Lehrstuhl für Tierökologie und Tropenbiologie

Dr. Simon Thorn

Prof. Dr. Simon Thorn

Professur in Philipps-Universität Marburg und Leiter der Staatlichen Vogelschutzwarte
Hessisches Landesamt für Naturschutz, Umwelt und Geologie (HLNUG)
Staatliche Vogelschutzwarte
Institut für angewandte Vogelkunde
Europastraße 10
35394 Gießen

- Windthrow and bark-beetle project

- Effects of sun exposure on saproxylic beetles

Since 2016 Postdoc at the University of Würzburg, Field Station Fabrikschleichach, Germany

2013-2016 PhD Student at the Technical University of Munich, Germany.
Thesis “Effects of salvage logging on biodiversity – Ecological evidence for conservation-oriented management of natural disturbances”

2013 Master thesis “Collateral damage beyond species – How post-windthrow salvage logging alters the functional composition of saproxylic beetle assemblages“, University of Gießen, Germany

2011-2013 Masters degree in Biology at the University of Gießen, Germany

2008-2011 Bachelors degree in Biology at the University of Gießen, Germany (Thesis: “GIS-based habitat model for the little owl (Athene noctua) in Hessen”)


Seibold S, Hagge J, Müller J, Gruppe A, Brandl R, Bässler C, Thorn S (2017) Experiments withdead wood reveal the importance of dead branches in the canopy for saproxylic beetle conservation. Forest Ecology and Management (accepted).

Müller J, Brandl R, Brändle M, Förster ., de Araujo BC, Gossner MM, Ladas A, Wagner M, Maraun M, Schall P, Schmidt S, Thorn S, Seibold S (2017) Patterns of arthropod diversity following LiDAR derived canopy structure support the more-individual hypothesis. Oikos (accepted). DOI: 10.1111/oik.04972


Eckelt A, Müller J, Bense U, Brustel H, Bußler H, Chittaro Y, Cizek L, Frei A, Holzer E, Kadej M, Kahlen M, Köhler F, Möller G, Mühle H, Sanchez A, Schaffrath U, Schmidl J, Smolis A, Szallies A, Németh T, Wurst C, Thorn S, Bojesen Christensen RH, Seibold S (2017) “Primeval forest relict beetles” of Central Europe: a set of 168 umbrella species for the protection of primeval forest remnants. Journal of Insect Conservation. DOI: 10.1007/s10841-017-0028-6

Farwig N,  Ammer C, Annighöfer P, Baur B, Behringer D, Diekötter T, Hotes S, Leyer I, Müller J, Peter F, Riecken U, Bessel A, Thorn S, Werk K, Ziegenhagen B (2017) Bridging science and practice in conservation: Deficits and challenges from a research perspective. Basic and Applied Ecology. DOI: 10.1016/j.baae.2017.08.007

Quillfeldt P, Thorn S, Richter B, Nabte M, Coria N, Masello JF, Massaro M, Neves VC, Libertelli M (2017) Testing the usefulness of hydrogen and compound-specific stable isotope analyses in seabird feathers: a case study in two sympatric Antarctic storm-petrels. Marine Biology, pp.164-192. DOI: 10.1007/s00227-017-3224-8

Lindenmayer DB, Thorn S, Noss R (2017) Countering resistance to protected-area extension. Conservation Biology. DOI: 10.1111/cobi.12990

Seibold S, Bässler C, Brandl R, Fahrig L, Förster B, Heurich M, Hothorn T, Scheipl F, Thorn S, Müller, J (2017) An experimental test of the habitat-amount hypothesis for saproxylic beetles in a forested region. Ecology 98(6), pp. 1613-1622. DOI: 10.1002/ecy.1819

Mader V, Diehl E, Fiedler D, Thorn S, Wolters V, Birkhofer K (2017) Trade-offs in arthropod conservation between productive and non-productive agri-environmental schemes along a landscape complexity gradient. Insect Conservation and Diversity 10(3), pp. 236-247. DOI: 10.1111/icad.12220

Thorn S, Bässler C, Brandl R,  Burton PJ, Cahall R, Campbell JL, Castro J, Choi C-Y, Cobb T, Donato DC, Durska E, Fontaine JB, Gauthier S, Hebert C, Hothorn T, Hutto RL, Lee E-J, Leverkus AB, Lindenmayer DB, Obrist MK, Rost J, Seibold S, Seidl R, Thom D, Waldron K, Wermelinger B, Winter M-B, Zmihorski M, Müller J (2017) Impacts of salvage logging on biodiversity: A meta-analysis. Journal of Applied Ecology. DOI: 10.1111/1365-2664.12945

Müller J, Sagheb-Talebi K, Thorn S (2017) Protect Iran's ancient forest from logging. Science 355(6328), pp. 919. DOI: 10.1126/science.aam8810

Vogel S, Alvarez B, Bässler C, Müller J, Thorn S (2017) The Red-belted Bracket (Fomitopsis pinicola) colonizes spruce trees early after bark beetle attack and persists. Fungal Ecology 27, pp. 182-188. DOI: 10.1016/j.funeco.2016.12.007

Lindenmayer DB, Thorn S, Banks S (2017) Please do not disturb ecosystems further. Nature Ecology and Evolution 1. DOI: 10.1038/s41559-016-0031


Fetting P, Thorn S, Päckert M, Heim W (2016) First record of Yellow-bellied Tit Pardaliparus venustulus in Russia suggests a significant range extension of a species formerly endemic to China. Forktail 32, pp. 88-90.

Thorn S, Bussler H, Fritze M-A, Goeder P, Müller J, Weiß I, Seibold S (2016) Canopy closure determines arthropod assemblages in microhabitats created by windstorms and salvage logging. Forest Ecology and Management 381, pp. 188-195. DOI: 10.1016/j.foreco.2016.09.029

Seibold S, Bässler C, Baldrian P,  Reinhard L, Thorn S, Ulyshen MD, Weiß I, Müller J (2016) Dead-wood addition promotes non-saproxylic epigeal arthropods but effects are mediated by canopy openness. Biological Conservation 204, pp. 181-188. DOI: 10.1016/j.biocon.2016.09.031

Kulakowski D, Seidl R, Holeksa J,  Kuuluvainen T, Nagel TA, Panayotov M, Svoboda M, Thorn S, Vacchiano G, Whitlock C, Wohlgemuth T, Bebi P (2017) A walk on the wild side: Disturbance dynamics and the conservation and management of European mountain forest ecosystems. Forest Ecology and Management 388, pp. 120-131. DOI: 10.1016/j.foreco.2016.07.037

Thorn S, Bässler C, Svoboda M, Müller J (2017) Effects of natural disturbances and salvage logging on biodiversity – Lessons from the Bohemian Forest. Forest Ecology and Management 388, pp. 113-119. DOI: 10.1016/j.foreco.2016.06.006

Mader V, Birkhofer K, Fiedler D, Thorn S, Wolters V, Diehl E (2016) Land use at different spatial scales alters the functional role of web-building spiders in arthropod food webs. Agriculture, Ecosystems and Environment 219, pp. 152-162. DOI: 10.1016/j.agee.2015.12.017

Thorn S, Bässler C, Bußler H,  Lindenmayer DB, Schmidt S, Seibold S, Wende B, Müller J (2016) Bark-scratching of storm-felled trees preserves biodiversity at lower economic costs compared to debarking. Forest Ecology and Management 364, pp. 10-16. DOI: 10.1016/j.foreco.2015.12.044

Müller J, Thorn S, Baier R, Sagheb-Talebi K, Barimani H, Seibold S, Ulyshen MD, Gossner MM (2015) Protecting the Forests While Allowing Removal of Damaged Trees may Imperil Saproxylic Insect Biodiversity in the Hyrcanian Beech Forests of Iran. Conservation Letters 9(2), pp.106-113. DOI: 10.1111/conl.12187

Thorn CJ, Bissinger K, Thorn S, Bogner FX (2016) "Trees live on soil and sunshine!" - Coexistence of scientific and alternative conception of tree assimilation. PLoS ONE 11(1),e0147802. DOI: 10.1371/journal.pone.0147802

Seibold S, Bässler C, Brandl R, Büche B, Szallies A, Thorn S, Ulyshen MD, Müller J (2016) Microclimate and habitat heterogeneity as the major drivers of beetle diversity in dead wood. Journal of Applied Ecology 53(3), pp. 934-943. DOI: 10.1111/1365-2664.12607

Heikkala O, Seibold S, Koivula M, Martikainen P, Müller J, Thorn S, Kouki J (2016) Retention forestry and prescribed burning result in functionally different saproxylic beetle assemblages than clear-cutting. Forest Ecology and Management 359, pp. 51-58. DOI: 10.1016/j.foreco.2015.09.043


Seibold S, Bässler C, Brandl R, Gossner MM, Thorn S, Ulyshen MD, Müller J (2015) Experimental studies of dead-wood biodiversity - A review identifying global gaps in knowledge. Biological Conservation 191, pp. 139-149. DOI: 10.1016/j.biocon.2015.06.006

Thorn S, Bässler C, Bernhardt-Römermann M, Cadotte M, Heibl C, Schäfer H, Seibold S, Müller J (2016) Changes in the dominant assembly mechanism drive species loss caused by declining resources. Ecology Letters 19(2), pp. 163-170. DOI: 10.1111/ele.12548

Bässler C, Müller J, Cadotte MW, Heibl C, Bradtka JH, Thorn S, Halbwachs H (2016) Functional response of lignicolous fungal guilds to bark beetle deforestation. Ecological Indicators 65, pp. 149-160. DOI: 10.1016/j.ecolind.2015.07.008

Thorn S, Werner SAB, Wohlfahrt J, Bässler C, Seibold S, Quillfeldt P, Müller J (2016) Response of bird assemblages to windstorm and salvage logging - Insights from analyses of functional guild and indicator species. Ecological Indicators 65, pp. 142-148. DOI: 10.1016/j.ecolind.2015.06.033

Beudert B, Bässler C, Thorn S, Noss R, Schröder B, Dieffenbach-Fries H, Foullois N, Müller J (2015) Bark Beetles Increase Biodiversity While Maintaining Drinking Water Quality. Conservation Letters 8(4), pp. 272-281. DOI: 10.1111/conl.12153

Seibold S, Brandl R, Buse J, Hothorn T, Schmidl J, Thorn S, Müller J (2015) Association of extinction risk of saproxylic beetles with ecological degradation of forests in Europe. Conservation Biology 29(2), pp. 382-390. DOI: 10.1111/cobi.12427

Werner SAB, Müller J, Heurich M, Thorn S (2015) Natural regeneration determines wintering bird presence in wind-damaged coniferous forest stands independent of postdisturbance logging. Canadian Journal of Forest Research 45(9), pp. 1232-1237. DOI: 10.1139/cjfr-2014-0501

Thorn S, Müller J, Bässler C, Gminder A, Brandl R, Heibl C (2015) Host abundance, durability, basidiome form and phylogenetic isolation determine fungivore species richness. Biological Journal of the Linnean Society 114(3), pp. 699-708. DOI: 10.1111/bij.12447

Thorn S, Hacker HH, Seibold S, Jehl H, Bässler C, Müller J (2015) Guild-specific responses of forest Lepidoptera highlight conservation-oriented forest management - Implications from conifer-dominated forests. Forest Ecology and Management 337, pp. 41-47. DOI: 10.1016/j.foreco.2014.10.031


Thorn S, Bässler C, Gottschalk T, Hothorn T, Bussler H, Raffa K, Müller J (2014) New insights into the consequences of post-windthrow salvage logging revealed by functional structure of saproxylic beetles assemblages. PLoS ONE 9(7),e101757

Seibold S, Bässler C, Baldrian P, Thorn S, Müller J, Gossner MM (2014) Wood resource and not fungi attract early-successional saproxylic species of Heteroptera - an experimental approach. Insect Conservation and Diversity 7(6), pp. 533-542. DOI: 10.1111/icad.12076