ArticleThe ISME journal2015
Significant N₂ fixation by heterotrophs, photoheterotrophs and heterocystous cyanobacteria in two temperate estuaries.
Article in The ISME journal, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers.
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Who cites it
50 citing papers in PubMed.
- Composition of non-cyanobacterial diazotrophs in suspended and sinking particles is driven by productivity phase.Microbiology spectrum · 2026Article
- Unraveling the Complex Planktonic Microbial Community in the Amundsen Sea, Southern Ocean.Microbial ecology · 2026Article
- Unravelling the molecular diversity of marine cyanobacterial communities in the lagoon of Nouméa (New Caledonia): impact of a cyclonic event.ISME communications · 2026Article
- DiazoTIME: a metabolically-resolved reference database of nitrogen-fixing microbial genomes.Microbiology resource announcements · 2025Article
- Significant contribution of the unicellular cyanobacterium UCYN-B to oceanic nitrogen fixation.National science review · 2025Article
- Particle-associated NScience advances · 2025Article
- Emergence and evolution of heterocyte glycolipid biosynthesis enabled specialized nitrogen fixation in cyanobacteria.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Dynamics of diazotroph particle colonization in the Arctic Ocean.The ISME journal · 2025Article
- Autecology of an oscillating population of a novel host-associatedISME communications · 2025Article
- Puzzling out the ecological niche construction for nitrogen fixers in a coastal upwelling system.ISME communications · 2025Article
- Nitrogen Fixation and Microbial Communities Associated with Decomposing Seagrass Leaves in Temperate Coastal Waters.Microbial ecology · 2024Article
- Phagotrophy in the nitrogen-fixing haptophyte Braarudosphaera bigelowii.Environmental microbiology reports · 2024Article
- Stochastic Processes Dominate in the Water Mass-Based Segregation of Diazotrophs in a High Arctic Fjord (Svalbard).Microbial ecology · 2023Article
- Non-cyanobacterial diazotrophs: global diversity, distribution, ecophysiology, and activity in marine waters.FEMS microbiology reviews · 2023Review
- Open ocean and coastal strains of the N2-fixing cyanobacterium UCYN-A have distinct transcriptomes.PloS one · 2023Article
- Size-fractionated NFrontiers in microbiology · 2023Article
- Cell-specific measurements show nitrogen fixation by particle-attached putative non-cyanobacterial diazotrophs in the North Pacific Subtropical Gyre.Nature communications · 2022Article
- Chemotaxis may assist marine heterotrophic bacterial diazotrophs to find microzones suitable for NThe ISME journal · 2022Article
- Influence of organic ammonium derivatives on the equilibria between NHScientific reports · 2022Article
- Dark Diazotrophy during the Late Summer in Surface Waters of Chile Bay, West Antarctic Peninsula.Microorganisms · 2022Article
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7 authors.
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No grant is acknowledged in the PubMed record.
Abstract
Nitrogen (N) fixation is fueling planktonic production in a multitude of aquatic environments. In meso- and poly-haline estuaries, however, the contribution of N by pelagic N₂ fixation is believed to be insignificant due to the high input of N from land and the presumed absence of active N₂-fixing organisms. Here we report N₂ fixation rates, nifH gene composition and nifH gene transcript abundance for key diazotrophic groups over 1 year in two contrasting, temperate, estuarine systems: Roskilde Fjord (RF) and the Great Belt (GB) strait. Annual pelagic N₂ fixation rates averaged 17 and 61 mmol N m(-2) per year at the two sites, respectively. In RF, N₂ fixation was mainly accompanied by transcripts related to heterotrophic (for example, Pseudomonas sp.) and photoheterotrophic bacteria (for example, unicellular diazotrophic cyanobacteria group A). In the GB, the first of two N₂ fixation peaks coincided with a similar nifH-expressing community as in RF, whereas the second peak was synchronous with increased nifH expression by an array of diazotrophs, including heterotrophic organisms as well as the heterocystous cyanobacterium Anabaena. Thus, we show for the first time that significant planktonic N₂ fixation takes place in mesohaline, temperate estuaries and that the importance of heterotrophic, photoheterotrophic and photosynthetic diazotrophs is clearly variable in space and time.
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