Article
Environmental Sciences
Te Liu, Stephan Krisch, Ruifang C. Xie, Mark J. Hopwood, Marcus Dengler, Eric P. Achterberg
Summary: The Benguela Upwelling System in the eastern South Atlantic Ocean is characterized by high nutrient concentrations and trace metals, which primarily come from benthic sources near the shelf and off-shelf transfer. Under future conditions of increasing ocean deoxygenation, these fluxes may increase further, potentially leading to more extensive regional limitation of primary production by fixed nitrogen availability.
GLOBAL BIOGEOCHEMICAL CYCLES
(2022)
Article
Environmental Sciences
Young-Jae Jeong, Bo-Seong Seo, Nuri Baek, Jin-Hyeob Kwak, Sang-Mo Lee, Hyun-Jin Park, Woo-Jung Choi
Summary: This study proposed methods for determining the δN-15 of multiple nitrogen species. The methods included traditional distillation, direct evaporation, and isotope mass balance equation. The accuracy and precision of the methods were evaluated through a series of experiments, and the influences of different conditions on the analysis results were assessed.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Environmental Sciences
Zhou Liang, Robert T. Letscher, Angela N. Knapp
Summary: Surface ocean bulk and semi-labile dissolved organic matter (DOM) stoichiometry vary across ocean regions with global means of 387:26:1 and 179:20:1, respectively. Surface ocean DOC:DOP and DON:DOP concentration ratios are more variable than DOC:DON concentration ratios. Surface ocean gradients in P-depleted DOM stoichiometries in the Pacific and Atlantic basins reflect variable nutrient stress.
GLOBAL BIOGEOCHEMICAL CYCLES
(2023)
Article
Environmental Sciences
Adam S. Wymore, Penny J. Johnes, Susana Bernal, E. N. Jack Brookshire, Hannah M. Fazekas, Ashley M. Helton, Alba Argerich, Rebecca T. Barnes, Ashley A. Coble, Walter K. Dodds, Shahan Haq, Sherri L. Johnson, Jeremy B. Jones, Sujay S. Kaushal, Pirkko Kortelainen, Carla Lopez-Lloreda, Bianca M. Rodriguez-Cardona, Robert G. M. Spencer, Pamela L. Sullivan, Christopher A. Yates, William H. McDowell
Summary: A comprehensive assessment of nitrogen species in stream water reveals shifts in dissolved nitrogen pool composition from highly heterogeneous to primarily inorganic nitrogen under nutrient enrichment from human disturbances. With increasing total dissolved nitrogen concentrations, inorganic nitrogen dominates the pool while dissolved organic nitrogen decreases. These changes in stoichiometry may have significant implications for global biogeochemical cycles of carbon and nitrogen in freshwater ecosystems.
GLOBAL BIOGEOCHEMICAL CYCLES
(2021)
Article
Environmental Sciences
Zhenwei Yan, Na Yang, Zhou Liang, Maojun Yan, Xiaosong Zhong, Yu Zhang, Wenqi Xu, Yu Xin
Summary: Large rivers like the Yellow River play a crucial role in the cycling of dissolved organic nitrogen (DON), with DON<1kDa dominating the DON pool and correlating inversely with dissolved inorganic nitrogen (DIN). Geographical features and microbial communities are closely related in driving DON cycling, highlighting the importance of DON mineralization in carbon cycling in marginal seas.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Geosciences, Multidisciplinary
Hewen Niu, Shichang Kang, Chandan Sarangi, Guotao Zhang, Mengxue Chen, Yuzhong Zhang, Huili Qin
Summary: This study systematically determines the organic and inorganic constituents in water bodies of the cryosphere region in the eastern Tibetan Plateau and finds that high-elevation water bodies have lower organic carbon content. Additionally, it suggests that atmospheric deposition and anthropogenic activities contribute to the observed patterns in organic carbon and nitrogen content.
Article
Environmental Sciences
Peidong Xu, Lei Shi, Xin Yang, Haoming Yang, Kuanhu Dong, Changhui Wang
Summary: Soil dissolved organic matter (DOM) plays a critical role in regulating the cycling of terrestrial biogeochemistry. N addition significantly increased soil DOM concentration, with a greater impact on dissolved organic nitrogen (DON) than dissolved organic carbon (DOC). The level of N addition was positively correlated with soil DOC and DON concentrations, and the influence of N addition on soil DOC concentration decreased with higher initial soil total nitrogen (TN). Mean annual precipitation (MAP) facilitated the leaching out of soil DON and had a negative impact on its concentration under N addition. Increased soil depth and initial soil pH affected the soil DOC and DON concentrations, with DOC accumulating in the top soil and DON leaching to deeper soil. This study provides a mechanistic understanding of the influence of N addition on terrestrial ecosystem C and N dynamics at the regional scale.
LAND DEGRADATION & DEVELOPMENT
(2023)
Article
Environmental Sciences
Mengyue Wu, Yini Ma, Huixiang Xie, Rong Ji
Summary: Photodissolution has the potential to efficiently remove microplastics from the surface ocean, and temperature and incident sunlight composition play critical roles in this process.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Yanan Liu, Xiaolong Yao
Summary: This study investigates the photochemical release of dissolved organic nitrogen (DON) from internal particles in lakes. The results show that solar irradiation induces the production of dissolved organic carbon and DON in algal detritus suspensions, and leads to changes in the composition of DON in both algal and sediment suspensions. The study also reveals higher photoammonification rates in algal suspensions. Overall, this research provides new molecular insights into the photochemical release of DON from typical internal particles in eutrophic lakes.
Article
Environmental Sciences
Xiuli Yan, Jin-Yu Terence Yang, Min Nina Xu, Hongjie Wang, Minhan Dai, Shuh-Ji Kao
Summary: Information on the sources and transformations of particulate organic N (PN) and dissolved organic N (DON) at the coastal interface remains insufficient due to technological difficulties and complicated features of intensive physical mixing and rapid biological activities. The study investigated the spatial distribution of concentrations and isotopic compositions of PN and DON in the Changjiang plume during the summer flood period, revealing nonconservative DON behaviors and active transformations between the DON and PN pools.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Yanwen Huang, Yao Du, Teng Ma, Yamin Deng, Yanqiu Tao, Yu Xu, Zhichao Leng
Summary: High levels of ammonium in groundwater can pose a potential threat to drinking water security and ecosystem health. This study investigated the role of dissolved organic matter (DOM) in mobilizing natural ammonium in groundwater, revealing that groundwater with higher ammonium levels had DOM characterized by larger molecular weight in a more reductive environment, while groundwater with lower ammonium levels had DOM with smaller molecular weight in a more oxidative condition.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Engineering, Civil
Ewen Silvester, Terry Karis, Anne Yusuf, John Pengelly, Samantha Grover, Gavin N. Rees
Summary: The study found that storm events mobilized dissolved organic carbon and nitrogen, with proteins playing a key role and exhibiting different dynamics at different stages of the storm. This suggests that there is spatial and temporal separation of molecular groups within the pools of dissolved organic carbon and nitrogen, leading to changing composition of DOC through a storm cycle.
JOURNAL OF HYDROLOGY
(2021)
Article
Geosciences, Multidisciplinary
Na Li, Ruiying Chang, Hui Jiang, Akash Tariq, Jordi Sardans, Josep Penuelas, Feng Sun, Xingmei Zhou
Summary: The experiment on grazing-exclusion and climate warming effects in alpine meadows revealed that grazing-exclusion significantly decreased potential nitrogen mineralization, and climate warming could amplify the adverse effects of grazing-exclusion. Light-intensity grazing was beneficial for increasing soil enzyme activity and nitrogen mineralization in alpine meadows, providing important guidance for sustainable grazing management in the face of climate change.
Article
Environmental Sciences
John H. Trefry, Austin L. Fox
Summary: This study showed that the concentrations of nitrogen and phosphorus in different tributaries increased with flow during heavy storm events, with statistically significant equations used to describe the relationship between concentration and flow rate. The different land uses in the drainage basins resulted in varying fluxes per square km, with higher yields of dissolved organic nitrogen and dissolved inorganic phosphorus in the tributary with thicker, more organic- and P-rich soils.Additionally, major weather events such as drought followed by excess rain and flooding were found to impact the nutrient fluxes and subsequent algal blooms in the Indian River Lagoon.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Agriculture, Multidisciplinary
Xiao Pu, Yanjia Hu, Hongguang Cheng, Jing Xie, Yuhu Zhang, Xingyong Li, Wenlong Song, Huan Xu, Shaokang Meng
Summary: This study investigated the effects of different land uses on dissolved nitrogen export in Baijiang soil area and found increased export of dissolved nitrogen through base flow and storm flow after conversion from dry croplands to paddy fields.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2022)
Review
Oceanography
S. Valiente, B. Fernandez-Castro, R. Campanero, A. Marrero-Diaz, A. Rodriguez-Santana, M. D. Gelado-Cabellero, M. Nieto-Cid, A. Delgado-Huertas, J. Aristegui, X. A. Alvarez-Salgado
Summary: The Cape Verde Frontal Zone (CVFZ) is a highly dynamic region with large fluxes of sinking organic matter. The distribution of dissolved and suspended particulate organic matter in this area is influenced by the position of transects and different water masses, indicating the role of biogeochemical processes in shaping water mass properties. However, mineralization of DOM and POM is low, highlighting the importance of sinking fluxes of organic matter for mineralization processes.
PROGRESS IN OCEANOGRAPHY
(2022)
Article
Environmental Sciences
Soren Hallstrom, Mar Benavides, Ellen R. Salamon, Javier Aristegui, Lasse Riemann
Summary: This study investigated the distribution of nitrogen fixation activity and diazotroph community across the Cape Verde Frontal Zone. The results showed variations in nitrogen fixation rates and community composition, with cyanobacteria dominating in both surface and aphotic waters. The findings also suggested the potential downward flux of metabolically active cyanobacteria and cross-frontal advection of cyanobacterial diazotrophs.
Review
Microbiology
Lasse Riemann, Eyal Rahav, Uta Passow, Hans-Peter Grossart, Dirk de Beer, Isabell Klawonn, Meri Eichner, Mar Benavides, Edo Bar-Zeev
Summary: Diverse non-cyanobacterial diazotrophs (NCDs) are found in various aquatic ecosystems, primarily inhabiting aggregates and playing a significant role in nitrogen cycling.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Valentine Meunier, Sophie Bonnet, Mercedes Camps, Mar Benavides, Jeff Dubosc, Riccardo Rodolfo-Metalpa, Fanny Houlbreque
Summary: Over the past decade, coral bleaching events have continued to occur and worsen. Feeding corals with planktonic diazotrophs (PD) can help them survive under high temperature stress and promote their growth. PDs provide an alternative source of bioavailable nitrogen and carbon, playing an important role in the recovery of coral bleaching.
Article
Ecology
Mar Benavides, Sophie Bonnet, Frederic A. C. Le Moigne, Gabrielle Armin, Keisuke Inomura, Soren Hallstrom, Lasse Riemann, Ilana Berman-Frank, Emilie Poletti, Marc Garel, Olivier Grosso, Karine Leblanc, Catherine Guigue, Marc Tedetti, Cecile Dupouy
Summary: The cyanobacteria Trichodesmium is capable of fixing N2 in the meso- and bathypelagic layers of the ocean. This activity contributes to the nutrient supply for organisms in the mesopelagic zone. The fixation rates of Trichodesmium are affected by hydrostatic pressure and temperature changes.
Article
Environmental Sciences
Alba Filella, Lasse Riemann, France Van Wambeke, Elvira Pulido-Villena, Angela Vogts, Sophie Bonnet, Olivier Grosso, Julia M. Diaz, Solange Duhamel, Mar Benavides
Summary: This study investigates the effect of P-anhydrides on diazotrophs in the ocean and finds that P-anhydrides can stimulate N-2 fixation in certain cyanobacteria under low phosphate concentrations. Moreover, the study also reveals that P-anhydrides can be used as an energy source by certain bacteria.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Ecology
Sophie Bonnet, Mar Benavides, Frederic A. C. Le Moigne, Mercedes Camps, Antoine Torremocha, Olivier Grosso, Celine Dimier, Dina Spungin, Ilana Berman-Frank, Laurence Garczarek, Francisco M. Cornejo-Castillo
Summary: Diazotrophs are widespread and play a significant role in regulating marine productivity. This study examines the fate of five groups of globally-distributed diazotrophs and finds that they can be exported to depths of 1000m. Small unicellular cyanobacterial diazotrophs show more efficient export compared to larger Trichodesmium. Analysis of data from other ocean basins supports these findings, suggesting that diazotrophs are transported to the deep ocean.
Article
Limnology
Markel Gomez-Letona, Javier Aristegui, Nauzet Hernandez-Hernandez, Maria Perez-Lorenzo, Xose Anton Alvarez-Salgado, Eva Teira, Marta Sebastian
Summary: This study investigates the vertical connectivity between surface productivity regimes and deep ocean prokaryotic communities. The results show that higher prokaryotic abundances and viabilities, as well as smaller cell sizes, are observed below highly productive surface waters. However, leucine uptake rates in deep waters do not show a clear relationship with surface productivity.
LIMNOLOGY AND OCEANOGRAPHY
(2023)
Correction
Environmental Sciences
Alba Filella, Lasse Riemann, France Van Wambeke, Elvira Pulido-Villena, Angela Vogts, Sophie Bonnet, Olivier Grosso, Julia M. Diaz, Solange Duhamel, Mar Benavides
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Meteorology & Atmospheric Sciences
Li-Qing Jiang, John Dunne, Brendan R. Carter, Jerry F. Tjiputra, Jens Terhaar, Jonathan D. Sharp, Are Olsen, Simone Alin, Dorothee C. E. Bakker, Richard A. Feely, Jean-Pierre Gattuso, Patrick Hogan, Tatiana Ilyina, Nico Lange, Siv K. Lauvset, Ernie R. Lewis, Tomas Lovato, Julien Palmieri, Yeray Santana-Falcon, Joerg Schwinger, Roland Seferian, Gary Strand, Neil Swart, Toste Tanhua, Hiroyuki Tsujino, Rik Wanninkhof, Michio Watanabe, Akitomo Yamamoto, Tilo Ziehn
Summary: This study presents a new model-data fusion product covering 10 global surface ocean acidification (OA) indicators based on 14 Earth System Models (ESMs) and three recent observational ocean carbon data products. The evolution of these indicators from preindustrial conditions to future scenarios is provided, offering a state-of-the-art research and management tool for understanding the combined stressors of global climate change and ocean acidification.
JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS
(2023)
Article
Environmental Sciences
Chloe Tilliette, Frederic Gazeau, Gemma Portlock, Mar Benavides, Sophie Bonnet, Catherine Guigue, Nathalie Leblond, Caroline Lory, Dominique Marie, Maryline Montanes, Elvira Pulido-Villena, Geraldine Sarthou, Marc Tedetti, Maria-Elena Vorrath, Hannah Whitby, Cecile Guieu
Summary: A hotspot of dinitrogen fixation has been identified in the Western Tropical South Pacific (WTSP) Ocean. The injection of hydrothermal fluids has a positive impact on biological nitrogen fixation and organic matter export, which in turn enhances phytoplankton growth and productivity.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Environmental Sciences
Yeray Santana-Falcon, Akitomo Yamamoto, Andrew Lenton, Chris D. Jones, Friedrich A. Burger, Jasmin G. John, Jerry Tjiputra, Jorg Schwinger, Michio Kawamiya, Thomas L. Frolicher, Tilo Ziehn, Roland Seferian
Summary: Anthropogenic warming of the oceans and associated deoxygenation are causing irreversible changes in marine ecosystems, particularly in marine habitats. These changes will have profound and long-lasting impacts on the viability of marine ecosystems.
COMMUNICATIONS EARTH & ENVIRONMENT
(2023)
Article
Ecology
Kristian Spilling, Jonna Piiparinen, Eric P. Achterberg, Javier Aristegui, Lennart T. Bach, Maria T. Camarena-Gomez, Elisabeth von der Esch, Martin A. Fischer, Markel Gomez-Letona, Nauzet Hernandez-Hernandez, Judith Meyer, Ruth A. Schmitz, Ulf Riebesell
Summary: The Peruvian upwelling system is a productive ecosystem with a large oxygen minimum zone (OMZ). A mesocosm experiment was conducted off Callao, Peru, with the addition of OMZ water collected from two different sites simulating different upwelling scenarios. The study focused on the pelagic remineralization of organic matter through the activity of leucine aminopeptidase (LAP) and alkaline phosphatase activity (APA). The results showed high enzyme activity, suggesting that bacterial community-driven pelagic N remineralization supported the high standing stock of primary producers in the mesocosms after N depletion.
Article
Ecology
Jens Hartmann, Niels Suitner, Carl Lim, Julieta Schneider, Laura Marin-Samper, Javier Aristegui, Phil Renforth, Jan Taucher, Ulf Riebesell
Summary: Ocean alkalinity enhancement (OAE) is a carbon dioxide removal (CDR) approach with potential for countering ocean acidification. However, its real-world application requires safe and sustainable procedures for adding alkalinity to seawater. The stability of alkalinity when added to seawater is a concern, as it can lead to carbonate precipitation and reduce the efficiency of CO2 removal. Experiments show that using CO2-equilibrated alkaline solution poses the lowest risk of losing alkalinity, while the addition of reactive alkaline solids can cause net loss if added alkalinity exceeds certain levels. Precipitates formed can partially redissolve, suggesting that net loss of alkalinity may not be permanent.
Article
Ecology
Allanah Joy Paul, Lennart Thomas Bach, Javier Aristegui, Elisabeth von der Esch, Nauzet Hernandez-Hernandez, Jonna Piiparinen, Laura Ramajo, Kristian Spilling, Ulf Riebesell
Summary: Upwelling in the ocean has significant impacts on the productivity of ecosystems in eastern boundary upwelling systems. Besides traditional nutrients, subsurface waters also contain micronutrients, organic matter, and seed microbial communities, which may modify the response of the ecosystem to nutrient inputs. This study found that the ratio of inorganic nutrients and the presence of microbial communities are the most influential factors in driving the response of plankton communities to upwelling.
Article
Geosciences, Multidisciplinary
X. Flores-Melo, R. Giesecke, I. R. Schloss, M. P. Latorre, X. Durrieu de Madron, F. Bourrin, M. L. Spinelli, C. Menniti, H. E. Gonzales, E. Menschel, J. Martin
Summary: This study presents an evaluation of the downward fluxes and composition of particulate matter in the Beagle Channel. The results show that the fluxes and composition of particulate matter differ between the western and eastern parts of the channel, with the former influenced by glacial and organic material, and the latter dominated by river inputs and phytoplankton blooms. This research contributes to understanding the impact of climate change on the biological carbon pump and land-sea connections in this high-latitude ecosystem.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
Simone M. A. Lira, Ralf Schwamborn, Mauro de Melo Junior, Humberto L. Varona, Syumara Queiroz, Doris Veleda, Alef J. Silva, Sigrid Neumann-Leitao, Moacyr Araujo, Catarina R. Marcolin
Summary: In this study, CTD and ADCP data, as well as zooplankton samples from Fernando de Noronha Archipelago, were used to analyze the relationship between flow, island topography, chlorophyll-a fluorescence, and zooplankton abundance. The study found the presence of island and larval island effects downstream, and an upstream island effect upstream.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
Olga Yu. Evseeva, Alexander G. Dvoretsky
Summary: This study investigated the species composition and spatial distribution of bryozoan diversity in the southern region of Franz Josef Land. A total of 151 bryozoan species were found, including 22 species recorded for the first time in this region. The diversity of bryozoans in this area is influenced by environmental factors such as depth, temperature, and the content of stones and shells.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
Emma F. Young, Sally E. Thorpe, Angelika H. H. Renner, Eugene J. Murphy
Summary: Antarctic krill is a key species in the Southern Ocean and also the target of a commercial fishery. This study focuses on understanding the physical and behavioral drivers of krill movement and retention in the South Orkney Islands region through a regional modeling approach. The results suggest that oceanic transport and retention of krill are influenced by oceanographic variability and krill behavior.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
Viviane David, Anne Mouget, Pierre Thiriet, Corentin Minart, Yannick Perrot, Loic Le Goff, Olivier Bianchimani, Solene Basthard-Bogain, Tristan Estaque, Justine Richaume, Jean-Francois Sys, Adrien Cheminee, Eric Feunteun, Anthony Acou, Patrice Brehmer
Summary: Scientists combined split-beam and multibeam echosounders to detect and classify different fish species, and found that acoustic data significantly improved the accuracy of species classification. These acoustic methods have important implications for marine management and decision-making.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
Jia-Hui Xie, Xue-Lin Shao, Kai Ma, Li Gao
Summary: Chaetomorpha linum can store a large amount of phosphorus and utilize it for growth when phosphate is abundant, and it can produce alkaline phosphatase and release mobile phosphorus from sediments when phosphate is deficient. The sources of phosphorus supporting the blooms of C. linum vary seasonally in Swan Lagoon.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
A. A. Kubryakov, A. I. Mizyuk, S. V. Stanichny
Summary: This article investigates the evolution of the Sevastopol eddies using altimetry measurements and a high-resolution Nemo numerical model. The eddies can reside in the Black Sea for >3-6 months, impacting cross-shelf exchange and nutrient fluxes. The stationarity of the eddies is mainly due to the continental slope acting as a barrier, preventing cyclonic propagation.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
Qingyuan Yang, Guoping Zhu
Summary: This study investigated the feeding habits of the spiny icefish in the Bransfield Strait and used biochemical tracers to demonstrate the variability in its diet, which is influenced by the availability of krill and the dynamic hydrography. The results highlight the potential of biochemical tracers in reflecting changes in prey's diet in a highly dynamic environment.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
Andreana Cadaillon, Clara M. Iachetti, Ricardo Giesecke, Valeska Vasquez Lepio, Andrea Malits, Irene R. Schloss
Summary: A joint Chilean-Argentinian research cruise in the Beagle Channel revealed spatial and temporal heterogeneity of plankton abundance and composition. Plankton assemblages varied with bathymetry, water temperature, and nutrient availability. The easternmost sector of the channel had the highest total cell abundances and a diverse mix of small and large diatoms.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
Barbara P. Paiva, Carlos A. F. Schettini, Eduardo Siegle
Summary: The Sao Francisco River is an important river in Brazil, crossing the semi-arid region. A series of dams have been built along the river for hydropower, changing the flow significantly. A hydrodynamic model was used to simulate the effects of flow changes on saline intrusion in the estuary. The simulations showed an increase in mixing and decrease in river contribution after the dams were built. The results can be used by management agencies to improve water quality for human consumption.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
Xu Dong, Di Qi, Baohong Chen, Yingxu Wu, Xinqing Zheng, Hui Lin
Summary: Seasonal-scale local forcings reduce coastal pH and aragonite saturation state. The dynamics of carbonate system parameters were investigated in a coral habitat influenced by seasonal current patterns. Both Oaragonite and pH showed seasonal variations, controlled by dissolved inorganic carbon (DIC) and temperature. Ocean acidification scenarios projected a decrease in Oaragonite amplitude and an increase in hydrogen ion concentration ([H+]) amplitude.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
Roman Cieslinski, Izabela Chlost, Michal Szydlowski
Summary: The Vistula Lagoon, one of the two lagoons on the Polish coast, is economically and environmentally significant. This study aims to calculate the water balance of the lagoon before and after the construction of a canal through the Vistula Spit. The construction of the new connection may impact the lagoon's water balance and its biotic and abiotic environment. Data on precipitation, evaporation, inflow from the catchment, and inflow/outflow through the Strait of Baltiysk were collected for mathematical modeling. The study suggests that the construction of the new canal will not significantly alter the lagoon's water balance but may cause environmental problems.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
F. P. Brandini, A. M. Silver, A. Gangopadhyay
Summary: We demonstrate that wind-driven Ekman transport enhances the advection and mixing of cells, leading to the transport of colder water from the Surface Antarctic Waters to the warmer waters of the northern Polar Front belt. This mechanism provides cells with a favorable temperature environment, allowing for specific species and community growth rates to develop blooms under non-light limiting macronutrients and iron conditions. Our findings have important implications for increased productivity in a future warming climate.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
John E. Garzon-Cardona, Ana M. Martinez, Boris P. Koch, Bernd Krock, Elbio D. Palma, Xianyu Kong, Ruben J. Lara
Summary: This study aimed to gain a better understanding of the role of dissolved organic matter (DOM) in the biogeochemistry of the Southern Patagonian shelf. The results showed that terrigenous input is the main source of ammonium and refractory carbon in the region, while the Antarctic Circumpolar Current contributes autochthonous DOM. Additionally, regeneration processes of nitrogen-rich water were found in the Tierra del Fuego Waters and Grande Bay regions.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
Manoranjan Mishra, Tamoghna Acharyya, Bijay Halder, Celso Augusto Guimara Santos, Richarde Marques da Silva, Nihar Ranjan Rout, Debdeep Bhattacharyya
Summary: This study comprehensively analyzes the impacts of Tropical Cyclone Yaas on the mangrove forest in Bhitarkanika National Park, revealing significant ecosystem loss and changes in vegetation vigor and soil conditions, particularly an increase in salinity.
JOURNAL OF MARINE SYSTEMS
(2024)