Sonja Kay

1.5k total citations
31 papers, 759 citations indexed

About

Sonja Kay is a scholar working on Global and Planetary Change, Nature and Landscape Conservation and Forestry. According to data from OpenAlex, Sonja Kay has authored 31 papers receiving a total of 759 indexed citations (citations by other indexed papers that have themselves been cited), including 18 papers in Global and Planetary Change, 12 papers in Nature and Landscape Conservation and 12 papers in Forestry. Recurrent topics in Sonja Kay's work include Agroforestry and silvopastoral systems (12 papers), Land Use and Ecosystem Services (11 papers) and Forest ecology and management (6 papers). Sonja Kay is often cited by papers focused on Agroforestry and silvopastoral systems (12 papers), Land Use and Ecosystem Services (11 papers) and Forest ecology and management (6 papers). Sonja Kay collaborates with scholars based in Switzerland, United Kingdom and Portugal. Sonja Kay's co-authors include Félix Herzog, Anil Graves, Josep Crous-Durán, J.H.N. Palma, Paul Burgess, Gerardo Moreno, Stéphanie Aviron, Silvestre García de Jalón, Erich Szerencsits and Anastasia Pantera and has published in prestigious journals such as Environmental Science & Technology, Journal of Cleaner Production and Nature Climate Change.

In The Last Decade

Sonja Kay

30 papers receiving 740 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Sonja Kay Switzerland 15 409 230 150 107 102 31 759
Josep Crous-Durán Portugal 14 447 1.1× 397 1.7× 165 1.1× 133 1.2× 145 1.4× 17 824
Guillaume Xavier Rousseau Brazil 18 339 0.8× 147 0.6× 165 1.1× 202 1.9× 141 1.4× 54 989
José Javier Santiago-Freijanes Spain 13 347 0.8× 429 1.9× 154 1.0× 145 1.4× 123 1.2× 20 763
Jaconette Mirck Germany 12 268 0.7× 287 1.2× 147 1.0× 93 0.9× 158 1.5× 21 686
José V. Roces‐Díaz Spain 19 588 1.4× 120 0.5× 113 0.8× 65 0.6× 134 1.3× 28 822
K. Mantzanas Greece 8 225 0.6× 259 1.1× 127 0.8× 81 0.8× 149 1.5× 16 538
John F. Munsell United States 15 458 1.1× 98 0.4× 69 0.5× 40 0.4× 94 0.9× 66 820
Andrea Pisanelli Italy 15 268 0.7× 361 1.6× 141 0.9× 118 1.1× 97 1.0× 25 722
Serigne Kandji Kenya 6 461 1.1× 482 2.1× 268 1.8× 286 2.7× 181 1.8× 9 1.3k
Muhammad Ibrahim Costa Rica 11 390 1.0× 162 0.7× 43 0.3× 118 1.1× 135 1.3× 45 810

Countries citing papers authored by Sonja Kay

Since Specialization
Citations

This map shows the geographic impact of Sonja Kay's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Sonja Kay with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Sonja Kay more than expected).

Fields of papers citing papers by Sonja Kay

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Sonja Kay. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Sonja Kay. The network helps show where Sonja Kay may publish in the future.

Co-authorship network of co-authors of Sonja Kay

This figure shows the co-authorship network connecting the top 25 collaborators of Sonja Kay. A scholar is included among the top collaborators of Sonja Kay based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Sonja Kay. Sonja Kay is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Herzog, Félix, et al.. (2025). Temperate agroforestry for tree carbon storage in Switzerland: 10 years of biophysical and social monitoring. Zürcher Hochschule für Angewandte Wissenschaften digital collection (Zurich University of Applied Sciences). 2(2). 100055–100055. 1 indexed citations
2.
Gosme, Marie, Michael den Herder, Jakub Houška, et al.. (2025). AgroforesTreeAdvice: a decision support tool combining heterogeneous knowledge resources for tree species selection in agroforestry systems. Agroforestry Systems. 99(5). 1 indexed citations
3.
Burgess, Paul, Marie Gosme, Michael den Herder, et al.. (2024). Exploring agroforestry limiting factors and digitalization perspectives: insights from a european multi-actor appraisal. Agroforestry Systems. 98(7). 2499–2515. 5 indexed citations
4.
Adde, Antoine, Adrienne Grêt‐Regamey, Antoine Guisan, et al.. (2024). Identifying focus zones for the conservation and promotion of priority birds in Swiss farmland. Conservation Science and Practice. 7(1).
5.
Suškevičs, Monika, Sonja Kay, Johannes Schuler, et al.. (2023). Stakeholder perceptions of agricultural landscape services, biodiversity, and drivers of change in four European case studies. Ecosystem Services. 64. 101563–101563. 7 indexed citations
6.
Yeo, Samantha, Maya Almaraz, Damien Beillouin, et al.. (2023). Priority science can accelerate agroforestry as a natural climate solution. Nature Climate Change. 13(11). 1179–1190. 50 indexed citations
7.
Kay, Sonja, Johannes Schuler, Tobias Conradt, et al.. (2023). Towards diverse agricultural land uses: socio-ecological implications of European agricultural pathways for a Swiss orchard region. Regional Environmental Change. 23(3). 97–97. 5 indexed citations
8.
Schüpbach, Béatrice & Sonja Kay. (2023). Validation of a visual landscape quality indicator for agrarian landscapes using public participatory GIS data. Landscape and Urban Planning. 241. 104906–104906. 5 indexed citations
9.
Hugenschmidt, Johannes & Sonja Kay. (2023). Unmasking adaption of tree root structure in agroforestry Systems in Switzerland using GPR. Geoderma Regional. 34. e00659–e00659. 8 indexed citations
10.
Herzog, Félix, et al.. (2023). Validating Farmland Biodiversity Life Cycle Assessment at the Landscape Scale. Environmental Science & Technology. 57(25). 9184–9193. 3 indexed citations
11.
Topp, K., Johannes Schuler, Sheila Alves, et al.. (2023). Transition to legume-supported farming in Europe through redesigning cropping systems. Agronomy for Sustainable Development. 43(1). 32 indexed citations
12.
Kay, Sonja, et al.. (2022). Ecological–Economic Modelling of Traditional Agroforestry to Promote Farmland Biodiversity with Cost-Effective Payments. Sustainability. 14(9). 5615–5615. 11 indexed citations
13.
Jeanneret, Philippe, Stéphanie Aviron, Audrey Alignier, et al.. (2021). Agroecology landscapes. Landscape Ecology. 36(8). 2235–2257. 76 indexed citations
14.
Rolo, Víctor, José V. Roces‐Díaz, Mario Torralba, et al.. (2021). Mixtures of forest and agroforestry alleviate trade-offs between ecosystem services in European rural landscapes. Ecosystem Services. 50. 101318–101318. 35 indexed citations
15.
Santiago-Freijanes, José Javier, Michael den Herder, Paul Burgess, et al.. (2020). Agroforestry as a sustainable land use option to reduce wildfires risk in European Mediterranean areas. Agroforestry Systems. 95(5). 919–929. 65 indexed citations
16.
Giannitsopoulos, Michail L., Anil Graves, Paul Burgess, et al.. (2020). Whole system valuation of arable, agroforestry and tree-only systems at three case study sites in Europe. Journal of Cleaner Production. 269. 122283–122283. 20 indexed citations
17.
Kay, Sonja, Elisabeth Kühn, Matthias Albrecht, et al.. (2019). Agroforestry can enhance foraging and nesting resources for pollinators with focus on solitary bees at the landscape scale. Agroforestry Systems. 94(2). 379–387. 28 indexed citations
18.
Jalón, Silvestre García de, Paul Burgess, Jorge Curiel Yuste, et al.. (2019). Dry deposition of air pollutants on trees at regional scale: A case study in the Basque Country. Agricultural and Forest Meteorology. 278. 107648–107648. 33 indexed citations
19.
Kay, Sonja, Anil Graves, J.H.N. Palma, et al.. (2019). Agroforestry is paying off – Economic evaluation of ecosystem services in European landscapes with and without agroforestry systems. Ecosystem Services. 36. 100896–100896. 124 indexed citations
20.
Fagerholm, Nora, Mario Torralba, Gerardo Moreno, et al.. (2019). Cross-site analysis of perceived ecosystem service benefits in multifunctional landscapes. Global Environmental Change. 56. 134–147. 96 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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