Publications

Scientific Journals

Escaped sunflowers (a) closely resembling the cultivated sunflower with one single large head in oil pumpkin and (b), (c) with head formation in the upper part in oil pumpkin and potato, respectively. Weedy sunflowers in oil pumpkin (d, e) and in cultivated sunflower (f, g) showing distinct characteristics, i.e., plant height, strong and deep branching, multiple heads, discoloration of heads and stems (anthocyanin accumulation). ©Swen Follak, Franz Essl.

Follak, S., Glaser, M., Griesbacher, A., & Essl, F. (2024). Crops gone wild – weedy Helianthus annuus L . in Austria. 13(3), 565–576.


Farmers (n = 164) perceptions of changes in the weed flora: (a) Farmers agreement with statements about change and (b) their agreement with potential reasons for these changes. Gray line indicates 50%

Glaser, M., Essl, F., & Follak, S. (2024). Austrian farmers perception of new weeds. Plant-Environment Interactions, 5(1), 1–11. https://doi.org/10.1002/pei3.10129


Number of species decreasing and increasing in occupancy grouped by their environmental preferences regarding (a) nutrients (n=343), (b) soil reaction (pH) (n=346), (c) temperature (n=343) and (d) soil moisture (n=354).

Glaser, M., Dullinger, S., Moser, D., Wessely, J., Chytrý, M., Lososová, Z., Axmanová, I., Berg, C., Bürger, J., Buholzer, S., Buldrini, F., Chiarucci, A., Follak, S., Küzmič, F., Meyer, S., Pyšek, P., Richner, N., Šilc, U., Steinkellner, S., … Essl, F. (2024). Pronounced turnover of vascular plant species in Central European arable fields over 90 years. Agriculture, Ecosystems & Environment, 361(October 2023), 108798. https://doi.org/10.1016/j.agee.2023.108798


Distribution of vegetation plots in the AgriWeedClim database.

Glaser, M. et al. (2022) ‘AgriWeedClim database: A repository of vegetation plot data from Central European arable habitats over 100 years’, Applied Vegetation Science, 25, p. e12675. doi: 10.1111/avsc.12675.

Data contributions and requests can be communicated directly to Michael Glaser.

Other Media

(c) Swen Follak

Follak, S (2022) “Der Kompass-Lattich – ein aufkommendes Unkraut?” Der Pflanzenarzt 75 (9-10), p. 18-19