Abstract
Among the many pathways through which human activity can shape biodiversity patterns, modification of biotic interactions tends to be overlooked. Here we show how interacting anthropogenic, biotic and abiotic factors drive the continental-scale expansion of a highly adaptive mesocarnivore, the golden jackal. Using a dataset of playback surveys conducted across Europe, we find that the presence of an apex predator, the grey wolf, is the primary factor limiting jackal occurrence. However, a human presence acts as a shield that considerably reduces the strength of wolf suppression and provides jackals refuge near people. Our fitted distribution model predicts that jackals have the potential to expand until they occupy 75% of the continent, almost six times larger than their current range. The ongoing recovery of wolves in Europe could reduce suitable areas for expanding jackals by up to 18% in the near future, but a persistent human-shield effect, coupled with climate warming and landscape modification, is expected to sustain continued jackal expansion across the continent. Our results illustrate how cascading anthropogenic impacts can hamper the ecological benefits provided by apex predator recovery.
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Data availability
The data100 required to reproduce the statistical analyses of the study are available via Zenodo at https://doi.org/10.5281/zenodo.18771950 (ref. 100).
Code availability
The R code necessary to fit the model, extract variable importance and generate fitted response curves is available via Zenodo at https://doi.org/10.5281/zenodo.18771950 (ref. 100).
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Acknowledgements
We are very grateful to all the people involved in the jackal surveys, especially M. Berce, S. Lamut, M. Sanchez and students of the University of Ljubljana, Kaposvár University, Szent István University, the Hungarian University of Agriculture and Life Sciences and volunteers of nongovernmental organization Dinaricum. We express our sincere gratitude to A. Gipe-Lazarou for his valuable assistance in figure design. Finally, we thank L. Boitani, N. Bonnot, M. Hewison, J. Linnell and N. Morellet for their insightful comments on previous versions of this manuscript. N.R. was supported by a Harvard University Graduate Fellowship and a Fondazione Edmund Mach International Doctoral Programme Fellowship for part of this project. M.K. was supported by the Slovenian Research and Innovation Agency (grant numbers P4-0059, J1-50013). L.M. was supported by the NextGenerationEU in the framework of the National Biodiversity Future Center. F.C. contributed to this work partly under the Institut de recherche pour le développement Fellowship at Fondation IMéRA, Institute for Advanced Studies at Aix-Marseille Université. J.H. was a recipient of the Doctoral Fellowship of the Austrian Academy of Sciences at the Institute of Wildlife Biology and Game management. I.A.-P. received funding support from the National Museum of Natural History at Bulgarian Academy of Sciences and the Program ‘Young Scientist’ of the Bulgarian Academy of Sciences for data collection in Bulgaria. D.C. and A. Penezić received funding support from the Ministry of Education, Science and Technological Development of the Republic of Serbia, grant number 451-03-68/2022-14/ 200178. J.L. was supported by the RRF-2.3.1-21-2022-00014 (National Multidisciplinary Laboratory for Climate Change). M.Š. was supported by the Czech Academy of Sciences in frame of the programme Strategy AV21 (Strategie AV21 Krize biodiversity) and the research aim of the Czech Academy of Sciences (grant number 68081766). P.U. was supported by the Cultural and Educational Grant Agency of the Ministry of Education, Research, Development and Youth of the Slovak Republic (grant numbers 036UMB-4/2018 and 003UMB-4/2023).
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N.R. and M.K. conceived the manuscript. N.R. conducted the analyses with support from L.M. and D.W. N.R. and M.K. wrote the first manuscript draft with inputs from C.C.W., L.M., D.W., F.A., F.C. and J.H. Co-authors contributed data and assisted with writing the final version of the manuscript.
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Extended data
Extended Data Fig. 1
Predicted response of jackals to the distance from nearest water body (in km).
Extended Data Fig. 2 Uncertainty in model predictions within the calibration area.
Model outputs from 1,000 simulations are presented for the calibration area, showing the median predicted distribution (see Fig. 3 in the Main Text, a), the standard error of the mean prediction (b), and the lower (0.025) and upper (0.975) confidence bounds (c-d). The observed core distribution of golden jackals in Europe is indicated with black hatching19.
Extended Data Fig. 3 Uncertainty in continental model predictions.
Model outputs from 1,000 simulations show the median predicted distribution (see Fig. 3 in the Main Text, a), the standard error of the mean prediction (b), and the lower (0.025) and upper (0.975) confidence bounds (c-d).
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Supplementary Figs. 1–5, data collection, results and Tables 1–6.
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Ranc, N., Wilmers, C.C., Maiorano, L. et al. Human shielding from wolves facilitates jackal expansion across Europe. Nat Ecol Evol (2026). https://doi.org/10.1038/s41559-026-03060-y
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DOI: https://doi.org/10.1038/s41559-026-03060-y