Article
Ecology
Alexey Udalov, Margarita Chikina, Alexandra Chava, Andrey Vedenin, Sergey Shchuka, Vadim Mokievsky
Summary: Despite numerous studies, a detailed overall picture of benthic communities zonation in Arctic fjords is currently lacking. Our study in the Novaya Zemlya Archipelago, Kara Sea found consistent changes in benthic communities along the bay axis and a pattern of decreasing biodiversity and quantitative characteristics along environmental gradients. The distribution of communities corresponds to five zones, providing a reference point for monitoring changes in response to climate change and human activities.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2021)
Article
Oceanography
J. M. A. van der Grient, A. D. Rogers
Summary: The study analyzed the community structure of deep-sea polychaetes in the northwest Atlantic, revealing three major groups with differences that can be explained by environmental gradients and long-term variables. It was found that energetics and habitat structure were significant factors influencing polychaete communities, while historical fishing intensity had a weaker effect. The impact of long-term environmental factors suggests that the deep sea is vulnerable to climate change and should be considered in future ecosystem management.
DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
(2021)
Article
Environmental Sciences
B. Rogalla, S. E. Allen, M. Colombo, P. G. Myers, K. J. Orians
Summary: Climate change is causing rising temperatures and an acceleration of the hydrological cycle, leading to increased river discharge and resulting in permafrost thaw, glacial melt, and a shift to a groundwater-dominated system in the Arctic. These changes impact the distribution of nutrients and biogeochemical constituents in the coastal regions of the Arctic Ocean. This study investigates the effects of terrestrial runoff on marine biogeochemistry in the Canadian Arctic Archipelago, using ocean modeling experiments to explore the transport and modification of waters from the Arctic Ocean to the North Atlantic. The findings highlight the influence of continental and glacial runoff on the geochemical composition of the marine environment, and the potential impacts on the marine ecosystem.
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2023)
Article
Environmental Sciences
Jesica Goldsmit, Robert W. Schlegel, Karen Filbee-Dexter, Kathleen A. MacGregor, Ladd E. Johnson, Christopher J. Mundy, Amanda M. Savoie, Christopher W. McKindsey, Kimberly L. Howland, Philippe Archambault
Summary: Climate change is impacting marine ecosystems, potentially expanding the distribution of Arctic kelps while also subject to the influence of future greenhouse gas emissions.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Geography, Physical
T. Fletcher, C. Eble, J. S. Sinninghe Damste, K. J. Brown, N. Rybczynski, J. Gosse, Z. Liu, A. Ballantyne
Summary: Research indicates that Arctic warming may lead to northward migration, changes in fire frequency, intensity, size, and season. During the Pliocene Epoch, there were boreal forests in the Canadian Arctic Archipelago, with frequent wildfires in warm and wet climates.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Article
Environmental Sciences
Laura Kauppi, Norman Gobeler, Joanna Norkko, Alf Norkko, Alicia Romero-Ramirez, Guillaume Bernard
Summary: The increasing frequency and intensity of marine heatwaves (MHWs) have significant effects on the structure and functioning of ecological communities. This study found that short-term, strong MHWs can alter bioturbation and biogeochemical cycling of nutrients, leading to enhanced organic matter degradation, increased solute exchange, and sediment oxygen consumption. These changes highlight the system-wide impacts of even shorter-term, strong MHWs on ecosystem functioning.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Environmental Sciences
Maya P. Bhatia, Stephanie Waterman, David O. Burgess, Patrick L. Williams, Randelle M. Bundy, Travis Mellett, Megan Roberts, Erin M. Bertrand
Summary: The Canadian Arctic Archipelago is vulnerable to climate warming, with its glaciers impacting nutrient delivery to surface waters through upwelling and direct discharge. The strength of upwelling and nutrient delivery scales with subglacial meltwater discharge, with potential consequences for local productivity and regional micronutrient cycling. As glaciers retreat, the impacts on marine ecosystems are likely to be amplified initially but eventually muted as the ice masses diminish.
GLOBAL BIOGEOCHEMICAL CYCLES
(2021)
Article
Environmental Sciences
Angel Chen, Trevor C. Lantz, Txomin Hermosilla, Michael A. Wulder
Summary: Rapid climate warming is considered as the main driver of increased productivity in Arctic tundra vegetation. However, regional and landscape-scale heterogeneity suggests that additional controls are mediating the response of tundra vegetation to warming. The study highlights the importance of considering microclimate, topography, soil moisture, and physiological differences among plant functional groups in understanding spatial variation in tundra vegetation change.
REMOTE SENSING OF ENVIRONMENT
(2021)
Article
Environmental Sciences
William D. Halliday, David Barclay, Amanda N. Barkley, Emmanuelle Cook, Jackie Dawson, R. Casey Hilliard, Nigel E. Hussey, Joshua M. Jones, Francis Juanes, Marianne Marcoux, Andrea Niemi, Shannon Nudds, Matthew K. Pine, Clark Richards, Kevin Scharffenberg, Kristin Westdal, Stephen J. Insley
Summary: Climate change has reduced summer sea ice in the Arctic, allowing for increased underwater noise. Sound pressure levels increase with wind speed, decrease with ice concentration and air temperature, and also increase with the number of ships per day.
MARINE POLLUTION BULLETIN
(2021)
Article
Geosciences, Multidisciplinary
Marcus Lofverstrom, Diane M. Thompson, Bette L. Otto-Bliesner, Esther C. Brady
Summary: This study uses a coupled Earth-system-ice-sheet model to show that ice forming in North America may help facilitate glacial expansion in Scandinavia. When large coherent ice masses form and fill the ocean gateways in the Canadian Archipelago, the transport of North Pacific and Arctic water through the archipelago is diverted east of Greenland, resulting in a freshening of North Atlantic deep convection regions, sea-ice expansion, and significant cooling that triggers glacial inception in Scandinavia.
Article
Acoustics
Emmanuelle D. Cook, David R. Barclay, Clark G. Richards
Summary: The main sources of noise in the Arctic Ocean are naturally occurring, and sustained acoustic monitoring at high latitudes provides quantitative measures of changes in the sound field. The study presents a 12-month time series of ambient sound levels recorded near Gascoyne Inlet, Nunavut, showing a dependence on seasonal ice variations and higher frequencies varying more strongly. The analysis suggests that tidal-driven surface currents and ice block collisions contribute to the periodic trend in noise power.
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2022)
Article
Geosciences, Multidisciplinary
Ionut Cristi Nicu, Hakan Tanyas, Lena Rubensdotter, Luigi Lombardo
Summary: This study presents the first inventory of thermo-erosion gullies in the Svalbard region and investigates their potential threats to Arctic cultural heritage. The analysis of these gullies is increasingly important for Arctic administrations as they require more detailed hazard assessments due to the evident impact of climate change.
Article
Geosciences, Multidisciplinary
J. M. Jackson, K. Holmes, J. M. Klymak, L. Bianucci, W. Evans, W. C. Floyd, C. G. Hannah, A. Hare, D. Wan
Summary: Using observational data and a 2-D model, this study demonstrates the impact of an Arctic outflow event in February 2019 on water temperature and oxygen levels in Bute Inlet, British Columbia. The findings suggest that this local mechanism might counteract the effects of climate change and create a refuge for marine life. Moreover, the frequency of outflow events has shown a recent increase.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Oceanography
S. E. L. Howell, D. G. Babb, J. C. Landy, G. W. K. Moore, B. Montpetit, M. Brady
Summary: This study compares and analyzes the sea ice area and volume fluxes of Nares Strait and the Canadian Arctic Archipelago. The results show that Nares Strait has the largest ice flux, followed by the Queen Elizabeth Islands and M'Clure Strait. The majority of ice export comes from Nares Strait, with the highest fluxes observed in 2017-2019 and 2021, but remarkably exceeded by the Queen Elizabeth Islands in 2020. It is predicted that under continued warming, the ice export from Nares Strait and the Queen Elizabeth Islands will increase.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2023)
Article
Environmental Sciences
John Chetelat, Yueting Shao, Murray C. Richardson, Gwyneth A. MacMillan, Marc Amyot, Paul E. Drevnick, Hardeep Gill, Guenter Kock, Derek C. G. Muir
Summary: The study investigated the influence of diet, age, and growth rate on fish mercury concentrations in the Arctic char and brook trout, finding that age and diet were the main explanatory variables for muscle mercury concentrations in both species. Contrary to the hypothesis, faster-growing fish did not necessarily have lower mercury concentrations, and the effects of diet and age on mercury concentration were more significant than potential offsets by biomass dilution in faster-growing fish.
ENVIRONMENTAL POLLUTION
(2021)
Review
Limnology
Charlotte Carrier-Belleau, Ludovic Pascal, Christian Nozais, Philippe Archambault
Summary: This review examines the historical and current perspective of tipping point studies in terrestrial, freshwater, and marine ecological systems, highlighting the need to consider multiple drivers in different ecosystems. Experimental studies have focused on identifying tipping points at various levels of biological complexity, but there is still a lack of specific objectives in pinpointing these critical thresholds and considering the impact of multiple stressors on ecosystem dynamics.
LIMNOLOGY AND OCEANOGRAPHY
(2022)
Article
Ecology
Gustavo Yunda-Guarin, Loic N. Michel, Christian Nozais, Philippe Archambault
Summary: Understanding the mechanisms behind feeding interactions and species cooccurrence is crucial for predicting population dynamics in rapidly changing environments. This study used stable isotopes and the Bayesian ellipses approach to explore spatial trends in isotopic niche width and overlap of three arctic brittle stars. The results showed that these coexisting ophiuroids exhibited great interspecific plasticity in foraging behaviors and individual dietary flexibility. Differences in surface carbon composition influenced resource utilization, trophic interactions, and niche breadth of the ophiuroids. The study also found that niche overlap was greater in highly productive regions, while niche segregation increased in areas with greater sea-ice concentration. This study highlights the adaptability of ophiuroids to ecological and environmental gradients.
MARINE ECOLOGY PROGRESS SERIES
(2022)
Article
Biodiversity Conservation
Bruno L. Gianasi, Jesica Goldsmit, Philippe Archambault, Christopher W. McKindsey, Oleksandr Holovachov, Kimberly L. Howland
Summary: Free-living marine nematodes in Arctic coastal waters were surveyed, revealing low diversity and varying composition among different ports and zones. The study also found a negative correlation between nematode abundance and sea ice duration in subtidal zones. This research provides baseline information for monitoring and taxonomic inventories in high latitude coastal areas.
Article
Ecology
Thibault Androuin, Pierrick Barbier, Martin Foret, Tarik Meziane, Mathilde Thomas, Philippe Archambault, Gesche Winkler, Rejean Tremblay, Frederic Olivier
Summary: The study investigated the triggers driving bivalve larvae settlement in an intertidal coarse sand habitat, finding that the early recruitment rate of bivalve families is influenced by specific trophic settlement triggers.
Article
Fisheries
Marie-France Lavoie, Emilie Simard, Annick Drouin, Philippe Archambault, Luc A. Comeau, Christopher W. McKindsey
Summary: This study used acoustic telemetry to evaluate the influence of longline mussel farms on lobster movement behavior. The results showed that the time lobsters spent within a site, distance travelled, and walking speed did not differ between the farm and reference sites. The tagging method had an impact on walking speed during the first 24 hours, but did not affect the residence time and the distance travelled by the lobsters.
AQUACULTURE ENVIRONMENT INTERACTIONS
(2022)
Article
Environmental Sciences
Matthieu Huot, Fraser Dalgleish, Eric Rehm, Michel Piche, Philippe Archambault
Summary: The advancement of innovative underwater remote sensing detection and imaging methods can provide novel solutions for studying underwater coastal environments. By developing a multispectral laser serial imager that uses lasers of different wavelengths, large-scale algae and coral can be surveyed and classified.
Article
Environmental Sciences
Philippe-Olivier Dumais, Cindy Grant, Bodil A. Bluhm, Laure De Montety, Lisa Treau de Coeli, Jean-Eric Tremblay, Philippe Archambault
Summary: This study evaluated benthic community composition in the Canadian Arctic Archipelago and developed spatial predictive explanatory models. The results showed a succession in benthic communities and their distribution was influenced by Pacific origin water and terrigenous inputs.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Bruno L. Gianasi, Christopher W. McKindsey, Philippe Archambault, Nathalie Simard, Kimberly L. Howland
Summary: Arctic ecosystems are undergoing rapid changes, and this study focuses on evaluating the diversity and composition of benthic macrofauna in five Eastern Arctic locations. The findings demonstrate significant variations in assemblage composition and diversity among locations, with Churchill showing the lowest diversity metrics. Additionally, factors other than location, such as habitat type, were found to influence assemblage composition.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Lisa Robichaud, Philippe Archambault, Gaston Desrosiers, Christopher W. McKindsey
Summary: Studies have shown that mussel aquaculture increases the productivity of benthic macroinvertebrates, especially those associated with mussel socks. The presence of the invasive ascidian Styela clava can further enhance this effect by increasing the biogenic structure of the mussel socks.
Article
Limnology
Charlotte Carrier-Belleau, Ludovic Pascal, Scott D. Tiegs, Christian Nozais, Philippe Archambault
Summary: Environmental stressors have significant effects on species, communities, and ecosystems by altering fundamental processes. There is a need for more research on the interactions between pulse stressors and press stressors, as interactions between the two may lead to abrupt changes in biological responses.
LIMNOLOGY AND OCEANOGRAPHY
(2023)
Article
Multidisciplinary Sciences
Remi Amiraux, David J. Yurkowski, Philippe Archambault, Marie Pierrejean, C. J. Mundy
Summary: The traditional view that the benthic compartment is simpler in structure compared to the pelagic compartment is challenged in this study, which illustrates the presence of a subweb in the benthic realm with similar complexity to the pelagic counterpart, including megafaunal-predatory sea stars equivalent to iconic polar bears.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Biodiversity Conservation
Ludovic Pascal, Joannie Cool, Philippe Archambault, Piero Calosi, Andre L. R. Cuenca, Alfonso O. Mucci, Gwenaelle Chaillou
Summary: The declining O-2 concentrations in the global ocean have led to changes in benthic communities and sediment biogeochemistry. The authors found that below an O-2 threshold of approximately 63 mu M, there were significant shifts in macrobenthic community assemblages and bioturbation rates decreased. This study highlights the importance of bioturbating species in mitigating the biogeochemical consequences of hypoxia and provides insights for predicting future changes in benthic ecosystems.
GLOBAL CHANGE BIOLOGY
(2023)
Article
Multidisciplinary Sciences
Charlotte Carrier-Belleau, Ludovic Pascal, Scott D. Tiegs, Christian Nozais, Philippe Archambault
Summary: Anthropogenic impacts and global changes have profound implications for natural ecosystems, potentially leading to modification, degradation, or collapse. Multiple interacting stressors can create non-linear responses and generate thresholds at lower levels of an environmental gradient.
SCIENTIFIC REPORTS
(2023)
Article
Geosciences, Multidisciplinary
Flavienne Bruyant, Remi Amiraux, Marie-Pier Amyot, Philippe Archambault, Lise Artigue, Lucas Barbedo de Freitas, Guislain Becu, Simon Belanger, Pascaline Bourgain, Annick Bricaud, Etienne Brouard, Camille Brunet, Tonya Burgers, Danielle Caleb, Katrine Chalut, Herve Claustre, Veronique Cornet-Barthaux, Pierre Coupel, Marine Cusa, Fanny Cusset, Laeticia Dadaglio, Marty Davelaar, Gabriele Deslongchamps, Celine Dimier, Julie Dinasquet, Dany Dumont, Brent Else, Igor Eulaers, Joannie Ferland, Gabrielle Filteau, Marie-Helene Forget, Jerome Fort, Louis Fortier, Marti Gali, Morgane Gallinari, Svend-Erik Garbus, Nicole Garcia, Catherine Gerikas Ribeiro, Colline Gombault, Priscilla Gourvil, Clemence Goyens, Cindy Grant, Pierre-Luc Grondin, Pascal Guillot, Sandrine Hillion, Rachel Hussherr, Fabien Joux, Hannah Joy-Warren, Gabriel Joyal, David Kieber, Augustin Lafond, Jose Lagunas, Patrick Lajeunesse, Catherine Lalande, Jade Lariviere, Florence Le Gall, Karine Leblanc, Mathieu Leblanc, Justine Legras, Keith Levesque, Kate-M. Lewis, Edouard Leymarie, Aude Leynaert, Thomas Linkowski, Martine Lizotte, Adriana Lopes dos Santos, Claudie Marec, Dominique Marie, Guillaume Masse, Philippe Massicotte, Atsushi Matsuoka, Lisa A. Miller, Sharif Mirshak, Nathalie Morata, Brivaela Moriceau, Philippe-Israel Morin, Simon Morisset, Anders Mosbech, Alfonso Mucci, Gabrielle Nadai, Christian Nozais, Ingrid Obernosterer, Thimote Paire, Christos Panagiotopoulos, Marie Parenteau, Noemie Pelletier, Marc Picheral, Bernard Queguiner, Patrick Raimbault, Josephine Ras, Eric Rehm, Llucia Ribot Lacosta, Jean-Francois Rontani, Blanche Saint-Beat, Julie Sansoulet, Noe Sardet, Catherine Schmechtig, Antoine Sciandra, Richard Sempere, Caroline Sevigny, Jordan Toullec, Margot Tragin, Jean-Eric Tremblay, Annie-Pier Trottier, Daniel Vaulot, Anda Vladoiu, Lei Xue, Gustavo Yunda-Guarin, Marcel Babin
Summary: The Green Edge project investigates the phytoplankton spring bloom in the Arctic Ocean and its response to environmental changes. It is a multidisciplinary collaborative project involving researchers and technicians from seven countries. The project utilizes various sampling strategies and measurement techniques to understand the changes in Arctic Ocean biology and their impacts on the future.
EARTH SYSTEM SCIENCE DATA
(2022)
Article
Environmental Sciences
Filippo Ferrario, Carlos A. S. Araujo, Simon Belanger, Daniel Bourgault, Julie Carriere, Charlotte Carrier-Belleau, Elliot Dreujou, Ladd Erik Johnson, S. Kim Juniper, Raphael Mabit, Christopher W. McKindsey, Lindsey Ogston, Manon M. M. Picard, Richard Saint-Louis, Emilie Saulnier-Talbot, Jean-Luc Shaw, Nadine Templeman, Thomas W. Therriault, Jean-Eric Tremblay, Philippe Archambault
Summary: Ports play a central role in society, but they also pose potential environmental risks and stressors. Port managers face challenges in mitigating these risks and impacts on ecosystems and human health. The development of comprehensive environmental monitoring approaches integrated into wider ecosystems can help achieve sustainable development.
ELEMENTA-SCIENCE OF THE ANTHROPOCENE
(2022)