Article
Environmental Sciences
France Collard, Katrine Husum, Gauthier Eppe, Cedric Malherbe, Ingeborg G. Hallanger, Dmitry Divine, Geir W. Gabrielsen
Summary: Research on plastic pollution in the Arctic is limited, with this study focusing on microplastics and other anthropogenic particles like dyed fibers in sediments from Kongsfjorden. Analysis revealed the presence of various APs, including microplastics, with different sizes and distribution patterns. This data provides insight into the presence of plastic and other APs in a remote fjord in Svalbard.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Geosciences, Multidisciplinary
Krzysztof G. Rymer, Grzegorz Rachlewicz, Agata Buchwal, Arnaud J. A. M. Temme, Tony Reimann, W. Marijn van der Meij
Summary: This study investigates aeolian activity in the central Spitsbergen postglacial valleys and reveals the relationship between aeolian deposition rates and air temperature, suggesting the significance of source material delivered to the valley by fluvioglacial processes and the impact of rising temperatures on niveo-aeolian deposition.
Article
Multidisciplinary Sciences
Scott Zolkos, Alexander V. Zhulidov, Tatiana Yu. Gurtovaya, Vyacheslav V. Gordeev, Sergey Berdnikov, Nadezhda Pavlova, Evgenia A. Kalko, Yana A. Kuklina, Danil A. Zhulidov, Lyudmila S. Kosmenko, Alexander I. Shiklomanov, Anya Suslova, Benjamin M. Geyman, Colin P. Thackray, Elsie M. Sunderland, Suzanne E. Tank, James W. McClelland, Robert G. M. Spencer, David P. Krabbenhoft, Richard Robarts, Robert M. Holmes
Summary: High levels of methylmercury accumulation in marine biota in the Arctic are a concern. Recent research on Russian rivers shows a decline in particulate mercury concentrations and suspended solids, resulting in a significant reduction in mercury export to the Arctic Ocean.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Oceanography
Sheng Zeng, Binbin Deng, Jinlong Wang, Juan Du, Jinzhou Du
Summary: This study analyzed gamma-ray radionuclides in sediments of the Kongsfjorden in the Arctic and studied the factors affecting their distribution. The findings revealed a strong influence of organic matter on the distribution of Pb-210(ex), significant contribution of boundary scavenging to the sediment's Pb-210(ex) content, and the importance of grain size and Cs-137 activity in radionuclide distribution.
ACTA OCEANOLOGICA SINICA
(2022)
Article
Environmental Sciences
Wen Liang, Lihua Ran, Zhi Yang, Martin G. Wiesner, Yuzhao Liang, Lin Sun, Jianfang Chen
Summary: This study measured dissolved silicate concentrations in sediment trap sampling bottles from four stations in the South China Sea, revealing significant dissolution of particulate bSi and underestimation of bSi flux. It is important to pay attention to bSi dissolution in sampling bottles in low-productivity oligotrophic oceans and calibrate bSi flux via measurement of dissolved silicate.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Biodiversity Conservation
Katherina Schimani, Katharina Zacher, Kerstin Jerosch, Hendrik Pehlke, Christian Wiencke, Inka Bartsch
Summary: This study investigates the distribution and abundance of macroalgae in Kongsfjorden (Spitsbergen) and reveals different distribution patterns for red algae, brown algae, and green algae at different depths and locations along the fjord.
Article
Geology
Sten-Andreas Grundvag, William Helland-Hansen, Erik P. Johannessen, Joris Eggenhuisen, Florian Pohl, Yvonne Spychala
Summary: This study presents sedimentological evidence of sandy hyperpycnal flow deposits (hyperpycnites) in a series of basin floor lobe complexes associated with a progradational shelf margin in the Eocene of Spitsbergen, Arctic Norway. The abundance of thick-bedded massive sandstones, frequent bed amalgamation, and the distribution of hyperpycnites across the lobes suggest that hyperpycnal flow was the most important mechanism driving lobe progradation. These findings challenge the traditional beliefs about hyperpycnites preserving the waxing-waning signal of single-peaked floods.
Article
Oceanography
Jong-Ku Gal, Sun-Yong Ha, Jisoo Park, Kyung-Hoon Shin, Dongseon Kim, Nan-Young Kim, Sung-Ho Kang, Eun Jin Yang
Summary: Satellite observations and modeling data show an increase in net primary production in the Arctic Ocean due to retreating sea ice and warming, with under-ice blooms becoming more important. The role of sea-ice algae in these blooms is still unknown due to limited observations.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Article
Environmental Sciences
Haakon Hop, Anette Wold, Mikko Vihtakari, Philipp Assmy, Piotr Kuklinski, Slawomir Kwasniewski, Gary P. Griffith, Olga Pavlova, Pedro Duarte, Harald Steen
Summary: With climate warming, tidewater glaciers are retreating, leading to the discharge of fresh meltwater that mixes with deep marine water and forms visible plumes. These plumes can result in increased mortality for zooplankton due to osmotic shock, but they also attract surface-foraging seabirds by providing enhanced prey availability. Glacial plumes play an important role as climate refugia for foraging seabirds.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Limnology
Willem H. van de Poll, Douwe S. Maat, Philipp Fischer, Ronald J. W. Visser, Corina P. D. Brussaard, Anita G. J. Buma
Summary: Fjords on the west coast of Spitsbergen exhibit variable Arctic and Atlantic climate signals that impact phytoplankton productivity and composition throughout the seasons. Factors such as solar radiation, warming cycles, and freshwater discharge influence nutrient availability and light intensity, leading to specific phytoplankton dynamics in spring, summer, and fall. Despite inter-annual variability in ocean temperature and salinity, the seasonal phytoplankton taxonomic composition and chlorophyll a levels remain relatively stable.
LIMNOLOGY AND OCEANOGRAPHY
(2021)
Article
Biotechnology & Applied Microbiology
Shan Zhang, Hai-Yan Cao, Nan Zhang, Zhao-Jie Teng, Yang Yu, Zhi-Bin Wang, Peng Wang, Hui-Hui Fu, Xiu-Lan Chen, Yu-Zhong Zhang, Chun-Yang Li
Summary: This study screened DMSP-catabolizing bacteria from Arctic samples and found that bacteria of four genera (Psychrobacter, Pseudoalteromonas, Alteromonas, and Vibrio) could grow with DMSP as the sole carbon source, among which Psychrobacter and Pseudoalteromonas are predominant. The DMSP catabolic pathways of these strains were proposed based on genomic and biochemical analyses. Bioinformatic analysis indicated that most Psychrobacter and Vibrio bacteria have the potential to catabolize DMSP via the demethylation pathway.
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2022)
Article
Environmental Sciences
Jong-Ku Gal, Bo Kyung Kim, Hyoung Min Joo, Chorom Shim, Boyeon Lee, Il-Nam Kim, Jinyoung Jung, Kyung-Hoon Shin, Sun-Yong Ha
Summary: The study investigated the concentrations of n-alkanes and sterols in marine particulate matter in Kongsfjorden in early spring, revealing differences in environmental factors and phytoplankton cell density between the inner and outer fjord. Certain sterols showed correlations with chlorophyll a and POC concentrations, while short-chain alkanes were found to have significantly higher concentrations in the surface layer compared to the subsurface. The distribution of lipid biomarkers in the water column provides important information for understanding the origin and transport of organic matter in the Arctic fjord.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Maeve McGovern, Katrine Borga, Eldbjorg Heimstad, Anders Ruus, Guttorm Christensen, Anita Evenset
Summary: Decades of long-range transport from lower latitudes have led to the deposition and storage of persistent organic pollutants in Arctic regions. This study focuses on the concentrations and composition of legacy pollutants in rivers and coastal waters influenced by glaciers and permafrost. Results show that these small Arctic rivers play an important role in transporting contaminants to coastal areas, and the spring thaw is a significant source of pollution in Kongsfjorden.
ENVIRONMENTAL POLLUTION
(2022)
Article
Oceanography
Gabrielle Nadai, Eva-Maria Noethig, Louis Fortier, Catherine Lalande
Summary: This study investigated the impact of snow and sea ice cover on microalgal fluxes in the Beaufort Sea, finding that delayed sea ice breakup and early snowmelt in 2016 contributed to higher diatom fluxes, while delayed sea ice algae release led to lower diatom and PPC fluxes when snowmelt occurred late. The ongoing sea ice reduction due to global warming may increase PPC fluxes to the seafloor and carbon sequestration at depth in the Arctic Ocean.
PROGRESS IN OCEANOGRAPHY
(2021)
Article
Environmental Sciences
Wokil Bam, Kanchan Maiti, Mark Baskaran
Summary: The distribution and vertical fluxes of particulate organic carbon and other key elements in the Arctic Ocean are mainly influenced by primary productivity, ice cover, and lateral exchange. Seasonal vertical fluxes of particulate organic and inorganic carbon, nitrogen, and biogenic silica were studied using tracers in the western Arctic Basin in 2015. The results highlight the importance of POC and PN fluxes in seasonal vertical transport, with the highest fluxes observed in ice-covered stations in the northern region.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Geosciences, Multidisciplinary
Manuel Maldonado, Maria Lopez-Acosta, Celia Sitja, Marta Garcia-Puig, Cristina Galobart, Gemma Ercilla, Aude Leynaert
Article
Environmental Sciences
Augustin Lafond, Karine Leblanc, Bernard Queguiner, Brivaela Moriceau, Aude Leynaert, Veronique Cornet, Justine Legras, Josephine Ras, Marie Parenteau, Nicole Garcia, Marcel Babin, Jean-Eric Tremblay
ELEMENTA-SCIENCE OF THE ANTHROPOCENE
(2019)
Article
Environmental Sciences
Natalia Llopis Monferrer, Demetrio Boltovskoy, Paul Treguer, Miguel Mendez Sandin, Fabrice Not, Aude Leynaert
GLOBAL BIOGEOCHEMICAL CYCLES
(2020)
Article
Limnology
Emmanuel C. Laurenceau-Cornec, Frederic A. C. Le Moigne, Morgane Gallinari, Brivaela Moriceau, Jordan Toullec, Morten H. Iversen, Anja Engel, Christina L. De La Rocha
LIMNOLOGY AND OCEANOGRAPHY
(2020)
Article
Ecology
Claire Labry, Daniel Delmas, Brivaela Moriceau, Morgane Gallinari, Julien Quere, Agnes Youenou
MARINE ECOLOGY PROGRESS SERIES
(2020)
Article
Geochemistry & Geophysics
Christos Panagiotopoulos, Madeleine Goutx, Maxime Suroy, Brivaela Moriceau
ORGANIC GEOCHEMISTRY
(2020)
Article
Geochemistry & Geophysics
Remi Amiraux, Philippe Archambault, Brivaela Moriceau, Melanie Lemire, Marcel Babin, Laurent Memery, Guillaume Masse, Jean-Eric Tremblay
Summary: This study aimed to determine the impact of sympagic algal primary production on Arctic filter-feeding bivalves, finding seasonal variability and contrasts between two consecutive years in terms of lipid and primary production. The study highlighted the tightness of the Arctic sympagic-benthic coupling and emphasized the role of Greenland cockle as a sentinel species for assessing this coupling.
ORGANIC GEOCHEMISTRY
(2021)
Article
Limnology
Natalia Llopis Monferrer, Aude Leynaert, Paul Treguer, Andres Gutierrez-Rodriguez, Brivaela Moriceau, Morgane Gallinari, Mikel Latasa, Stephane L'Helguen, Jean-Francois Maguer, Karl Safi, Matthew H. Pinkerton, Fabrice Not
Summary: Our study reveals that Rhizaria exhibit a high degree of silicification in the silicic acid rich Southern Ocean, with higher biogenic silicon content compared to similar size specimens in other global oceans. Despite their importance in global silica production, Rhizaria have lower biogenic silicon production and abundance than diatoms in the Southern Ocean.
LIMNOLOGY AND OCEANOGRAPHY
(2021)
Article
Limnology
Julien Thebault, Aurelie Jolivet, Matthieu Waeles, Helene Tabouret, Sophie Sabarot, Christophe Pecheyran, Aude Leynaert, Klaus Peter Jochum, Bernd R. Schone, Lukas Frohlich, Valentin Siebert, Erwan Amice, Laurent Chauvaud
Summary: Human activities are increasingly impacting phytoplankton dynamics in coastal ecosystems globally, but there are major disparities among sites and through time. Studying chemical information archived in shells of Pecten maximus can provide insights into phytoplankton dynamics over larger scales.
LIMNOLOGY AND OCEANOGRAPHY
(2022)
Article
Green & Sustainable Science & Technology
Emma Michaud, Adelaide Aschenbroich, Olivier Gauthier, Francois Fromard, Josephine Y. Aller, Robert C. Aller, Guillaume Brunier, Edward J. Anthony, Antoine Gardel, Vincent Le Garrec, Aude Leynaert, Gerard Thouzeau
Summary: This study characterizes the impact of early mangrove development on benthic infaunal assemblages and suggests that spatial variables play a role in shaping benthic diversity patterns. Understanding mangrove dynamics at suitable spatial scales is crucial for mangrove management and restoration plans.
Article
Limnology
Maria Lopez-Acosta, Manuel Maldonado, Jacques Grall, Axel Ehrhold, Celia Sitja, Cristina Galobart, Fiz F. Perez, Aude Leynaert
Summary: In coastal systems, the contribution of diatoms to the silicon cycle is well-known, while the contribution of benthic silicifiers such as sponges has rarely been studied. This study quantified the silicon fluxes and stocks of sponge fauna in the Bay of Brest, France. The findings indicate that sponge silicon stocks are much larger than diatom stocks and have a slower turnover rate. However, it is unclear whether the silicon budget of the Bay is at steady state.
LIMNOLOGY AND OCEANOGRAPHY
(2022)
Article
Limnology
Lukas Froehlich, Valentin Siebert, Qian Huang, Julien Thebault, Brivaela Moriceau, Klaus Peter Jochum, Bernd R. Schoene
Summary: The study examines the relationship between trace element enrichments in scallop shells and phytoplankton dynamics. The findings suggest a dietary uptake of certain elements and reveal differences in peak heights between shells living in different environments.
LIMNOLOGY AND OCEANOGRAPHY
(2023)
Review
Ecology
Paul J. Treguer, Jill N. Sutton, Mark Brzezinski, Matthew A. Charette, Timothy Devries, Stephanie Dutkiewicz, Claudia Ehlert, Jon Hawkings, Aude Leynaert, Su Mei Liu, Natalia Llopis Monferrer, Maria Lopez-Acosta, Manuel Maldonado, Shaily Rahman, Lihua Ran, Olivier Rouxel
Summary: The element silicon is crucial for the growth of silicified organisms in marine ecosystems, connecting biogeochemical cycles of various elements. Recent studies have shown that the total silicon inputs and outputs in the ocean are significantly higher than previously estimated, leading to important modifications and updates in understanding the global silicon cycle.
Article
Geosciences, Multidisciplinary
Philippe Massicotte, Remi Amiraux, Marie-Pier Amyot, Philippe Archambault, Mathieu Ardyna, Laurent Arnaud, Lise Artigue, Cyril Aubry, Pierre Ayotte, Guislain Becu, Simon Belanger, Ronald Benner, Henry C. Bittig, Annick Bricaud, Eric Brossier, Flavienne Bruyant, Laurent Chauvaud, Debra Christiansen-Stowe, Herve Claustre, Veronique Cornet-Barthaux, Pierre Coupel, Christine Cox, Aurelie Delaforge, Thibaud Dezutter, Celine Dimier, Florent Domine, Francis Dufour, Christiane Dufresne, Dany Dumont, Jens Ehn, Brent Else, Joannie Ferland, Marie-Helene Forget, Louis Fortier, Marti Gali, Virginie Galindo, Morgane Gallinari, Nicole Garcia, Catherine Gerikas Ribeiro, Margaux Gourdal, Priscilla Gourvil, Clemence Goyens, Pierre-Luc Grondin, Pascal Guillot, Caroline Guilmette, Marie-Noelle Houssais, Fabien Joux, Leo Lacour, Thomas Lacour, Augustin Lafond, Jose Lagunas, Catherine Lalande, Julien Laliberte, Simon Lambert-Girard, Jade Lariviere, Johann Lavaud, Anita LeBaron, Karine Leblanc, Florence Le Gall, Justine Legras, Melanie Lemire, Maurice Levasseur, Edouard Leymarie, Aude Leynaert, Adriana Lopes dos Santos, Antonio Lourenco, David Mah, Claudie Marec, Dominique Marie, Nicolas Martin, Constance Marty, Sabine Marty, Guillaume Masse, Atsushi Matsuoka, Lisa Matthes, Brivaela Moriceau, Pierre-Emmanuel Muller, Christopher-John Mundy, Griet Neukermans, Laurent Oziel, Christos Panagiotopoulos, Jean-Jacques Pangrazi, Ghislain Picard, Marc Picheral, France Pinczon du Sel, Nicole Pogorzelec, Ian Probert, Bernard Queguiner, Patrick Raimbault, Josephine Ras, Eric Rehm, Erin Reimer, Jean-Francois Rontani, Soren Rysgaard, Blanche Saint-Beat, Makoto Sampei, Julie Sansoulet, Catherine Schmechtig, Sabine Schmidt, Richard Sempere, Caroline Sevigny, Yuan Shen, Margot Tragin, Jean-Eric Tremblay, Daniel Vaulot, Gauthier Verin, Frederic Vivier, Anda Vladoiu, Jeremy Whitehead, Marcel Babin
EARTH SYSTEM SCIENCE DATA
(2020)
