Article
Environmental Sciences
Kimberley Desjardins, Melissa Khadra, Antoine Caron, Dominic E. Ponton, Maikel Rosabal, Marc Amyot
Summary: This study examines the subcellular partitioning of metals at relatively low contamination levels, considering their chemical affinity and essentiality. The results show that metals are distributed among subcellular fractions based on their chemical affinity, with some metals being associated with specific metal-sensitive fractions.
ENVIRONMENTAL POLLUTION
(2022)
Article
Engineering, Environmental
Abigaelle Dalpe Castilloux, Magali Houde, Andree Gendron, Amila De Silva, Youssouf Djibril Soubaneh, Zhe Lu
Summary: The study on the St. Lawrence River showed that BHTQ was the dominant contaminant in dissolved water, and sediment had higher sorption capacities for most target contaminants compared to SPM. Different contamination profiles were found in lake sturgeon and northern pike, indicating that the accumulation of UVAs and IAs in fish depends on their feeding behavior.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Biochemistry & Molecular Biology
F. Gagne, C. Andre, S. Turgeon, N. Menard
Summary: This study aims to investigate the presence and potential toxic effects of polystyrene nanoparticles (NPs) in a feral Mya arenaria clam population near anthropogenic sources of pollution. The results show that clams collected from polluted sites contain polystyrene-like NPs ranging in size from 10 to 110 nm. These NPs are correlated with parameters such as alcohol/aldehyde dehydrogenase, indicating the presence of hydroxylated products. The contamination of clam populations by polystyrene-like NPs leads to decreased clam health status, including lower condition, growth rate, air survival time, and lactate dehydrogenase activity.
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY C-TOXICOLOGY & PHARMACOLOGY
(2023)
Article
Agronomy
Sophie Maccario, Marc Lucotte, Matthieu Moingt, Emile Samson-Brais, Elise Smedbol, Michel Labrecque
Summary: The use of glyphosate-based herbicides (GBHs) in industrial agriculture is causing a growing concern about the occurrence and spatial distribution of glyphosate and its principal metabolite, aminomethylphosphonic acid (AMPA), in the environment. A study conducted in Quebec, Canada found that 91% of soil samples contained detectable amounts of either glyphosate or AMPA, highlighting the potential spreading and persistence of these compounds in the environment. Glyphosate content was found to be significantly higher in clay soils rich in exchangeable cations.
Article
Environmental Sciences
David Levesque, Michel Lebeuf, Domynick Maltais, Caroline Anderson, Michel Starr
Summary: The role of organic matter inputs has been recognized as an important factor in understanding the issue of hypoxia, which is a worldwide expanding problem in estuaries and shelves due to eutrophication. This study investigated the transport and exchange of particulate and dissolved organic matter in the St. Lawrence Estuary, revealing the significance of organic matter in hypoxia.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Environmental Sciences
Guillaume Meyzonnat, Florent Barbecot, Jose Corcho Alvarado, Daniele Luigi Pinti, Jean-Marc Lauzon, Renald McCormack
Summary: The general and isotopic geochemistry of groundwater is essential for deciphering hydrogeological contexts and flow paths. This study used passive samplers to sequentially collect groundwater from long-screened wellbores, revealing how deep groundwater quality is impacted by human activities and indicating significant contributions of contemporary groundwater bodies in fractured aquifers.
Article
Marine & Freshwater Biology
Rozenn Le Net, Sylvain Larrat, Robert Michaud, Stephane Lair
Summary: A study was conducted on cutaneous anomalies in St. Lawrence Estuary belugas, proposing an atlas of 18 skin lesions categories. Some skin lesions were found to be of traumatic origin or associated with molting, with confirmation through histological evaluation and epidemiological analysis.
MARINE MAMMAL SCIENCE
(2022)
Article
Multidisciplinary Sciences
Catherine M. Couillard, Domynick Maltais, Renald Belley
Summary: The study investigated the stock-specific mass and length recovery rates of Canadian sea cucumber Cucumaria frondosa, revealing variations in dry product mass based on depth and season. The results showed that gutted mass was the most reliable metric for predicting processed body mass and estimating size.
Article
Geography, Physical
Meril Merindol, Guillaume St-Onge, Nabil Sultan, Patrick Lajeunesse, Sebastien Garziglia
Summary: The Charlevoix-Kamouraska/Bas-Saint-Laurent (CKBSL) seismic zone in eastern Canada has a seismic hazard similar to that of the active Pacific zone. A major earthquake in 1663 triggered numerous submarine landslides in the St. Lawrence Estuary, indicating a relationship between earthquakes and submarine slope failures. Analysis of sediment cores and dating techniques revealed four periods of synchronous submarine landslides corresponding to strong historical earthquakes, with the event in 1663 being the most significant in the region in the past two millennia.
QUATERNARY SCIENCE REVIEWS
(2022)
Article
Environmental Sciences
Nathalie R. Le Francois, Anne Tremblay-Gratton, Charles Drouin-Johnson, Jasmine Pregent, Marie-Pomme Presne-Poissant, Jean-Christophe Boussin, Florence Piche-Lebel, Isabelle Gendron-Lemieux
Summary: Successful bottom planting of indigenous macroalgae Saccharina latissima for coastal restoration purposes requires mass production of healthy sporophytes and optimal transfer techniques. Our study found that early growth of S. latissima was not significantly affected by different substrate types, gametophyte spraying methods, and water velocities. We suggest using an artificial substrate with binder-based gametophyte pulverization and a water velocity of 0.2 m s(-1) for standardized mass production. Further studies should focus on optimizing gametophyte concentration and including biomass determination for improved growth assessment.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Multidisciplinary Sciences
Vang Y. Nguyen, Shannon M. Bayse, Paul D. Winger, Harold DeLouche, George Legge
Summary: This study developed a semi-pelagic trawl to target redfish in the Gulf of St. Lawrence and minimize bycatch and seabed impacts. The new trawl utilized an innovative technique to keep the trawl off the seabed and match the movement of redfish. The results suggest that redfish can be commercially targeted with this trawl, and the catch of bycatch species may be reduced.
Article
Engineering, Civil
Shadi Hatami, Ali Nazemi
Summary: Climate change has significant impacts on landscape freeze-thaw patterns, with temperature alterations showing strong dependencies on these characteristics across different regions and timeframes. The use of copulas as effective tools to capture these dependencies and reconstruct marginal freeze-thaw characteristics is highlighted in this study. This research provides evidence for the complex responses of landscape freeze-thaw to climate change.
JOURNAL OF HYDROLOGY
(2021)
Article
Ecology
Anne-Sophie Fabris, Pierre Larouche, Jean-Carlos Montero-Serrano
Summary: This study characterized the particle size distribution of suspended particulate matter in the St. Lawrence Estuary, revealing significant variations between different seasons and regions. Coarse particles were found to play a key role in sedimentation in the Lower Estuary, with higher particle density during ice-covered conditions. The mineralogical and elemental composition of suspended detrital particles showed similarity throughout the estuary, indicating common sources.
REGIONAL STUDIES IN MARINE SCIENCE
(2021)
Article
Engineering, Marine
Pascal Bernatchez, Genevieve Boucher-Brossard, Maude Corriveau, Charles Caulet, Robert L. Barnett
Summary: This study examined the erosion of an unconsolidated fine-sediment cliff along the north shore of the Gulf of St. Lawrence in Quebec, Canada. It found an acceleration in retreat rates over the past 70 years, with seasonal and cryogenic processes as the main drivers of erosion. The hydroclimatic conditions and lithostratigraphy of the cliff also play a role in influencing erosion rates.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Multidisciplinary Sciences
Dominic Lagrois, Clement Chion, Jean-Francois Senecal, Camille Kowalski, Robert Michaud, Valeria Vergara
Summary: Exposure to anthropogenic noise from the commercial fleet is a significant factor affecting the aquatic environment. This study focuses on ferry ships and finds that the noise level is higher during low-speed acceleration/deceleration compared to operational speed. It suggests that taking measures such as avoiding sudden speed changes near whales could greatly reduce noise pollution.
SCIENTIFIC REPORTS
(2022)
Article
Marine & Freshwater Biology
Laure Tall, Alain Armellin, Bernadette Pinel-Alloul, Ginette Methot, Christiane Hudon
Article
Marine & Freshwater Biology
David Levesque, Antonella Cattaneo, Christiane Hudon
Article
Environmental Sciences
Philippe Massicotte, Andrea Bertolo, Philippe Brodeur, Christiane Hudon, Marc Mingelbier, Pierre Magnan
JOURNAL OF GREAT LAKES RESEARCH
(2015)
Article
Ecology
David Levesque, Christiane Hudon, Jean-Pierre Amyot, Antonella Cattaneo
FRESHWATER SCIENCE
(2015)
Article
Limnology
Anna Visconti, Antonella Cattaneo, Pierre Gagnon, Christiane Hudon
Article
Ecology
David Levesque, Christiane Hudon, Jean-Pierre Amyot, Antonella Cattaneo
FRESHWATER SCIENCE
(2015)
Article
Environmental Sciences
David Levesque, Christiane Hudon, Patrick M. A. James, Pierre Legendre
Article
Limnology
Amelie Genovese, Christiane Hudon, Andre L. Martel, Antonella Cattaneo
FUNDAMENTAL AND APPLIED LIMNOLOGY
(2016)
Article
Marine & Freshwater Biology
C. Hudon, P. Gagnon, S. Poirier Larabie, C. Gagnon, A. Lajeunesse, M. Lachapelle, M. A. Quilliam
Article
Environmental Sciences
D. Levesque, A. Cattaneo, G. Deschamps, C. Hudon
SCIENCE OF THE TOTAL ENVIRONMENT
(2017)
Article
Environmental Sciences
C. Hudon, M. Jean, G. Letourneau
SCIENCE OF THE TOTAL ENVIRONMENT
(2018)
Review
Engineering, Environmental
David J. Marcogliese, Christian Blaise, Daniel Cyr, Yves de Lafontaine, Michel Fournier, Francois Gagne, Christian Gagnon, Christiane Hudon
Article
Ecology
Luc Farly, Christiane Hudon, Antonia Cattaneo, Gilbert Cabana
Article
Environmental Sciences
Christiane Hudon, Pierre Gagnon, Myriam Rondeau, Serge Hebert, Denis Gilbert, Brad Hill, Michel Patoine, Michel Starr
Article
Fisheries
Y. Remmal, C. Hudon, P. B. Hamilton, M. Rondeau, P. Gagnon
CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
(2017)