Dr. Stefan Widmer

Work at ZHAW

Position

Research Associate Vegetation Ecology Research Group

Focus

Vegetation change; Vegetation resurvey

Experience

• PhD Student Research Group Vegetation Ecology
  Zurich University of Applied Sciences
  2021 - 2025
• Research Assistant Vegetation Ecology Group
  Zurich University of Applied Sciences
  2016 - 2020

Education and Continuing education

Education

• PhD / Ecology
  University of Zurich
  2021 - 2025
• MSc ZFH in Environment and Natural Resources
  Zurich University of Applied Sciences
  2016 - 2019
• Quantitative Ecology Module
  University of South Bohemia in České Budějovice
  2017 - 2018
• BSc ZFH in Natural Resource Sciences
  Zurich University of Applied Sciences
  2012 - 2015

Network

Membership of networks

• International Association for Vegetation Science (IAVS)
• Ecological Society (GfÖ)
• Eurasian Dry Grassland Group (EDGG)
• Swiss Botanical Society (SBG)

ORCID digital identifier

ORCID ID: 0000-0002-4920-5205

Projects

• Epochal changes of grassland diversity in Switzerland: The Square Foot Project / Team member / completed
• Floristic and vegetation-ecological analyses of the green roofs of the lake water plant / Team member / completed

Publications

• Ostrowski, Grzegorz; Aicher, Severin; Mankiewicz, Agnieszka; Chusova, Olha; Dembicz, Iwona; Widmer, Stefan; Dengler, Jürgen,

  2025.

  Mean ecological indicator values : use EIVE but no cover-weighting.

  Vegetation Classification and Survey.

  6, pp. 57-67.

  Available from: https://doi.org/10.3897/vcs.134800

• Riedel, Susanne; Widmer, Stefan; Bringuier, Orane; Dengler, Jürgen,

  2024.

  Cover vs. biomass sampling in grassland vegetation plots.

  Tuexenia.

  44, pp. 261-275.

  Available from: https://doi.org/10.14471/2024.44.003

• Riedel, Susanne; Widmer, Stefan; Babbi, Manuel; Buholzer, Serge; Grünig, Andreas; Herzog, Felix; Richner, Nina; Dengler, Jürgen,

  2023.

  The Historic Square Foot Dataset : outstanding small‐scale richness in Swiss grasslands around the year 1900.

  Journal of Vegetation Science.

  34(5), pp. e13208.

  Available from: https://doi.org/10.1111/jvs.13208

• Riesen, Matthias; Widmer, Stefan; Dengler, Jürgen; Billeter, Regula,

  2022.

  Einfluss maschinell geöffneter Lichtungen auf die Artenvielfalt in Grün-Erlen-Beständen : eine Untersuchung zu Gefäßpflanzen, Tagfaltern und Heuschrecken.

  Naturschutz und Landschaftsplanung.

  54(8), pp. 24-31.

  Available from: https://doi.org/10.1399/NuL.2022.08.02

• Bergauer, Miro; Dembicz, Iwona; Boch, Steffen; Willner, Wolfgang; Babbi, Manuel; Blank-Pachlatko, Jonathan; Catalano, Chiara; Cykowska-Marzencka, Beata; Gehler, Jamyra; Guarino, Riccardo; Keller, Sabrina; Moysiyenko, Ivan; Vynokurov, Denys; Widmer, Stefan; Dengler, Jürgen,

  2022.

  Scale-dependent patterns and drivers of vascular plant, bryophyte and lichen diversity in dry grasslands of the Swiss inneralpine valleys.

  Alpine Botany.

  132(2), pp. 195-209.

  Available from: https://doi.org/10.1007/s00035-022-00285-y

• Charmillot, Kévin; Hedinger, Christian; Babbi, Manuel; Widmer, Stefan; Dengler, Jürgen,

  2021.

  Vegetation change in meso-xeric grasslands of the Swiss Jura Mts. over 40 years.

  Tuexenia.

  41, pp. 441-457.

  Available from: https://doi.org/10.14471/2021.41.019

• Kummli, Julia; Widmer, Stefan; Wilhelm, Markus; Dengler, Jürgen; Billeter, Regula,

  2021.

  Vegetation changes in urban grasslands over 25 years in the city of Zurich, Switzerland.

  Tuexenia.

  41, pp. 423-440.

  Available from: https://doi.org/10.14471/2021.41.018

• Biurrun, Idoia; Pielech, Remigiusz; Dembicz, Iwona; Gillet, François; Kozub, Łukasz; Marcenò, Corrado; Reitalu, Triin; Van Meerbeek, Koenraad; Guarino, Riccardo; Chytrý, Milan; Pakeman, Robin J.; Herrera, Mercedes; Hüllbusch, Elisabeth M.; Ingerpuu, Nele; Jägerbrand, Annika K.; Jandt, Ute; Janišová, Monika; Jeanneret, Philippe; Jeltsch, Florian; Jensen, Kai; Jentsch, Anke; Preislerová, Zdenka; Kącki, Zygmunt; Kakinuma, Kaoru; Kapfer, Jutta; Kargar, Mansoureh; Kelemen, András; Kiehl, Kathrin; Kirschner, Philipp; Koyama, Asuka; Langer, Nancy; Lazzaro, Lorenzo; Axmanová, Irena; Lepš, Jan; Li, Ching‐Feng; Li, Frank Yonghong; Liendo, Diego; Lindborg, Regina; Löbel, Swantje; Lomba, Angela; Lososová, Zdeňka; Lustyk, Pavel; Luzuriaga, Arantzazu L.; Burrascano, Sabina; Ma, Wenhong; Maccherini, Simona; Magnes, Martin; Malicki, Marek; Manthey, Michael; Mardari, Constantin; May, Felix; Mayrhofer, Helmut; Meier, Eliane Seraina; Memariani, Farshid; Bartha, Sándor; Merunková, Kristina; Michelsen, Ottar; Molero Mesa, Joaquín; Moradi, Halime; Moysiyenko, Ivan; Mugnai, Michele; Naqinezhad, Alireza; Natcheva, Rayna; Ninot, Josep M.; Nobis, Marcin; Boch, Steffen; Noroozi, Jalil; Nowak, Arkadiusz; Onipchenko, Vladimir; Palpurina, Salza; Pauli, Harald; Pedashenko, Hristo; Pedersen, Christian; Peet, Robert K.; Pérez‐Haase, Aaron; Peters, Jan; Bruun, Hans Henrik; Pipenbaher, Nataša; Pirini, Chrisoula; Pladevall‐Izard, Eulàlia; Plesková, Zuzana; Potenza, Giovanna; Rahmanian, Soroor; Rodríguez‐Rojo, Maria Pilar; Ronkin, Vladimir; Rosati, Leonardo; Ruprecht, Eszter; Conradi, Timo; Rusina, Solvita; Sabovljević, Marko; Sanaei, Anvar; Sánchez, Ana M.; Santi, Francesco; Savchenko, Galina; Sebastià, Maria Teresa; Shyriaieva, Dariia; Silva, Vasco; Škornik, Sonja; De Frenne, Pieter; Šmerdová, Eva; Sonkoly, Judit; Sperandii, Marta Gaia; Staniaszek‐Kik, Monika; Stevens, Carly; Stifter, Simon; Suchrow, Sigrid; Swacha, Grzegorz; Świerszcz, Sebastian; Talebi, Amir; Essl, Franz; Teleki, Balázs; Tichý, Lubomír; Tölgyesi, Csaba; Torca, Marta; Török, Péter; Tsarevskaya, Nadezda; Tsiripidis, Ioannis; Turisová, Ingrid; Ushimaru, Atushi; Valkó, Orsolya; Filibeck, Goffredo; Van Mechelen, Carmen; Vanneste, Thomas; Vasheniak, Iuliia; Vassilev, Kiril; Viciani, Daniele; Villar, Luis; Virtanen, Risto; Vitasović‐Kosić, Ivana; Vojtkó, András; Vynokurov, Denys; Hájek, Michal; Waldén, Emelie; Wang, Yun; Weiser, Frank; Wen, Lu; Wesche, Karsten; White, Hannah; Widmer, Stefan; Wolfrum, Sebastian; Wróbel, Anna; Yuan, Zuoqiang; Jiménez‐Alfaro, Borja; Zelený, David; Zhao, Liqing; Dengler, Jürgen; Kuzemko, Anna; Molnár, Zsolt; Pärtel, Meelis; Pätsch, Ricarda; Prentice, Honor C.; Roleček, Jan; Sutcliffe, Laura M. E.; Terzi, Massimo; Winkler, Manuela; Wu, Jianshuang; Aćić, Svetlana; Acosta, Alicia T. R.; Afif, Elias; Akasaka, Munemitsu; Alatalo, Juha M.; Aleffi, Michele; Aleksanyan, Alla; Ali, Arshad; Apostolova, Iva; Ashouri, Parvaneh; Bátori, Zoltán; Baumann, Esther; Becker, Thomas; Bello, Francesco; Belonovskaya, Elena; Benito Alonso, José Luis; Berastegi, Asun; Bergamini, Ariel; Bhatta, Kuber Prasad; Bonini, Ilaria; Büchler, Marc‐Olivier; Budzhak, Vasyl; Bueno, Álvaro; Buldrini, Fabrizio; Campos, Juan Antonio; Cancellieri, Laura; Carboni, Marta; Ceulemans, Tobias; Chiarucci, Alessandro; Chocarro, Cristina; Conti, Luisa; Csergő, Anna Mária; Cykowska‐Marzencka, Beata; Czarniecka‐Wiera, Marta; Czarnocka‐Cieciura, Marta; Czortek, Patryk; Danihelka, Jiří; Deák, Balázs; Demeter, László; Deng, Lei; Diekmann, Martin; Dolezal, Jiri; Dolnik, Christian; Dřevojan, Pavel; Dupré, Cecilia; Ecker, Klaus; Ejtehadi, Hamid; Erschbamer, Brigitta; Etayo, Javier; Etzold, Jonathan; Farkas, Tünde; Farzam, Mohammad; Fayvush, George; Fernández Calzado, María Rosa; Finckh, Manfred; Fjellstad, Wendy; Fotiadis, Georgios; García‐Magro, Daniel; García‐Mijangos, Itziar; Gavilán, Rosario G.; Germany, Markus; Ghafari, Sahar; Giusso del Galdo, Gian Pietro; Grytnes, John‐Arvid; Güler, Behlül; Gutiérrez‐Girón, Alba; Helm, Aveliina,

  2021.

  Benchmarking plant diversity of Palaearctic grasslands and other open habitats.

  Journal of Vegetation Science.

  32(4), pp. e13050.

  Available from: https://doi.org/10.1111/jvs.13050

• Zhang, Jinhui; Gillet, François; Bartha, Sándor; Alatalo, Juha Mikael; Biurrun, Idoia; Dembicz, Iwona; Grytnes, John‐Arvid; Jaunatre, Renaud; Pielech, Remigiusz; Van Meerbeek, Koenraad; Vynokurov, Denys; Widmer, Stefan; Aleksanyan, Alla; Bhatta, Kuber Prasad; Campos, Juan Antonio; Czortek, Patryk; Dolezal, Jiri; Essl, Franz; García‐Mijangos, Itziar; Guarino, Riccardo; Güler, Behlül; Hájek, Michal; Kuzemko, Anna; Li, Frank Yonghong; Löbel, Swantje; Moradi, Halime; Naqinezhad, Alireza; Silva, Vasco; Šmerdová, Eva; Sonkoly, Judit; Stifter, Simon; Talebi, Amir; Török, Péter; White, Hannah; Wu, Jianshuang; Dengler, Jürgen,

  2021.

  Scale dependence of species–area relationships is widespread but generally weak in Palaearctic grasslands.

  Journal of Vegetation Science.

  32(3), pp. e13044.

  Available from: https://doi.org/10.1111/jvs.13044

• Backhaus, Lindsay; Albert, Georg; Cuchietti, Anibal; Jaimes Nino, Luisa Maria; Fahs, Nina; Lisner, Aleš; Kolář, Vojtěch; Kermavnar, Janez; Widmer, Stefan; Zimmermann, Zita; Rofrics, Nora; de Bello, Francesco; Lepš, Jan; García Medina, Nagore,

  2021.

  Shift from trait convergence to divergence along old field succession.

  Journal of Vegetation Science.

  32(2), pp. 1-13.

  Available from: https://doi.org/10.1111/jvs.12986

• Keller, Sabrina; Babbi, Manuel; Widmer, Stefan; Gehler, Jamyra; Hausmann, Sonja; Berg, Christian; Landucci, Flavia; Schwager, Patrick; Sumberova, Katerina; Dengler, Jürgen,

  2020.

  Determination of habitat requirements of the glacial relict Nuphar pumila as basis for successful (re-)introductions.

  Tuexenia.

  40, pp. 309-326.

  Available from: https://doi.org/10.14471/2020.40.022

• Widmer, Stefan; Riesen, Matthias; Krüsi, Bertil; Dengler, Jürgen; Billeter, Regula,

  2020.

  Wenn Gämsen Schafe ersetzen : Fallstudie zu den Auswirkungen auf die Diversität von alpinen Rasen.

  Tuexenia.

  40, pp. 225-246.

  Available from: https://doi.org/10.14471/2020.40.013

• Biurrun, Idoia; Burrascano, Sabina; Dembicz, Iwona; Guarino, Riccardo; Kapfer, Jutta; Pielech, Remigiusz; Babbi, Manuel; Hepenstrick, Daniel; Widmer, Stefan; Dengler, Jürgen; et al.,

  2019.

  GrassPlot v. 2.00 : first update on the database of multi-scale plant diversity in Palaearctic grasslands.

  Palaearctic Grasslands.

  (44), pp. 26-47.

  Available from: https://doi.org/10.21570/EDGG.PG.44.26-47

• Frei, Eva Silvia; Widmer, Stefan; Babbi, Manuel; Krüsi, Bertil,

  2019.

  Extensive Bekämpfung des Adlerfarns an einem voralpinen Trockenstandort.

  Naturschutz und Landschaftsplanung.

  51(8), pp. 374-381.

• Dengler, Jürgen; Widmer, Stefan; Staubli, Eline; Babbi, Manuel; Gehler, Jamyra; Hepenstrick, Daniel; Bergamini, Ariel; Billeter, Regula; Boch, Steffen; Rohrer, Sven; Dembicz, Iwona,

  2019.

  Dry grasslands of the central valleys of the Alps from a European perspective : the example of Ausserberg (Valais, Switzerland).

  Hacquetia.

  18(2), pp. 155-177.

  Available from: https://doi.org/10.2478/hacq-2019-0008

• Widmer, Stefan; Frei, Eva Silvia; Babbi, Manuel; Krüsi, Bertil,

  2018.

  Extensive Bekämpfung des Adlerfarns fördert die floristische Vielfalt.

  Bauhinia.

  2018(27).

  Available from: https://doi.org/10.21256/zhaw-4939

• Babbi, Manuel; Widmer, Stefan; Blattner, Marcel; Krüsi, Bertil,

  2016.

  Waldrandaufwertungen : Einfluss von Exposition und Wüchsigkeit des Standorts.

  Schweizerische Zeitschrift für Forstwesen.

  167(5), pp. 286-293.

  Available from: https://doi.org/10.3188/szf.2016.0286

• Billeter, Regula; Widmer, Stefan; Riesen, Matthias; Krüsi, Bertil; Dengler, Jürgen; Thiel, Dominik,

  2023.

  Biodiversitätsforschung im Jagdbanngebiete Graue Hörner (Kt. SG).

  N+L Inside.

  2023(3), pp. 29-33.

  Available from: https://kbnl.ch/2023/08/31/biodiversitaetsforschung-im-jagdbanngebiet-graue-hoerner-kt-sg/

• Dengler, Jürgen; Babbi, Manuel; Widmer, Stefan,

  2021.

  Square Foot Project gestartet : Wandel der Grünlanddiversität in der Schweiz über ein Jahrhundert.

  IUNR Magazin.

  2021(1), pp. 13.

  Available from: https://doi.org/10.21256/zhaw-22288

• Babbi, Manuel; Widmer, Stefan; Frei, Eva Silvia,

  2020.

  Erfolgreiche extensive Bekämpfung des invasiven Adlerfarns.

  N+L Inside.

  2020(2), pp. 28-31.

  Available from: https://doi.org/10.21256/zhaw-20114

• Babbi, Manuel; Widmer, Stefan; Ochsner, Pascal; Krüsi, Bertil,

  2017.

  Hilfe von oben : Erfassung von Adlerfarnbeständen mit Drohnen.

  Vierteljahrsschrift der Naturforschenden Gesellschaft in Zürich.

  162(3/4), pp. 10-11.

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