Results 21 to 30 of about 107,532 (164)

Saltwater Intrusion and Submarine Groundwater Discharge: Acceleration of Biogeochemical Reactions in Changing Coastal Aquifers

Frontiers in Earth Science, 2021
Intrusion of saltwater into freshwater coastal aquifers poisons an essential resource. Such intrusions are occurring along coastlines worldwide due largely to the over-pumping of freshwater and sea level rise.
Willard S. Moore, Samantha B. Joye
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Investigating Boron Isotopes for Identifying Nitrogen Sources Supplied by Submarine Groundwater Discharge to Coastal Waters

Frontiers in Environmental Science, 2020
Stable isotopes of oxygen, nitrogen, and boron were used to identify the sources of nitrate (NO3–) in submarine groundwater discharge (SGD) into a large tidal estuary (Long Island Sound, NY, United States).
Joseph Tamborski, Joseph Tamborski, Caitlin Brown, Henry Bokuniewicz, J. K. Cochran, E. T. Rasbury   +5 more
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Nitrogen transformations along a shallow subterranean estuary [PDF]

Biogeosciences, 2017
The transformations of chemical constituents in subterranean estuaries (STEs) control the delivery of nutrient loads from coastal aquifers to the ocean.
M. Couturier, M. Couturier, G. Tommi-Morin, G. Tommi-Morin, M. Sirois, M. Sirois, A. Rao, C. Nozais, G. Chaillou, G. Chaillou   +9 more
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A State-Of-The-Art Perspective on the Characterization of Subterranean Estuaries at the Regional Scale

Frontiers in Earth Science, 2021
Subterranean estuaries the, subsurface mixing zones of terrestrial groundwater and seawater, substantially influence solute fluxes to the oceans. Solutes brought by groundwater from land and solutes brought from the sea can undergo biogeochemical ...
Nils Moosdorf, Nils Moosdorf, Nils Moosdorf, Michael Ernst Böttcher, Michael Ernst Böttcher, Michael Ernst Böttcher, Dini Adyasari, Ercan Erkul, Benjamin S. Gilfedder, Janek Greskowiak, Anna-Kathrina Jenner, Lech Kotwicki, Gudrun Massmann, Mike Müller-Petke, Till Oehler, Vincent Post, Ralf Prien, Jan Scholten, Bernhard Siemon, Cátia Milene Ehlert von Ahn, Marc Walther, Hannelore Waska, Tina Wunderlich, Ulf Mallast   +23 more
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Distribution, Diversity, and Abundance of Nitrite Oxidizing Bacteria in the Subterranean Estuary of the Daya Bay

Frontiers in Marine Science, 2022
The oxidation of nitrite to nitrate as the second step of nitrification is vital for the global nitrogen cycle, and the genus Nitrospira is the most widespread nitrite-oxidizing bacteria (NOB) in diverse natural ecosystems.
Wei Sun, Wei Sun, Lijing Jiao, Jiapeng Wu, Mingken Wei, Yiguo Hong   +5 more
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The DynaDeep observatory – a unique approach to study high-energy subterranean estuaries

Frontiers in Marine Science, 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.
Gudrun Massmann, Gudrun Massmann, Grace Abarike, Kojo Amoako, Felix Auer, Thomas H. Badewien, Cordula Berkenbrink, Michael Ernst Böttcher, Michael Ernst Böttcher, Michael Ernst Böttcher, Simone Brick, Iris Valeria Medina Cordova, Jairo Cueto, Thorsten Dittmar, Thorsten Dittmar, Bert Engelen, Holger Freund, Janek Greskowiak, Janek Greskowiak, Thomas Günther, Gabriel Herbst, Moritz Holtappels, Hannah Karen Marchant, Hannah Karen Marchant, Rena Meyer, Rena Meyer, Mike Müller-Petke, Jutta Niggemann, Katharina Pahnke, Dietmar Pommerin, Vincent Post, Anja Reckhardt, Magali Roberts, Kai Schwalfenberg, Stephan L. Seibert, Stephan L. Seibert, Christopher Siebert, Nico Skibbe, Hannelore Waska, Christian Winter, Oliver Zielinski, Oliver Zielinski   +41 more
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Changes in Organic Matter Deposition Can Impact Benthic Marine Meiofauna in Karst Subterranean Estuaries

Frontiers in Environmental Science, 2021
Subsurface mixing of seawater and terrestrial-borne meteoric waters on carbonate landscapes creates karst subterranean estuaries, an area of the coastal aquifer with poorly understood carbon cycling, ecosystem functioning, and impact on submarine ...
David Brankovits, Shawna N. Little, Tyler S. Winkler, Anne E. Tamalavage, Luis M. Mejía-Ortíz, Christopher R. Maupin, German Yáñez-Mendoza, Peter J. van Hengstum, Peter J. van Hengstum   +8 more
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Response of Nitrate Processing to Bio-labile Dissolved Organic Matter Supply Under Variable Oxygen Conditions in a Sandy Beach Seepage Face

Frontiers in Marine Science, 2021
Supply of bio-labile dissolved organic matter (DOM) has been assumed to be a key factor for the intensity of nitrate (NO3–) removal in permeable coastal sediments.
Shan Jiang, Jie Jin, Ying Wu, Yixue Zhang, Yongjun Wei, Carlos Rocha, Juan Severino Pino Ibánhez, Juan Severino Pino Ibánhez, Jing Zhang, Jing Zhang   +9 more
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Molecular Traits of Dissolved Organic Matter in the Subterranean Estuary of a High-Energy Beach: Indications of Sources and Sinks

Frontiers in Marine Science, 2021
Advective flows of seawater and fresh groundwater through coastal aquifers form a unique ecohydrological interface, the subterranean estuary (STE). Here, freshly produced marine organic matter and oxygen mix with groundwater, which is low in oxygen and ...
Hannelore Waska, Heike Simon, Soeren Ahmerkamp, Janek Greskowiak, Janis Ahrens, Stephan L. Seibert, Kai Schwalfenberg, Oliver Zielinski, Oliver Zielinski, Thorsten Dittmar, Thorsten Dittmar   +10 more
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The Beach Aquifer Microbiome: Research Gaps and Data Needs

Frontiers in Environmental Science, 2021
Beach aquifers, located in the subsurface of sandy beaches, are unique ecosystems with steep chemical and physical gradients resulting from the mixing of terrestrial fresh groundwater and saline groundwater from the sea. While work has rapidly progressed
Anand Archana, Christopher A. Francis, Alexandria B. Boehm   +2 more
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