Article
Oceanography
Vincent Combes, Ricardo P. Matano, Elbio D. Palma
Summary: The interaction between the Brazil Current and the adjacent shelf can be observed in satellite-derived products. However, these assessments are limited to the surface layer. This study uses numerical experiments to analyze the regional circulation and dynamics, identifying high variability regions and the contribution of eddies to cross-shelf mass exchanges.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2023)
Article
Environmental Sciences
Jorge. A. Kurczyn, Rodrigo Duran, Emilio Beier, Alejandro J. Souza
Summary: Upwelling events over the Yucatan Shelf are crucial physical phenomena during spring and summer. While previous studies focused on the eastern side, recent research has shown evidence of upwelling on the western shelf, providing insights into the origin and migration patterns of upwelled water in that region. Understanding the occurrence and impact of these events on the western shelf is important for studying marine ecology and climate change in the area.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Ecology
M. Amo-Seco, C. G. Castro, N. Villacieros-Robineau, F. Alonso-Perez, R. Grana, G. Roson, P. Berg
Summary: This study investigated benthic oxygen fluxes in muddy sediment in Ria de Vigo during two seasons, June and October, using the aquatic eddy covariance (AEC) technique. The results showed that despite differences in hydrodynamic and biogeochemical conditions, the seasonal benthic oxygen fluxes were not significantly different between the two campaigns. Different drivers influenced benthic fluxes in June and October, highlighting the importance of using non-invasive techniques like AEC to understand benthic flux dynamics.
MARINE ECOLOGY PROGRESS SERIES
(2021)
Article
Oceanography
Mathieu Gentil, France Floc'h, Thomas Meunier, Angel Ruiz-Angulo, Gildas Roudaut, Yannick Perrot, Anne Lebourges-Dhaussy
Summary: Turbulent mixing on continental shelves plays critical roles in marine ecosystems, nutrient cycling, and pollutant dispersion. Understanding internal wave dynamics is key to improving the mapping of mixing processes in complex environments, such as upwelling systems. Internal waves contribute to variability in mixing processes and play a significant role in the dynamics of marine environments.
CONTINENTAL SHELF RESEARCH
(2021)
Article
Environmental Sciences
Anil Akpinar, Ehsan Sadighrad, Bettina A. Fach, Sinan Arkin
Summary: This study investigated cross-shelf exchanges in the Black Sea using remote sensing data and an ocean circulation model. The results showed that eddies play a significant role in the transport of low salinity and high Chl-a waters. The southeast Black Sea was identified as an important area for cross-shelf transport.
Article
Geosciences, Multidisciplinary
Kuo Chen, Cuiping Kuang, Yaping Wang, Tao Wang, Changwei Bian
Summary: The study found through field observations that there are strong tidal currents and significant stratification in the frontal zone of the Yangtze River, affecting sediment suspension and erosion on the seabed, with different cross-shelf sediment transport characteristics in winter and summer.
JOURNAL OF MARINE SYSTEMS
(2021)
Article
Environmental Sciences
Arseny Kubryakov, Anna Aleskerova, Evgeniy Plotnikov, Artem Mizyuk, Alesya Medvedeva, Sergey Stanichny
Summary: High- and medium-resolution satellite optical imagery shows that submesoscale cyclonic eddies can trap coastal waters and induce their rapid cross-shelf transport. This phenomenon may cause intense short-period cross-shelf transport of biological and chemical characteristics in coastal waters, thereby affecting the functioning of marine ecosystems.
Article
Environmental Sciences
Lingjing Xu, Dezhou Yang, Xingru Feng, Junchuan Sun, Guandong Gao, Xuan Cui, Baoshu Yin
Summary: The Kuroshio Current is an important source of nutrients for the East China Sea (ECS) due to the large amount of nutrients it carries. The influence of mesoscale eddies on the Kuroshio nutrient input into the ECS is unknown. A hydrodynamic model with constructed cyclonic and anticyclonic eddies is used to explore this influence. The results show that cyclonic eddies reduce on-shelf phosphate flux, while anticyclonic eddies increase Kuroshio phosphate input to the ECS.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Marine & Freshwater Biology
Busra Basaran, H. Anil Ari Guner
Summary: The study investigated the impact of changes in wave climate on longshore sediment transport at Karasu coast in the Black Sea. It found that swell waves have a significantly larger contribution to sediment transport than wind waves, with a decrease in gross LST rate being associated with a decrease in swell wave height.
ESTUARINE COASTAL AND SHELF SCIENCE
(2021)
Review
Oceanography
Claude Estournel, Guillaume Mikolajczak, Caroline Ulses, Francois Bourrin, Miquel Canals, Sabine Charmasson, David Doxaran, Thomas Duhaut, Xavier Durrieu de Madron, Patrick Marsaleix, Albert Palanques, Pere Puig, Olivier Radakovitch, Anna Sanchez-Vidal, Romaric Verney
Summary: A simulation was conducted to study sediment transport, erosion and deposition in the Gulf of Lion. The simulation compared simulated and observed data to assess reliability. The results showed sediment accumulation near the Rhone River mouth, accretion along the mid-shelf mud belt, and the impact of dense shelf water cascading on sediment resuspension and erosion. The study found an unbalanced sedimentary system with a deficit mainly over the inner shelf due to reduced inputs from the Rhone River.
PROGRESS IN OCEANOGRAPHY
(2023)
Article
Marine & Freshwater Biology
Jue Li, Lulu Qiao, Yi Zhong, Wenjing Xue, Hongda Yang
Summary: This study confirmed the existence of cross-shelf transport off northern Taiwan through remote sensing data and heat flux data, which can be categorized into cold eddy and cold water tongue patterns. Topographic changes and the presence of a thermal front are important factors in inducing cross-shelf transport. Strong winds and typhoons can also enhance cross-shelf transport.
ESTUARINE COASTAL AND SHELF SCIENCE
(2023)
Article
Oceanography
P. Chabert, F. d'Ovidio, V. Echevin, M. R. Stukel, M. D. Ohman
Summary: Eastern Boundary Current Upwelling Systems are crucial in the global carbon cycle due to elevated primary production and carbon export. Variability in cross-shore flows in the California current ecosystem is influenced by mesoscale and large-scale climate forcing, impacting the ratio of in-situ new production to carbon export and the balance of production and sinking in the region.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2021)
Article
Engineering, Civil
Yan Ding, Richard Styles, Sung-Chan Kim, Rusty L. Permenter, Ashley E. Frey
Summary: A process-based parametric closure model has been developed for estimating cross-shore sediment transport rate to simulate long-term shoreline evolution. The model includes calculations of various subaqueous transport components and nonlinear wave effects to predict on- and offshore transport rates. Calibration and validation show improved accuracy in predicting shoreline changes, especially during different energy conditions, and the model's inclusion of CST has enhanced the simulation of sediment bypassing through coastal structures.
JOURNAL OF WATERWAY PORT COASTAL AND OCEAN ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Nidhi Sinha, Mi-Young Song, Hyonu Chang, Heechol Choi, Hyun-Jae Jang, Yeon-Ho Oh, Ki-Dong Song
Summary: This study investigates the electron impact scattering from C3F6O as a substitute gas for SF6. The critical dielectric strength of C3F6O is found to be greater than SF6, and the effect of different buffer gases is analyzed. The study shows the potential of C3F6O as a substitute gas for SF6.
APPLIED SCIENCES-BASEL
(2023)
Article
Meteorology & Atmospheric Sciences
Jiajia Hao, Dongliang Yuan, Di Tian, Jian Su, Thomas Pohlmann
Summary: The study finds that under future climate change scenarios, the cross-shelf exchanges in the Yellow and East China Seas are projected to increase, indicating their potential importance in carbon transportation and storage.
Article
Microbiology
Maria Garcia-Portela, Beatriz Reguera, Jesus Gago, Mickael Le Gac, Francisco Rodriguez
Article
Oceanography
Mariana Santos, Helena Mourino, Maria Teresa Moita, Alexandra Silva, Ana Amorim, Paulo B. Oliveira
CONTINENTAL SHELF RESEARCH
(2020)
Article
Marine & Freshwater Biology
Adriana Zingone, Laura Escalera, Katerina Aligizaki, Margarita Fernandez-Tejedor, Amany Ismael, Marina Montresor, Patricija Mozetic, Seyfettin Tas, Cecilia Totti
Summary: The spatial distribution of toxic marine microalgal species and the impacts of harmful algal events in the Mediterranean Sea were reviewed based on OBIS databases. Mainly affecting human health and aquaculture, toxicity-related events are not frequent in the MS.
Article
Plant Sciences
Maria Saggiomo, Laura Escalera, Vincenzo Saggiomo, Francesco Bolinesi, Olga Mangoni
Summary: A study found two distinct phytoplankton blooms dominated by nanoflagellates under the landfast ice in Terra Nova Bay during late spring-early summer 2015/2016. These species, typically found in fresh waters, may indicate a great input of continental waters related to environmental changes.
JOURNAL OF PHYCOLOGY
(2021)
Article
Paleontology
M. Saggiomo, L. Escalera, F. Bolinesi, P. Rivaro, V Saggiomo, O. Mangoni
Summary: Phytoplankton blooms in the Ross Sea mainly occur during late spring to early summer, dominated by diatoms and the haptophyte Phaeocystis antarctica. Species composition of diatoms shows variations in different seasons and regions, impacting the Antarctic food web.
MARINE MICROPALEONTOLOGY
(2021)
Article
Food Science & Technology
Alistair L. Wilkins, Thomas Rundberget, Morten Sandvik, Frode Rise, Brent K. Knudsen, Jane Kilcoyne, Beatriz Reguera, Pilar Rial, Elliott J. Wright, Sabrina D. Giddings, Michael J. Boundy, Cheryl Rafuse, Christopher O. Miles
Summary: Two high-mass polar compounds, identified as 24-O-beta-D-glucosides of okadaic acid and dinophysistoxin-2, were isolated from Dinophysis blooms and contaminated shellfish. The study also identified other similar compounds in a range of extracts from different locations, providing insights into the toxicology, metabolism, and biosynthesis of marine biotoxins in the okadaic acid group.
Review
Environmental Sciences
Jose A. Fernandes-Salvador, Keith Davidson, Marc Sourisseau, Marta Revilla, Wiebke Schmidt, Dave Clarke, Peter I. Miller, Paola Arce, Raul Fernandez, Luz Maman, Alexandra Silva, Callum Whyte, Maria Mateo, Patricia Neira, Marcos Mateus, Manuel Ruiz-Villarreal, Luis Ferrer, Joe Silke
Summary: The shellfish aquaculture industry in the European Atlantic Arc is impacted by harmful algal blooms that produce biotoxins accumulating in shellfish flesh, affecting consumer health. Regulatory monitoring focuses on harmful cells and toxin concentrations, but there is a need for early warning systems for business planning. Web portals and operational Early Warning Systems (EWS) are being developed, incorporating environmental data parameters and varied forecasting approaches to mitigate HAB-generated harmful effects. Advanced EWS include satellite data and oceanographic modeling to predict HAB behavior, with traffic light indices for easy risk assessment and expert interpretation of multiple data streams for future risk assessment. Proof-of-concept EWS combine model information with in-situ data, sometimes using machine learning-based approaches.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Chemistry, Medicinal
Patricio A. Diaz, Gonzalo Alvarez, Gemita Pizarro, Juan Blanco, Beatriz Reguera
Summary: Chile is the world's major exporter of mussels and scallops, but the lipophilic toxins produced by microalgal species can have negative impacts on both shellfish exploitation and human health. The most widespread LT producers in Chile are species of the Dinophysis acuminata complex and Protoceratium reticulatum. The current official method for shellfish safety control in Chile is the mouse bioassay, but it has limitations that can hinder progress in toxin identification and result in unnecessary harvesting bans.
Article
Environmental Sciences
Manuel Ruiz-Villarreal, Marc Sourisseau, Phil Anderson, Caroline Cusack, Patricia Neira, Joe Silke, Francisco Rodriguez, Begona Ben-Gigirey, Callum Whyte, Solene Giraudeau-Potel, Loic Quemener, Gregg Arthur, Keith Davidson
Summary: Harmful algal blooms (HABs) pose risks to human health and the Blue Economy, so an effective early warning system is needed. The EU PRIMROSE project focuses on developing HAB early warning systems. Improvements in forecasting systems require tool development, data flow optimization, and additional data inputs to assess HAB species distribution. This article reviews different technologies for acquiring HAB data and shares experiences from the project's collection exercises.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Michael Bedington, Luz Maria Garcia-Garcia, Marc Sourisseau, Manuel Ruiz-Villarreal
Summary: The availability of operational regional hydrodynamic models and near real-time Harmful Algal Bloom (HAB) alerts has enabled the development of short-term advective HAB forecasts. However, the predictive ability of these models in simulating HAB transport needs to be continuously evaluated for different HAB species and domains.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Ecology
L. M. Garcia-Garcia, M. Ruiz-Villarreal
Summary: This study successfully implemented a coupled physical-biogeochemical model to accurately simulate the variability of biogeochemical variables in the N and NW Iberia region. The model accurately reproduced the timing and interannual variability of the spring bloom and complemented observational data to reveal the variability in the area around the spring transition.
MARINE ECOLOGY PROGRESS SERIES
(2023)
Article
Marine & Freshwater Biology
Esther Velasco-Senovilla, Patricio A. Diaz, Enrique Nogueira, Francisco Rodriguez, Jose L. Garrido, Manuel Ruiz-Villarreal, Beatriz Reguera
Summary: In the Galician Rias Baixas, Dinophysis acuminata is the main cause of harmful algae bloom (HAB) events which result in shellfish harvesting bans in Europe. This study reveals rapid changes in the vertical and across ria-shelf distributions of D. acuminata during transitions from spin-down to spin-up phases of upwelling cycles. The results suggest that abiotic (bottom-up) control outweighs biological constraints in determining the distribution of D. acuminata.
Review
Chemistry, Analytical
F. Rodriguez, L. Escalera, B. Reguera, E. Nogueira, A. Bode, M. Ruiz-Villarreal, A. E. Rossignoli, B. Ben-Gigirey, V. Rey, S. Fraga
Summary: The Galician rias in Spain are coastal embayments suitable for aquaculture activities and national shellfish production. Phytoplankton blooms, known as red tides, occur naturally in these rias but are not systematically monitored. However, recent exceptions of toxic red tides have been observed. This study provides a historical overview of red tides in the Galician rias, discussing their characteristics, responsible organisms, occurrence, and proposing improvements for monitoring in the future.
ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS
(2023)
Article
Oceanography
Martinho Marta-Almeida, Anna Dalbosco, David Franco, Manuel Ruiz-Villarreal
Summary: The study conducted a thorough investigation on the plumes from the rivers in the South Brazilian Bight and South Brazil, revealing that the variability of river plumes on continental shelves is mainly driven by river runoff input, wind variability, and ambient currents. It also found that local river plumes are mainly controlled by wind forcing and are influenced by environmental currents.