scholarly journals FISHERY CHARACTERISTICS OF PIKE ESOX LUCIUS (L.) OF TOPO-PYAOZERO RESERVOIR (WHITE SEA CATCHMENT AREA)

2021 ◽  
Vol 2021 (3) ◽  
pp. 69-76
Author(s):  
Andrey Pavlovich Georgiev ◽  
Vyacheslav Anatolievich Shirokov ◽  
Nadezhda Stepanovna Cherepanova
Keyword(s):  
Maximum Rate ◽  
Catchment Area ◽  
White Sea ◽  
Present Stage ◽  
Total Allowable Catch ◽  
Commercial Operation ◽  
Sexually Mature ◽  
Commercial Stock ◽  
Mature Part ◽  
Biomass Increase

The article presents the results of the work carried out within the framework of forecast topics and economic contractual topics aimed to assess the stock and production of pike in the Topo-Pyaozero (Kumskoe) Reservoir. There have been studied its main biological and structural-population indicators. Calculations of indicators of pike’s abundance and biomass at the present stage, necessary for the rational regulation of the fishery have been carried out. It was found that the fishing possibilities of the presented pike populations correspond to the production possibilities of its sexually mature part and the value obtained as a result of the biomass increase. Pike should be taken into the commercial operation from the age of 4+ years and older. The performed calculations of the stock size based on the materials of 2009–2020 recommend the volume of the pike total allowable catch at the present stage not less than 36 tons, or 21% of the value of the commercial stock (at the maximum rate of 23.4%). From the results of observations it follows that the abundance and stocks of pike in the Topo-Pyaozero Reservoir make it possible to provide large volumes of catch at the present time, and the total catch can be increased to the calculated values the volume of the allowable catch, provided that a rational fishery is maintained in water bodies. The intensity of fishing and an increase in pike catches in the reservoir should be considered as mandatory measures in terms of biological reclamation in reservoirs

Socio-economic development scenarios of the White Sea regions.

2021 ◽  
pp. 52-69
Author(s):  
Anna E. Kurilo ◽  
◽  
Pavel V. Druzhinin ◽  
Keyword(s):  
Economic Development ◽  
Catchment Area ◽  
White Sea ◽  
The Arctic ◽  
Arctic Zone ◽  
The White Sea ◽  
Development Scenarios ◽  
Arctic Regions ◽  
Macroeconomic Indicators ◽  
Scenario Approach

In the process of creating a national system of strategic planning and within the framework of normative economics, the scenario approach provides opportunities for constructing goals and directions of socio-economic territories development. Being a planning tool the scenario approach allows forming the directions of regional development. These processes take particular relevance for the regions of our country that are the parts of the Arctic zone, especially in increased interest and attention to these territories resources from other external agents. The main aim of this paper is to elaborate development scenarios for the regions, which are fully or partially included in the Arctic zone and the White Sea catchment area. Based on the dynamics analysis of the main macroeconomic indicators and development trends for 1990–2019, the dependence of indicators for forecasting socio-environmental and economic development of these regions, was built. We applied scenario approach to describe possible development scenarios of Arctic regions in the White Sea catchment area. The novelty of the work is the construction of matrix of development scenarios of the Arctic regions, united by belonging to the White Sea catchment area. The analysis results of macroeconomic indicators for three elements of sustainable development show that the regions have rather weak economic development, stagnation of social indicators and difficult environmental situation. We outlined the problems constraining the development of Arctic regions in the White Sea catchment area and the directions to their solutions. To reach the trajectory of sustainable development is possible under condition of coordination and implementation of the measures taken by the state and regional authorities. This scenario of development strategy according to the innovation trajectory will allow to consolidate activity of federal, regional and municipal authorities of these territories. The integrated development program of the Arctic regions in the White Sea catchment area can be a coordinating platform.

Geochemistry of terricolous lichens in the White Sea catchment area

2013 ◽  
Vol 450 (1) ◽  
pp. 514-520 ◽  
Author(s):  
V. P. Shevchenko ◽  
O. S. Pokrovsky ◽  
D. P. Starodymova ◽  
E. V. Vasyukova ◽  
A. P. Lisitzin ◽  
...  
Keyword(s):  
Catchment Area ◽  
White Sea ◽  
The White Sea ◽  
Terricolous Lichens

Physical-chemical modeling of elements' behavior in mixing sea and fresh waters of minor rivers in the White Sea catchment area

2017 ◽  
Vol 52 (9) ◽  
pp. 890-896
Author(s):  
Victoria V. Maksimova ◽  
Svetlana I. Mazukhina ◽  
Tatiana A. Cherepanova ◽  
Tamara T. Gorbacheva
Keyword(s):  
Catchment Area ◽  
White Sea ◽  
The White Sea ◽  
Chemical Modeling ◽  
Fresh Waters ◽  
Physical Chemical

scholarly journals FISHERY RENT AND VALUE OF AQUATIC BIORESOURCES

2020 ◽  
Vol 200 ◽  
pp. 229-242
Author(s):  
V. V. Samoylenko
Keyword(s):  
Discount Rate ◽  
Russian Federation ◽  
Net Present Value ◽  
Developed Countries ◽  
Strong Impact ◽  
Social Discount Rate ◽  
Present Value ◽  
Total Allowable Catch ◽  
The Social ◽  
Commercial Stock

Fishery rent is assessed quantitatively for Russian Federation in 2014–2018. The annual rent value changed from 43 to 110 billion roubles, with the average amount of 88 billion roubles per year. On this basis, the net present value of non-cultivated aquatic living stocks is calculated using the data of official statistics, under assumption of 15 % return of capital. The fishery rent dynamics is determined mainly by the consumers demand (sales price) and the level of production cost. Other parameters, as the amount of capital, its profitability, etc., have smaller impact on the rent. Direct calculating of the aquatic living resources value using the data on total allowable catch (TAC) or commercial stock has large errors and uncertainty in contrast to the method of net present value that accounts the rental income. However, monetary valuation of aquatic living resources by this method requires a correct assessment of social discount rate because of its strong impact on the results of calculation. The social discount rate for Russian Federation varied in the 2014–2018 from 2.13 % to 3.73 % that is considered as a quite low level, typical for developed countries. Taking into account this correction, the value of non-cultivated aquatic living resources in Russian Federation is amounted as 1.4–4.7 trillion roubles in 2014–2018 that is considered as the minimal limit corresponded with an «ideal», undisturbed state of the system. In real, both value of fishery rent and value of fishery resources are affected by a number of officially unreported factors, such as discards and technological losses, which summary impact is assessed as 45 % of the fishery rent or 39 billion roubles per year, on average. Thus, the more realistic value of the non-cultivated aquatic living resources in Russia in 2014–2018 is 2.1–6.4 trillion roubles, on average 4.3 trillion roubles.

scholarly journals Current state of stock and fishery of red king crab Paralithodes camtschaticus at West Kamchatka

2020 ◽  
Vol 200 (2) ◽  
pp. 245-269
Author(s):  
P. Yu. Ivanov
Keyword(s):  
Shelf Zone ◽  
Red King Crab ◽  
Total Allowable Catch ◽  
King Crab ◽  
Population Decrease ◽  
Fishing Vessels ◽  
Current State ◽  
Crab Population ◽  
Commercial Stock

Current state of the red king crab population at West Kamchatka is considered on the data of bottom trawl surveys and fishery statistics since 2013. Some biological parameters of the crabs and assessments of the commercial stock are presented; recent condition of the red king crab fishery and evaluation of the total allowable catch are discussed. The red king crab fishery was resumed in 2013, after 8 years of ban caused by the population decrease. During the ban, the stock restored and exceeded the value observed before the ban: the total accounted abundance of red king crab in 2017 was about 244 . 106 ind. that was the highest level for the last two decades, with the number of commercial males estimated as 110 . 106 ind. — this amount was never observed before on the shelf of western Kamchatka, at least in four decades of surveys. Recently the northern forbidden district and Khayryuzovsky district of the shelf zone lost their role of the main areas of crabs reproduction and their juveniles feeding, in favour to the Ichinsky district located southward. Recent fishery of red king crab is fruitful and sustainable. In the last 3 years, the major part of annual catch is transported alive to ports of China and South Korea. For this purpose, the caught crabs are sorted strictly aboard fishing vessels and the largest males are released back to the sea. Possibly, year-to-year increasing of the males size on the West Kamchatka shelf is caused by this sorting and releasing; another effect of the large-sized crabs releasing is relatively low number of recruits in the last couple of years. The fishery elimination coefficient is estimated in the range 5–16 % of the total accounted stock for 2013–2019, that shows a highly precautionary approach. Gradual decreasing of the crab commercial stock is forecasted for the nearest future, though the stock will remain above the target value. Current state of the red king crab population at West Kamchatka is not considered as dangerous, and ongoing intense fishery of this valuable species within the recommended volumes will not affect this sustainable state.

Neuronal and Extraneuronal Uptake of 3H-Norepinephrine in the Heart of the Active Bat: An Electron Microscopic Radioautographic Study

1973 ◽  
Vol 31 ◽  
pp. 522-523
Author(s):  
Martin Hagopian ◽  
Michael D. Gershon ◽  
Eladio A. Nunez
Keyword(s):  
Smooth Muscle ◽  
Monoamine Oxidase ◽  
Vascular Smooth Muscle ◽  
Cardiac Muscle ◽  
Maximum Rate ◽  
External Medium ◽  
Extraneuronal Uptake ◽  
Electron Microscopic ◽  
Cardiac Tissues ◽  
High Affinity

The ability of cardiac tissues to take up norepinephrine from an external medium is well known. Two mechanisms, called Uptake and Uptake respectively by Iversen have been differentiated. Uptake is a high affinity system associated with adrenergic neuronal elements. Uptake is a low affinity system, with a higher maximum rate than that of Uptake. Uptake has been associated with extraneuronal tissues such as cardiac muscle, fibroblasts or vascular smooth muscle. At low perfusion concentrations of norepinephrine most of the amine taken up by Uptake is metabolized. In order to study the localization of sites of norepinephrine storage following its uptake in the active bat heart, tritiated norepinephrine (2.5 mCi; 0.064 mg) was given intravenously to 2 bats. Monoamine oxidase had been inhibited with pheniprazine (10 mg/kg) one hour previously to decrease metabolism of norepinephrine.

Ultrastructure of the basal body apparatus in epidermal cells of a sponge larva (Aplysilla SP: Demospongiae)

1992 ◽  
Vol 50 (1) ◽  
pp. 928-929
Author(s):  
R.L. Pinto ◽  
R.M. Woollacott
Keyword(s):  
Sodium Bicarbonate ◽  
Epoxy Resin ◽  
Basal Body ◽  
Phosphate Buffer ◽  
Similar Data ◽  
Basal Apparatus ◽  
Striated Rootlet ◽  
The Common ◽  
Basal Foot ◽  
Sexually Mature

The basal body and its associated rootlet are the organelles responsible for anchoring the flagellum or cilium in the cytoplasm. Structurally, the common denominators of the basal apparatus are the basal body, a basal foot from which microtubules or microfilaments emanate, and a striated rootlet. A study of the basal apparatus from cells of the epidermis of a sponge larva was initiated to provide a comparison with similar data on adult sponges.Sexually mature colonies of Aplysillasp were collected from Keehi Lagoon Marina, Honolulu, Hawaii. Larvae were fixed in 2.5% glutaraldehyde and 0.14 M NaCl in 0.2 M Millonig’s phosphate buffer (pH 7.4). Specimens were postfixed in 1% OsO4 in 1.25% sodium bicarbonate (pH 7.2) and embedded in epoxy resin. The larva ofAplysilla sp was previously described (as Dendrilla cactus) based on live observations and SEM by Woollacott and Hadfield.

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