Tejshree Tiwari

Coordinator, Department of Forest Ecology and Management, joint staff

E-mail

My work focuses on how climate, land use, and catchment landscapes influence biogeochemical processes in boreal ecosystems.

Presentation

My research focuses on how climate, land use, and catchment landscapes influence biogeochemical processes in boreal ecosystems. I develop process-based models and work with long-term monitoring data to understand how carbon, nutrients, and water move through forested catchments.

I am based at the Department of Forest Ecology and Management at the Swedish University of Agricultural Sciences (SLU) and work closely with the Krycklan Catchment Study, a long-term research infrastructure for hydrology and biogeochemistry in northern Sweden.

Research

My research explores the interactions between biological, chemical, and hydrological processes that regulate carbon and nutrient cycling in boreal landscapes.

A central theme is scaling: linking small-scale ecosystem processes to catchment-scale responses and identifying the landscape features that control water quality along the flow path from soils to streams and rivers.

To address these questions I combine:

field measurements and long-term monitoring
spatial analysis and GIS
mechanistic and conceptual modelling

This work contributes to understanding how climate variability, land use, and landscape structure influence water quality and ecosystem functioning in northern forest landscapes.

Selected publications

Tiwari, T., R.A. Sponseller, H. Laudon (2022). The emerging role of drought as a regulator of dissolved organic carbon in boreal landscapes.
https://doi.org/10.1038/s41467-022-32839-3
Tiwari, T., H. Laudon (2025). Trends in hydroclimate extremes: How changes in winter affect water storage and baseflow.
https://doi.org/10.5194/hess-29-4055-2025
Tiwari, T., R.A. Sponseller, H. Laudon (2019). Contrasting responses in dissolved organic carbon to extreme climate events from adjacent boreal landscapes in Northern Sweden.
https://doi.org/10.1088/1748-9326/ab23d4
Tiwari, T., I. Buffam, R.A. Sponseller, H. Laudon (2017). Inferring scale-dependent processes influencing stream water biogeochemistry from headwater to sea.
https://doi.org/10.1002/lno.10738

Environment analysis

My work integrates field observations, laboratory analyses, and modelling to understand how carbon, nutrients, and water move through boreal landscapes.

As coordinator for the Krycklan Catchment, I contribute to the management and quality control of long-term monitoring datasets. These datasets, including climate data from Svartberget, are curated and shared through the SITES data portal to support open and reproducible research.

Teaching

Organise the PhD course “Watershed Ecology and Biogeochemistry”, offered through the Krycklan Catchment Study, which provides advanced training in field methods, data analysis, and ecosystem modeling for northern landscapes.

Infrastructure and coordination

Krycklan Catchment Study
A long-term research infrastructure for hydrology, biogeochemistry, and ecosystem processes in boreal forests.

BIOGEOMON 2026
Organiser of BIOGEOMON 2026 at SLU Umeå (8–11 June 2026), an international conference advancing collaboration in biogeochemical monitoring and ecosystem research.