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Postdoctoral researcher in Ecology @sgn.one
Valentin Graf









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Our latest nutcracker paper is out! In a collaborative effort between @sgn.one and @vogelwarte.bsky.social we show how bird age can affect seed dispersal 🐥🌱 #ProcB @royalsocietypublishing.org Avian seed dispersal function is age dependent doi.org/10.1098/rspb... @matthiastschumi.bsky.social
Bielefeld University seeks a postdoc for a 6-year scientific assistant position in Animal Behaviour, starting March 2026. Apply by Sept 10, 2025. More info: www.uni-bielefeld.de/fakultaeten/biologie/forschung/arbeitsgruppen/behaviour #job
Raise a glass to Dr Rabeau, celebrating his viva today in Silwood bar. 🥂 Thanks to Rich Gill and Ilya Maclean for examining. 4 amazing Drs recently graduating from the lab in this pic, and 2 pre-Drs 🥰 @jyang19.bsky.social @ra-barber.bsky.social
Excited to share my final PhD paper! We show how mother tree and seed position within an elevational gradient drive seedling recruitment in the Alps🌱⛰️ You can read it here: doi.org/10.1111/1365-2745.70303 @journalofecology.bsky.social @sgn.one @wslresearch.bsky.social @aaronkauffeldt.bsky.social
11mo
Seed predation by rodents suppresses recruitment of a bird-dispersed tree at its upper range limit | Journal of Animal Ecology | besjournals.onlineli... | #ornithology 🪶🌍🧪
Happy to share that the first paper of my PhD is out! We developed a trait-based framework 🌱🦜 to quantify how plant-frugivore interactions and animal movement shape plant functional connectivity—the dispersal of seeds between habitat patches. royalsocietypublishing.org/doi/10.1098/...
So, this spring I am starting a pilot study searching for spotted nutcracker nests. The ultimate goal is to GPS-tag nestlings… apparently occupied nests are notoriously difficult to find (in case you have ever found one, please let me know!). Getting inspired at the natural history museum in Bern 😊
10mo
Dec 18, 2024
2mo
🌳Climate-driven range shifts in alpine plants require recruitment beyond tree lines. For P. cembra, seed origin & maternal reproductive traits drive seedling establishment, potentially outweighing microclimate & maternal genetics @valgra.bsky.social @aaronkauffeldt.bsky.social 👉️ buff.ly/NyNPcJb
Last week, the BE were well represented at the @britishecolsoc.bsky.social #conference, offering insights into our program, individual projects, and results - either at the info booth or through multiple talks. Thank you for the great interest and such a wonderful #event in vibrant #Liverpool! 🥳
Check this out @valgra.bsky.social , @vsvanbergen.bsky.social & @steffopp.bsky.social Wondering whether this is indeed a nutcracker nest!?
11mo
Mar 6, 2025
Feb 2, 2025
1mo
Dec 16, 2024
Feb 2, 2025
Valentin Graf
EvolDir
Joseph Tobias
Valentin Graf
Matthias Tschumi 🦉
Anna R Landim
BOU
Matthias Tschumi 🦉
Journal of Ecology
Biodiversity Exploratories
With a team of over 50 people, the different research groups study animal behaviour within the framework of the four questions of Tinbergen, both in the lab and in the field. Current model systems include laboratory studies on zebra finches (
www.uni-bielefeld.de
Animal Behaviour - Bielefeld University
So, this spring I am starting a pilot study searching for spotted nutcracker nests. The ultimate goal is to GPS-tag nestlings… apparently occupied nests are notoriously difficult to find (in case you have ever found one, please let me know!). Getting inspired at the natural history museum in Bern 😊
Feb 2, 2025
Matthias Tschumi 🦉