination of their environmental effects and environmental and yield effectiveness. At HGU, tests are therefore carried out with biochar from the novel retort, in which either a more extensive screening of various carbon fertilizer combinations for their nitrate retention capacity and possible N2O emission reduction is carried out in the greenhouse. In addition, selected carbon fertilizer combinations for a possible yield increases and improvement of the environmental balance are tested in the field under natural weather conditions using pseudo-lysimeters. The results of the project partner HGU will be used to improve the batch process of biochar production accordingly and to develop a field data basis that can be made available to potential interested parties and users.

Carbon Fertilizers for reduced GHG emissions and improved food security

Project start: 01.01.2018
Project end: 31.12.2019
Sponsor: German Academic Exchange Service

This project investigates the application of nutrient-loaded biochar in less fertile agricultural soils of Pakistan with additional mechanistic investigations carried out in Germany. A set of field (Pakistan) and laboratory experiments (Germany) will be conducted to evaluate the effect of biochar on nutrient use efficiency and GHG emission per unit of agronomic yield production or per unit of agricultural land use. The field experiments will be conducted at University of Agriculture Multan (MNSUAM), Pakistan. All GHG samples collected from the Pakistan field study will be analysed at Hochschule Geisenheim University (HGU), Germany where the necessary gas chromatographic methods are established. The PI in Pakistan (Dr. Haider and his PhD and later master student) will visit Germany in 2018 and 2019 to learn GHG data analysis with the gas chromatograph (GC) and subsequent calculations and protocols using R protocols. They will also conduct controlled experiments (2nd year) using e.g. Pakistan soil or Pakistan vegetable species.

Recently, the combination of conservation farming methods with using biochar as a carrier for organic and mineral fertilizers applied to the root zone produced promising results. In this project we seek to test these novel approaches for improving yields while at the same time reducing the GHG emissions associated with agricultural production. Pakistan is the 6th largest population on the planet and there are rarely studies or data available on agricultural greenhouse gas emissions. Thus, the present project will investigate novel C-sequestering fertilization strategies, but also be the founding study in Pakistan to obtain first estimates of GHG emissions per unit of crop production or per unit of agricultural land, under specific cropping systems and fertilizer regimes.

Global biomass-CCS for meeting the 1.5° target: Analysis of potentials, side effects and synergies for atmospheric C removal and C sequestration by biomass carbonization

Project start: 01.04.2017
Project end: 31.03.2019
Sponsor: Federal Ministry of Education and Research

BioCAP-CCS quantifies the global potentials and effects of large-scale land use with biomass plantations used to limit global warming to 1.5° by negative emissions for mitigation and compensation of temporary overshooting emissions. The project quantifies for the first time the global potential of biochar-CCS while considering concurrences for land, water, food security and protection of ecosystem integrity.

Map

Data from OpenStreetMap - published under ODbL

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