ArticleNature communications2023
Hydrodynamic regimes modulate nitrogen fixation and the mode of diazotrophy in Lake Tanganyika.
Article in Nature communications, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Seasonality of lake microbial denitrification and its sensitivity to climate warming.Nature microbiology · 2026Article
- Bringing the uncultivated microbial majority of freshwater ecosystems into culture.Nature communications · 2025Article
- Phylogenomic and Pangenomic Assessment of a Mediterranean Strain of Raphidiopsis raciborskii Extends Knowledge of the Global Distribution and Characteristics of a Potentially Toxigenic Cyanobacterium.Environmental microbiology reports · 2025Article
- The microbiology of Uganda's large freshwater lakes experiencing anthropogenic and climatic perturbations: why it matters-a review.Proceedings. Biological sciences · 2025Review
- Taxonomic and functional metagenomic assessment of a Dolichospermum bloom in a large and deep lake south of the Alps.FEMS microbiology ecology · 2024Article
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Authors and funding
13 authors.
Funding
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Abstract
The factors that govern the geographical distribution of nitrogen fixation are fundamental to providing accurate nitrogen budgets in aquatic environments. Model-based insights have demonstrated that regional hydrodynamics strongly impact nitrogen fixation. However, the mechanisms establishing this physical-biological coupling have yet to be constrained in field surveys. Here, we examine the distribution of nitrogen fixation in Lake Tanganyika - a model system with well-defined hydrodynamic regimes. We report that nitrogen fixation is five times higher under stratified than under upwelling conditions. Under stratified conditions, the limited resupply of inorganic nitrogen to surface waters, combined with greater light penetration, promotes the activity of bloom-forming photoautotrophic diazotrophs. In contrast, upwelling conditions support predominantly heterotrophic diazotrophs, which are uniquely suited to chemotactic foraging in a more dynamic nutrient landscape. We suggest that these hydrodynamic regimes (stratification versus mixing) play an important role in governing both the rates and the mode of nitrogen fixation.
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