Explanipedia

High-energy systems are underrepresented in global porewater studies of sandy beach aquifers Open

Gudrun Massmann, Janek Greskowiak, Julius Degenhardt, Bert Engelen, Moritz Holtappels , et al. · 2025

Aquifers beneath sandy beaches act as land-ocean conduits for groundwater and are active biogeochemical reactors modifying chemical fluxes across the land-sea interface. Subterranean estuaries of high-energy beaches with large tidal and wa…

Interstitial microbial communities of coastal sediments are dominated by Nanoarchaeota Open

Simone Brick, Jutta Niggemann, Anja Reckhardt, Martin Könneke, Bert Engelen · 2025

Microbial communities in subsurface coastal sediments are highly diverse and play an important role in nutrient cycling. While the major fraction of microorganisms in sandy sediments lives as epipsammon (attached to sand grains), only a sm…

Imprint of incomplete combustion processes on the water column of the anthropogenic-pressured Baltic Sea Open

Tassiana Soares Gonçalves Serafim, Detlef E. Schulz‐Bull, Christopher P. Rüger, Thorsten Dittmar, Jutta Niggemann , et al. · 2025

This study evaluates the distribution and sources of thermogenic organic matter in the Baltic Sea water column, focusing on polycyclic aromatic hydrocarbons (PAH), dissolved black carbon (DBC), and the imprint of thermogenic organic matter…

High Energy Systems are Underrepresented in Global Porewater Studies of Sandy Beach Aquifers Open

Gudrun Massmann, Janek Greskowiak, Julius Degenhardt, Bert Engelen, Moritz Holtappels , et al. · 2025

Different dissolved organic matter sources sustain microbial life in a sandy beach subterranean estuary – an incubation study Open

Grace Abarike, Simone Brick, Bert Engelen, Jutta Niggemann · 2024

In subterranean estuaries (STE), fresh and saline groundwater introduce dissolved organic matter (DOM) of different origin. This DOM serves as substrate for microorganisms that thrive in the STE. In high-energy beaches with dynamic porewat…

The sandy beach subterranean estuary as a potential organic carbon sink Open

Kojo Amoako, Grace Abarike, Hannelore Waska, Jutta Niggemann, Thorsten Dittmar · 2024

Subterranean estuaries (STEs) beneath sandy beaches are biogeochemical reactors that can modify the chemical composition of fresh groundwater and recirculating seawater. Compared to surface estuaries, the mechanisms underlying the transfor…

Different dissolved organic matter (DOM) sources sustain microbial life in beach subterranean estuary Open

Grace Abarike, Simone Brick, Bert Engelen, Jutta Niggemann · 2024

Dissolved organic matter (DOM) is diverse in composition and serves as substrate for microbial metabolism. Within subterranean estuaries (STEs), DOM is introduced from different sources along the groundwater flow paths. These different DOM…

Imprint of Incomplete Combustion Processes on the Water Column of the Anthropogenic-Pressured Baltic Sea Open

Tassiana S. G. Serafim, Detlef E. Schulz‐Bull, Christopher P. Rüger, Thorsten Dittmar, Jutta Niggemann , et al. · 2024

Optical Characterization of Dissolved Organic Matter Derived from Black Carbon Particles Emitted by Ships: Implication for the Fluorescence Detection of Fuel Combustion Pollutions in Marine Waters Open

Pauline L. Martinot, Catherine Guigue, Léa Guyomarc’h, Xavier Maro, Nguyen Hoang Anh Chu , et al. · 2024

Disentangling Biological Transformations and Photodegradation Processes from Marine Dissolved Organic Matter Composition in the Global Ocean Open

Sarah K. Bercovici, Maren Wiemers, Thorsten Dittmar, Jutta Niggemann · 2023

Dissolved organic matter (DOM) holds the largest amount of organic carbon in the ocean, with most of it residing in the deep for millennia. Specific mechanisms and environmental conditions responsible for its longevity are still unknown. M…

Processes in the Surface Ocean Regulate Dissolved Organic Matter Distributions in the Deep Open

Sarah K. Bercovici, Thorsten Dittmar, Jutta Niggemann · 2023

Marine dissolved organic matter (DOM) is a major global carbon pool, consisting of thousands of compounds with distinct lifetimes. While marine DOM persists for millennia, its molecular and isotopic composition imply that it is dynamic on …

Deciphering sources and processing of dissolved black carbon in coastal seas Open

Hongyan Bao, Jutta Niggemann, Moge Du, Weiqiang Zhao, Dekun Huang , et al. · 2023

Dissolved black carbon (DBC) is the largest known slow‐cycling organic carbon pool in the ocean; yet, its sources and processing in the coastal seas remain poorly understood. To address this knowledge gap, we conducted a study in the East …

The diatom Thalassiosira rotula induces distinct growth responses and colonization patterns of Roseobacteraceae , Flavobacteria and Gammaproteobacteria Open

Den Quoc Tran, Felix Milke, Jutta Niggemann, Meinhard Simon · 2023

Diatoms as important phytoplankton components interact with and are colonized by heterotrophic bacteria. This colonization has been studied extensively in the past but a distinction between the bacterial colonization directly on diatom cel…

The DynaDeep observatory – a unique approach to study high-energy subterranean estuaries Open

Gudrun Massmann, Grace Abarike, Kojo Amoako, Felix Auer, Thomas H. Badewien , et al. · 2023

Subterranean estuaries are connective zones between inland aquifers and the open sea where terrestrial freshwater and circulating seawater mix and undergo major biogeochemical changes. They are biogeochemical reactors that modify groundwat…

Land-use changes in Amazon and Atlantic rainforests modify organic matter and black carbon compositions transported from land to the coastal ocean Open

Tassiana Soares Gonçalves Serafim, Marcelo Gomes de Almeida, Gérard Thouzeau, Emma Michaud, Jutta Niggemann , et al. · 2023

Insights to the short-term atmospheric deposition impacts on the biology and chemistry of the sea surface microlayer in the Adriatic Sea coastal region Open

Andrea Milinković, Abra Penezić, Ana Cvitešić Kušan, Saranda Bakija Alempijević, Valentina Gluščić , et al. · 2023

The Mediterranean basin continuously receives anthropogenic aerosols from industrial and domestic activities from the European region, as well as high rates of aeolian material in the form of mineral dust from northern Africa. Moreover, co…

Spatial dynamics of marine dissolved organic matter in the Benguela upwelling system Open

Gonzalo V. Gomez‐Saez, Ömer K. Coskun, Yanik Oertel, Jutta Niggemann, Thorsten Dittmar , et al. · 2023

Marine dissolved organic matter (DOM) is one of the largest active carbon pools on Earth, storing one thousand times more carbon than all living organisms in the ocean combined, and similar amounts of carbon than all CO2 in the atmospheric…

Supporting Dataset for "Beyond Hydrology: Exploring Factors Influencing the Seasonal Variation in the Molecular Composition of Riverine Dissolved Organic Matter" Open

Xiaoqian Zhan, Hongyan Bao, Jutta Niggemann, Weiqiang Zhao, Nengwang Chen , et al. · 2023

This is the supplementary file for the manuscript "Beyond Hydrology: Exploring Factors Influencing the Seasonal Variation in the Molecular Composition of Riverine Dissolved Organic Matter". The file containing the relative intensity of eac…

Supporting Dataset for "Beyond Hydrology: Exploring Factors Influencing the Seasonal Variation in the Molecular Composition of Riverine Dissolved Organic Matter" Open

Xiaoqian Zhan, Hongyan Bao, Jutta Niggemann, Weiqiang Zhao, Nengwang Chen , et al. · 2023

This is the supplementary file for the manuscript "Beyond Hydrology: Exploring Factors Influencing the Seasonal Variation in the Molecular Composition of Riverine Dissolved Organic Matter". The file containing the relative intensity of eac…

Supporting Dataset for "Beyond Hydrology: Exploring Factors Influencing the Seasonal Variation in the Molecular Composition of Riverine Dissolved Organic Matter" Open

Xiaoqian Zhan, Hongyan Bao, Jutta Niggemann, Weiqiang Zhao, Nengwang Chen , et al. · 2023

This is the supplementary file for the manuscript "Beyond Hydrology: Exploring Factors Influencing the Seasonal Variation in the Molecular Composition of Riverine Dissolved Organic Matter". The file containing the relative intensity of eac…

Supporting data for "Deciphering sources and processing of dissolved black carbon in coastal seas" Open

Hongyan Bao, Jutta Niggemann, Moge Du, Weiqiang Zhao, Dekun Huang , et al. · 2023

These two datasets are supporting data for the manuscript "Deciphering sources and processing of dissolved black carbon (DBC) in coastal seas". Supplementary dataset 01 (Data S1) includes the concentration of DBC_BPCA and the mol…

Supporting data for "Deciphering sources and processing of dissolved black carbon (DBC) in coastal seas" Open

Hongyan Bao, Jutta Niggemann, Moge Du, Weiqiang Zhao, Dekun Huang , et al. · 2023

These two datasets are supporting data for the manuscript "Deciphering sources and processing of dissolved black carbon (DBC) in coastal seas". Dataset 01 includes the concentration of DBC_BPCA and the molecular composition of DB…

Zooplankton‐derived dissolved organic matter composition and its bioavailability to natural prokaryotic communities Open

Daniele De Corte, Marta M. Varela, A. Louro, Sarah K. Bercovici, J. Valencia-Vila , et al. · 2022

Zooplankton grazing onphytoplankton promotes the release of particulate and dissolved organic matter (DOM) into the water column and therefore plays a key role in organic matter cycling in aquatic systems. Prokaryotes are the main DOM cons…

Correction: Evidence from molecular marker and FT-ICR-MS analyses for the source and transport of dissolved black carbon under variable water discharge of a subtropical Estuary Open

Weiqiang Zhao, Hongyan Bao, Dekun Huang, Jutta Niggemann, Thorsten Dittmar , et al. · 2022

Impact of Quorum Sensing and Tropodithietic Acid Production on the Exometabolome of Phaeobacter inhibens Open

Sujatha Srinivas, Martine Berger, Thorsten Brinkhoff, Jutta Niggemann · 2022

Microbial interactions shape ecosystem diversity and chemistry through production and exchange of organic compounds, but the impact of regulatory mechanisms on production and release of these exometabolites is largely unknown. We studied t…

Deciphering the Virus Signal Within the Marine Dissolved Organic Matter Pool Open

Mara Elena Heinrichs, Benedikt Heyerhoff, Berin S. Arslan-Gatz, Michael Seidel, Jutta Niggemann , et al. · 2022

Viruses are ubiquitously distributed in the marine environment, influencing microbial population dynamics and biogeochemical cycles on a large scale. Due to their small size, they fall into the oceanographic size-class definition of dissol…

The detection of bacterial exometabolites in marine dissolved organic matter through ultrahigh‐resolution mass spectrometry Open

Sarah K. Bercovici, Thorsten Dittmar, Jutta Niggemann · 2022

Bacteria play a key role in sustaining the chemodiversity of marine dissolved organic matter (DOM), yet there is limited direct evidence of a major contribution of bacterial exometabolites to the DOM pool. This study tests whether molecula…

Diurnal dynamics at the sea-atmosphere interface: The Central Adriatic campaign Open

Ana Cvitešić Kušan, Andrea Milinković, Abra Penezić, Saranda Bakija Alempijević, Jelena Godrijan , et al. · 2022

Nowadays, various environmental compartments are under increasing pressure from anthropogenic impact, and we as a society, have a duty, to understand the extent of the changing environment and how this may affect the functioning o…

Land-Use Changes in Amazon and Atlantic Rainforests Modify Organic Matter and Black Carbon Compositions Transported from Land to the Coastal Ocean Open

Tassiana S. G. Serafim, Marcelo Gomes de Almeida, Gérard Thouzeau, Emma Michaud, Michael Seidel , et al. · 2022

Carbon assimilating fungi from surface ocean to subseafloor revealed by coupled phylogenetic and stable isotope analysis Open

William D. Orsi, Aurèle Vuillemin, Ömer K. Coskun, Paula Rodríguez, Yanik Oertel , et al. · 2021

Fungi are ubiquitous in the ocean and hypothesized to be important members of marine ecosystems, but their roles in the marine carbon cycle are poorly understood. Here, we use 13C DNA stable isotope probing coupled with phylogenetic analys…

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