ArticleEnvironmental science & technology2017
Molecular Fractionation of Dissolved Organic Matter in a Shallow Subterranean Estuary: The Role of the Iron Curtain.
Article in Environmental science & technology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
13 citing papers in PubMed, 125 citations in OpenAlex.
- Review
- Dissolved Organic Matter in the Coastal Ocean Is Structurally More Diverse Than in Terrestrial Systems, as Shown in an Amazonian Mangrove Estuary.Environmental science & technology · 2026Article
- Coastal rest during the COVID-19 pandemic enhances microbial community stability and metabolic potential in a subterranean estuary.NPJ biofilms and microbiomes · 2025Article
- The Beach Bioreactor: Unraveling the Anomaly of Intensive Remineralization above a Deep Oxycline.Environmental science & technology · 2025Article
- Iron Promotes the Retention of Terrigenous Dissolved Organic Matter in Subtidal Permeable Sediments.Environmental science & technology · 2024Article
- Bioactivity profile of dissolved organic matter and its relation to molecular composition.Natural products and bioprospecting · 2023Article
- Using fixed-potential electrodes to quantify iron and manganese redox cycling in upland soils.Biogeochemistry · 2023Article
- Impact of high Fe-concentrations on microbial community structure and dissolved organics in hydrothermal plumes: an experimental study.Scientific reports · 2022Article
- Cross-Shore and Depth Zonations in Bacterial Diversity Are Linked to Age and Source of Dissolved Organic Matter across the Intertidal Area of a Sandy Beach.Microorganisms · 2021Article
- Millennial scale persistence of organic carbon bound to iron in Arctic marine sediments.Nature communications · 2021Article
- Does Arctic warming reduce preservation of organic matter in Barents Sea sediments?Philosophical transactions. Series A, Mathematical, physical, and engineering sciences · 2020Article
- A Review of Environmental Contamination and Health Risk Assessment of Wastewater Use for Crop Irrigation with a Focus on Low and High-Income Countries.International journal of environmental research and public health · 2018Review
- Microbial Interactions With Dissolved Organic Matter Drive Carbon Dynamics and Community Succession.Frontiers in microbiology · 2018Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors at 1 institution in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Iron that precipitates under aerobic conditions in natural aquatic systems scavenges dissolved organic matter (DOM) from solution. Subterranean estuaries (STEs) are of major importance for land-ocean biogeochemical fluxes. Their specific redox boundaries, coined the "iron curtain" due to the abundance of precipitated iron(III) (oxy)hydroxides, are hot spots for the removal and redissolution of iron, associated nutrients, and DOM. We used ultra-high-resolution electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry to molecularly characterize the iron-coagulating fractions of 32 groundwater and seawater DOM samples along a salinity gradient from a shallow STE on Spiekeroog Island, North Sea, Germany, and linked our findings to trace metal and nutrient concentrations. We found systematic iron coagulation of large (>450 Da), oxygen-rich, and highly aromatic DOM molecules of terrestrial origin. The extent of coagulation increased with growing terrestrial influence along the salinity gradient. Our study is the first to show that the iron curtain may be capable of retaining terrigenous DOM fractions in marine sediments. We hypothesize that the iron curtain serves as an inorganic modulator for the supply of DOM from groundwaters to the sea, and that the STE has the potential to act as a temporal storage or even sink for terrigenous aromatic DOM compounds.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.