Aya S. Klos

The paper investigates microbial N2O reduction in sulfidic waters, finding that Proterozoic oceans likely had lower N2O emissions due to active N2O reduction under euxinic conditions.

The paper investigates how ecological constraints and evolutionary trade-offs influence nitrogen fixation across different habitats by analyzing microbial genomes and environmental factors.

This study uses phylogenomic analysis to trace the timing of nutrient limitation genes across Earth's history, showing phosphorus genes emerged early, nitrogen later, and iron-related siderophores possibly as early as the Archean.

This study uses phylogenomic analysis to show that molybdenum-dependent enzymes existed as early as 3.4 billion years ago, suggesting Mo was bioavailable in ancient oceans.