Articles | Volume 16, issue 18
https://doi.org/10.5194/bg-16-3543-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-16-3543-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
19 Sep 2019
Research article |
| 19 Sep 2019
| 19 Sep 2019
Particulate organic matter controls benthic microbial N retention and N removal in contrasting estuaries of the Baltic Sea
Ines Bartl
CORRESPONDING AUTHOR
Department of Biological Oceanography, Leibniz Institute for Baltic
Sea Research Warnemünde, Seestr. 15, 18119 Rostock, Germany
Dana Hellemann
Ecosystems and Environment Research Programme, University of Helsinki,
00014 Helsinki, Finland
Christophe Rabouille
Laboratoire des Sciences du Climat et de l'Environnement, UMR
CEA-CNRS-UVSQ and IPSL, Av. de la Terrasse, 91198 Gif sur Yvette, France
Kirstin Schulz
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine
Research, Klußmannstr. 3d, 27570 Bremerhaven, Germany
Petra Tallberg
Ecosystems and Environment Research Programme, University of Helsinki,
00014 Helsinki, Finland
Susanna Hietanen
Ecosystems and Environment Research Programme, University of Helsinki,
00014 Helsinki, Finland
Maren Voss
Department of Biological Oceanography, Leibniz Institute for Baltic
Sea Research Warnemünde, Seestr. 15, 18119 Rostock, Germany
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EGUsphere, https://doi.org/10.5194/egusphere-2025-1846, https://doi.org/10.5194/egusphere-2025-1846, 2025
This preprint is open for discussion and under review for Geoscientific Model Development (GMD).
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Benthic biogeochemical models are essential for simulating seafloor carbon cycling and climate feedbacks, yet vary widely in structure and assumptions. This paper introduces SedBGC_MIP, a community initiative to compare existing models, refine key processes, and assess uncertainty. We highlight discrepancies through case studies and introduce needs including observational benchmarks. Ultimately, we seek to improve climate and resource projections.
Nicolas Metzl, Jonathan Fin, Claire Lo Monaco, Claude Mignon, Samir Alliouane, Bruno Bombled, Jacqueline Boutin, Yann Bozec, Steeve Comeau, Pascal Conan, Laurent Coppola, Pascale Cuet, Eva Ferreira, Jean-Pierre Gattuso, Frédéric Gazeau, Catherine Goyet, Emilie Grossteffan, Bruno Lansard, Dominique Lefèvre, Nathalie Lefèvre, Coraline Leseurre, Sébastien Petton, Mireille Pujo-Pay, Christophe Rabouille, Gilles Reverdin, Céline Ridame, Peggy Rimmelin-Maury, Jean-François Ternon, Franck Touratier, Aline Tribollet, Thibaut Wagener, and Cathy Wimart-Rousseau
Earth Syst. Sci. Data, 17, 1075–1100, https://doi.org/10.5194/essd-17-1075-2025, https://doi.org/10.5194/essd-17-1075-2025, 2025
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This work presents a new synthesis of 67 000 total alkalinity and total dissolved inorganic carbon observations obtained between 1993 and 2023 in the global ocean, coastal zones, and the Mediterranean Sea. We describe the data assemblage and associated quality control and discuss some potential uses of this dataset. The dataset is provided in a single format and includes the quality flag for each sample.
Sophie Hage, Megan L. Baker, Nathalie Babonneau, Guillaume Soulet, Bernard Dennielou, Ricardo Silva Jacinto, Robert G. Hilton, Valier Galy, François Baudin, Christophe Rabouille, Clément Vic, Sefa Sahin, Sanem Açikalin, and Peter J. Talling
Biogeosciences, 21, 4251–4272, https://doi.org/10.5194/bg-21-4251-2024, https://doi.org/10.5194/bg-21-4251-2024, 2024
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The land-to-ocean flux of particulate organic carbon (POC) is difficult to measure, inhibiting accurate modeling of the global carbon cycle. Here, we quantify the POC flux between one of the largest rivers on Earth (Congo) and the ocean. POC in the form of vegetation and soil is transported by episodic submarine avalanches in a 1000 km long canyon at up to 5 km water depth. The POC flux induced by avalanches is at least 3 times greater than that induced by the background flow related to tides.
Eva Ferreira, Stanley Nmor, Eric Viollier, Bruno Lansard, Bruno Bombled, Edouard Regnier, Gaël Monvoisin, Christian Grenz, Pieter van Beek, and Christophe Rabouille
Biogeosciences, 21, 711–729, https://doi.org/10.5194/bg-21-711-2024, https://doi.org/10.5194/bg-21-711-2024, 2024
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The study provides new insights by examining the short-term impact of winter floods on biogeochemical sediment processes near the Rhône River (NW Mediterranean Sea). This is the first winter monitoring of sediment and porewater in deltaic areas. The coupling of these data with a new model enables us to quantify the evolution of biogeochemical processes. It also provides new perspectives on the benthic carbon cycle in river deltas considering climate change, whereby flooding should intensify.
Mindaugas Žilius, Rūta Barisevičiūtė, Stefano Bonaglia, Isabell Klawonn, Elise Lorre, Tobia Politi, Irma Vybernaite-Lubiene, Maren Voss, and Paul Bukaveckas
EGUsphere, https://doi.org/10.5194/egusphere-2023-3054, https://doi.org/10.5194/egusphere-2023-3054, 2024
Preprint archived
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This study analyzes the mechanisms driving nitrate retention and elimination within a large estuarine system. Simultaneous measurements of pelagic and benthic processes provide insight into how nitrates are transformed. Finally, our findings are consistent with the paradigm that eutrophication favors a shift from benthic to pelagic-dominated processes.
Nicolas Metzl, Jonathan Fin, Claire Lo Monaco, Claude Mignon, Samir Alliouane, David Antoine, Guillaume Bourdin, Jacqueline Boutin, Yann Bozec, Pascal Conan, Laurent Coppola, Frédéric Diaz, Eric Douville, Xavier Durrieu de Madron, Jean-Pierre Gattuso, Frédéric Gazeau, Melek Golbol, Bruno Lansard, Dominique Lefèvre, Nathalie Lefèvre, Fabien Lombard, Férial Louanchi, Liliane Merlivat, Léa Olivier, Anne Petrenko, Sébastien Petton, Mireille Pujo-Pay, Christophe Rabouille, Gilles Reverdin, Céline Ridame, Aline Tribollet, Vincenzo Vellucci, Thibaut Wagener, and Cathy Wimart-Rousseau
Earth Syst. Sci. Data, 16, 89–120, https://doi.org/10.5194/essd-16-89-2024, https://doi.org/10.5194/essd-16-89-2024, 2024
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This work presents a synthesis of 44 000 total alkalinity and dissolved inorganic carbon observations obtained between 1993 and 2022 in the Global Ocean and the Mediterranean Sea at the surface and in the water column. Seawater samples were measured using the same method and calibrated with international Certified Reference Material. We describe the data assemblage, quality control and some potential uses of this dataset.
Daniel L. Pönisch, Anne Breznikar, Cordula N. Gutekunst, Gerald Jurasinski, Maren Voss, and Gregor Rehder
Biogeosciences, 20, 295–323, https://doi.org/10.5194/bg-20-295-2023, https://doi.org/10.5194/bg-20-295-2023, 2023
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Peatland rewetting is known to reduce dissolved nutrients and greenhouse gases; however, short-term nutrient leaching and high CH4 emissions shortly after rewetting are likely to occur. We investigated the rewetting of a coastal peatland with brackish water and its effects on nutrient release and greenhouse gas fluxes. Nutrient concentrations were higher in the peatland than in the adjacent bay, leading to an export. CH4 emissions did not increase, which is in contrast to freshwater rewetting.
Stanley I. Nmor, Eric Viollier, Lucie Pastor, Bruno Lansard, Christophe Rabouille, and Karline Soetaert
Geosci. Model Dev., 15, 7325–7351, https://doi.org/10.5194/gmd-15-7325-2022, https://doi.org/10.5194/gmd-15-7325-2022, 2022
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The coastal marine environment serves as a transition zone in the land–ocean continuum and is susceptible to episodic phenomena such as flash floods, which cause massive organic matter deposition. Here, we present a model of sediment early diagenesis that explicitly describes this type of deposition while also incorporating unique flood deposit characteristics. This model can be used to investigate the temporal evolution of marine sediments following abrupt changes in environmental conditions.
Felipe S. Freitas, Philip A. Pika, Sabine Kasten, Bo B. Jørgensen, Jens Rassmann, Christophe Rabouille, Shaun Thomas, Henrik Sass, Richard D. Pancost, and Sandra Arndt
Biogeosciences, 18, 4651–4679, https://doi.org/10.5194/bg-18-4651-2021, https://doi.org/10.5194/bg-18-4651-2021, 2021
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It remains challenging to fully understand what controls carbon burial in marine sediments globally. Thus, we use a model–data approach to identify patterns of organic matter reactivity at the seafloor across distinct environmental conditions. Our findings support the notion that organic matter reactivity is a dynamic ecosystem property and strongly influences biogeochemical cycling and exchange. Our results are essential to improve predictions of future changes in carbon cycling and climate.
Mindaugas Zilius, Irma Vybernaite-Lubiene, Diana Vaiciute, Donata Overlingė, Evelina Grinienė, Anastasija Zaiko, Stefano Bonaglia, Iris Liskow, Maren Voss, Agneta Andersson, Sonia Brugel, Tobia Politi, and Paul A. Bukaveckas
Biogeosciences, 18, 1857–1871, https://doi.org/10.5194/bg-18-1857-2021, https://doi.org/10.5194/bg-18-1857-2021, 2021
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In fresh and brackish waters, algal blooms are often dominated by cyanobacteria, which have the ability to utilize atmospheric nitrogen. Cyanobacteria are also unusual in that they float to the surface and are dispersed by wind-driven currents. Their patchy and dynamic distribution makes it difficult to track their abundance and quantify their effects on nutrient cycling. We used remote sensing to map the distribution of cyanobacteria in a large Baltic lagoon and quantify their contributions.
Jens Rassmann, Eryn M. Eitel, Bruno Lansard, Cécile Cathalot, Christophe Brandily, Martial Taillefert, and Christophe Rabouille
Biogeosciences, 17, 13–33, https://doi.org/10.5194/bg-17-13-2020, https://doi.org/10.5194/bg-17-13-2020, 2020
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In this paper, we use a large set of measurements made using in situ and lab techniques to elucidate the cause of dissolved inorganic carbon fluxes in sediments from the Rhône delta and its companion compound alkalinity, which carries the absorption capacity of coastal waters with respect to atmospheric CO2. We show that sediment processes (sulfate reduction, FeS precipitation and accumulation) are crucial in generating the alkalinity fluxes observed in this study by in situ incubation chambers.
Daniele Brigolin, Christophe Rabouille, Bruno Bombled, Silvia Colla, Salvatrice Vizzini, Roberto Pastres, and Fabio Pranovi
Biogeosciences, 15, 1347–1366, https://doi.org/10.5194/bg-15-1347-2018, https://doi.org/10.5194/bg-15-1347-2018, 2018
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We present the result of a study carried out in the north-western Adriatic Sea by combining two different types of models with field sampling. A mussel farm was taken as a local source of perturbation to the natural flux of particulate organic carbon to the sediment. Differences in fluxes were primarily associated with mussel physiological conditions. Although restricted, these changes in particulate organic carbon fluxes induced visible effects on sediment biogeochemistry.
Tom Jilbert, Eero Asmala, Christian Schröder, Rosa Tiihonen, Jukka-Pekka Myllykangas, Joonas J. Virtasalo, Aarno Kotilainen, Pasi Peltola, Päivi Ekholm, and Susanna Hietanen
Biogeosciences, 15, 1243–1271, https://doi.org/10.5194/bg-15-1243-2018, https://doi.org/10.5194/bg-15-1243-2018, 2018
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Iron is a common dissolved element in river water, recognizable by its orange-brown colour. Here we show that when rivers reach the ocean much of this iron settles to the sediments by a process known as flocculation. The iron is then used by microbes in coastal sediments, which are important hotspots in the global carbon cycle.
Jukka-Pekka Myllykangas, Tom Jilbert, Gunnar Jakobs, Gregor Rehder, Jan Werner, and Susanna Hietanen
Earth Syst. Dynam., 8, 817–826, https://doi.org/10.5194/esd-8-817-2017, https://doi.org/10.5194/esd-8-817-2017, 2017
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The deep waters of the Baltic Sea host an expanding
dead zone, where low-oxygen conditions favour the natural production of two strong greenhouse gases, methane and nitrous oxide. Oxygen is introduced into the deeps only during rare
salt pulses. We studied the effects of a recent salt pulse on Baltic greenhouse gas production. We found that where oxygen was introduced, methane was largely removed, while nitrous oxide production increased, indicating strong effects on greenhouse gas dynamics.
Julia M. Moriarty, Courtney K. Harris, Katja Fennel, Marjorie A. M. Friedrichs, Kehui Xu, and Christophe Rabouille
Biogeosciences, 14, 1919–1946, https://doi.org/10.5194/bg-14-1919-2017, https://doi.org/10.5194/bg-14-1919-2017, 2017
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In coastal aquatic environments, resuspension of sediment and organic material from the seabed into the overlying water can impact biogeochemistry. Here, we used a novel modeling approach to quantify this impact for the Rhône River delta. In the model, resuspension increased oxygen consumption during individual resuspension events, and when results were averaged over 2 months. This implies that observations and models that only represent calm conditions may underestimate net oxygen consumption.
Jens Rassmann, Bruno Lansard, Lara Pozzato, and Christophe Rabouille
Biogeosciences, 13, 5379–5394, https://doi.org/10.5194/bg-13-5379-2016, https://doi.org/10.5194/bg-13-5379-2016, 2016
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In situ O2 and pH measurements as well as determination of porewater concentrations of dissolved inorganic carbon, total alkalinity, sulfate and calcium have been measured in the sediments of the Rhône prodelta. Biogeochemical activity decreased with distance from the river mouth. Oxic processes decreased the carbonate saturation state (Ω) by lowering pH, whereas anaerobic organic matter degradation, dominated by sulfate reduction, was accompanied by increasing Ω and carbonate precipitation.
Monika Nausch, Lennart Thomas Bach, Jan Czerny, Josephine Goldstein, Hans-Peter Grossart, Dana Hellemann, Thomas Hornick, Eric Pieter Achterberg, Kai-Georg Schulz, and Ulf Riebesell
Biogeosciences, 13, 3035–3050, https://doi.org/10.5194/bg-13-3035-2016, https://doi.org/10.5194/bg-13-3035-2016, 2016
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Studies investigating the effect of increasing CO2 levels on the phosphorus cycle in natural waters are lacking although phosphorus often controls phytoplankton development in aquatic systems. The aim of our study was to analyse effects of elevated CO2 levels on phosphorus pool sizes and uptake. Therefore, we conducted a CO2-manipulation mesocosm experiment in the Storfjärden (western Gulf of Finland, Baltic Sea) in summer 2012. We compared the phosphorus dynamics in different mesocosm treatment
A. J. Paul, L. T. Bach, K.-G. Schulz, T. Boxhammer, J. Czerny, E. P. Achterberg, D. Hellemann, Y. Trense, M. Nausch, M. Sswat, and U. Riebesell
Biogeosciences, 12, 6181–6203, https://doi.org/10.5194/bg-12-6181-2015, https://doi.org/10.5194/bg-12-6181-2015, 2015
K.-K. Liu, C.-K. Kang, T. Kobari, H. Liu, C. Rabouille, and K. Fennel
Biogeosciences, 11, 7061–7075, https://doi.org/10.5194/bg-11-7061-2014, https://doi.org/10.5194/bg-11-7061-2014, 2014
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This paper provides background info on the East China Sea, Japan/East Sea and South China Sea and highlights major findings in the special issue on their biogeochemical conditions and ecosystem functions. The three seas are subject to strong impacts from human activities and/or climate forcing. Because these continental margins sustain arguably some of the most productive marine ecosystems in the world, changes in these stressed ecosystems may threaten the livelihood of a large human population.
F. Korth, B. Deutsch, C. Frey, C. Moros, and M. Voss
Biogeosciences, 11, 4913–4924, https://doi.org/10.5194/bg-11-4913-2014, https://doi.org/10.5194/bg-11-4913-2014, 2014
J. Unger, S. Endres, N. Wannicke, A. Engel, M. Voss, G. Nausch, and M. Nausch
Biogeosciences, 10, 1483–1499, https://doi.org/10.5194/bg-10-1483-2013, https://doi.org/10.5194/bg-10-1483-2013, 2013
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Atmospheric CO2 exchanges measured by eddy covariance over a temperate salt marsh and influence of environmental controlling factors
Characterization of the benthic biogeochemical dynamics after flood events in the Rhône River prodelta: a data–model approach
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The ballast effect of lithogenic matter and its influences on the carbon fluxes in the Indian Ocean
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Modelling the impact of riverine DON removal by marine bacterioplankton on primary production in the Arctic Ocean
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Quantification of iron-rich volcanogenic dust emissions and deposition over the ocean from Icelandic dust sources
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Our paper provides a quantification of plastic pollution in the Mediterranean region, and several policy scenario projections based on OECD data toward 2100. We estimate a 4-fold increase of Mediterranean marine plastic stock by 2060 and that the implementation of terrestrial plastic cleanup can significantly help to reduce plastic pollution transfer from land to sea. Our results provide insight for policy makers, which is needed at the regional scale in a context of the UNEP plastic treaty.
Ran Yan, Jun Wang, Weimin Ju, Xiuli Xing, Miao Yu, Meirong Wang, Jingye Tan, Xunmei Wang, Hengmao Wang, and Fei Jiang
Biogeosciences, 21, 5027–5043, https://doi.org/10.5194/bg-21-5027-2024, https://doi.org/10.5194/bg-21-5027-2024, 2024
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Our study reveals that the effects of the El Niño–Southern Oscillation (ENSO) and Indian Ocean Dipole (IOD) on China's gross primary production (GPP) are basically opposite, with obvious seasonal changes. Soil moisture primarily influences GPP during ENSO events (except spring) and temperature during IOD events (except fall). Quantitatively, China's annual GPP displays modest positive anomalies during La Niña and negative anomalies in El Niño years, driven by significant seasonal variations.
Jérémy Mayen, Pierre Polsenaere, Éric Lamaud, Marie Arnaud, Pierre Kostyrka, Jean-Marc Bonnefond, Philippe Geairon, Julien Gernigon, Romain Chassagne, Thomas Lacoue-Labarthe, Aurore Regaudie de Gioux, and Philippe Souchu
Biogeosciences, 21, 993–1016, https://doi.org/10.5194/bg-21-993-2024, https://doi.org/10.5194/bg-21-993-2024, 2024
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We deployed an atmospheric eddy covariance system to measure continuously the net ecosystem CO2 exchanges (NEE) over a salt marsh and determine the major biophysical drivers. Our results showed an annual carbon sink mainly due to photosynthesis of the marsh plants. Our study also provides relevant information on NEE fluxes during marsh immersion by decreasing daytime CO2 uptake and night-time CO2 emissions at the daily scale, whereas the immersion did not affect the annual marsh C balance.
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The study provides new insights by examining the short-term impact of winter floods on biogeochemical sediment processes near the Rhône River (NW Mediterranean Sea). This is the first winter monitoring of sediment and porewater in deltaic areas. The coupling of these data with a new model enables us to quantify the evolution of biogeochemical processes. It also provides new perspectives on the benthic carbon cycle in river deltas considering climate change, whereby flooding should intensify.
Louise C. V. Rewrie, Burkard Baschek, Justus E. E. van Beusekom, Arne Körtzinger, Gregor Ollesch, and Yoana G. Voynova
Biogeosciences, 20, 4931–4947, https://doi.org/10.5194/bg-20-4931-2023, https://doi.org/10.5194/bg-20-4931-2023, 2023
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After heavy pollution in the 1980s, a long-term inorganic carbon increase in the Elbe Estuary (1997–2020) was fueled by phytoplankton and organic carbon production in the upper estuary, associated with improved water quality. A recent drought (2014–2020) modulated the trend, extending the water residence time and the dry summer season into May. The drought enhanced production of inorganic carbon in the estuary but significantly decreased the annual inorganic carbon export to coastal waters.
Mona Norbisrath, Andreas Neumann, Kirstin Dähnke, Tina Sanders, Andreas Schöl, Justus E. E. van Beusekom, and Helmuth Thomas
Biogeosciences, 20, 4307–4321, https://doi.org/10.5194/bg-20-4307-2023, https://doi.org/10.5194/bg-20-4307-2023, 2023
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Total alkalinity (TA) is the oceanic capacity to store CO2. Estuaries can be a TA source. Anaerobic metabolic pathways like denitrification (reduction of NO3− to N2) generate TA and are a major nitrogen (N) sink. Another important N sink is anammox that transforms NH4+ with NO2− into N2 without TA generation. By combining TA and N2 production, we identified a TA source, denitrification, occurring in the water column and suggest anammox as the dominant N2 producer in the bottom layer of the Ems.
Kristof Van Oost and Johan Six
Biogeosciences, 20, 635–646, https://doi.org/10.5194/bg-20-635-2023, https://doi.org/10.5194/bg-20-635-2023, 2023
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The direction and magnitude of the net erosion-induced land–atmosphere C exchange have been the topic of a big scientific debate for more than a decade now. Many have assumed that erosion leads to a loss of soil carbon to the atmosphere, whereas others have shown that erosion ultimately leads to a carbon sink. Here, we show that the soil carbon erosion source–sink paradox is reconciled when the broad range of temporal and spatial scales at which the underlying processes operate are considered.
Yord W. Yedema, Francesca Sangiorgi, Appy Sluijs, Jaap S. Sinninghe Damsté, and Francien Peterse
Biogeosciences, 20, 663–686, https://doi.org/10.5194/bg-20-663-2023, https://doi.org/10.5194/bg-20-663-2023, 2023
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Terrestrial organic matter (TerrOM) is transported to the ocean by rivers, where its burial can potentially form a long-term carbon sink. This burial is dependent on the type and characteristics of the TerrOM. We used bulk sediment properties, biomarkers, and palynology to identify the dispersal patterns of plant-derived, soil–microbial, and marine OM in the northern Gulf of Mexico and show that plant-derived OM is transported further into the coastal zone than soil and marine-produced TerrOM.
Paul A. Bukaveckas
Biogeosciences, 19, 4209–4226, https://doi.org/10.5194/bg-19-4209-2022, https://doi.org/10.5194/bg-19-4209-2022, 2022
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Inland waters play an important role in the global carbon cycle by storing, transforming and transporting carbon from land to sea. Comparatively little is known about carbon dynamics at the river–estuarine transition. A study of tributaries of Chesapeake Bay showed that biological processes exerted a strong effect on carbon transformations. Peak carbon retention occurred during periods of elevated river discharge and was associated with trapping of particulate matter.
Frédérique M. S. A. Kirkels, Huub M. Zwart, Muhammed O. Usman, Suning Hou, Camilo Ponton, Liviu Giosan, Timothy I. Eglinton, and Francien Peterse
Biogeosciences, 19, 3979–4010, https://doi.org/10.5194/bg-19-3979-2022, https://doi.org/10.5194/bg-19-3979-2022, 2022
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Soil organic carbon (SOC) that is transferred to the ocean by rivers forms a long-term sink of atmospheric CO2 upon burial on the ocean floor. We here test if certain bacterial membrane lipids can be used to trace SOC through the monsoon-fed Godavari River basin in India. We find that these lipids trace the mobilisation and transport of SOC in the wet season but that these lipids are not transferred far into the sea. This suggests that the burial of SOC on the sea floor is limited here.
Niek Jesse Speetjens, George Tanski, Victoria Martin, Julia Wagner, Andreas Richter, Gustaf Hugelius, Chris Boucher, Rachele Lodi, Christian Knoblauch, Boris P. Koch, Urban Wünsch, Hugues Lantuit, and Jorien E. Vonk
Biogeosciences, 19, 3073–3097, https://doi.org/10.5194/bg-19-3073-2022, https://doi.org/10.5194/bg-19-3073-2022, 2022
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Climate change and warming in the Arctic exceed global averages. As a result, permanently frozen soils (permafrost) which store vast quantities of carbon in the form of dead plant material (organic matter) are thawing. Our study shows that as permafrost landscapes degrade, high concentrations of organic matter are released. Partly, this organic matter is degraded rapidly upon release, while another significant fraction enters stream networks and enters the Arctic Ocean.
Thorben Dunse, Kaixing Dong, Kjetil Schanke Aas, and Leif Christian Stige
Biogeosciences, 19, 271–294, https://doi.org/10.5194/bg-19-271-2022, https://doi.org/10.5194/bg-19-271-2022, 2022
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We investigate the effect of glacier meltwater on phytoplankton dynamics in Svalbard. Phytoplankton forms the basis of the marine food web, and its seasonal dynamics depend on the availability of light and nutrients, both of which are affected by glacier runoff. We use satellite ocean color, an indicator of phytoplankton biomass, and glacier mass balance modeling to find that the overall effect of glacier runoff on marine productivity is positive within the major fjord systems of Svalbard.
Miriam Tivig, David P. Keller, and Andreas Oschlies
Biogeosciences, 18, 5327–5350, https://doi.org/10.5194/bg-18-5327-2021, https://doi.org/10.5194/bg-18-5327-2021, 2021
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Nitrogen is one of the most important elements for life in the ocean. A major source is the riverine discharge of dissolved nitrogen. While global models often omit rivers as a nutrient source, we included nitrogen from rivers in our Earth system model and found that additional nitrogen affected marine biology not only locally but also in regions far off the coast. Depending on regional conditions, primary production was enhanced or even decreased due to internal feedbacks in the nitrogen cycle.
Kyra A. St. Pierre, Brian P. V. Hunt, Suzanne E. Tank, Ian Giesbrecht, Maartje C. Korver, William C. Floyd, Allison A. Oliver, and Kenneth P. Lertzman
Biogeosciences, 18, 3029–3052, https://doi.org/10.5194/bg-18-3029-2021, https://doi.org/10.5194/bg-18-3029-2021, 2021
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Using 4 years of paired freshwater and marine water chemistry from the Central Coast of British Columbia (Canada), we show that coastal temperate rainforest streams are sources of organic nitrogen, iron, and carbon to the Pacific Ocean but not the inorganic nutrients easily used by marine phytoplankton. This distinction may have important implications for coastal food webs and highlights the need to sample all nutrients in fresh and marine waters year-round to fully understand coastal dynamics.
Thomas S. Bianchi, Madhur Anand, Chris T. Bauch, Donald E. Canfield, Luc De Meester, Katja Fennel, Peter M. Groffman, Michael L. Pace, Mak Saito, and Myrna J. Simpson
Biogeosciences, 18, 3005–3013, https://doi.org/10.5194/bg-18-3005-2021, https://doi.org/10.5194/bg-18-3005-2021, 2021
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Better development of interdisciplinary ties between biology, geology, and chemistry advances biogeochemistry through (1) better integration of contemporary (or rapid) evolutionary adaptation to predict changing biogeochemical cycles and (2) universal integration of data from long-term monitoring sites in terrestrial, aquatic, and human systems that span broad geographical regions for use in modeling.
Marie-Sophie Maier, Cristian R. Teodoru, and Bernhard Wehrli
Biogeosciences, 18, 1417–1437, https://doi.org/10.5194/bg-18-1417-2021, https://doi.org/10.5194/bg-18-1417-2021, 2021
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Based on a 2-year monitoring study, we found that the freshwater system of the Danube Delta, Romania, releases carbon dioxide and methane to the atmosphere. The amount of carbon released depends on the freshwater feature (river branches, channels and lakes), season and hydrologic condition, affecting the exchange with the wetland. Spatial upscaling should therefore consider these factors. Furthermore, the Danube Delta increases the amount of carbon reaching the Black Sea via the Danube River.
Anna Rose Canning, Peer Fietzek, Gregor Rehder, and Arne Körtzinger
Biogeosciences, 18, 1351–1373, https://doi.org/10.5194/bg-18-1351-2021, https://doi.org/10.5194/bg-18-1351-2021, 2021
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The paper describes a novel, fully autonomous, multi-gas flow-through set-up for multiple gases that combines established, high-quality oceanographic sensors in a small and robust system designed for use across all salinities and all types of platforms. We describe the system and its performance in all relevant detail, including the corrections which improve the accuracy of these sensors, and illustrate how simultaneous multi-gas set-ups can provide an extremely high spatiotemporal resolution.
Joonas J. Virtasalo, Peter Österholm, Aarno T. Kotilainen, and Mats E. Åström
Biogeosciences, 17, 6097–6113, https://doi.org/10.5194/bg-17-6097-2020, https://doi.org/10.5194/bg-17-6097-2020, 2020
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Rivers draining the acid sulphate soils of western Finland deliver large amounts of metals (e.g. Cd, Co, Cu, La, Mn, Ni, and Zn) to the coastal sea. To better understand metal enrichment in the sea floor, we analysed metal contents and grain size distribution in nine sediment cores, which increased in the 1960s and 1970s and stayed at high levels afterwards. The enrichment is visible more than 25 km out from the river mouths. Organic aggregates are suggested as the key seaward metal carriers.
Simon David Herzog, Per Persson, Kristina Kvashnina, and Emma Sofia Kritzberg
Biogeosciences, 17, 331–344, https://doi.org/10.5194/bg-17-331-2020, https://doi.org/10.5194/bg-17-331-2020, 2020
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Fe concentrations in boreal rivers are increasing strongly in several regions in Northern Europe. This study focuses on how Fe speciation and interaction with organic matter affect stability of Fe across estuarine salinity gradients. The results confirm a positive relationship between the relative contribution of organically complexed Fe and stability. Moreover, organically complexed Fe was more prevalent at high flow conditions and more dominant further upstream in a catchment.
Moturi S. Krishna, Rongali Viswanadham, Mamidala H. K. Prasad, Vuravakonda R. Kumari, and Vedula V. S. S. Sarma
Biogeosciences, 16, 505–519, https://doi.org/10.5194/bg-16-505-2019, https://doi.org/10.5194/bg-16-505-2019, 2019
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An order-of-magnitude variability in DIC was found within the Indian estuaries due to significant variability in size of rivers, precipitation pattern and lithology in the catchments. Indian monsoonal estuaries annually export ∼ 10.3 Tg of DIC to the northern Indian Ocean, of which 75 % enters into the Bay of Bengal. Our results indicated that chemical weathering of carbonate and silicate minerals by soil CO2 is the major source of DIC in the Indian monsoonal rivers.
Tim Rixen, Birgit Gaye, Kay-Christian Emeis, and Venkitasubramani Ramaswamy
Biogeosciences, 16, 485–503, https://doi.org/10.5194/bg-16-485-2019, https://doi.org/10.5194/bg-16-485-2019, 2019
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Data obtained from sediment trap experiments in the Indian Ocean indicate that lithogenic matter ballast increases organic carbon flux rates on average by 45 % and by up to 62 % at trap locations in the river-influenced regions of the Indian Ocean. Such a strong lithogenic matter ballast effect implies that land use changes and the associated enhanced transport of lithogenic matter may significantly affect the CO2 uptake of the organic carbon pump in the receiving ocean areas.
Yongping Yuan, Ruoyu Wang, Ellen Cooter, Limei Ran, Prasad Daggupati, Dongmei Yang, Raghavan Srinivasan, and Anna Jalowska
Biogeosciences, 15, 7059–7076, https://doi.org/10.5194/bg-15-7059-2018, https://doi.org/10.5194/bg-15-7059-2018, 2018
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Elevated levels of nutrients in surface water, which originate from deposition of atmospheric N, drainage from agricultural fields, and discharges from sewage treatment plants, cause explosive algal blooms that impair water quality. The complex cycling of nutrients through the land, air, and water requires an integrated multimedia modeling system linking air, land surface, and stream processes to assess their sources, transport, and transformation in large river basins for decision making.
Muhammed Ojoshogu Usman, Frédérique Marie Sophie Anne Kirkels, Huub Michel Zwart, Sayak Basu, Camilo Ponton, Thomas Michael Blattmann, Michael Ploetze, Negar Haghipour, Cameron McIntyre, Francien Peterse, Maarten Lupker, Liviu Giosan, and Timothy Ian Eglinton
Biogeosciences, 15, 3357–3375, https://doi.org/10.5194/bg-15-3357-2018, https://doi.org/10.5194/bg-15-3357-2018, 2018
Tom Jilbert, Eero Asmala, Christian Schröder, Rosa Tiihonen, Jukka-Pekka Myllykangas, Joonas J. Virtasalo, Aarno Kotilainen, Pasi Peltola, Päivi Ekholm, and Susanna Hietanen
Biogeosciences, 15, 1243–1271, https://doi.org/10.5194/bg-15-1243-2018, https://doi.org/10.5194/bg-15-1243-2018, 2018
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Iron is a common dissolved element in river water, recognizable by its orange-brown colour. Here we show that when rivers reach the ocean much of this iron settles to the sediments by a process known as flocculation. The iron is then used by microbes in coastal sediments, which are important hotspots in the global carbon cycle.
Shin-Ah Lee and Guebuem Kim
Biogeosciences, 15, 1115–1122, https://doi.org/10.5194/bg-15-1115-2018, https://doi.org/10.5194/bg-15-1115-2018, 2018
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The fluorescent dissolved organic matter (FDOM) delivered from riverine discharges significantly affects carbon and biogeochemical cycles in coastal waters. Our results show that the terrestrial concentrations of humic-like FDOM in river water were 60–80 % higher in the summer and fall, while the in situ production of protein-like FDOM was 70–80 % higher in the spring. Our results suggest that there are large seasonal changes in riverine fluxes of FDOM components to the ocean.
Yafei Zhu, Andrew McCowan, and Perran L. M. Cook
Biogeosciences, 14, 4423–4433, https://doi.org/10.5194/bg-14-4423-2017, https://doi.org/10.5194/bg-14-4423-2017, 2017
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We used a 3-D coupled hydrodynamic–biogeochemical water quality model to investigate the effects of changes in catchment nutrient loading and composition on the phytoplankton dynamics, development of hypoxia and internal nutrient dynamics in a stratified coastal lagoon system. The results highlighted the need to reduce both total nitrogen and total phosphorus for water quality improvement in estuarine systems.
Kamilla S. Sjøgaard, Alexander H. Treusch, and Thomas B. Valdemarsen
Biogeosciences, 14, 4375–4389, https://doi.org/10.5194/bg-14-4375-2017, https://doi.org/10.5194/bg-14-4375-2017, 2017
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Permanent flooding of low-lying coastal areas is a growing threat due to climate-change-related sea-level rise. To reduce coastal damage, buffer zones can be created by managed coastal realignment where existing dykes are breached and new dykes are built further inland. We studied the impacts on organic matter degradation in soils flooded with seawater by managed coastal realignment and suggest that most of the organic carbon present in coastal soils will be permanently preserved after flooding.
Allison A. Oliver, Suzanne E. Tank, Ian Giesbrecht, Maartje C. Korver, William C. Floyd, Paul Sanborn, Chuck Bulmer, and Ken P. Lertzman
Biogeosciences, 14, 3743–3762, https://doi.org/10.5194/bg-14-3743-2017, https://doi.org/10.5194/bg-14-3743-2017, 2017
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Rivers draining small watersheds of the outer coastal Pacific temperate rainforest export some of the highest yields of dissolved organic carbon (DOC) in the world directly to the ocean. This DOC is largely derived from soils and terrestrial plants. Rainfall, temperature, and watershed characteristics such as wetlands and lakes are important controls on DOC export. This region may be significant for carbon export and linking terrestrial carbon to marine ecosystems.
Mathilde Couturier, Gwendoline Tommi-Morin, Maude Sirois, Alexandra Rao, Christian Nozais, and Gwénaëlle Chaillou
Biogeosciences, 14, 3321–3336, https://doi.org/10.5194/bg-14-3321-2017, https://doi.org/10.5194/bg-14-3321-2017, 2017
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At the land–ocean interface, subterranean estuaries (STEs) are a critical transition pathway of nitrogen. Environmental conditions in the groundwater lead to nitrogen transformation, altering the nitrogen species and concentrations exported to the coastal ocean. This study highlights the role of a STE in processing groundwater-derived N in a shallow boreal STE, far from anthropogenic pressures. Biogeochemical transformations provide new N species from terrestrial origin to the coastal ocean.
Elin Almroth-Rosell, Moa Edman, Kari Eilola, H. E. Markus Meier, and Jörgen Sahlberg
Biogeosciences, 13, 5753–5769, https://doi.org/10.5194/bg-13-5753-2016, https://doi.org/10.5194/bg-13-5753-2016, 2016
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Nutrients from land have been discussed to increase eutrophication in the open sea. This model study shows that the coastal zone works as an efficient filter. Water depth and residence time regulate the retention that occurs mostly in the sediment due to processes such as burial and denitrification. On shorter timescales the retention capacity might seem less effective when the land load of nutrients decreases, but with time the coastal zone can import nutrients from the open sea.
B. W. Abbott, J. B. Jones, S. E. Godsey, J. R. Larouche, and W. B. Bowden
Biogeosciences, 12, 3725–3740, https://doi.org/10.5194/bg-12-3725-2015, https://doi.org/10.5194/bg-12-3725-2015, 2015
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As high latitudes warm, carbon and nitrogen stored in permafrost soil will be vulnerable to erosion and transport to Arctic streams and rivers. We sampled outflow from 83 permafrost collapse features in Alaska. Permafrost collapse caused substantial increases in dissolved organic carbon and inorganic nitrogen but decreased methane concentration by 90%. Upland thermokarst may be a dominant linkage transferring carbon and nutrients from terrestrial to aquatic ecosystems as the Arctic warms.
V. Le Fouest, M. Manizza, B. Tremblay, and M. Babin
Biogeosciences, 12, 3385–3402, https://doi.org/10.5194/bg-12-3385-2015, https://doi.org/10.5194/bg-12-3385-2015, 2015
G. G. Laruelle, R. Lauerwald, J. Rotschi, P. A. Raymond, J. Hartmann, and P. Regnier
Biogeosciences, 12, 1447–1458, https://doi.org/10.5194/bg-12-1447-2015, https://doi.org/10.5194/bg-12-1447-2015, 2015
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This study quantifies the exchange of carbon dioxide (CO2) between the atmosphere and the land-ocean aquatic continuum (LOAC) of the northeast North American coast, which consists of rivers, estuaries, and the coastal ocean. Our analysis reveals significant variations of the flux intensity both in time and space across the study area. Ice cover, snowmelt, and the intensity of the estuarine filter are identified as important control factors of the CO2 exchange along the LOAC.
O. Arnalds, H. Olafsson, and P. Dagsson-Waldhauserova
Biogeosciences, 11, 6623–6632, https://doi.org/10.5194/bg-11-6623-2014, https://doi.org/10.5194/bg-11-6623-2014, 2014
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Iceland is one of the largest dust sources on Earth. Based on two separate methods, we estimate dust emissions to range between 30 and 40 million tons annually. Ocean deposition ranges between 5.5 and 13.8 million tons. Calculated iron deposition in oceans around Iceland ranges between 0.56 to 1.4 million tons, which are distributed over wide areas. Iron is a limiting nutrient for primary production in these waters, and dust is likely to affect oceanic Fe levels around Iceland.
N. I. W. Leblans, B. D. Sigurdsson, P. Roefs, R. Thuys, B. Magnússon, and I. A. Janssens
Biogeosciences, 11, 6237–6250, https://doi.org/10.5194/bg-11-6237-2014, https://doi.org/10.5194/bg-11-6237-2014, 2014
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We studied the influence of allochthonous N inputs on primary succession and soil development of a 50-year-old volcanic island, Surtsey. Seabirds increased the ecosystem N accumulation rate inside their colony to ~47 kg ha-1 y-1, compared to 0.7 kg ha-1 y-1 outside it. A strong relationship was found between total ecosystem N stock and both total above- and belowground biomass and SOC stock, which shows how fast external N input can boost primary succession and soil formation.
J.-É. Tremblay, P. Raimbault, N. Garcia, B. Lansard, M. Babin, and J. Gagnon
Biogeosciences, 11, 4853–4868, https://doi.org/10.5194/bg-11-4853-2014, https://doi.org/10.5194/bg-11-4853-2014, 2014
H. E. Reader, C. A. Stedmon, and E. S. Kritzberg
Biogeosciences, 11, 3409–3419, https://doi.org/10.5194/bg-11-3409-2014, https://doi.org/10.5194/bg-11-3409-2014, 2014
R. Death, J. L. Wadham, F. Monteiro, A. M. Le Brocq, M. Tranter, A. Ridgwell, S. Dutkiewicz, and R. Raiswell
Biogeosciences, 11, 2635–2643, https://doi.org/10.5194/bg-11-2635-2014, https://doi.org/10.5194/bg-11-2635-2014, 2014
R. H. Li, S. M. Liu, Y. W. Li, G. L. Zhang, J. L. Ren, and J. Zhang
Biogeosciences, 11, 481–506, https://doi.org/10.5194/bg-11-481-2014, https://doi.org/10.5194/bg-11-481-2014, 2014
E. Asmala, R. Autio, H. Kaartokallio, L. Pitkänen, C. A. Stedmon, and D. N. Thomas
Biogeosciences, 10, 6969–6986, https://doi.org/10.5194/bg-10-6969-2013, https://doi.org/10.5194/bg-10-6969-2013, 2013
C. Buzzelli, Y. Wan, P. H. Doering, and J. N. Boyer
Biogeosciences, 10, 6721–6736, https://doi.org/10.5194/bg-10-6721-2013, https://doi.org/10.5194/bg-10-6721-2013, 2013
S. Nagao, M. Kanamori, S. Ochiai, S. Tomihara, K. Fukushi, and M. Yamamoto
Biogeosciences, 10, 6215–6223, https://doi.org/10.5194/bg-10-6215-2013, https://doi.org/10.5194/bg-10-6215-2013, 2013
V. Le Fouest, M. Babin, and J.-É. Tremblay
Biogeosciences, 10, 3661–3677, https://doi.org/10.5194/bg-10-3661-2013, https://doi.org/10.5194/bg-10-3661-2013, 2013
A. Rumín-Caparrós, A. Sanchez-Vidal, A. Calafat, M. Canals, J. Martín, P. Puig, and R. Pedrosa-Pàmies
Biogeosciences, 10, 3493–3505, https://doi.org/10.5194/bg-10-3493-2013, https://doi.org/10.5194/bg-10-3493-2013, 2013
M. A. Charette, C. F. Breier, P. B. Henderson, S. M. Pike, I. I. Rypina, S. R. Jayne, and K. O. Buesseler
Biogeosciences, 10, 2159–2167, https://doi.org/10.5194/bg-10-2159-2013, https://doi.org/10.5194/bg-10-2159-2013, 2013
B. Deutsch, V. Alling, C. Humborg, F. Korth, and C. M. Mörth
Biogeosciences, 9, 4465–4475, https://doi.org/10.5194/bg-9-4465-2012, https://doi.org/10.5194/bg-9-4465-2012, 2012
P. A. Faber, A. J. Kessler, J. K. Bull, I. D. McKelvie, F. J. R. Meysman, and P. L. M. Cook
Biogeosciences, 9, 4087–4097, https://doi.org/10.5194/bg-9-4087-2012, https://doi.org/10.5194/bg-9-4087-2012, 2012
M. E. Dueker, G. D. O'Mullan, K. C. Weathers, A. R. Juhl, and M. Uriarte
Biogeosciences, 9, 803–813, https://doi.org/10.5194/bg-9-803-2012, https://doi.org/10.5194/bg-9-803-2012, 2012
L. Lassaletta, E. Romero, G. Billen, J. Garnier, H. García-Gómez, and J. V. Rovira
Biogeosciences, 9, 57–70, https://doi.org/10.5194/bg-9-57-2012, https://doi.org/10.5194/bg-9-57-2012, 2012
J. Yu, Y. Fu, Y. Li, G. Han, Y. Wang, D. Zhou, W. Sun, Y. Gao, and F. X. Meixner
Biogeosciences, 8, 2427–2435, https://doi.org/10.5194/bg-8-2427-2011, https://doi.org/10.5194/bg-8-2427-2011, 2011
Cited articles
Ask, J., Rowe, O., Brugel, S., Strömgren, M., Byström, P., and
Andersson, A.: Importance of coastal primary production in the northern
Baltic Sea, Ambio, 45, 635–648, https://doi.org/10.1007/s13280-016-0778-5, 2016.
Asmala, E., Carstensen, J., Conley, D. J., Slomp, C. P., Stadmark, J., and
Voss, M.: Efficiency of the coastal filter: Nitrogen and phosphorus removal
in the Baltic Sea, Limnol. Oceanogr., 62, S222–S238,
https://doi.org/10.1002/lno.10644, 2017.
Baer, S. E., Connelly, T. L., Sipler, R. E., Yager, P. L., and Bronk, D. A.:
Effect of temperature on rates of ammonium uptake and nitrification in the
western coastal Arctic during winter, spring, and summer, Global Biogeochem.
Cy., 28, 1455–1466, https://doi.org/10.1002/2013GB004765, 2014.
Bartl, I., Liskow, I., Schulz, K., Voss, M., and Umlauf, L.: River plume and
bottom boundary layer – Hotspots for nitrification in a coastal bay?,
Estuar. Coast. Shelf Sci., 208, 70–82, https://doi.org/10.1016/j.ecss.2018.04.023,
2018.
Bear, J.: Dynamics of fluids in porous media, American Elsevier Pub. Co, New
York, NY, 1972.
Bengtsson, G., Bengtson, P., and Månsson, K. F.: Gross nitrogen
mineralization-, immobilization-, and nitrification rates as a function of
soil C∕N ratio and microbial activity, Soil Biol. Biochem., 35, 143–154,
https://doi.org/10.1016/S0038-0717(02)00248-1, 2003.
Bianchi, M., Feliatra, F., and Lefevre, D.: Regulation of nitrification in the
land-ocean contact area of the Rhone River plume (NW Mediterranean), Aquat.
Microb. Ecol., 18, 301–312, https://doi.org/10.3354/ame018301, 1999.
Bonaglia, S., Deutsch, B., Bartoli, M., Marchant, H. K., and Brüchert,
V.: Seasonal oxygen, nitrogen and phosphorus benthic cycling along an
impacted Baltic Sea estuary: regulation and spatial patterns,
Biogeochemistry, 119, 139–160, https://doi.org/10.1007/s10533-014-9953-6, 2014.
Bonaglia, S., Hylén, A., Rattray, J. E., Kononets, M. Y., Ekeroth, N., Roos, P., Thamdrup, B., Brüchert, V., and Hall, P. O. J.: The fate of fixed nitrogen in marine sediments with low organic loading: an in situ study, Biogeosciences, 14, 285–300, https://doi.org/10.5194/bg-14-285-2017, 2017.
Boudreau, B. P. and Jørgensen, B. B.: The benthic boundary layer:
transport processes and biogeochemistry, Oxford University Press, Oxford,
2001.
Boudreau, B. P., Huettel, M., Forster, S., Jahnke, R. A., McLachlan, A.,
Middelburg, J. J., Nielsen, P., Sansone, F., Taghon, G., Van Raaphorst, W.,
Webster, I., Weslawski, J. M., Wiberg, P., and Sundby, B.: Permeable marine
sediments: Overturning an old paradigm, Eos (Washington DC), 82,
133–136, 2001.
Bradley, P. M., Fernandez, M., and Chapelle, F. H.: Carbon Limitation of
Denitrification Rates in an Anaerobic Groundwater System, Environ. Sci.
Technol., 26, 2377–2381, https://doi.org/10.1021/es00036a007, 1992.
Brion, N., Andersson, M. G. I., and Elskens, M.: Nitrogen cycling, retention
and export in a eutrophic temperate macrotidal estuary, Mar. Ecol. Prog.
Ser., 357, 87–99, https://doi.org/10.3354/meps07249, 2008.
Bristow, L. A., Sarode, N., Cartee, J., Caro-Quintero, A., Thamdrup, B., and
Stewart, F. J.: Biogeochemical and metagenomic analysis of nitrite
accumulation in the Gulf of Mexico hypoxic zone, Limnol. Oceanogr., 60,
1733–1750, https://doi.org/10.1002/lno.10130, 2015.
Brydsten, L.: Wave-induced sediment resuspension in the Öre Estuary,
northern Sweden, Hydrobiologia, 235, 71–83, https://doi.org/10.1007/bf00026201, 1992.
Brydsten, L. and Jansson, M.: Studies of estuarine sediment dynamics using
137Cs from the Tjernobyl accident as a tracer, Estuar. Coast. Shelf Sci.,
28, 249–259, https://doi.org/10.1016/0272-7714(89)90016-4, 1989.
Casciotti, K. L., Sigman, D. M., Hastings, M. G., Böhlke, J. K., and
Hilkert, A.: Measurement of the Oxygen Isotopic Composition of Nitrate in
Seawater and Freshwater Using the Denitrifier Method, Anal. Chem., 74,
4905–4912, https://doi.org/10.1021/ac020113w, 2002.
Cifuentes, L. A., Sharp, J. H., and Fogel, M. L.: Stable carbon and nitrogen
isotope biogeochemistry in the Delaware estuary, Limnol. Oceanogr., 33,
1102–1115, https://doi.org/10.4319/lo.1988.33.5.1102, 1988.
Conley, D. J., Carstensen, J., Aigars, J., Axe, P., Bonsdorff, E., Eremina,
T., Haahti, B.-M., Humborg, C., Jonsson, P., Kotta, J., Lännegren, C.,
Larsson, U., Maximov, A., Medina, M. R., Lysiak-Pastuszak, E.,
Remeikaité-Nikiené, N., Walve, J., Wilhelms, S., and Zillén, L.:
Hypoxia is increasing in the coastal zone of the Baltic Sea, Environ. Sci.
Technol., 45, 6777–83, https://doi.org/10.1021/es201212r, 2011.
Cook, P. L. M., Wenzhoefer, F., Rysgaard, S., Galaktionov, O. S., Meysman,
F. J. R., Eyre, B. D., Cornwell, J., Huettel, M., and Glud, R. N.:
Quantification of denitrification in permeable sediments: Insights from a
two-dimensional simulation analysis and experimental data, Limnol.
Oceanogr., 4, 294–307, 2006.
Cyberska, B. and Krzyminski, W.: Extension of the Vistula River water in the
Gulf of Gdansk, in Proceedings of the 16th Conference of the Baltic
Oceanographers,Institute of Marine Research Kiel, Kiel, 290–304,
1988.
Dai, M., Wang, L., Guo, X., Zhai, W., Li, Q., He, B., and Kao, S.-J.: Nitrification and inorganic nitrogen distribution in a large perturbed river/estuarine system: the Pearl River Estuary, China, Biogeosciences, 5, 1227–1244, https://doi.org/10.5194/bg-5-1227-2008, 2008.
Dale, O. R., Tobias, C. R., and Song, B.: Biogeographical distribution of
diverse anaerobic ammonium oxidizing (anammox) bacteria in Cape Fear River
Estuary, Environ. Microbiol., 11, 1194–1207,
https://doi.org/10.1111/j.1462-2920.2008.01850.x, 2009.
Dalsgaard, T., Thamdrup, B., and Canfield, D. E.: Anaerobic ammonium
oxidation (anammox) in the marine environment, Res. Microbiol., 156,
457–464, https://doi.org/10.1016/j.resmic.2005.01.011, 2005.
Damashek, J., Casciotti, K. L., and Francis, C. A.: Variable Nitrification
Rates Across Environmental Gradients in Turbid, Nutrient-Rich Estuary Waters
of San Francisco Bay, Estuar. Coast., 39, 1050–1071,
https://doi.org/10.1007/s12237-016-0071-7, 2016.
Dang, H. and Chen, C. T. A.: Ecological energetic perspectives on responses
of nitrogen-transforming chemolithoautotrophic microbiota to changes in the
marine environment, Front. Microbiol., 8, 1246,
https://doi.org/10.3389/fmicb.2017.01246, 2017.
DBotnia: dBotnia database, Umeå Marine Sciences Centre. Swedish
environmental monitoring, available at:
http://www.umf.umu.se/miljoanalys/databasen-dbotnia/ (last access: 10 July 2018), 2016.
Deek, A., Dähnke, K., Van Beusekom, J., Meyer, S., Voss, M., and Emeis,
K.: N2 fluxes in sediments of the Elbe Estuary and adjacent coastal zones,
Mar. Ecol. Prog. Ser., 493, 9–21, https://doi.org/10.3354/meps10514, 2013.
Diaz, R. J. and Rosenberg, R.: Spreading dead zones and consequences for
marine ecosystems, Science, 321, 926–929, https://doi.org/10.1126/science.1156401,
2008.
Dugdale, R. C. and Wilkerson, F. P.: The use of 15N to measure nitrogen
uptake in eutrophic oceans; experimental considerations, Limnol. Oceanogr.,
31, 673–689, https://doi.org/10.4319/lo.1986.31.4.0673, 1986.
Edler, L. (Ed.): Recommendations on methods for marine biological studies
in the Baltic Sea. Phytoplankton and chlorophyll, Publ.-Balt. Mar. Biol.
BMB, 5, 1–38, 1979.
Edman, M., Wåhlström, I., Almroth-Rosell, E., Eilola, K., Meier, H.
E. M., and Arneborg, L.: Nutrient Retention in the Swedish Coastal Zone,
Front. Mar. Sci., 5, 1–22, https://doi.org/10.3389/fmars.2018.00415, 2018.
Ehrenhauss, S., Witte, U., Janssen, F., and Huettel, M.: Decomposition of
diatoms and nutrient dynamics in permeable North Sea sediments, Cont. Shelf
Res., 24, 721–737, https://doi.org/10.1016/j.csr.2004.01.002,
2004.
Eyre, B. D., Maher, D. T., and Squire, P.: Quantity and quality of organic
matter (detritus) drives N2 effluxes (net denitrification) across seasons,
benthic habitats, and estuaries, Global Biogeochem. Cy., 27,
1083–1095, https://doi.org/10.1002/2013GB004631, 2013.
Fear, J. M., Thompson, S. P., Gallo, T. E., and Paerl, H. W.: Denitrification
rates measured along a salinity gradient in the eutrophic Neuse River
estuary, North Carolina, USA, Estuaries, 28, 608–619,
https://doi.org/10.1007/BF02696071, 2005.
Finlay, J. C., Small, G. E., and Sterner, R. W.: Human influences on nitrogen
removal in lakes, Science,, 342, 247–250,
https://doi.org/10.1126/science.1242575, 2013.
Forsgren, G. and Jansson, M.: The turnover of river-transported iron,
phosphorus and organic carbon in the Öre estuary, northern Sweden,
Hydrobiologia, 235/236 585–596, https://doi.org/10.1007/BF00026246, 1992.
Forster, S., Bobertz, B., and Bohling, B.: Permeability of Sands in the
Coastal Areas of the Southern Baltic Sea: Mapping a Grain-size Related
Sediment Property, Aquat. Geochem., 9, 171–190,
https://doi.org/10.1023/B:AQUA.0000022953.52275.8b, 2003.
Galloway, J. N. and Cowling, E. B.: Reactive Nitrogen and The World: 200
Years of Change, Ambio, 31, 64–71, https://doi.org/10.1579/0044-7447-31.2.64, 2002.
Gao, H., Matyka, M., Liu, B., Khalili, A., Kostka, J. E., Collins, G.,
Jansen, S., Holtappels, M., Jensen, M. M., Badewien, T. H., Beck, M.,
Grunwal, M., de Beer, D., Lavik, G., and Kuypers, M. M. M.: Intensive and
extensive nitrogen loss from intertidal permeable sediments of the Wadden
Sea, Limnol. Oceanogr., 57, 185–198, https://doi.org/10.4319/lo.2012.57.1.0185,
2012.
Gihring, T. M., Canion, A., Riggs, A., Huettel, M., and Kostka, J. E.:
Denitrification in shallow, sublittoral Gulf of Mexico permeable sediments,
Limnol. Oceanogr., 55, 43–54, https://doi.org/10.4319/lo.2010.55.1.0043, 2010.
Goñi, M. A., Teixeira, M. J., and Perkeya, D. W.: Sources and
distribution of organic matter in a river-dominated estuary (Winyah Bay, SC,
USA), Estuar. Coast. Shelf Sci., 57, 1023–1048,
https://doi.org/10.1016/S0272-7714(03)00008-8, 2003.
Grasshoff, K., Kremling, K., and Ehrhardt, M.: Methods of Seawater Analysis,
3rd Edn., Wiley-VCH, Weinheim, 1999.
Hansson, M., Andersson, L., and Axe, P.: Areal Extent and Volume of Anoxia
and Hypoxia in the Baltic Sea, 1960–2011, Rep. Oceanogr., 42, 1–63, 2011.
Happel, E., Bartl, I., Voss, M., and Riemann, L.: Extensive nitrification and
active ammonia oxidizers in two contrasting coastal systems of the Baltic
Sea, Environ. Microbiol., 20, 2913–2926, https://doi.org/10.1111/1462-2920.14293,
2018.
Heiss, E. M. and Fulweiler, R. W.: Coastal water column ammonium and nitrite
oxidation are decoupled in summer, Estuar. Coast. Shelf Sci., 178, 110–119,
https://doi.org/10.1016/j.ecss.2016.06.002, 2016.
HELCOM: Manual for Marine Monitoring in the COMBINE Programme of HELCOM, Helsinki Commision, 1–414,
2014.
HELCOM: Sources and pathways of nutrients to the Baltic Sea, Baltic Sea
Environment Proceedings No. 153, Helsinki Commision, 1–48, 2018.
HELCOM: Nutrient inputs 1995–2016, available at:
http://www.helcom.fi/baltic-sea-action-plan/nutrient-reduction-scheme/progress-towards-maximum-allowable-inputs/ (last access: 15 April 2019),
2019.
Hellemann, D., Tallberg, P., Bartl, I., Voss, M., and Hietanen, S.:
Denitrification in an oligotrophic estuary: A delayed sink for riverine
nitrate, Mar. Ecol. Prog. Ser., 583, 63–80, https://doi.org/10.3354/meps12359, 2017.
Hietanen, S. and Kuparinen, J.: Seasonal and short-term variation in
denitrification and anammox at a coastal station on the Gulf of Finland,
Baltic Sea, Hydrobiologia, 596, 67–77, https://doi.org/10.1007/s10750-007-9058-5,
2008.
Hietanen, S., Jantti, H., Buizert, C., Jurgens, K., Labrenz, M., Voss, M.,
and Kuparinen, J.: Hypoxia and nitrogen processing in the Baltic Sea water
column, Limnol. Oceanogr., 57, 325–337, https://doi.org/10.4319/lo.2012.57.1.0325,
2012.
Hoch, M. P. and Kirchman, D. L.: Ammonium uptake by heterotrophic bacteria
in the Delaware estuary and adjacent coastal waters, Limnol. Oceanogr.,
40, 886–897, https://doi.org/10.4319/lo.1995.40.5.0886, 1995.
Holtermann, P. L. and Umlauf, L.: The Baltic Sea Tracer Release Experiment:
2. Mixing processes, J. Geophys. Res.-Ocean., 117, 1–17,
https://doi.org/10.1029/2011JC007445, 2012.
Howarth, R. W. and Marino, R.: Nitrogen as the limiting nutrient for
eutrophication in coastal marine ecosystems: Evolving views over three
decades, Limnol. Oceanogr., 51, 364–376, 2006.
Howarth, R. W., Billen, G., Swaney, D., Townsend, A., Jaworski, N., Lajtha,
K., Downing, J. A., Elmgren, R., Caraco, N., Jordan, T., Berendse, F.,
Freney, J., Kudeyarov, V., Murdoch, P., and Zhu, Z. L.: Regional nitrogen
budgets and riverine N&P fluxes for the drainages to the North Atlantic
Ocean: Natural and human influences, Biogeochemistry, 35, 75–139,
https://doi.org/10.1007/BF02179825, 1996.
Hsiao, S. S.-Y., Hsu, T.-C., Liu, J.-w., Xie, X., Zhang, Y., Lin, J., Wang, H., Yang, J.-Y. T., Hsu, S.-C., Dai, M., and Kao, S.-J.: Nitrification and its oxygen consumption along the turbid Chang Jiang River plume, Biogeosciences, 11, 2083–2098, https://doi.org/10.5194/bg-11-2083-2014, 2014.
Huettel, M. and Rusch, A.: Transport and degradation of phytoplankton in
permeable sediment, Limnol. Oceanogr., 45, 534–549, 2000.
Huettel, M., Ziebis, W., and Forster, S.: Flow-induced uptake of particulate
matter in permeable sediments, Limnol. Oceanogr., 41, 309–322, 1996.
Huettel, M., Ziebis, W., Forster, S., and Luther, G. W.: Advective transport
affecting metal and nutrient distributions and interfacial fluxes in
permeable sediments, Geochim. Cosmochim. Ac., 62, 613–631,
https://doi.org/10.1016/s0016-7037(97)00371-2, 1998.
Huettel, M., Røy, H., Precht, E., and Ehrenhauss, S.: Hydrodynamical
impact on biogeochemical processes in aquatic sediments, Hydrobiologia, 494,
231–236, 2003.
Huettel, M., Berg, P., and Kostka, J. E.: Benthic Exchange and Biogeochemical
Cycling in Permeable Sediments, Ann. Rev. Mar. Sci., 6, 23–51,
https://doi.org/10.1146/annurev-marine-051413-012706, 2014.
Jäntti, H. and Hietanen, S.: The Effects of Hypoxia on Sediment Nitrogen
Cycling in the Baltic Sea, AMBIO A. J. Hum. Environ., 41, 161–169, 2012.
Jäntti, H., Stange, F., Leskinen, E., and Hietanen, S.: Seasonal
variation in nitrification and nitrate-reduction pathways in coastal
sediments in the Gulf of Finland, Baltic Sea, Aquat. Microb. Ecol., 63,
171–181, https://doi.org/10.3354/ame01492, 2011.
Jilbert, T., Asmala, E., Schröder, C., Tiihonen, R., Myllykangas, J.-P., Virtasalo, J. J., Kotilainen, A., Peltola, P., Ekholm, P., and Hietanen, S.: Impacts of flocculation on the distribution and diagenesis of iron in boreal estuarine sediments, Biogeosciences, 15, 1243–1271, https://doi.org/10.5194/bg-15-1243-2018, 2018.
Karl, D. M., Knauer, G. A., Martin, J. H., and Ward, B. B.: Bacterial
chemolithotrophy in the ocean is associated with sinking particles, Nature,
309, 54–56, https://doi.org/10.1038/309054a0, 1984.
Kessler, A. J., Glud, R. N., Cardenas, M. B., and Cook, P. L. M.: Transport
zonation limits coupled nitrification-denitrification in permeable
sediments, Environ. Sci. Technol., 47, 13404–11,
https://doi.org/10.1021/es403318x, 2013.
Khalil, K., Raimonet, M., Laverman, A. M., Yan, C., Andrieux-Loyer, F.,
Viollier, E., Deflandre, B., Ragueneau, O., and Rabouille, C.: Spatial and
Temporal Variability of Sediment Organic Matter Recycling in Two Temperate
Eutrophicated Estuaries, Aquat. Geochem., 19, 517–542,
https://doi.org/10.1007/s10498-013-9213-8, 2013.
Klawonn, I., Bonaglia, S., Brüchert, V., and Ploug, H.: Aerobic and
anaerobic nitrogen transformation processes in N2-fixing cyanobacterial
aggregates, ISME J., 9, 1456–1466, https://doi.org/10.1038/ismej.2014.232, 2015a.
Klawonn, I., Bonaglia, S., Brüchert, V., and Ploug, H.: Aerobic and
anaerobic nitrogen transformation processes in N2-fixing cyanobacterial
aggregates, ISME J., 9, 1456–1466, https://doi.org/10.1038/ismej.2014.232, 2015b.
Korth, F., Fry, B., Liskow, I., and Voss, M.: Nitrogen turnover during the
spring outflows of the nitrate-rich Curonian and Szczecin lagoons using dual
nitrate isotopes, Mar. Chem., 154, 1–11, https://doi.org/10.1016/j.marchem.2013.04.012,
2013.
Kuypers, M. M. M., Marchant, H. K., and Kartal, B.: The microbial
nitrogen-cycling network, Nat. Rev. Microbiol., 16, 263–276,
https://doi.org/10.1038/nrmicro.2018.9, 2018.
Lohse, L., Epping, E. H. G., Helder, W., and VanRaaphorst, W.: Oxygen pore
water profiles in continental shelf sediments of the North Sea: Turbulent
versus molecular diffusion, Mar. Ecol. Prog. Ser., 145, 63–75,
https://doi.org/10.3354/meps145063, 1996.
Maksymowska, D., Richard, P., Piekarek-Jankowska, H., and Riera, P.: Chemical
and Isotopic Composition of the Organic Matter Sources in the Gulf of Gdansk
(Southern Baltic Sea), Estuar. Coast. Shelf Sci., 51, 585–598,
https://doi.org/10.1006/ECSS.2000.0701, 2000.
Malmgren, L. and Brydsten, L.: Sedimentation of river-transported particles
in the Öre estuary, northern Sweden, Hydrobiologia, 235/236, 59–69,
https://doi.org/10.1007/BF00026200, 1992.
Marchant, H. K., Ahmerkamp, S., Kuypers, M. M. M., Winter, C., Lavik, G., and
Holtappels, M.: Coupled nitrification-denitrification leads to extensive N
loss in subtidal permeable sediments, Limnol. Oceanogr., 61, 1033–1048,
https://doi.org/10.1002/lno.10271, 2016.
Marzocchi, U., Thamdrup, B., Stief, P., and Glud, R. N.: Effect of settled
diatom-aggregates on benthic nitrogen cycling, Limnol. Oceanogr., 63,
431–444, https://doi.org/10.1002/lno.10641, 2018.
Matciak, M. and Nowacki, J.: The Vistula river discharge front – surface observations, Oceanologica, 37, 75–88, 1995.
Nedwell, D. B., Hall, S.-E., Andersson, A., Hagström, Å. F., and
Lindström, E. B.: Seasonal changes in the distribution and exchange of
inorganic nitrogen between sediment and water in the Northern Baltic (Gulf
of Bothnia), Estuar. Coast. Shelf Sci., 17, 169–179,
https://doi.org/10.1016/0272-7714(83)90061-6, 1983.
Nedwell, D. B., Jickells, T. D., Trimmer, M., and Sanders, R.: Nutrients in
Estuaries, in: Estuaries, Vol. 29, edited by: Nedwell, D. B. and
Raffaeli, D. G., Academic Press, London, UK, 43–92, 1999.
Nielsen, L. P.: Denitrification in sediment determined from nitrogen isotope
pairing, FEMS Microbiol. Lett., 86, 357–362,
https://doi.org/10.1111/j.1574-6968.1992.tb04828.x, 1992.
Nielsen, L. P. and Glud, R. N.: Denitrification in a coastal sediment
measured in situ by the nitrogen isotope pairing technique applied to a
benthic flux chamber, Mar. Ecol. Prog. Ser., 137, 181–186,
https://doi.org/10.3354/meps137181, 1996.
Nixon, S. W.: Coastal marine eutrophication: A definition, social causes,
and future concerns, Ophelia, 41, 199–219,
https://doi.org/10.1080/00785236.1995.10422044, 1995.
Nixon, S. W., Ammerman, J. W., Atkinson, L. P., Berounsky, V. M., Billen,
G., Boicourt, W. C., Boynton, W. R., Church, T. M., Ditoro, D. M., Elmgren,
R., Garber, J. H., Giblin, A. E., Jahnke, R. A., Owens, N. J. P., Pilson, M.
E. Q., and Seitzinger, S. P.: The fate of nitrogen and phosphorus at the
land-sea margin of the North Atlantic Ocean, Biogeochemistry, 35,
141–180, https://doi.org/10.1007/BF02179826, 1996.
Pastuszak, M. and Witek, Z.: Discharges of water and nutrients by the
Vistula and Oder rivers draining Polish territory, in: Temporal and spatial
differences in emission of nitrogen and phosphorus from Polish territory to
the Baltic Sea, edited by: Pastuszak, M. and Igras, J., National
Marine Fisheries Research Institute, Institute of Soil Science and Plant
Cultivation, Fertilizer Research Institute, Gdynia, 309–346, 2012.
Pastuszak, M., Stålnacke, P., Pawlikowski, K., and Witek, Z.: Response of
Polish rivers (Vistula, Oder) to reduced pressure from point sources and
agriculture during the transition period (1988–2008), J. Mar. Syst., 94,
157–173, https://doi.org/10.1016/j.jmarsys.2011.11.017, 2012.
Phillips, C. J., Smith, Z., Embley, T. M., and Prosser, J. I.: Phylogenetic
differences between particle-associated and planktonic ammonia-oxidizing
bacteria of the beta subdivision of the class Proteobacteria in the
Northwestern Mediterranean Sea, Appl. Environ. Microbiol., 65, 779–86,
1999.
Piña-Ochoa, E. and Álvarez-Cobelas, M.: Denitrification in aquatic
environments: A cross-system analysis, Biogeochemistry, 81, 111–130,
https://doi.org/10.1007/s10533-006-9033-7, 2006.
Precht, E., Franke, U., Polerecky, L., and Huettel, M.: Oxygen dynamics in
permeable sediments with wave-driven pore water exchange, Limnol. Oceanogr.,
49, 693–705, https://doi.org/10.4319/lo.2004.49.3.0693, 2004.
Rabalais, N. N.: Nitrogen in Aquatic Ecosystems, AMBIO A J. Hum. Environ.,
31, 102–112, https://doi.org/10.1579/0044-7447-31.2.102, 2002.
Radtke, H., Neumann, T., Voss, M., and Fennel, W.: Modeling pathways of
riverine nitrogen and phosphorus in the Baltic Sea, J. Geophys. Res.-Ocean.,
117, 1–15, https://doi.org/10.1029/2012JC008119, 2012.
Rao, A. M. F., McCarthy, M. J., Gardner, W. S., and Jahnke, R. A.:
Respiration and denitrification in permeable continental shelf deposits on
the South Atlantic Bight: Rates of carbon and nitrogen cycling from sediment
column experiments, Cont. Shelf Res., 27, 1801–1819,
https://doi.org/10.1016/j.csr.2007.03.001, 2007.
Rao, A. M. F., McCarthy, M. J., Gardner, W. S., and Jahnke, R. A.:
Respiration and denitrification in permeable continental shelf deposits on
the South Atlantic Bight: N2:Ar and isotope pairing measurements in sediment
column experiments, Cont. Shelf Res., 28, 602–613,
https://doi.org/10.1016/j.csr.2007.11.007, 2008.
Revsbech, N. P., Jorgensen, B. B., and Blackburn, T. H.: Oxygen in the Sea
Bottom Measured with a Microelectrode, Science, 207,
1355–1356, https://doi.org/10.1126/science.207.4437.1355, 1980.
Richards, K. J.: Physical Processes in the Benthic Boundary Layer, Philos.
Trans. R. Soc. A, 331, 3–13,
https://doi.org/10.1098/rsta.1990.0052, 1990.
Richardson, K. and Jørgensen, B. B.: Eutrophication: Definition, History
and Effects, in: Eutrophication in Coastal Marine Ecosystems,
American Geophysical Union, 1–19, 2013.
Risgaard-Petersen, N., Nielsen, L. P., Rysgaard, S., Dalsgaard, T., and
Meyer, R. L.: Application of the isotope pairing technique in sediments
where nanammox and denitrification coexist, Limnol. Ocean.
Method., 1, 63–73, https://doi.org/10.4319/lom.2003.1.63, 2003.
Rolff, C. and Elmgren, R.: Use of riverine organic matter in plankton food
webs of the Baltic Sea, Mar. Ecol. Prog. Ser., 197, 81–101,
https://doi.org/10.3354/meps197081, 2000.
Rysgaard, S., Risgaard-Petersen, N., Sloth, N. P., Jensen, K., and Nielsen,
L. P.: Oxygen regulation of nitrification and denitrification in sediments,
Limnol. Oceanogr., 39, 1643–1652, https://doi.org/10.4319/lo.1994.39.7.1643, 1994.
Santos, I. R., Eyre, B. D., and Huettel, M.: The driving forces of porewater
and groundwater flow in permeable coastal sediments: A review, Estuar.
Coast. Shelf Sci., 98, 1–15, https://doi.org/10.1016/j.ecss.2011.10.024, 2012.
Savoye, N., Aminot, A., Tréguer, P., Fontugne, M., Naulet, N., and
Kérouel, R.: Dynamics of particulate organic matter δ15N and
δ13C during spring phytoplankton blooms in a macrotidal ecosystem
(Bay of Seine, France), Mar. Ecol. Prog. Ser., 255, 27–41,
https://doi.org/10.3354/meps255027, 2003.
Schlitzer, H. D.: Ocean data view, Alfred Wegener Inst. Polar Mar. Res.
Bremerhaven, 2015.
Seitzinger, S., Harrison, J. A., Böhlke, J. K., Bouwman, A. F.,
Lowrance, R., Peterson, B., Tobias, C., and Van Drecht, G.: Denitrification
across landscapes and waterscapes: A synthesis, Ecol. Appl., 16,
2064–2090, 2006.
Seitzinger, S. P. and Nixon, S. W.: Eutrophication and the rate of
denitrification and N20 production in coastal marine sediments, Limnol.
Oceanogr., 30, 1332–1339, https://doi.org/10.4319/lo.1985.30.6.1332, 1985.
Siegel, H., Gerth, M., and Schmidt, T.: Water exchange in the Pomeranian
Bight investigated by satellite data and shipborne measurements, Cont. Shelf
Res., 16, 1793–1801, https://doi.org/10.1016/0278-4343(96)00012-X, 1996.
Sigman, D. M., Casciotti, K. L., Andreani, M., Barford, C., Galanter, M., and
Böhlke, J. K.: A Bacterial Method for the Nitrogen Isotopic Analysis of
Nitrate in Seawater and Freshwater, Anal. Chem., 73, 4145–4153,
https://doi.org/10.1021/ac010088e, 2001.
Silvennoinen, H., Hietanen, S., Liikanen, A., Stange, C. F., Russow, R., and
Martikainen, P. J.: Denitrification in the River Estuaries of the Northern
Baltic Sea, Ambio, 36, 134–140,
https://doi.org/10.1579/0044-7447(2007)36[134:DITREO]2.0.CO;2, 2007.
SMHI: Djupdata för havsområden 2003, Norrköping, SMHI, 1–69, 2003.
Soetaert, K., Middelburg, J. J., Heip, C., Meire, P., Van Damme, S., and
Maris, T.: Long-term change in dissolved inorganic nutrients in the
heterotrophic Scheldt estuary (Belgium, The Netherlands), Limnol. Oceanogr.,
51, 409–423, 2006.
Statham, P. J.: Nutrients in estuaries–an overview and the potential
impacts of climate change, Sci. Total Environ., 434, 213–27,
https://doi.org/10.1016/j.scitotenv.2011.09.088, 2012.
Stepanauskas, R., Jørgensen, N. O. G., Eigaard, O. R., Žvikas, A.,
Tranvik, L. J., and Leonardson, L.: Summer inputs of riverine nutrients to
the Batlic Sea: Bioavailability and eutrophication relevance, Ecol. Monogr.,
72, 579–597, https://doi.org/10.1890/0012-9615(2002)072[0579:SIORNT]2.0.CO;2, 2002.
Sweitzer, J., Langaas, S., and Folke, C.: Land use and population density in
the Baltic Sea drainage basin: A GIS database, Ambio, 25, 191–198, 1996.
Taylor, P. G. and Townsend, A. R.: Stoichiometric control of organic
carbon–nitrate relationships from soils to the sea, Nature, 464,
1178–1181, https://doi.org/10.1038/nature08985, 2010.
Thibodeaux, L. J. and Boyle, J. D.: Bedform-Generated convective transport
in Bottom sediment, Nature, 325, 341–343, https://doi.org/10.1038/325341a0, 1987.
Thoms, F., Burmeister, C., Dippner, J. W., Gogina, M., Janas, U.,
Kendzierska, H., Liskow, I., and Voss, M.: Impact of macrofaunal communities
on the coastal filter function in the Bay of Gdansk, Baltic Sea, Front. Mar.
Sci., 5, 1–19, https://doi.org/10.3389/fmars.2018.00201, 2018.
Trimmer, M., Nicholls, J. C., and Deflandre, B.: Anaerobic Ammonium Oxidation
Measured in Sediments along the Thames Estuary, United Kingdom, Appl.
Environ. Microbiol., 69, 6447–6454,
https://doi.org/10.1128/AEM.69.11.6447-6454.2003, 2003.
Turnewitsch, R. and Graf, G.: Variability of particulate seawater properties
related to bottom mixed layer-associated internal waves in shallow water on
a time scale of hours, Limnol. Oceanogr., 48, 1254–1264,
https://doi.org/10.4319/lo.2003.48.3.1254, 2003.
Veuger, B., Pitcher, A., Schouten, S., Sinninghe Damsté, J. S., and Middelburg, J. J.: Nitrification and growth of autotrophic nitrifying bacteria and Thaumarchaeota in the coastal North Sea, Biogeosciences, 10, 1775–1785, https://doi.org/10.5194/bg-10-1775-2013, 2013.
Voss, M., Emeis, K.-C., Hille, S., Neumann, T., and Dippner, J. W.: Nitrogen
cycle of the Baltic Sea from an isotopic perspective, Global Biogeochem.
Cy., 19, GB3001, https://doi.org/10.1029/2004GB002338, 2005a.
Voss, M., Liskow, I., Pastuszak, M., Rüβ, D., Schulte, U., and
Dippner, J. W.: Riverine discharge into a coastal bay: A stable isotope
study in the Gulf of Gdańsk, Baltic Sea, J. Mar. Syst., 57,
127–145, https://doi.org/10.1016/j.jmarsys.2005.04.002, 2005b.
Ward, B. B.: Nitrification in Marine Systems, in: Nitrogen in the Marine
Environment, edited by: Capone, D. G., Bronk, D. A., Mulholland, M. R., and Carpenter, E.
J., Elsevier, 199–261, 2008.
Ward, B. B.: Measurement and Distribution of Nitrification Rates in the
Oceans, in: Methods in enzymology, Vol. 486, 307–323, 2011.
Ward, B. B., Talbot, M. C., and Perry, M. J.: Contributions of phytoplankton
and nitrifying bacteria to ammonium and nitrite dynamics in coastal waters,
Cont. Shelf Res., 3, 383–398, https://doi.org/10.1016/0278-4343(84)90018-9, 1984.
Wasmund, N., Topp, I., and Schories, D.: Optimising the storage and
extraction of chlorophyll samples Chlorophyll Methodology Extraction Storage
Freezing, Oceanologia, 48, 125–144, 2006.
Wielgat-Rychert, M., Ameryk, A., Jarosiewicz, A., Kownacka, J., Rychert, K.,
Szymanek, L., Zalewski, M., Agatova, A., Lapina, N., and Torgunova, N.:
Impact of the inflow of Vistula river waters on the pelagic zone in the Gulf
of Gdańsk, Oceanologia, 55, 859–886, https://doi.org/10.5697/oc.55-4.859, 2013.
Wikner, J. and Andersson, A.: Increased freshwater discharge shifts the
trophic balance in the coastal zone of the northern Baltic Sea, Glob. Change
Biol., 18, 2509–2519, https://doi.org/10.1111/j.1365-2486.2012.02718.x, 2012.
Witek, Z., Ochocki, S., Nakonieczny, J., Podgórska, B., and Drgas, A.:
Primary production and decomposition of organic matter in the epipelagic
zone of the Gulf of Gdansk, an estuary of the Vistula, ICES J.
Mar. Sci., 56, 3–14, 1999.
Yager, P. L., Potvin, M., Farnelid, H., Waller, A. S., Heinrich, F., Mende,
D. R., Estrada, M., Bork, P., Tremblay, J.-É., Bertilsson, S.,
Alonso-Saez, L., Lovejoy, C., Riemann, L., Pedros-Alio, C., and Bakker, K.:
Role for urea in nitrification by polar marine Archaea, P. Natl. Acad.
Sci. USA, 109, 17989–17994, https://doi.org/10.1073/pnas.1201914109, 2012.
Short summary
Irrespective of variable environmental settings in estuaries, the quality of organic particles is an important factor controlling microbial processes that facilitate a reduction of land-derived nitrogen loads to the open sea. Through the interplay of biogeochemical processing, geomorphology, and hydrodynamics, organic particles may function as a carrier and temporary reservoir of nitrogen, which has a major impact on the efficiency of nitrogen load reduction.
Irrespective of variable environmental settings in estuaries, the quality of organic particles...
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