База данных: Электронная библиотека
Страница 4, Результатов: 36
Отмеченные записи: 0
31.
Подробнее
K79
Kovalev, Yu.A.
Evaluation of Northeast Arctic Cod Stock Harvest Rates Corresponding to Different Management Objectives / Kovalev, Yu.A., Kleptsova, N.S. // Modern aspects of quantitative analysis of the fishing raw material base: VNIRO proceedings. - M.: VNIRO Publishing, 2014. - V. 151. P. 184-191. - 2014
~РУБ Article
Рубрики: Cod
Stocks
Management
Modeling
Calculations
Biomass
Аннотация: A model of population and fisheries dynamics for the Northeast Arctic cod (Gadus morhua morhua) in the Barents Sea was developed. The model based assessments include: maximum sustainable yield (655,000 t) and corresponding fisheries mortality level (F) (0.48); maximum mean annual profit of cod fisheries (13.7 bln RUR) with F = 0.23; fisheries mortality level correspoding to maximum employment in fisheries F = 0.85. The existing cod exploitation level based on 0.4 target mortality level promotes for achieving the objectives to maximize catch and profit.
Доп.точки доступа:
Kleptsova, N.S.
K79
Kovalev, Yu.A.
Evaluation of Northeast Arctic Cod Stock Harvest Rates Corresponding to Different Management Objectives / Kovalev, Yu.A., Kleptsova, N.S. // Modern aspects of quantitative analysis of the fishing raw material base: VNIRO proceedings. - M.: VNIRO Publishing, 2014. - V. 151. P. 184-191. - 2014
Рубрики: Cod
Stocks
Management
Modeling
Calculations
Biomass
Аннотация: A model of population and fisheries dynamics for the Northeast Arctic cod (Gadus morhua morhua) in the Barents Sea was developed. The model based assessments include: maximum sustainable yield (655,000 t) and corresponding fisheries mortality level (F) (0.48); maximum mean annual profit of cod fisheries (13.7 bln RUR) with F = 0.23; fisheries mortality level correspoding to maximum employment in fisheries F = 0.85. The existing cod exploitation level based on 0.4 target mortality level promotes for achieving the objectives to maximize catch and profit.
Доп.точки доступа:
Kleptsova, N.S.
32.
Подробнее
S21
Sapozhnikov, V.V.
Hydrochemical Methods of the Bioproductivity Assessment in Fishing Grounds of the World Ocean / Sapozhnikov, V.V. // Modern methods for assessing the biological productivity of waters in industrial areas of the World ocean: VNIRO proceedings. - M.: VNIRO Publishing, 2014. - V. 152. - P. 3-14. - 2014
~РУБ Article
Рубрики: Hydrochemistry
Bioproductivity
Fishery
World ocean
Calculations
Stocks
Аннотация: The article presents not only theoretical background for the primary production (PP) assessment based on hydrochemical indices, but also numerous examples of the PP assessment for polar waters, upwelling zones, and ultraoligotrophic tropical waters. All advantages of the PP assessment based on hydrochemical parameters are shown, including a better representation and a more thorough assessment of PP in the Wordld ocean.
S21
Sapozhnikov, V.V.
Hydrochemical Methods of the Bioproductivity Assessment in Fishing Grounds of the World Ocean / Sapozhnikov, V.V. // Modern methods for assessing the biological productivity of waters in industrial areas of the World ocean: VNIRO proceedings. - M.: VNIRO Publishing, 2014. - V. 152. - P. 3-14. - 2014
Рубрики: Hydrochemistry
Bioproductivity
Fishery
World ocean
Calculations
Stocks
Аннотация: The article presents not only theoretical background for the primary production (PP) assessment based on hydrochemical indices, but also numerous examples of the PP assessment for polar waters, upwelling zones, and ultraoligotrophic tropical waters. All advantages of the PP assessment based on hydrochemical parameters are shown, including a better representation and a more thorough assessment of PP in the Wordld ocean.
33.
Подробнее
K50
Kivva, K.K.
Assessment of Primary Production in the Bering with New Approach / Kivva, K.K. // Modern methods for assessing the biological productivity of waters in industrial areas of the World ocean: VNIRO proceedings. - M.: VNIRO Publishing, 2014. - V. 152. - P. 73-84. - 2014
~РУБ Article
Рубрики: Bering Sea
Bioproductivity
Biochemistry
Ecosystems
Calculations
Okhotsk
Аннотация: Oceanographic surveys of high spatial resolution were carried out in the western Bering Sea during past few years, which allow estimating primary production in the region based on drawdowns of nutrients. Present work suggests a new method of net (≈ to new) and gross (≈ total) primary production assessment based on summer or autumn nutrients and dissolved oxygen profiles. For 2012, gross (or total) primary production in the region was in range of 50-250 g C m-2 a-1, while net community (or new) primary production reached 30-80 g C m-2 a-1. New to total production ratio was in range of 0.2-0.8. The presented new method revealed good agreement with previous studies and supposed for use in the future ivestigations.
K50
Kivva, K.K.
Assessment of Primary Production in the Bering with New Approach / Kivva, K.K. // Modern methods for assessing the biological productivity of waters in industrial areas of the World ocean: VNIRO proceedings. - M.: VNIRO Publishing, 2014. - V. 152. - P. 73-84. - 2014
Рубрики: Bering Sea
Bioproductivity
Biochemistry
Ecosystems
Calculations
Okhotsk
Аннотация: Oceanographic surveys of high spatial resolution were carried out in the western Bering Sea during past few years, which allow estimating primary production in the region based on drawdowns of nutrients. Present work suggests a new method of net (≈ to new) and gross (≈ total) primary production assessment based on summer or autumn nutrients and dissolved oxygen profiles. For 2012, gross (or total) primary production in the region was in range of 50-250 g C m-2 a-1, while net community (or new) primary production reached 30-80 g C m-2 a-1. New to total production ratio was in range of 0.2-0.8. The presented new method revealed good agreement with previous studies and supposed for use in the future ivestigations.
34.
Подробнее
L29
Lapina, N.M.
Biochemical Monitoring of the Russian Arctic Seas under the Climate Change / Lapina, N.M., Torgunova, N.I., Agatova, A.I. // Modern methods for assessing the biological productivity of waters in industrial areas of the World ocean: VNIRO proceedings. - M.: VNIRO Publishing, 2014. - V. 152. - P. 101-117. - 2014
~РУБ Article
Рубрики: Biochemistry
Monitoring
Climate
Hydrobionts
Ecosystems
Calculations
Аннотация: Quantities and biochemical composition of dissolved and particulate organic matter (OM) as well as rates of the OM transformation in the Russian Arctic seas are analyzed. There is a significant variability in the OM concentrations with the maximum concentrations of dissolved and particulate OM in the White and Kara seas, while the minimum ones were observed in the East-Siberian Sea. Rates of the OM oxidation were maximum in various frontal zones formed with water masses of different origin as well as the seasonal ice melting. It is shown that despite low temperatures in the Arctic marine ecosystems, there is an intensive transformation of both autochthonous, and allochthonous OM, because local phsycrophils expend low activation energies on oxidation and hydrolytic splitting of OM. In the Arctic seas, the main biochemical components of the dissolved OM are carbohydrates and lipids, while proteins and carbohydrates dominate in the particulate OM.
Доп.точки доступа:
Torgunova, N.I.
Agatova, A.I.
L29
Lapina, N.M.
Biochemical Monitoring of the Russian Arctic Seas under the Climate Change / Lapina, N.M., Torgunova, N.I., Agatova, A.I. // Modern methods for assessing the biological productivity of waters in industrial areas of the World ocean: VNIRO proceedings. - M.: VNIRO Publishing, 2014. - V. 152. - P. 101-117. - 2014
Рубрики: Biochemistry
Monitoring
Climate
Hydrobionts
Ecosystems
Calculations
Аннотация: Quantities and biochemical composition of dissolved and particulate organic matter (OM) as well as rates of the OM transformation in the Russian Arctic seas are analyzed. There is a significant variability in the OM concentrations with the maximum concentrations of dissolved and particulate OM in the White and Kara seas, while the minimum ones were observed in the East-Siberian Sea. Rates of the OM oxidation were maximum in various frontal zones formed with water masses of different origin as well as the seasonal ice melting. It is shown that despite low temperatures in the Arctic marine ecosystems, there is an intensive transformation of both autochthonous, and allochthonous OM, because local phsycrophils expend low activation energies on oxidation and hydrolytic splitting of OM. In the Arctic seas, the main biochemical components of the dissolved OM are carbohydrates and lipids, while proteins and carbohydrates dominate in the particulate OM.
Доп.точки доступа:
Torgunova, N.I.
Agatova, A.I.
35.
Подробнее
M37
Maslennikov, V.V.
Temporal and Spatial Variability of Total Productivity of the Antarctic Waters / Maslennikov, V.V., Artamonova, K.V., Dukhova, L.A. // Modern methods for assessing the biological productivity of waters in industrial areas of the World ocean: VNIRO proceedings. - M.: VNIRO Publishing, 2014. - V. 152. - P. 133-145. - 2014
~РУБ Article
Рубрики: Bioproductivity
Circulation
Climate
Krill
Calculations
Temperature
Аннотация: Temporal and spatial variability of total productivity in Antarctic water depending on climatic conditions is considered. Favorable and unfavorable periods of commercial Antarctic krill concentration are established. The Antarctic krill is a most valuable fishing object in the Antarctic waters. It makes a basic part of feeding ration for numerous consumers. A spatial inhomogeneity of the Antarctic krill distribution is shown. Chemical indices of the high-productivity areas of the Antarctic water are established. It is shown the chemical indices of the dense Antarctic Shelf waters in the Slope areas intensified the Antarctic Slope front that is a most high-fish capacity area in Antarctic.
Доп.точки доступа:
Artamonova, K.V.
Dukhova, L.A.
M37
Maslennikov, V.V.
Temporal and Spatial Variability of Total Productivity of the Antarctic Waters / Maslennikov, V.V., Artamonova, K.V., Dukhova, L.A. // Modern methods for assessing the biological productivity of waters in industrial areas of the World ocean: VNIRO proceedings. - M.: VNIRO Publishing, 2014. - V. 152. - P. 133-145. - 2014
Рубрики: Bioproductivity
Circulation
Climate
Krill
Calculations
Temperature
Аннотация: Temporal and spatial variability of total productivity in Antarctic water depending on climatic conditions is considered. Favorable and unfavorable periods of commercial Antarctic krill concentration are established. The Antarctic krill is a most valuable fishing object in the Antarctic waters. It makes a basic part of feeding ration for numerous consumers. A spatial inhomogeneity of the Antarctic krill distribution is shown. Chemical indices of the high-productivity areas of the Antarctic water are established. It is shown the chemical indices of the dense Antarctic Shelf waters in the Slope areas intensified the Antarctic Slope front that is a most high-fish capacity area in Antarctic.
Доп.точки доступа:
Artamonova, K.V.
Dukhova, L.A.
36.
Подробнее
N89
Novosadova, A.V.
About Necessity of Correcting Coefficient at Researches of Sterlet Eggs after Fixation / Novosadova, A.V., Novosadov, A.G. // Commercial species and their biology: VNIRO proceedings. - M.: VNIRO Publishing, 2015. - V. 154. - P. 80-84. - 2015
~РУБ Article
Рубрики: Eggs
Coefficients
Sterlet
Weight
Chemistry
Calculations
Аннотация: Change of weight of eggs of a sterlet after fixing is investigated. Its essential reduction when using three fixing solutions is shown: 4% solutions of formaldehyde, Serre's liquid and 96 degrees of ethanol. Need of definition and use of correction coefficients during the work with the fixed eggs of fishes is postulated.
Доп.точки доступа:
Novosadov, A.G.
N89
Novosadova, A.V.
About Necessity of Correcting Coefficient at Researches of Sterlet Eggs after Fixation / Novosadova, A.V., Novosadov, A.G. // Commercial species and their biology: VNIRO proceedings. - M.: VNIRO Publishing, 2015. - V. 154. - P. 80-84. - 2015
Рубрики: Eggs
Coefficients
Sterlet
Weight
Chemistry
Calculations
Аннотация: Change of weight of eggs of a sterlet after fixing is investigated. Its essential reduction when using three fixing solutions is shown: 4% solutions of formaldehyde, Serre's liquid and 96 degrees of ethanol. Need of definition and use of correction coefficients during the work with the fixed eggs of fishes is postulated.
Доп.точки доступа:
Novosadov, A.G.
Страница 4, Результатов: 36