Article
Environmental Sciences
Gudrun Massmann, Grace Abarike, Kojo Amoako, Felix Auer, Thomas H. Badewien, Cordula Berkenbrink, Michael Ernst Boettcher, Simone Brick, Iris Valeria Medina Cordova, Jairo Cueto, Thorsten Dittmar, Bert Engelen, Holger Freund, Janek Greskowiak, Thomas Guenther, Gabriel Herbst, Moritz Holtappels, Hannah Karen Marchant, Rena Meyer, Mike Mueller-Petke, Jutta Niggemann, Katharina Pahnke, Dietmar Pommerin, Vincent Post, Anja Reckhardt, Magali Roberts, Kai Schwalfenberg, Stephan L. Seibert, Christopher Siebert, Nico Skibbe, Hannelore Waska, Christian Winter, Oliver Zielinski
Summary: Subterranean estuaries are connective zones where terrestrial freshwater and seawater mix and undergo significant biogeochemical changes. High-energy subterranean estuaries are dynamic environments with strong spatio-temporal variability of geochemical conditions, forming a unique habitat with adapted microbial communities. However, research on these estuaries is limited, leading to little understanding of their functioning and importance for coastal ecosystems.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Environmental Sciences
Andrea J. Pain, Jonathan B. Martin, Caitlin R. Young
Summary: Submarine groundwater discharge to coastal zones can contribute to harmful algal blooms through the input of terrestrial freshwater and nutrients. The magnitude of nutrient exports via SGD depends on the chemical composition of groundwater and biogeochemical processes within subterranean estuaries. Variability in nutrient concentrations and transformations within subterranean estuaries can lead to heterogeneous nutrient contributions via SGD, complicating assessments of regional and global solute cycles.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Food Science & Technology
Micha Horacek, Mounira Lage, Jyoti Vakhlu
Summary: Saffron is considered the most expensive spice due to its labor-intensive harvest. Iran dominates the global saffron market, with other countries having much smaller production. To protect local saffron production, control of geographic origin is required.
Article
Environmental Sciences
J. Severino P. Ibanhez, Xose Anton Alvarez-Salgado, Carlos Rocha
Summary: Coastal groundwater contamination due to fertilizers has led to submarine groundwater discharge (SGD) being considered a significant source of dissolved inorganic nitrogen (DIN) to the ocean. Observations show increased availability of NO3- in the subterranean estuary (STE) with DIN enrichment, leading to enhanced metabolic turnover of sedimentary organic matter.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Chemistry, Analytical
Hou-Chun Liu, Yen-Hong Chen, Chen-Feng You, Chuan-Hsiung Chung
Summary: The natural fractionation of stable Sr isotopes has attracted attention as a new tracer, and a novel approach using Zr isotope empirical external normalization (EEN) and Sr-84-Sr-87 double spike (DS) was proposed to improve the analytical accuracy of delta Sr-88/86 determination by MC-ICP-MS.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2021)
Article
Environmental Sciences
Jeonghyun Kim, Byung-Chan Song, Min-Young Lee, Tae-Hoon Kim
Summary: This study conducted monthly hydrological surveys to determine nutrient fluxes derived from submarine groundwater discharge (SGD) in the coast of Jeju Island. The concentrations of dissolved inorganic nitrogen, dissolved inorganic phosphorus, and dissolved silicon were significantly correlated with salinity, suggesting that fresh SGD is the primary nutrient source in this area. The nutrient fluxes were higher during rainy season and when typhoons occurred, while fertilizer input from agriculture activity caused increased nutrient fluxes during spring.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Chemistry, Analytical
Nan Sun, Xu-Qi Chen, Lan-Lan Tian, Fang Huang
Summary: This study presents a method for high-precision stable Sr isotope measurement in barite using the Na2CO3 exchange reaction and MC-ICP-MS. The reliability of the method was tested by analyzing synthetic barite standards, showing consistency with natural barite standard values. The study also revealed significant stable Sr isotope fractionation in natural barites, with an average fractionation of 0.37 parts per thousand.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2022)
Article
Engineering, Civil
Shengchao Yu, Xiaolang Zhang, Hailong Li, Xuejing Wang, Chaoyue Wang, Xingxing Kuang
Summary: This study investigates the process of wave-induced submarine groundwater discharge (SGD). The results show that the loading effect decreases the head gradients between seawater and porewater, while wave-induced SGD generally increases with the aquifer's thickness and permeability.
JOURNAL OF HYDROLOGY
(2022)
Article
Oceanography
L. M. Hernandez-Terrones, J. Street, K. Null, A. Paytan
Summary: Measurements of radiogenic strontium isotopic ratios and solute concentrations in groundwater samples from the eastern coastal area of Quintana Roo, Mexico were used to assess connectivity and water-rock interactions within different groundwater systems in the region. Three distinct groundwater systems were identified: Cancun-Puerto Morelos in the north, Tulum-Sian Ka' an in the center, and Xcalak in the south. Water-rock interactions within each aquifer system include dissolution of evaporites, precipitation of carbonate, sulfate reduction, and mixing with seawater, highlighting the importance of groundwater chemistry in understanding connectivity and potential anthropogenic impacts on groundwater quality and coastal ecosystems.
CONTINENTAL SHELF RESEARCH
(2021)
Review
Geosciences, Multidisciplinary
Aaron Alorda-Kleinglass, Isabel Ruiz-Mallen, Marc Diego-Feliu, Valenti Rodellas, Joan Manuel Bruach-Mench, Jordi Garcia-Orellana
Summary: This study systematically examines the social implications of Submarine Groundwater Discharge (SGD) using an Ecosystem Service perspective, revealing a focus on supporting services and a lack of research on cultural services. Through a detailed review of literature and case studies, it is shown that Ecosystem Services can have multiple synergies and trade-offs, resulting in unequal impacts among stakeholder groups.
EARTH-SCIENCE REVIEWS
(2021)
Article
Geosciences, Multidisciplinary
Yan Zhang, Xuejing Wang, Yan Xue, Changpei Zou, Manhua Luo, Gang Li, Lei Li, Laitong Cui, Hailong Li
Summary: This study examined the research status and environmental effects of submarine groundwater discharge (SGD) in China. The results showed that estuarine areas had higher concentrations of groundwater nutrients and SGD rates compared to other coastal ecosystems studied. SGD-derived nutrient fluxes significantly affected the nutrient budget, composition, and primary productivity of coastal waters in China.
SCIENCE CHINA-EARTH SCIENCES
(2022)
Article
Agronomy
David Uhlig, Anne E. Berns, Bei Wu, Wulf Amelung
Summary: This study aims to explore the effects of removing root restricting layers through subsoil management on the mean nutrient uptake depth of cereal crops. The results show that subsoil management through deep loosening, cultivation of deep-rooting pre-crops, and compost incorporation can change the mean nutrient uptake depth of crops. Additionally, nutrient uplift from depth to topsoil was confirmed after soil management.
Article
Environmental Sciences
Beata Szymczycha, Michael Ernst Boettcher, Magdalena Diak, Katarzyna Koziorowska-Makuch, Karol Kulinski, Przemyslaw Makuch, Catia Milene Ehlert von Ahn, Aleksandra Winogradow
Summary: The influence of hypoxic submarine groundwater discharge on the carbonate system of coastal seawater is still poorly understood. This study investigates the production of dissolved inorganic carbon and alkalinity in coastal sediments under the impact of oxygen-deficient SGD. It finds that SGD can potentially contribute to ocean acidification and affect the functioning of calcifying invertebrates.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Environmental Sciences
Jaydeo K. Dharpure, Ajanta Goswami, Akansha Patel, Anil V. Kulkarni, Thamban Meloth
Summary: This study developed a new drought index, the Combined Terrestrial Evapotranspiration Index (CTEI), by combining GRACE data and meteorological parameters to comprehensively identify and monitor drought in the Indus, Ganga, and the Brahmaputra river basins. The results showed good correlation between CTEI and pre-existing drought indices as well as in-situ groundwater drought indices, demonstrating the potential of CTEI for drought characterization and severity quantification.
GEOCARTO INTERNATIONAL
(2022)
Article
Environmental Sciences
Xuejing Wang, Yan Zhang, Chunmiao Zheng, Manhua Luo, Shengchao Yu, Meiqing Lu, Hailong Li
Summary: This study in the Guangdong-HongKong-Macao Greater Bay Area in China investigated the impact of both submarine groundwater discharge (SGD) and river discharges on the carbon cycle. It found that SGD and rivers play significant roles in carbon flux, affecting marine carbonate system balance and biological production.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Meteorology & Atmospheric Sciences
K. Suresh, Udisha Singh, Ashwini Kumar, Damodararao Karri, Aditya Peketi, V Ramaswamy
Summary: This study investigates the wet deposition of particulate matter in the Northeastern Arabian Sea during the southwest monsoon, focusing on major elements, rare earth elements, mineralogical composition, and isotopic compositions. It found significant temporal variability in REEs patterns, mineral compositions, and isotopic compositions, indicating changing dust sources during different phases of the monsoon season. The identified sources using geochemical tracers were supported by satellite images and back-trajectory analyses.
ATMOSPHERIC RESEARCH
(2021)
Article
Environmental Sciences
Karri Damodararao, Sunil K. Singh, Vinai K. Rai, V Ramaswamy, P. S. Rao
FRONTIERS IN MARINE SCIENCE
(2016)
Article
Geochemistry & Geophysics
Xinze Lu, Geoffrey J. Gilleaudeau, Brian Kendall
Summary: The Late Ordovician mass extinction is the first major extinction event in the Phanerozoic, but the reasons for the decline in global biodiversity before the extinction are not well understood.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2024)
Article
Geochemistry & Geophysics
Junyao Kang, Daniel D. Gregory, Benjamin Gill, Shiqiang Huang, Changxin Lai, Zhaoshan Chang, Huan Cui, Ivan Belousov, Shuhai Xiao
Summary: Sedimentary pyrite is an important geological archive, but it can be altered by diagenetic and hydrothermal processes. This study successfully trained machine learning algorithms to distinguish pyrite origins using trace element data. The approach was validated and applied to identify the origins of pyrite in two sedimentary successions in South China.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2024)
