Review
Fisheries
Kenneth F. Drinkwater, Naomi Harada, Shigeto Nishino, Melissa Chierici, Seth L. Danielson, Randi B. Ingvaldsen, Trond Kristiansen, George L. Hunt, Franz Mueter, Jan Erik Stiansen, Emory Anderson
Summary: Recent studies have shown a significant decrease in sea-ice coverage at the two major inflow gateways to the Arctic under climate change. Projections indicate higher air and sea temperatures, resulting in less sea ice and increased precipitation in these regions. Other anticipated changes include lower water pH, decreased surface nutrient levels, and potential impacts on Arctic coastal communities.
ICES JOURNAL OF MARINE SCIENCE
(2021)
Article
Environmental Sciences
Sophie Clayton, Harriet Alexander, Jason R. Graff, Nicole J. Poulton, Luke R. Thompson, Heather Benway, Emmanuel Boss, Adam Martiny
Summary: Bio-GO-SHIP is a new ocean observing program that aims to expand our knowledge of the global ocean plankton ecosystem by leveraging new technologies and data sharing, addressing the under-sampling of ocean biology in time and space.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Oceanography
Matthew R. Baker, Alex De Robertis, Robert M. Levine, Daniel W. Cooper, Edward V. Farley
Summary: Sand lance are small forage fish playing a key role in pelagic ecosystems, recent studies in the Arctic have noted increased aggregations, indicating a potential expansion of boreal species into Arctic marine habitats.
DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
(2022)
Article
Oceanography
Kun Zhang, Haibin Song, Bernard Coakley, Shun Yang, Wenhao Fan
Summary: This paper presents the analysis and findings of the structure and evolution of eddies in the Chukchi Borderlands of the western Arctic Ocean using seismic oceanography and hydrographic data. The study reveals the characteristics and behavior of the eddies, providing valuable insights into mass and energy transport processes in the region.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Article
Environmental Sciences
Shizhu Wang, Qiang Wang, Muyin Wang, Gerrit Lohmann, Fangli Qiao
Summary: This study compares the representation of sea surface salinity and liquid freshwater content in Arctic Ocean simulations from CMIP5 and CMIP6 models. The results show no significant improvement in CMIP6 compared to CMIP5, with overestimation of liquid freshwater content being a common bias in CMIP6. The study also investigates projected changes in freshwater content and budget under different socioeconomic scenarios, showing a trend of increased freshwater sources and a shift from a freshwater sink to a source. The findings highlight the ongoing freshening trend in the Arctic Ocean with implications on its physical and biogeochemical environment.
Article
Geosciences, Multidisciplinary
Jeffrey R. Carpenter, Stephanie Waterman, Benjamin Scheifele
Summary: A unique temperature mixing mechanism is present in the low-energy mixing environment of the Arctic Ocean halocline. It enhances heat fluxes by forming small-scale intrusive features, resulting in the mixing of heat into cold halocline waters.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Environmental Sciences
Narges Khosravi, Qiang Wang, Nikolay Koldunov, Claudia Hinrichs, Tido Semmler, Sergey Danilov, Thomas Jung
Summary: This study examines the hydrography of the Arctic Ocean using 23 climate models and finds that there is no obvious improvement in representing the Arctic hydrography in CMIP6 compared to CMIP5. The climate change projections show that the sub-Arctic seas will experience significant warming, leading to a warming trend in the Arctic Atlantic Water layer. However, there are large uncertainties in the projected changes in salinity.
Article
Environmental Sciences
T. Matos, J. L. Rocha, C. L. Faria, M. S. Martins, Renato Henriques, L. M. Goncalves
Summary: The study introduces a novel automated optical instrument for continuous monitoring of sediment deposition and erosion in waterways without the need for calibration, aiming to evaluate sediment dynamics in coastal areas with wide spatial and temporal resolution.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Limnology
Camille de la Vega, Claire Mahaffey, Robyn E. Tuerena, David J. Yurkowski, Steven H. Ferguson, Garry B. Stenson, Erling S. Nordoy, Tore Haug, Martin Biuw, Sophie Smout, Jo Hopkins, Alessandro Tagliabue, Rachel M. Jeffreys
Summary: This study used stable nitrogen isotopes to investigate the trophic position of seals across large spatial scales in the Arctic, showing a direct link between δ N-15 of seal muscle amino acids and seawater nitrate. The variation in δ N-15 of seals reflects differences in δ N-15 end members in Pacific vs. Atlantic waters, providing a framework for assessing ecosystem changes at pan-Arctic scales.
LIMNOLOGY AND OCEANOGRAPHY LETTERS
(2021)
Article
Chemistry, Analytical
Camila M. Penso, Joao L. Rocha, Marcos S. Martins, Paulo J. Sousa, Vania C. Pinto, Graca Minas, Maria M. Silva, Luis M. Goncalves
Summary: This study presents a low-cost and highly sensitive dissolved oxygen optical sensor based on a PDMS membrane doped with PtOEP, offering excellent mechanical and chemical properties for long-term applications. By adjusting the PDMS film thickness and PtOEP concentration, low oxygen concentrations can be detected in gas and liquid media.
Article
Environmental Sciences
Xin Lu, Kang Yang, Mia M. Bennett, Chang Liu, Wei Mao, Ya Li, Wensong Zhang, Manchun Li
Summary: This study utilized new satellite imagery technology and digital elevation data to quantify the hydrography of small rivers in the Colville River Basin in Alaska, highlighting their dominant role in the overall river network.
ENVIRONMENTAL RESEARCH LETTERS
(2021)
Article
Environmental Sciences
Christina Bonsell, Kenneth H. Dunton
Summary: Our study in a shallow High Arctic kelp bed in the Beaufort Sea, Alaska, examined patterns of propagule recruitment to assess succession timescale and trajectory. We found that bottom waters remain frozen with low light levels for 8-9 months, while summer period is characterized by higher temperatures and measurable irradiance. Spatial differences in epilithic assemblages were observed, with a positive correlation between cover by crustose coralline algae and distance to river inputs.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Oceanography
John Malito, Emily Eidam, Jaap Nienhuis
Summary: This study investigates the morphologic response of the Alaskan Beaufort Shelf (ABS) to increasing wave energy and suggests that coastal changes in response to the growing Arctic wave climate may be dependent on shelf morphology and even mitigated in some regions by morphologic adjustment.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Article
Oceanography
Laramie T. Jensen, Jay T. Cullen, Sarah L. Jackson, Loes J. A. Gerringa, Dorothea Bauch, Rob Middag, Robert M. Sherrell, Jessica N. Fitzsimmons
Summary: Recent studies have revealed a unique linear relationship between dissolved copper (Cu) and nickel (Ni) in the Arctic Ocean, which differs from other oceans. This relationship is driven by river inputs and shows distinct distribution patterns in surface and deep waters. Cu and Ni mainly originate from rivers, but Ni is additionally influenced by biological processes and shelf sediment processes, while Cu is mostly affected by mixing.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Article
Oceanography
Shun Yang, Haibin Song, Bernard Coakley, Kun Zhang
Summary: In recent years, the Arctic Ocean has experienced a significant decrease in sea ice cover, leading to enhanced turbulent mixing and eddy activity. This study uses seismic reflection and current velocity data to identify mesoscale eddies in the ice-free Chukchi Borderlands of the western Arctic Ocean. The findings highlight the enhanced mixing at the edges of these eddies, which can increase the upward heat flux and potentially accelerate the melting of surface sea ice.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2023)
Article
Oceanography
Pernille Tonnesen, Shane Gero
Summary: Studying the behavior of deep-sea animals is challenging, but animal-borne camera tags may help understand predator-prey interactions. Research showed that camera-associated white light may affect foraging behavior, but has minimal long-term fitness impact on sperm whales. However, this impact should be considered and monitored for longer camera tag deployments.
DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
(2024)
Article
Oceanography
Sarah N. de Mendonca, Anna Metaxas
Summary: Ecological processes impact spatial patterns in abundance and distribution of megafauna. This study used spatial statistics to identify significant megafaunal patterns in the Laurentian Channel Marine Protected Area. The patterns varied among taxa and were related to geological factors. The study highlights the importance of considering fine-scale patterns and provides insights for ecological research, monitoring, and conservation in deep-sea ecosystems.
DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
(2024)