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| Registros recuperados: 1.708 | |
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| Иванов В. Н.; Егоров В. Н.; Усенко Т. Г.; Филиппов Н. А.. |
| A study was made for zinc-65 and manganese-54 accumulation and excretion by the Eucalanus elongatus and Idotea metallica zooplankton species. The intensity of the excretion by zooplankters of the radionuclides intaken with food does not depend on the type of food objects and specimen individual masses. The excretion rates of zinc-65 and manganese-54 intaken with food are observed to be different. Zinc is accumulated and excreted more intensely than manganese. The evidence obtained presents interest for solving problems of biogenic migration of microorganisms in the sea. |
| Tipo: Journal Contribution |
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| Ano: 1979 |
URL: http://10.0.0.194:8080/dspace/handle/99011/3742 |
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| Холодов В. И.; Поповичев В. Н.. |
| In the S. droebachiensis ontogenesis the maximum-to-average rations values increase. This permits large animals to shorten the period of transition from the maximum ration to the average one and to keep the latter at a relatively constant level. The variations in the average daily rations are associated with the period of food digestion, therefore the digestion period may be measured without using the labelled food. Studies on the processes of accumulation and assimilation by Strongylocentrotus droebachiensis of the suspendable and soluble substrates of different chemical nature by the method of chamber analysis made it possible to find out significant peculiarities of these processes. Duration of accumulation, mass of chambers accumulating different... |
| Tipo: Journal Contribution |
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| Ano: 1979 |
URL: http://10.0.0.194:8080/dspace/handle/99011/3765 |
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| Ермолаев К. К.. |
| The number of phenol-decomposing microorganisms is found to decrease regularly in all seasons while moving forward from the littoral zones into the open sea. The highest number of bacteria possessing a high phenol-decomposing activity was isolated in ports and adjoining water areas. Phenol is stated to most actively decay in water taken from the places when the pollution with this toxicant is the highest. Phenol bio-decay is shown to be most effective under the influence of temperature and biogenic salt K2HPO4. Studies of the most important biochemical components of the bacterial cell, DNA, RNA, free nucleotides, lipids and protein, in the process of phenol biodegradation by the Bacterium album culture reveal a considerable decrease in total protein and a... |
| Tipo: Journal Contribution |
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| Ano: 1979 |
URL: http://10.0.0.194:8080/dspace/handle/99011/3734 |
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| Шапиро А. З.; Бобкова А. Н.. |
| Changes in the activity of succinate dehydrogenase (SDH) are studied in different tissues of mussels under effect of copper-containing poisons. A dependence is established between the degree of the SDH activity inhibition and copper ions concentration. Two methods for determining efficiency of copper-containing poisons are compared (hydrobiological - by survival rate and biochemical - by the SDH activity inhibition). The data on this enzyme activity are suggested to be used as a test for estimating the poison efficiency. |
| Tipo: Journal Contribution |
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| Ano: 1979 |
URL: http://10.0.0.194:8080/dspace/handle/99011/3700 |
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| Кирюхина Л. Н.. |
| The article deals with studies in the physicochemical properties as well as in group composition of organic substance and bitumoids. In the Black sea shelf littoral zone bottom sediments. Sands and shell deposits, as compared with mud are shown to contain metamorphosed organic substance. Bottom sediments influenced by the anthropogenic factor are stated to concentrate bituminized organic substance whereas bitumoids are traced to increase in their composition hydrocarbon component content and to decrease that of asphalt and resin. The amount of chloroform-extracted compounds in the sediments is tens and hundreds times as much. The number and distribution of hydrocarbon-oxidating bacteria are closely correlated with the amount of chloroform-extracted... |
| Tipo: Journal Contribution |
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| Ano: 1979 |
URL: http://10.0.0.194:8080/dspace/handle/99011/3731 |
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| Марценюк П. П.; Карнаухов В. Н.. |
| The luminescence spectra were studied for single cells of certain sea algae species in the normal state and as affected by the spectrum visible region (436 nm) radiation. The initial luminescence spectra of green, diatomaceous, golden and brown algae are shown to differ insignificantly. Certain differences are found in changes of the spectra during photodestruction of interacellular luminescent compounds under the effect of the radiation exciting the luminescence. The luminescence spectra of the red and blue-green algae differ from those of representatives of other divisions because the former contain phicobilins, and this difference is most pronounced in the process of pigment photodestruction. The data obtained show that the luminescent spectral... |
| Tipo: Journal Contribution |
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| Ano: 1979 |
URL: http://10.0.0.194:8080/dspace/handle/99011/3761 |
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| Георгиева Л. В.. |
| Primary production was measured on the surface of certain regions of the Mediterranean basin and Atlantic ocean. The values of the production varied within three orders. They were the least in the open regions of the Mediterranean sea and in the sinking zone of the South Atlantic anticyclonic circulation waters. High levels of photosynthesis in the Mediterranean sea were observed in the regions affected by the Straights of Gibraltar and Bosporus and in the Atlantic Ocean in the upwelling and frontal zones. |
| Tipo: Journal Contribution |
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| Ano: 1979 |
URL: http://10.0.0.194:8080/dspace/handle/99011/3719 |
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| Кирюхина Л. Н.. |
| Hydrocarbon composition of bottom sediments was studied in some bays in the south-western part of Crimea. The content of bitumoids in mud influenced by anthropogenic factor is one-two orders higher than that in the open sea sediments. Oils predominate in the bitumoids of the littoral mud. Their amount is three times as high as compared to bitumoids in the open sea. Oil accumulation is accompanied by the concentration of methane-naphthene hydrocarbons and decrease of heterocyclic hydrocarbons. Alkanes, both normal and isoprenoid, appear to be ten times as high in such sediments as in those of the open littoral zone. Pristane and phytane account for a third of isoprenoids. |
| Tipo: Journal Contribution |
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| Ano: 1979 |
URL: http://10.0.0.194:8080/dspace/handle/99011/3732 |
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| Павловская Т. В.. |
| Quantitative changes in the consumption rate and efficiency of assimilating a mixture of food organisms (unicellular algae, phytogenis detritus, Artemia fry) are considered as dependent on the age of Euchaeta marina. The nutrition type in the animal ontogenesis is shown to change from the filtration to predatory one mainly. The assimilation efficiency was determined by the type of the offered food: vegetable food resulted in high and constant values (86.2-94.1%), whereas the animal food increased (from 26.5 to 62.0%) and the detritus decreased them (from 89.2 to 58.1%) from fry to adults. |
| Tipo: Journal Contribution |
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| Ano: 1979 |
URL: http://10.0.0.194:8080/dspace/handle/99011/3723 |
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| Колесникова Е. А.. |
| Daily changes in the meiobenthos number on the cystozira thallus were studied by means of the sampler of a special design. Significant changes were found in the number of meiobenthos organisms for a day along the whole thallus and in storeys, which evidences for the presence of daily migrations in the meiobenthos organisms inhabiting cystozira thickets. |
| Tipo: Journal Contribution |
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| Ano: 1979 |
URL: http://10.0.0.194:8080/dspace/handle/99011/3695 |
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| Сергеева Н. Г.; Бенжицкий А. Г.. |
| Seven petroleum aggregates (of 30 mm diameter) caught in the East Atlantic region are found to contain 81 specimens of free-living nematodes. 80 of them belong to the Chromadarina cf. laeta (de Man 1876) Mic. 1924 species, one belongs to Camacolaimus sp. Ch. cf. laeta is represented by juvenile and puberal forms (males and females). Detection of considerable number of nematodes shows that inside the petroleum aggregate there exist rather favourable living conditions for eurybiont species. This group of organisms is likely to utilize petroleum aggregates not only as a substrate but is able to actively digest their organic components. |
| Tipo: Journal Contribution |
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| Ano: 1979 |
URL: http://10.0.0.194:8080/dspace/handle/99011/3743 |
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| Виноградова Н. И.; Щербакова Л. И.. |
| Two methods are recommended for estimating a relative biological activity of poisons used for creating nonfouled compositions in a series of solutions of the known concentration: a) determination of percentage of water fleas death for a definite period time since the beginning of the experiment (2-3 hr for fresh water and up to 8 hr for water with 6% salinity); b) determination of time for death of 50% of water fleas: the experiment duration in fresh water is not more than 4 hr, in water with 6% salinity not more than 10 hr. |
| Tipo: Journal Contribution |
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| Ano: 1979 |
URL: http://10.0.0.194:8080/dspace/handle/99011/3701 |
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| Registros recuperados: 1.708 | |
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