I am interested in the application of state of the art analytical chemistry techniques to better understand complex biogeochemical processes in freshwater ecosystems. Recently, I have been investigating the chemical and microbial interactions between dissolved and particulate organic matter using a combination of mass spectrometry, compound-specific stable isotopes and amplicon sequencing approaches. I am also interested in natural resources conservation as I have been previously involved in multiple initiatives regarding integrated water resources management.
Currently, I am involved in the “River emissions of greenhouse gases from warming landscapes (RIV-ESCAPE)” project, which aims to provide a better understanding of the mechanisms controlling the release of greenhouse gases (CO2 and CH4) from rivers. My role focuses on investigating how the changes in the composition and age of organic matter, due to ongoing and future warming, could impact the release of CO2 and CH4. The project is funded by a ERC consolidator grant awarded to Prof. Robert Hilton.
Before joining the University of Oxford, I completed a BSc in Chemistry at the National University of Costa Rica and a PhD in Chemistry at the University of Bristol.
View Selected Publications
- Reay, M. K., Marsden, K. A., Powell, S., Rivera, L. M., Chadwick, D. R., Jones, D. L., & Evershed, R. P. (2023). The soil microbial community and plant biomass differentially contribute to the retention and recycling of urinary-N in grasslands. Soil Biology and Biochemistry, 180. https://doi.org/10.1016/j.soilbio.2023.109011
- Mena-Rivera, L., Lloyd, C. E. M., Reay, M. K., Goodall, T., Read, D. S., Johnes, P. J., & Evershed, R. P. (2022). Tracing carbon and nitrogen microbial assimilation in suspended particles in freshwaters. Biogeochemistry, 164(1), 277-293. https://doi.org/10.1007/s10533-022-00915-x
- Lloyd, C. E. M., Mena-Rivera, L. A., Pemberton, J. A., Johnes, P. J., Jones, D. L., Yates, C. A., Brailsford, F. L., Glanville, H. C., McIntyre, C. A., & Evershed, R. P. (2022). Characterisation of riverine dissolved organic matter using a complementary suite of chromatographic and mass spectrometric methods. Biogeochemistry, 164(1), 29-52. https://doi.org/10.1007/s10533-022-00913-z