Research interests

• Community assembly in decomposers
• Carbon and Nitrogen cycling in terrestrial ecosystems
• Microbiomes and global change
• Antimicrobial resistance (AMR) in terrestrial ecosystems 
• Ecosystem restoration through microbial pathways 

Selected Publications

For a full publication list, see Google Scholar:  scholar.google.com/citations

1.  Roy, S., Dumont, M. G., Bradley, J. A., & Hernández, M. (2025) Microbial interactions between climate warming and antimicrobial resistance threaten soil carbon storage and global health. The ISME Journal wraf220 DOI: 10.1093/ismejo/wraf220 

2.  Roy, S., & Bagchi, S. (2025) Decoupling between functional diversity and stability of decomposer functions in natural and agroecosystems can favour resistance. Ecology and Evolution e72190DOI: 10.1002/ece3.72190 

3.  Roy, S., King, G., & Hernández, M. (2025) Classification of MAGs associated with trace gas metabolism in volcanic soils named following SeqCode rules. Systematic and Applied Microbiology 48 (4), 126622DOI: 10.1016/j.syapm.2025.126622

4.  Roy, S., Dawson, R. A., Bradley, J. A., & Hernández, M. (2025) Prevalence and dynamics of antimicrobial resistance in pioneer and developing Arctic soils. BMC Microbiology 25, 50 DOI: 10.1186/s12866-025-03745-7 

5.  Roy, S., Karapurkar, J., Baidya, P., Jose, M., & Bagchi, S. (2023) Community composition, and not species richness of microbes, influences decomposer functional diversity in soil. Soil Biology and Biochemistry 187, 109225  DOI: 10.1016/j.soilbio.2023.109225

6.  Hernández, M., Roy, S., Keevil, C. W., & Dumont, M. G. (2023) Identification of diverse antibiotic resistant bacteria in agricultural soil with H₂¹⁸O stable isotope probing and metagenomics. Environmental Microbiome 18, 34 DOI: 10.1186/s40793-023-00489-7

7.  Roy, S., Naidu, DGT., & Bagchi, S. (2023) Functional substitutability of native herbivores by livestock for soil carbon stock is mediated by microbial decomposers. Global Change Biology 29 (8), 1-15 DOI: 10.1111/gcb.16600 

8.  Naidu, DGT., Roy, S., & Bagchi, S. (2022) Loss of grazing by large mammalian herbivores can destabilize the soil carbon pool. Proceedings of the National Academy of Sciences 119 (43), 1-7 DOI: 10.1073/pnas.2211317119

9. Roy, S., & Bagchi, S. (2022) Large mammalian herbivores and the paradox of soil carbon in grazing ecosystems: role of microbial decomposers and their enzymes. Ecosystems 25, 976–988 DOI: 10.1007/s10021-021-00696-8 

CV