Selected results and publications
The Sentinel North teams are joining forces to generate knowledge and technological advances that lead to a better understanding of the changing northern environment, and its impact on human health. Below are a few selected impact research results that have been released as scientific articles, publications or presentations.
To consult the full list of publications from Sentinel North teams, click here.
INFOGRAPHIC: HUMAN HEALTH – ENVIRONMENT INTERACTIONS IN THE NORTH
Early results from Sentinel North are shedding light on the complex interactions between human health and the environment in the North through convergence research and the development of new approaches and innovative technologies.
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Efficiency of sympagic-benthic coupling revealed by analyses of n-3 fatty acids, IP25 and other highly branched isoprenoids in two filter-feeding Arctic benthic molluscs: Mya truncata and Serripes groenlandicus
- Based on lipid analyses in filter-feeding benthic molluscs, Amiraux et al. were able to demonstrate the effectiveness of pelagic-benthic coupling in the Arctic as well as the importance of sympagic production in the supply of essential fatty acids to benthic organisms.
- In Optics Express, Côté et al. present a deep learning framework to generate high-quality lens design starting points. The framework is readily accessible through a web application.
- In Limnology & Oceanography, Vilgrain et al. used images from an underwater imaging system deployed under the ice and showed how copepod morphology (size, color) and posture (activity, rest) vary with sea ice dynamics and spring phytoplankton growth.
- Using several trophic markers, Yunda-Guarin et al. highlight the importance of sea ice algae as a primary food source for deep benthic consumers at different trophic levels in Baffin Bay in the Canadian Arctic Ocean.
- Published in Optics Express, this article by Boilard et al. present the fabrication and characterization of an innovative fiber optic-based curvature sensor with increased sensitivity and flexible design that can be used in a wide range of applications.
- In Frontiers in Environmental Science, V. Marmillot et al. evaluate variations in phytoplankton lipid synthesis in different regions of the Canadian Arctic. The authors highlight the primordial role of taxonomic composition, the environment and the formation of sub-surface maximum chlorophyll for the production of essential fatty acids that will be transferred throughout the food chains.
- In the Perspectives column of Science, Warwick Vincent and Derek Mueller review studies carried out over two decades highlighting the impacts of the gradual disappearance of glacial habitats in the High Arctic.
- In this study, Amiraux et al. showed that the bacteria present in the ice pack undergo different stresses when the ice melts. These stresses lead to a reduction in bacterial activity associated with an increase in mortality (up to 75% of dead bacteria).
- In this study in mice, Choi et al. prove the concept that the intestinal microbiota can be used to decrease the levels of circulating pollutants in the context of obesity. By targeting the intestinal microbiota with a prebiotic, the metabolic health of the animals was further improved and the relative amount of pollutants decreased.
- Girard et al. identify 351 viral populations in a thermokarst pool, many of which are new phages and prophages. Through their work, they reveal increased diversity in summer and unexpected similarity with other viral populations from remote swampy lakes.
- Élyse Caron-Beaudoin, Pierre Ayotte, Caty Blanchette, Gina Muckle, Ellen Avard, Sylvie Ricard and Mélanie Lemire reveal that certain perfluoroalkylated acids have been detected in increasing numbers among pregnant Inuit women, leading to numerous adverse effects on their health.
- Through the design of a sensor capable of studying cardiometabolic and mental health in relation with the gut microbiota, researchers Jérôme Lapointe, Jean-Philippe Bérubé, Samuel Pouliot and Réal Vallée have succeeded in solving problems limiting ultrafast laser inscription in the silica glass that makes up optical fibers. The method is published in OSA Continuum.
- In this paper, Croteau et al. demonstrate that diatom microalgae (main primary producers in the Arctic) respond differently to light variations and transitions to darkness depending on their living environment.
- Achim Randelhoff's work shows that phytoplankton continues to grow even during winter in the Arctic, despite the almost total absence of light. This discovery opens up new avenues for the study of the marine food chain, and was published in Science Advances.
- In this study published in Limnology and Oceanography, Warwick Vincent's team presents the first continuous measurements of limnological conditions in Canada's northernmost lake. This lake is one of the last in the High Arctic to lose its perennial ice cover, resulting in significant ecological disturbance and interannual variability.
- In Architectural Science Review, Philippe Lalande, Claude M. H. Demers, Jean-François Lalonde and Marc Hébert present a photographic and photometric capture tool capable of generating visual representations that bring to the forefront the photobiological aspect of light. This parameter is of prime importance in the design of buildings in northern environments.
- In The International Journal of Obesity, Béatrice S.-Y. Choi, Laurence Daoust, Geneviève Pilon, André Marette and Angelo Tremblay observe that intervening at the microbiota level can have benefits on three conditions related to obesity : mood disorders, eating behaviors, and body detoxification of persistent organic pollutants (POPs).
- In Geophysical Research Letters, N.-L. Young, J.‐M. Lemieux, H. Delottier, R. Fortier and P. Fortier examine how different types of vegetation affect groundwater recharge in the Arctic.
- By joining forces in ecology, population health, and infectiology, teams from three Sentinel North Research Chairs led by Professors Pierre Legagneux, Mélanie Lemire and Gary Wong are demonstrating that snow geese are not carriers of the virus responsible for COVID-19. In doing so, they are responding to the concerns of their indigenous partners, for whom this species contributes significantly to food security.
- In American Society for Microbiology, Myriam Labbé, Catherine Girard, Warwick F. Vincent and Alexander Culley highlight distinct and divergent virus populations in the northernmost lakes of the world.
- In Light: Science & Applications, Jérôme Lapointe, Jean-Philippe Bérubé, Yannick Ledemi, Albert Dupont, Vincent Fortin, Younès Messaddeq and Réal Vallée of the COPL demonstrate a new physical phenomenon of light.
- In Nature Communications, Marcel Babin, Philippe Massicotte, Achim Randelhoff and their colleagues highlight some indicators of the "atlantification" of the Arctic Ocean (surface velocity of North Atlantic currents, and spatial distribution of the algae EHUX), which may lead to potential alterations in the Arctic marine food chain and biogeochemical cycles.
- New data on the genetic diversity of northern Arctic charr populations could help local and regional decision-makers in fisheries management and Arctic charr conservation, reveals the article by Xavier Dallaire, Éric Normandeau, Julien Mainguy, Jean-Éric Tremblay, Louis Bernatchez and Jean-Sébastien Moore in bioRxiv.
- In Frontiers in Marine Science, Achim Randelhoff, Johanna Holding, Markus Janout, Mikael Kristian Sejr, Marcel Babin, Jean-Éric Tremblay and Matthew B. Alkire present new observations on nitrate inventory and its quality as a reliable proxy of Arctic primary production.
- By combining biological observations and innovative numerical analysis methods, researcher Daniel Fortin and his collaborators have discovered a key determinant of the woodland caribou conservation. Read it in PLOSOne.
- A team led by André Marette has revealed in Nature Metabolism that a distinct bacterial signature is present in people with type-2 diabetes, an important breakthrough that will allow further research on this disease.