Fungi of the Barents sea

The role of marine mycobiota, which includes marine fungi and fungi-like, is, first of all, in the decomposition of detritus, as well as in the formation of symbiotic relationships with other hydrobionts, and most often it is parasitism or mutualism. The paper presents a generalization of data on the mycobiota of the Barents Sea, as the most studied of the Arctic seas. This allowed the authors to evaluate the role of this little-studied component of the ecosystem, as well as to determine future directions of research of marine mycobiota for the Arctic region as a whole.

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RED KING CRAB IN THE COASTAL BARENTS SEA: A REVIEW OF MMBI STUDIES

Transaction Kola Science Cetnre ◽

10.37614/2307-5252.2020.11.4.006 ◽

2020 ◽

Vol 11 (4) ◽

pp. 134-150

Author(s):

A.G. Dvoretsky ◽

Keyword(s):

Barents Sea ◽

Benthic Communities ◽

Red King Crab ◽

Indigenous Status ◽

King Crab ◽

Symbiotic Relationships ◽

The Barents Sea ◽

Fishery Science

In 1960th, red king crab was intentionally introduced into the Barents Sea. This species has formed a new self-sustaining population. In Russian waters, the commercial fishery of red king crab was started in 2004. Non-indigenous status and high commercial value of the crab have led to growing interest in the study of its biology and ecology. Red king crab has been intensively studied by specialists of Murmansk Marine Biological Institute to evaluate the role of this crab in local benthic communities and provide a theoretic basis and important applications for fishery science. New data on the population dynamics, symbiotic relationships, feeding and reproduction of red king crab have been obtained from long-term studies in coastal waters of the Barents Sea. Significant results of these studies are presented in this review.

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Regularities and features of ice conditions of the Barents Sea in the second half of XX – early XXI century

10.29006/978-5-6045110-0-8/(15) ◽

2021 ◽

pp. 179-194

Author(s):

I.O. Dumanskaya ◽

Keyword(s):

Barents Sea ◽

Ice Cover ◽

Heat Fluxes ◽

The Arctic ◽

Cycle Period ◽

Arctic Seas ◽

Sea Ice Extent ◽

The Barents Sea ◽

Western Border ◽

Quantitative Changes

The warming of the Arctic, especially intensified at the beginning of the XXI century, is accompanied by a significant decrease in the area of ice cover in the Arctic seas. The article shows the quantitative changes in the ice parameters of the Barents Sea, as well as factors affecting the formation of ice cover in recent years. In the twenty-first century the frequency of occurrence of mild winters has increased by 17%, the frequency of severe winters has decreased by 19%. Significantly increased the temperature at the meteorological station Malye Karmakuly, water temperature at transect "Kola Meridian", atmospheric and oceanic heat fluxes, and speed of sea currents on the Western border of the Barents sea. The duration of the ice period decreased by an average of 2–3 weeks, and the rate of reduction of ice cover was 7.2% for 10 years. This is the highest speed compared to other Arctic seas. The article shows that the variability of the ice cover of the Barents Sea and other parameters of the natural environment in the region has the cyclic character. Presumably, the cycle period is close to 84 years, which corresponds to the orbital period of Uranium. The minimum sea ice extent after 1935–1945 is expected in the period 2019–2029.

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The role of marine mammals in the Barents Sea foodweb

ICES Journal of Marine Science ◽

10.1093/icesjms/fsz136 ◽

2019 ◽

Vol 76 (Supplement_1) ◽

pp. i37-i53 ◽

Cited By ~ 2

Author(s):

Marie-Anne Blanchet ◽

Raul Primicerio ◽

André Frainer ◽

Susanne Kortsch ◽

Mette Skern-Mauritzen ◽

...

Keyword(s):

Marine Mammals ◽

Barents Sea ◽

Phylogenetic Group ◽

The Arctic ◽

Phylogenetic Groups ◽

Baleen Whales ◽

Trophic Links ◽

The Barents Sea ◽

Network Modularity

Abstract Marine mammals are important players in the Barents Sea ecosystem but their structural role in the foodweb has been little explored. We compare foodweb-related characteristics within and between phylogenetic groups for 19 marine mammals. As a group, they directly connect to the most central species (i.e cod and haddock) in the Barents Sea (i.e. cod and haddock) and consume over half of the available species. Pinnipeds are the most homogenous phylogenetic group with high omnivory and high prey richness. Mysticetes are split between well-connected species with high omnivory like the humpback whale, and peripheral specialists like the blue whale. Based on foodweb-derived indices some species consistently cluster together forming two groups, suggesting topological redundancy within them. One is dominated by Arctic seals and the other includes most of the baleen whales. Marine mammals generally contribute to network modularity as their trophic links are mainly within their own module. However, Atlantic species such as the grey seal act as a module connector decreasing modularity. This might negatively affect ecosystem robustness with perturbation effects spreading further and quicker in the foodweb. In the Arctic reaches of the Barents Sea, climate warming is likely to bring about extensive changes in the foodweb structure through a redistribution of species.

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Redescription of Admete sadko Gorbunov, 1946 (Gastropoda: Cancellariidae)

Zootaxa ◽

10.11646/zootaxa.4508.3.5 ◽

2018 ◽

Vol 4508 (3) ◽

pp. 427

Author(s):

IVAN O. NEKHAEV

Keyword(s):

Barents Sea ◽

The Arctic ◽

Eastern Region ◽

Bering Strait ◽

Arctic Seas ◽

The Barents Sea ◽

The Family

Five species of the family Cancellariidae are currently known from Arctic seas: Admete contabulata Friele, 1879, A. clivicola Høisæter, 2011, A. solida (Aurivillius, 1885), A. viridula (Fabricius, 1780) and Iphinopsis inflata (Friele, 1879) (Golikov et al. 2001; Kantor & Sysoev 2006; Høisæter 2011). Admete contabulata, A. clivicola and Iphinopsis inflata are only known from the Atlantic part of the Arctic, i.e. Norwegian and southwestern Barents seas (Høisæter 2011; Nekhaev 2014). Admete solida has been rarely reported since its first description from the Bering Strait (Sysoev & Kantor 2002), however Nekhaev & Krol (2017) recently reported a specimen from the eastern region of the Barents Sea that is similar in morphology to the holotype of this species. Admete viridula is the only representative of Admete reported from Siberian seas (Golikov et al. 2001; Lyubin 2003; Kantor & Sysoev, 2006).

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Review of clustering and ranking methods for technological accessibility assessment of the Arctic seas as illustrated by the Barents Sea case study

Neftyanoe khozyaystvo - Oil Industry ◽

10.24887/0028-2448-2017-7-64-67 ◽

2017 ◽

pp. 64-67

Author(s):

K.N. Pivovarov ◽

◽

A.B. Zolotukhin ◽

Keyword(s):

Barents Sea ◽

The Arctic ◽

Ranking Methods ◽

Arctic Seas ◽

The Barents Sea

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Features of the glacial formations structure and bottom relief forms related to them according to seismoacoustic profiling data and their role in the decision of discussion issues of the quarterly cover formation of the Barents Sea

10.29006/978-5-6045110-0-8/(5) ◽

2021 ◽

pp. 25-43

Author(s):

A.E. Rybalko ◽

◽

M.Yu. Tokarev ◽

Keyword(s):

Barents Sea ◽

The Arctic ◽

Arctic Seas ◽

Novaya Zemlya ◽

Marine Deposits ◽

The Barents Sea ◽

Pack Ice ◽

History Of ◽

Continental Origin ◽

Loose Sediments

Hot questions in the modern Quaternary geology of the Arctic seas associated with their glaciation are discussed in this article. The questions of the history of the occurrence of the problem of shelf glaciation or “drift” accumulation of boulder-bearing sediments are considered in detail. The results of seismic-acoustic studies and their interpretation with the aim of seismic stratigraphic and genetic partition of the cover of loose sediments of Quaternary age are considered in detail. Arguments are presented in favor of the continental origin of glaciers (Novaya Zemlya, Ostrovnoy and Scandinavian), which in the late Neopleistocene spread to the shelf of the Barents Sea and occupied its surface to depths of 120−150 m. Further development of glaciation was already due to the expansion of the area of shelves glaciers. The facies zoning of glacial-marine deposits is estimated, which is related to the distance from the front of the glaciers. It is concluded that already at the end of the Late Pleistocene, most of the modern Barents Sea was free from glaciers and from the annual cover of pack ice. Data on the absence of the area distribution of frozen sediment strata within the modern Barents Sea shelf are presented.

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Trends in the intensity of dense water cascading from the Arctic shelves due to ice cover reduction in the Arctic seas

Arctic and Antarctic Research ◽

10.30758/0555-2648-2021-67-4-318-327 ◽

2021 ◽

Vol 67 (4) ◽

pp. 318-327

Author(s):

F. K. Tuzov

Keyword(s):

Arctic Ocean ◽

Barents Sea ◽

Beaufort Sea ◽

Ice Cover ◽

The Arctic ◽

Arctic Seas ◽

Dense Water ◽

The Barents Sea ◽

The Arctic Ocean ◽

Shelf Seas

The article discusses the possible relationship between changes in the ice cover area of the shelf seas of the Arctic Ocean and the intensity of dense water cascading, based on calculation data obtained with the NEMO model for the period 1986–2010, with the findings issued at 5-day intervals and a spatial resolution of 1/10°. The cascading cases were calculated using an innovative method developed by the author. The work is based on the assumption that as the ice cover in the seas retreats, the formation of cooled dense water masses is intensified, which submerge and flow down the slope from the shelf to great depths. Thus, in the Arctic shelf seas, the mechanism of water densification due to cooling is added to the mechanism of water densification during ice formation, or, replaces it for certain regions. It was found that in the Barents Sea, the Laptev Sea and the Beaufort Sea, a decrease in the ice cover area causes an increase in the number of cases of cascading. However, in most of the Arctic seas, as the area of ice cover decreases, the number of cases of cascading also decreases. As a consequence, for the whole Arctic shelf area, the number of cases of cascading also decreases with decreasing ice cover. It is shown that in the Beaufort Sea the maximum number of cascading cases was observed in the winter period of 2007–2008, which was preceded by the summer minimum of the ice cover area in the Arctic Ocean. In the Barents Sea after 2000, a situation has been observed where the ice area has been decreasing to zero values, whereas the number of cascading cases has for some time (1 month approximately) remained close to high winter values. This possibly means that the cooling and densification of the waters in ice-free areas occurs due to thermal convection. Based on the calculation of the number of cases of cascading, it can be argued that the intensification of cascading due to a reduction in the ice cover is a feature of individual seas of the Arctic Ocean, those in which there is no excessive freshening of the upper water layer due to ice melting.

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Aerosol characteristics over the Arctic seas of Eurasia: results of measurements in 2018 and average spatial distribution in the summer-autumn periods of 2007–2018

Arctic and Antarctic Research ◽

10.30758/0555-2648-2019-65-4-405-421 ◽

2019 ◽

Vol 65 (4) ◽

pp. 405-421 ◽

Cited By ~ 1

Author(s):

V. F. Radionov ◽

D. M. Kabanov ◽

V. V. Polkin ◽

S. M. Sakerin ◽

O. N. Izosimova

Keyword(s):

Spatial Distribution ◽

Black Carbon ◽

Barents Sea ◽

The Arctic ◽

Arctic Seas ◽

The North ◽

The Barents Sea ◽

East Siberian Sea ◽

Barents And Kara Seas ◽

Carbon Concentrations

In August-September 2018, on the route of the expedition “Arctic-2018” (R/V “Akademik Tryoshnikov”) in the Arctic Ocean we carried out the following cycle of measurements of aerosol characteristics: aerosol optical depth (AOD) of the atmosphere in the wavelength range of 0.34–2.14 μm, number concentrations of particles with diameters of 0.4–10 μm, and mass concentration of absorbing substance (black carbon) in the near-ground layer. The optical and microphysical characteristics of aerosol were measured using portable sun photometer SPM, photoelectric particle counter AZ-10, and aethalometer MDA. Analysis of the measurements showed that aerosol and black carbon concentrations are maximal in the atmosphere of the Barents Sea and especially in its southern part, subject to outflows of fine aerosol from the north of Europe. The average aerosol characteristics near Kola Peninsula had been 7.2 cm–3 for aerosol concentration, 167 ng/m3 for black carbon concentration, and 0.16 for AOD (0.5 μm). To estimate the specific features of the spatial variations in aerosol over the Arctic seas of Russia, we generalized the measurements in nine (2007–2018) expeditions. All aerosol characteristics are found to decrease from west toward east in the average spatial distribution. The average concentrations of aerosol are 3.5 cm–3, black carbon concentrations are 41.2 ng/m3, and AOD (0.5 μm) values are 0.080 over the Barents Sea; and they decrease to 1.96 cm–3, 24.3 ng/m3, and 0.039 respectively over the East Siberian Sea. The decreasing tendency in the northeastern direction is noted in more detailed latitude-longitude distributions of aerosol characteristics in the atmosphere over the Barents and Kara Seas.

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