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Prof. Dr. Alexandra-Maria Klein
Tel: +49 (0)761 203-67770


Frau Ilona Winkler
Tel: +49 (0)761 203-3635
Fax: +49 (0)761 203-3638


Professur für Naturschutz
& Landschaftsökologie
Albert-Ludwigs-Universität Freiburg
Tennenbacher Str. 4
D-79106 Freiburg




Dr. Nolan James Rappa

 20230117-P1174202-2.jpgNolan James Rappa
Tel: 0761 203 -8674
Raum Nr. 03088



As a PhD candidate within the ConFoBi Research Group (Conservation of Forest Biodiversity) on sub-project B3 / 2nd phase: Diversity, functions and trophic interactions of arthropods, I have researched the interactions between insect communities and plants in plots in the Black Forest. Specifically, I examined the effects of forest retention measures on insect communities and food web interactions and gained insights on what measures are most effective for the conservation of Forest insects, and what management strategies foster greater ecosystem stability. This was done in conjunction with PhD candidates on other sub-projects in a strong interdisciplinary approach..

poster award 2021 of the GfÖ!





Seit 2022PostDoc in the ConFoBi-Research Group at the Chair of Nature Conservation and Landscape Ecology, University of Freiburg
2019 - 2022
PhD student within the ConFoBi-Research Group at the Chair of Nature Conservation and Landscape Ecology, University of Freiburg
12/2018Master Thesis: “Evaluating the use of the entomopathogenic fungus Beauveria bassiana against the Andromeda Lacebug on Rhododendron”

Student Teacher in Statistics at the University of Bremen

2015 - 2018Master’s Degree “Ecology” at the University of Bremen, Germany
2014, 2015
Field Assistant-United States Forest Service through the University of Alaska, Museum of the North. Project: Monitoring the response of Alaskan insect defoliators
2013 - 2014
National Exchange Student at the University of Alaska, Fairbanks Alaska, United States
2013Field Internship - United States Fish and Wildlife Service, Lower Great Lakes: contributing as field assistant during various conservation projects
2010 - 2014Bachelor’s Degree “Biology” at Buffalo Stage College, Buffalo New York, United States



  • Burrascano, S., Chianucci, F., Trentanovi, G., Kepfer-Rojas, S., […] Rappa, N.J., et al. & Ódor, P. (2023): Where are we now with European forest multi-taxon biodiversity and where can we head to? Biological Conservation 284: 110176. Link
  • Ruppert, L.S., Staab, M., Klingenfuß, S. Rappa, N.J., Frey, J. & Segelbacher, G. (2023): Leaf litter arthropods show little response to structural retention in a Central European forest. Biodiversity and Conservation 32: 3973-3990. Link
  • Rappa, N.J., Staab, M., Rupert, L.S., Frey, J., Bauhus, J. & Klein, A.M (2023): Structural elements enhanced by retention forestry promote forest and non-forest specialist bees and wasps. Forest Ecology and Management 529: 120709. Link (Corrigendum)
  • Chaves, J.E., Aravena Acuña, M.C., Rodríguez-Souilla, J., Cellini, J.M., Rappa, N.J., Lencinas, M.V., Peri, P.L. & Martínez Pastur, G.J. (2023): Carbon pool dynamics after variable retention harvesting in Nothofagus pumilio forests of Tierra del Fuego. Ecological Processes 12: 5. Link
  • Rappa, N.J., Staab, M., Frey, J., Winiger, N. & Klein, A.M. (2022): Multiple forest structural elements are needed to promote beetle biomass, diversity and abundance. Forest Ecosystems 9: e100056. Link


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