Long-term dynamics of hydrological conditions of the Zelenetskaya Bay, East Murman

Il’in, G. V.; Моисеев, Д. В.; Shirokolobov, D. V.; Deryabin, Alexey; Павлова, Л. А.

doi:10.21443/1560-9278-2016-1/2-268-277

Cited by 10 publications

(10 citation statements)

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“…Mean depth is 7 m. Depth range in adjacent sea areas considered in this study is 30-40 m. High tidal levels (3-4 m) ensure intensive water exchange between the inner part of Dalnezelenetskaya Bay and the open sea. According to 2002-2012 data, temperature minimum in the upper water layer (surface) occurs in February (0.7 • C) and the maximum in August (9.7 • C) although in some years the maximum could be observed in July (Il'in et al, 2016). The lowest salinity level (32.2 psu) is usually registered in May and associated with high input of melt water.…”

Section: Study Areamentioning

confidence: 99%

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Effects of Environmental Factors on the Abundance, Biomass, and Individual Weight of Juvenile Red King Crabs in the Barents Sea

Dvoretsky

2020

Front. Mar. Sci.

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We examined the effects of environmental factors (water temperature, the North Atlantic Oscillation winter index -NAOw, and cod biomass) on the abundance (population number), biomass and mean individual weight of juvenile red king crab (Paralithodes camtschaticus) at a typical coastal site of the Barents Sea, Dalnezelenetskaya Bay, a place of red king crab introduction. Current-year abundance and stock data for 3-5-year-old crabs were positively related to water temperature in September and October. The biomass of crabs at age 0-2 year was positively correlated with lag 1 water temperature in August, while the abundance of age 0-5 year was positively correlated to the NAOw indicating more favorable habitat conditions in warmer periods. The abundance of crabs at age 3-5 year was negatively correlated to December temperature and mean water temperature and temperature anomaly with a 1-year lag. These temperature relationships, together with negative correlations between stock indices of crabs and cod (Gadus morhua) and positive relationships between mean crab weight and cod biomass, suggests that the fish predation, which is higher in warmer years, has a more important role in mortality of 3-5 year crabs than 0-2 year crabs. Our findings may be useful for modeling recruitment processes and management of red king crab in the Barents Sea.

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Section: Study Areamentioning

confidence: 99%

“…The lowest salinity level (32.2 psu) is usually registered in May and associated with high input of melt water. In autumn and winter, salinity is stabilized at a level of 34 psu (Il'in et al, 2016). The minimum level of dissolve oxygen is registered in December (94%), the maximum in May (124%) (Dvoretsky and Dvoretsky, in press).…”

Section: Study Areamentioning

confidence: 99%

Effects of Environmental Factors on the Abundance, Biomass, and Individual Weight of Juvenile Red King Crabs in the Barents Sea

Dvoretsky

2020

Front. Mar. Sci.

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“…The hydrological regime at the study sites did not differ from that observed in 2004-2007 [12]. According to literature data, there was a slight increase in water temperature in the coastal regions of the Kola Peninsula [13]. In 1983-1984, the water temperature in the 0-15-m layer in January could drop below -1.5°C, in June-July, it was stably below 7°C and reached 9°C only at the end of August-September.…”

Section: Hydrological Regimementioning

confidence: 49%

“…In 1983-1984, the water temperature in the 0-15-m layer in January could drop below -1.5°C, in June-July, it was stably below 7°C and reached 9°C only at the end of August-September. In 2002-2012, the average surface water temperature was 3.8°С, in July-September, it exceeds 7°С in average, while in winter it did not fall below 0.7°С [13].…”

Section: Hydrological Regimementioning

confidence: 93%

Growth rate of Fucales on the Murman Coast, the Barents Sea

Malavenda

2022

BIO Web Conf.

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Fucales are among the key algae on the coast of the Northern Hemisphere and are being actively studied, although minor attention is paid for the age structure, since there are no reliable signs for determining the age of the algae. Direct observations on the thallus growth on the coast evidence on a variation of this trait under different conditions. We assess the rate of linear growth and the number of formed dichotomous branching per year in Fucus vesiculosus and Fucus distichus on the Murman Coast of the Barents Sea. These parameters differ in plants sampled from different biotopes. The annual growth of F. vesiculosus is two times higher and more dichotomous branches are formed per year in the environment characterized by low water movement intensity and pronounced salinity fluctuations than in plants growing on a weakly protected area of the coast. In the Barents Sea, the branching rate and the annual growth in F. distichus and F. vesiculosus depend on the intensity of water movement and the salinity regime of a particular biotope. The number of formed branches depends also on the number of already formed dichotomies, i.e., on the physiological age of thallus. It is necessary to modify the equation for calculating the age of these species using the correction factors for salinity, the intensity of water movement, and the number of dichotomies.

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“…Seasonal oceanographic fluctuations in Dalnezelenetskay Bay (modified from Kuznetsov & Schoschina 2003; Il'in et al 2016). …”

Section: Gonad Enhancement Of Sea Urchins Reared In a Running‐water Smentioning

confidence: 99%

Aquaculture of green sea urchin in the Barents Sea: a brief review of Russian studies

Dvoretsky

2020

Reviews in Aquaculture

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Gonads of the green sea urchin (Strongylocentrotus droebachiensis) containing valuable carotenoids, polyunsaturated fatty acids, phospholipids and sulphated fucans are in great demand from the expanding market. In Russian waters of the Barents Sea, only a few sites are suitable for commercial harvesting and thus the development of green sea urchin farming in this region. Our review presents a short survey of Russian literature on biological aspects and rearing methods of green sea urchins in the Barents Sea. In the 1980s, spawning induction and larval culture experiments were undertaken to obtain larvae of S. droebachiensis. Later studies were undertaken to test optimal rations and conditions for gonad enhancement of adult sea urchins in sea cages and closed systems. Gonadal growth was higher and faster in sea urchins reared under controlled conditions in closed water circulation tanks compared with sea cages. Regular feeding of cultured animals provided them better gonadal growth than in wild sea urchins irrespective of food items. Algal diets showed a lower level of gonad yield compared with mixed diets (algae + squid, algae + fish), fish diets and prepared diets (artificial feed based on fish skin). The coast of the Kola Peninsula has a good potential for the development of the green sea urchin farming but several financial, socio‐economic, logistic and management problems must be solved before this process starts.

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Long-term dynamics of hydrological conditions of the Zelenetskaya Bay, East Murman

Cited by 10 publications

References 1 publication

Effects of Environmental Factors on the Abundance, Biomass, and Individual Weight of Juvenile Red King Crabs in the Barents Sea

Effects of Environmental Factors on the Abundance, Biomass, and Individual Weight of Juvenile Red King Crabs in the Barents Sea

Growth rate of Fucales on the Murman Coast, the Barents Sea

Aquaculture of green sea urchin in the Barents Sea: a brief review of Russian studies

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