Dr. Bettina Tonn - Scientist

Research interests

  • Spatial heterogeneity in grazed grasslands
  • Multi-scale nutrient transfer through grazing animals
  • Driving forces of plant diversity and species interactions in managed grassland systems
  • Conservation and restoration of species-rich grasslands
  • Energy generation from semi-natural grassland biomass

Personal website

Current projects

  • Conservation of open landscapes by targeted land and wildlife management - Integration of wild populations of red deer into the management of open habitats, project duration: 2015 - 2019 Details
  • IMPAC³ - Novel genotypes for mixed cropping allow for improved sustainable land use across arable land, grassland and woodland - Subproject "Plant traits for mixed grassland crops", project duration: 2015 - 2019 Details
  • SIGNAL - Sustainable intensification of agriculture through agroforestry - Subproject "Grassland tissue and litter production as affected by tree x grass sward interaction and grassland management" , project duration: 2015 - 2021 Details
  • SUPER-G – Developing sustainable permanent grassland systems and policies, project duration: 2018 - 2022, Details

Short CV

since 2011: PostDoc at the Institute of Grassland Science, University of Göttingen

2007-2011: Scientist at the "Landwirtschaftliches Zentrum für Rinderhaltung, Grünlandwirtschaft, Milchwirtschaft, Wild und Fischerei Baden-Württemberg (LAZBW)", Aulendorf, Germany

2006-2011: Ph.D. researcher at the Institute of Crop Science, Universität Hohenheim, Germany, Thesis: "Suitability of semi-natural grassland biomass for bioenergy generation through combustion"

2000-2005 Study: Agricultural Biology, Universität Hohenheim / University of Aberdeen, Diplom thesis: "Spatial heterogeneity of a rotational pasture"

Publications in peer-reviewed journals

Hamidi D., Komainda M., Tonn B., Harbers J., Grinnell N. & Isselstein J. (2021). The Effect of Grazing Intensity and Sward Heterogeneity on the Movement Behavior of Suckler Cows on Semi-natural Grassland. Frontiers in Veterinary Science, 8, Article 639096, https://doi.org/10.3389/fvets.2021.639096

Nölke, I., Tonn, B., Isselstein, J., 2021: Seasonal plasticity more important than population variability in effects on white clover architecture and productivity, Annals of Botany, mcab040, https://doi.org/10.1093/aob/mcab040

Schmiedgen, A., Komainda, M., Kowalski, K., Hostert, P., Tonn, B., Kayser, M., Isselstein, J. 2021. Impacts of cutting frequency and position to tree line on herbage accumulation in silvopastoral grassland reveal potential for grassland conservation based on land use and cover information. Accepted Annals of Applied Biology. https://doi.org/10.1111/aab.12681

Tonn, B., Komainda, M., Isselstein, J., 2021: Results from a biodiversity experiment fail to represent economic performance of semi-natural grasslands. Nature Communications. https://doi.org/10.1038/s41467-021-22309-7.

Tonn B., Raab C., Isselstein J. (2018) Sward patterns created by patch grazing are
stable over more than a decade. Grass and Forage Science. doi: 10.1111/gfs.12389

Becker T., Kayser M., Tonn B., Isselstein J. (2018) How do German dairy farmers
perceive advantages and disadvantages of grazing and how it relates to their milk
production system. Livestock Science 214, 112-119. doi: 10.1016/j.livsci.2018.05.018

Raab R., Stroh H.-G., Tonn B., Meißner M., Rohwer N., Balkenhol N., Isselstein J.
(2018) Mapping semi-natural grassland communities using multi-temporal RapidEye
remote sensing data. International Journal of Remote Sensing.
doi: 10.1080/01431161.2018.1504344

Riesch F., Stroh H.-G., Tonn B., Isselstein J. (2018) Soil pH and phosphorus drive
species composition and richness in semi-natural heathlands and grasslands unaffected
by twentieth-century agricultural intensification. Plant Ecology & Diversity 11, 239-253.
doi: 10.1080/17550874.2018.1471627

Scheile T., Isselstein J., Tonn B. (2018) Herbage biomass and uptake under low-input
grazing as affected by cattle and sheep excrement patches. Nutrient Cycling in
Agroecosystems. doi: 10.1007/s10705-018-9945-3

Dickeduisberg M., Laser H., Tonn B., Isselstein J. (2017) Tall wheatgrass (Agropyron
elongatum) for biogas production: Crop management more important for biomass and
methane yield than grass provenance. Industrial Crops and Products 97, 653-663.
doi: 10.1016/j.indcrop.2016.12.055

Nüsse A., Linsler D., Kaiser M., Tonn B., Ebeling D., Isselstein J., Ludwig B. (2017)
Effect of grazing intensity and soil characteristics on soil organic carbon and nitrogen
stocks in a temperate long term grassland. Archives of Agronomy and Soil Science 63,
1776-1783. doi: 10.1080/03650340.2017.1305107

Tonn B., Thumm U., Lewandowski I., Claupein W. (2012) Leaching of biomass from
semi-natural grasslands – effects on chemical composition and ash high-temperature
behavior. Biomass and Bioenergy 36, 390-403. doi: 10.1016/j.biombioe.2011.11.014

Tonn B., Dengler V., Thumm U., Piepho H.-P., Claupein W. (2011) Influence of
leaching on the chemical composition of grassland biomass for combustion. Grass and
Forage Science 66, 464-473. doi: 10.1111/j.1365-2494.2011.00804.x

Tonn B., Thumm U., Claupein W. (2010) Semi-natural grassland biomass for
combustion, influence of botanical composition, harvest date and site conditions on fuel
composition. Grass and Forage Science 65, 383-397. doi: 10.1111/j.1365-

Tonn B., Thumm U., Claupein W. (2008) Verbrennungseignung von
Landschaftspflegeheu. Pflanzenbestand und Schnittzeitpunkt als Einflussfaktoren auf
die chemische Brennstoffqualität. Naturschutz und Landschaftsplanung 40, 367-372.