I am a microbial ecologist interested in the ecology of N-cycling microbes. I do experimental work in the field and the lab, and in silico studies using large-scale genomic and metagenomic data. I address fundamental questions regarding their ecology and to some extent also evolution of their key catalytic enzymes. The fundamental research links to my applied research on nutrient cycling, climate change, and water treatment, with relevance for agricultural and environmental engineering.

Sara Hallin
Swedish University of Agricultural Sciences
Key Publications
Microbial controls of nitrogen retention and N2O production in cropping systems supporting soil carbon accrual
Soil Biology and Biochemistry, 2025
Resistance and resilience of co-occurring nitrifying microbial guilds to drying-rewetting stress in soil
Soil Biology and Biochemistry, 2025
Plant–soil feedbacks in mixed pine-oak Mediterranean forests under drought conditions
Plant and Soil, 2025
The Positive Effects of Soil Organic Carbon on European Cereal Yields Level Off at 1.4%
Journal of Sustainable Agriculture and Environment, 2024