Ecological Networks

Peer-reviewed publications

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1. Perrelet, K., Cook, L., Reji Chacko, M., Altermatt, F., and Moretti, M. Food webs on green roofs are unique but less robust than their ground-level counterparts. Journal of Applied Ecology (2026). https://doi.org/10.1111/1365-2664.70306​

2. Perrelet, K., Cook, L., Reji Chacko, M, Altermatt, F., and Moretti, M. Urbanisation drives the decoupling, simplification, and homogenization of aquatic and terrestrial food webs. Ecology Letters. (2025). https://doi.org/10.1111/ele.70212

3. Reji Chacko, M., Moretti, M. and Frey, D. A comprehensive dataset on pollinator diversity, visitation rates, individual-based traits, and pollination success across four plant species in an urban garden experiment. Data in Brief (2025). https://doi.org/10.1016/j.dib.2025.112013

4. Reji Chacko, M., Albouy, C., Altermatt, F., Boussange, V., Brändle, M., Farwig, N., Gossner, M. M., Ho, H.-C., Joss, A., Neff, F., and Pellissier, L. Species loss in key habitats accelerates regional food web disruption. Communications Biology 8, 988 (2025). https://doi.org/10.1038/s42003-025-08396-y

5. Reji Chacko, M., Albouy, C., Altermatt, F., Casanelles-Abella, J., Brändle, M., Boussange, V., Campell, F., Ellis, W. N., Fopp, F., Gossner, M. M., Ho, H.-C., Joss, A., Kipf, P., Neff, F., Petrović, A., Prié, V., Tomanović, Ž., Zimmerli, N., and Pellissier, L. A species-level multi-trophic metaweb for Switzerland. Scientific Data 12, 1164 (2025). https://doi.org/10.1038/s41597-025-05487-7

6. Mayor, S., Altermatt, F., Crowther, T., Hordjik, I., Oehri, J., Reji Chacko, M., Schaepman, M., Schmid, B., and Niklaus, P. Landscape diversity promotes landscape functioning in North America. Communications Earth and Environment 6, 28 (2025). https://doi.org/10.1038/s43247-025-02000-1

7. Reji Chacko, M., Altermatt, F., Fopp, F., Guisan, A., Keggin, T., Lyet, A., Rey, P.-L., Richards, E., Valentini, A., Waldock, C., and Pellissier, L. Catchment-based sampling of river eDNA integrates terrestrial and aquatic biodiversity of alpine landscapes. Oecologia (2023). https://doi.org/10.1007/s00442-023-05428-4

8. Reji Chacko, M, M., Plekhanova, E., Oehri, J., and Schaepman-Strub, G. Will current protected areas harbour refugia for threatened Arctic vegetation types until 2050? A first assessment. Arctic, Antarctic and Alpine Research 55, 2203478 (2023). https://doi.org/10.1080/15230430.2023.2203478

9. Heim, R., Iturrate-Garcia, M., Plekhanova, E., Reji Chacko, M., and Schaepman-Strub, G. Arctic deciduous shrubs demonstrate a leaf-level shift from a resource-conservative to a resource-acquisitive strategy with increasing soil nutrient availability. Journal of Geophysical Research: Biogeosciences 128, e2023JG007657 (2023). https://doi.org/10.1029/2023JG007657

10. Ho, H.-C., Brodersen, J., Gossner, M., Graham, C., Kaeser, S., Reji Chacko, M., Seehausen, O., Zimmermann, N., Pellissier, L., and Altermatt, F. Blue and green food webs respond differently to elevation and land use. Nature Communications 13, 6415 (2022). https://doi.org/10.1038/s41467-022-34132-9

11. Oehri, J., … Reji Chacko, M... Schaepman-Strub, G. Vegetation type is an important predictor of the Arctic summer land surface energy budget. Nature Communications 13, 6379 (2022). https://doi.org/10.1038/s41467-022-34049-3

12. Krstovic, M., Brown, L., Reji Chacko, M., and Trinh, B. Grade 9 Astronomy Study: Interests of Boys and Girls Studying Astronomy at Fletcher’s Meadow Secondary School. Astronomy Education Review. 7(2), 18–24 (2009). https://doi.org/10.3847/aer2008017

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Preprints

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1. Reji Chacko, M., Frey, D., Albrecht, M., Ghazoul, J., and Moretti, M. No one-size-fits-all: trait-dependent effects of local plant diversity on pollinators and pollination services along an urban densification gradient. Authorea (2025). https://doi.org/10.22541/au.175373156.65965423/v1. Under Review.

2. Casanelles Abella, J., Frey, M., Helms, M., Moretti, M., Reji Chacko, M., Zanetta, A., and Fournier, B. Gardeners’ Contributions to Urban Biodiversity: A Multi-Taxa Assessment of α- and β-Functional and Taxonomic Diversity in a Densifying City. Research Square. (2026). https://doi.org/10.21203%2Frs.3.rs-9085796%2Fv1

3. Zhang, Y., … Reji Chacko, M., … Altermatt, F. et al. Globally unified analyses of riverine eDNA reveals common associations of fish biodiversity with drainage characteristics. bioRxiv (2025). https://doi.org/10.1101/2025.09.16.676481.

4. Zhang, Y., … Reji Chacko, M., … Altermatt, F. et al. Integrated reanalysis of global fish eDNA datasets shows robustness and congruence of biodiversity conclusions. bioRxiv (2025). https://doi.org/10.1101/2025.09.24.676958.

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In preparation

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1. Reji Chacko, M., Casanelles Abella, J., Casciano, G., Fournier, B., Frey, D., Perrelet, K., and Moretti, M. Local habitat quality only partially buffers multi-trophic food-web robustness along an urban density gradient.

2. Reji Chacko, M., Albouy, C., Altermatt, F., Fopp, F., Gossner, M.M., Ho, H-C., and Pellissier, L. Elevation and land use gradients drive food web structure and trophic connectivity. In preparation. https://doi.org/10.3929/ethz-b-000628135

3. ​Fopp, F., Albouy, C., Dahito, M-A., Reji Chacko, M., and Pellissier, L. Swisscatchment: mapping biodiversity at the Swiss scale and catchment resolution.