Article
Environmental Sciences
Kazuki Tachibana, Motohiro Shimanaga, Dewi Langlet, Koji Seike, Masayuki Miyazaki, Mitsuhiro Yoshida, Takuro Nunoura, Hidetaka Nomaki
Summary: This study examined the metazoan meiofauna in the Bering Sea, identifying its association with sediment environmental factors and its potential importance in ecosystem functioning and biogeochemical cycles.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Environmental Sciences
Lucy S. Vlietstra, Kayla R. Hinrichs, E. Rachel Bernstein, Alexandra Darden, Matthew Martino
Summary: Surface temperatures in the Arctic Ocean have increased at a faster rate than the global average and resulted in decreased sea-ice coverage. However, the hazardous nature of sea-ice formation and drift still poses risks to ships in Arctic waters. This study examined the interannual variability of polar class ship accessibility in the northern Bering Sea and seas north of the Bering Strait from 2012 to 2022, identifying trends in ship accessibility and highlighting the areas with higher accessibility. The findings can assist ship operators and coastal states in planning safe routes and emergency services, as well as help match ship capabilities to mission requirements.
FRONTIERS IN MARINE SCIENCE
(2023)
Review
Oceanography
Mary Beth Decker, Richard D. Brodeur, Lorenzo Ciannelli, Lyle L. Britt, Nicholas A. Bond, Bartholomew P. DiFiore, George L. Hunt Jr
Summary: In the eastern Bering Sea, fluctuations in jellyfish biomass are influenced by climate conditions. A 30-year time series analysis reveals that jellyfish biomass changes coincide with climate transitions. Through the use of generalized additive models, physical variables and lag of jellyfish biomass accurately describe the observed fluctuations. More parsimonious models, excluding highly correlated terms, continue to explain a significant portion of jellyfish biomass variance.
PROGRESS IN OCEANOGRAPHY
(2023)
Article
Environmental Sciences
Haakon Hop, Anette Wold, Amelie Meyer, Allison Bailey, Maja Hatlebakk, Slawomir Kwasniewski, Peter Leopold, Piotr Kuklinski, Janne E. Soreide
Summary: The impact of the rapidly changing Arctic on zooplankton community structure and seasonal behavior is not yet understood. Zooplankton in the Arctic region is more dependent on surrounding water mass characteristics, such as salinity and depth, rather than geographical location. Seasonal changes in the community are closely linked to algal food availability and seasonal changes from winter to spring.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Oceanography
Simone De Villiers Louw, David Richard Walker, Sarah E. Fawcett
Summary: Microalgae and bacteria in Antarctic sea-ice play a crucial role in polar-ocean biogeochemistry. However, the dynamics of sea-ice algae in the marginal ice zone (MIZ) are poorly understood. A study in the Indian Southern Ocean in winter 2017 found an abundant, active algal community in the MIZ, which highlighted the ecological significance of this region in supporting overwintering sea-ice algae and bacteria.
DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
(2022)
Article
Environmental Sciences
Jian Zhao, Yan Wang, Wenjing Liu, Hongsheng Bi, Edward D. Cokelet, Calvin W. Mordy, Noah Lawrence-Slavas, Christian Meinig
Summary: The salinity variability in the Bering Sea is crucial for understanding oceanic processes such as sea ice melting, wind-driven currents, and river plumes. The Soil Moisture Active Passive (SMAP) satellite shows promising abilities in capturing the freshening signals during spring sea ice melting. The Yukon River plume plays a significant role in the salinity variability, and surface wind forcing is essential in shaping the seasonal cycle.
Article
Fisheries
Guillaume Feuilloley, Jean-Marc Fromentin, Claire Saraux, Jean-Olivier Irisson, Laetitia Jalabert, Lars Stemmann
Summary: The study found a high stability of zooplankton community over time in the Gulf of Lions, with no significant long-term trends in density, size, and taxonomic composition. Variations in zooplankton size and density were not correlated to environmental variables, suggesting the importance of biotic interactions.
ICES JOURNAL OF MARINE SCIENCE
(2022)
Article
Fisheries
A. P. Long, D. Haberlin, O. Lyashevska, D. Brophy, Brendan O' Hea, C. O'Donnell, R. G. Scarrott, C. Lawton, T. K. Doyle
Summary: This study estimated the interannual variability of abundance and diversity of gelatinous mesozooplankton in the Celtic Sea using data from seven fisheries surveys. The analysis revealed a lack of linear trend in gelatinous abundance over time, but significant interannual variations. Holoplanktonic taxa dominated the gelatinous community abundance and showed negative correlations with summer sea surface temperature and the Eastern Atlantic Pattern index. The data suggest that gelatinous mesozooplankton in the Celtic Sea may become less abundant with further ocean warming, emphasizing the importance of monitoring at a high taxonomic resolution.
ICES JOURNAL OF MARINE SCIENCE
(2021)
Article
Geosciences, Multidisciplinary
Jed E. Lenetsky, Mark C. Serreze
Summary: Utilizing statistically modeled ocean heat transports through the Bering Strait and other predictors, skillful predictions of sea ice retreat and advance dates in the Chukchi Sea have been successfully created. The models can explain a significant amount of variance in sea ice dates at one-month leads, but their accuracy decreases at longer leads, indicating some predictive value but with limitations.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Environmental Sciences
Yoshimi Kawai
Summary: The study analyzed 32 years of high-resolution atmospheric reanalysis data to determine the atmospheric responses to sea surface temperature (ST) fronts in the Bering Sea and Chukchi Sea. In the Chukchi Sea, the horizontal gradient and Laplacian of ST become noticeable in October and November, while an ST contrast develops in the winter in the Bering Sea. The study also demonstrated the pressure adjustment mechanism and confirmed the vertical mixing mechanism in both seas.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Oceanography
Hongjie Wang, Peigen Lin, Robert S. Pickart, Jessica N. Cross
Summary: By compiling CO2 measurements from 1989 to 2019, researchers found that the Bering and eastern Chukchi Sea shelves act as a CO2 sink except under certain conditions. The CO2 system in the area is mainly controlled by the biological pump, with wind-driven upwelling causing episodic outgassing. Temperature is the dominant driver of seasonal surface Delta fCO(2), and long-term patterns in Delta fCO(2) are influenced by temperature as well. Rapid warming in the northern Chukchi Sea has decreased the summer CO2 sink, while increasing primary productivity has increased it on the Bering Sea shelf.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Review
Engineering, Marine
Igor M. M. Belkin, Jeffrey W. W. Short
Summary: This article reviews the physical and biological manifestations of a large-scale water temperature anomaly called "The Blob" that emerged in the Northeast Pacific in late 2013. The Blob persisted through 2014-2016 and showed signs of reemergence in 2019. Advection by currents played a role in its movement across the Northeast Pacific. The Blob had significant impacts on the ecosystem of the Bering Sea, affecting primary production, zooplankton, invertebrates, fishes, seabirds, and marine mammals. Recovery of the Bering Sea ecosystem is uncertain, with possibilities of irreversible changes or hysteresis recovery.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Biology
Martin Edwards, Pierre Helaouet, Eric Goberville, Alistair Lindley, Geraint A. Tarling, Michael T. Burrows, Angus Atkinson
Summary: The study reveals a 50% decline in surface krill abundance in the North Atlantic over the past 60 years, with no associated range shift. While warmer isotherms are shifting northwards, cooler isotherms have remained relatively static, leading to a narrowing of the core temperature range for krill distribution. This habitat squeeze may explain the decline in krill population and highlights the complexities of species response to warming temperatures.
COMMUNICATIONS BIOLOGY
(2021)
Article
Meteorology & Atmospheric Sciences
Amelie Desmarais, L. Bruno Tremblay
Summary: The uncertainties in the timing of a seasonal ice cover in the Arctic Ocean depend on model physics, natural variability at decadal time scales, and uncertainties in climate scenarios and forcings. Results suggest that sea ice decadal variability is in agreement with observational records in the Pacific sector, underestimated in the Eurasian sector, and slightly overestimated in the Atlantic sector.
JOURNAL OF CLIMATE
(2021)
Article
Multidisciplinary Sciences
Catherine Lalande, Jacqueline M. Grebmeier, Andrew M. P. McDonnell, Russell R. Hopcroft, Stephanie O'Daly, Seth L. Danielson
Summary: Unusually warm conditions in the Pacific Arctic region led to a dramatic loss of sea ice cover and increased inflow of warm Pacific waters, impacting the sinking particles of phytoplankton and zooplankton communities. Spatial and temporal variations in living algal cells, chlorophyll a, total particulate matter, particulate organic carbon, zooplankton fecal pellets, and zooplankton and meroplankton fluxes were observed from 2017 to 2019, showing the effects of sea ice cover and water temperature on biological processes.