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Толомеев, Александр Павлович.
Действие солнечной радиации на вертикальные миграции Arctodiaptomus salinus и Brachionus plicatilis в озере Шира [Текст] : научное издание / А. П. Толомеев, Е. С. Задереев // Биология внутренних вод. - 2003. - № : 2. - С. 74-79 . - ISSN 0869-5652

ГРНТИ

34.33.15

Рубрики:
ВОДНЫЕ ЭКОСИСТЕМЫ
ОЗЕРО ШИРА
Аннотация: В солоноватом озере Шира исследованы дневное и ночное вертикальные распределения зоопланктона. Отсутствие в озере планктоноядных рыб предполагает рассмотрение интенсивной солнечной радиации в качестве одного из ключевых факторов, определяющих снижение численности зоопланктона в верхних горизонтах озера в дневное время.

Держатели документа:
Институт биофизики СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Задереев, Егор Сергеевич

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Growth of dominant zooplankton species feeding on plankton microflora in Lake Shira / T. A. Temerova, A. P. Tolomeyev, A. G. Degermendzhy // Aquatic Ecology. - 2002. - Vol. 36, Is. 2. - P235-243, DOI 10.1023/A:1015607304508 . - ISSN 1386-2588
Кл.слова (ненормированные):
Arctodiaptomus salinus -- Brachionus plicatilis -- Life history -- Reproduction -- Specific growth rate -- diet -- food limitation -- growth rate -- life history -- reproduction -- saline lake -- zooplankton -- Russian Federation -- algae -- Arctodiaptomus -- Bacteria (microorganisms) -- Brachionus -- Brachionus plicatilis -- Calanoida -- Copepoda -- Cyanobacteria -- Invertebrata -- Rotifera
Аннотация: Batch cultures and continuous flow cultures were used to study the growth rates of zooplankton species from Shira lake, the rotifer Brachionus plicatilis Muller and calanoid copepod Arctodiaptomus salinus Daday, which were fed on phytoplankton and bacterioplankton from the lake. Analyses of the birth and survival rates were used to demonstrate that the lake phytoplankton, consisting mostly of cyanobacteria and diatomaceous algae, is inadequotes for optimal realisation of the reproductive potential of B. plicatilis when compared with the bacterial diet. The study revealed that the kinetic growth characteristics of the two zooplankters were similar: B. plicatilis rmax, 0.120 d-1; S0, 0.253; and Ks, 0.114 mg dry mass l-1; and for A. salinus rmax, 0.129 d-1; S0, 0.240; and Ks, 0.171 mg dry mass l-1. Fluctuations in natural food concentration reduced the growth rate of both species. Even though the threshold concentration of food for B. plicatilis and A. salinus were quite similar, the copepods were less sensitive to food limitation.

Scopus
Держатели документа:
Institute of Biophysics of SB RAS, Krasnoyarsk 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Temerova, T.A.; Tolomeyev, A.P.; Degermendzhy, A.G.

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Infochemical-mediated trophic interactions between the rotifer Brachionus calyciflorus and its food algae / A. M. Verschoor, Y. S. Zadereev, W. M. Mooij // Limnology and Oceanography. - 2007. - Vol. 52, Is. 5. - P2109-2119 . - ISSN 0024-3590
Кл.слова (ненормированные):
alga -- aquatic ecosystem -- assimilation efficiency -- experimental study -- feeding behavior -- food web -- freshwater environment -- ingestion rate -- trophic interaction -- algae -- Brachionus calyciflorus -- Rotifera -- Scenedesmus -- Scenedesmus obliquus
Аннотация: We studied how chemicals obtained as filtrates from algal monocultures (algal chemicals) and from rotifer cultures with or without algae (rotifer chemicals) affected feeding rates of the rotifer Brachionus calyciflorus on its food algae, both directly and indirectly (through chemical-induced changes in algal morphology). Algal chemicals had a strong stimulating effect on the feeding rate of B. calyciflorus, but these effects were counteracted by rotifer chemicals. In functional response experiments, rotifer chemicals lowered maximum ingestion rates and had strong effects on assimilation rates and assimilation efficiencies of B. calyciflorus, probably due to the release of unspecific (auto)toxic metabolites. Furthermore, rotifer chemicals induced colony formation in the food alga Scenedesmus obliquus. Above the optimum particle size for ingestion by B. calyciflorus, larger algal colony sizes increased the food-handling time, thus lowering ingestion and assimilation rates. Through their effects on trophic interactions, infochemicals may play a role in structuring and the functioning of aquatic food webs. В© 2007, by the American Society of Limnology and Oceanography, Inc.

Scopus
Держатели документа:
Netherlands Institute of Ecology (NIOO-KNAW), Centre for Limnology, Rijksstraatweg 6, 3631 AC Nieuwersluis, Netherlands
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, 660036 Krasnoyarsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Verschoor, A.M.; Zadereev, Y.S.; Mooij, W.M.

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The vertical distribution of zooplankton in brackish meromictic lake with deep-water chlorophyll maximum / Y. S. Zadereev, A. P. Tolomeyev // Hydrobiologia. - 2007. - Vol. 576, Is. 1. - P69-82, DOI 10.1007/s10750-006-0294-x . - ISSN 0018-8158
Кл.слова (ненормированные):
Anoxic hypolimnion -- Deep water chlorophyll maximum -- Meromictic lake -- Stratification -- Vertical distribution -- Zooplankton -- Algae -- Chlorophyll -- Growth kinetics -- Lakes -- Saline water -- Anoxic hypolimnion -- Deep water chlorophyll maximum -- Meromictic lake -- Stratification -- Vertical distribution -- Zooplanktons -- Biodiversity -- biomass -- brackish water -- chlorophyll -- green alga -- meromictic lake -- reproduction -- stratification -- vertical distribution -- zooplankton -- Eurasia -- Khakassia -- Lake Shira -- Russian Federation -- Arctodiaptomus salinus -- Brachionus plicatilis -- Chlorophyta -- Copepoda -- Hexarthra oxiuris -- Rotifera
Аннотация: We examined the dynamics of the vertical stratification of physical, chemical and biological factors in a brackish meromictic lake with a deep-water chlorophyll maximum (Shira Lake, Russia, Khakasia) during the growing season and estimated how the vertical distribution of these factors influences the vertical distribution of the zooplankton community. The vertical distribution of zooplankton was restricted by the anoxic hypolimnion. Nauplii and younger copepodides (C1-C3) of the copepod, Arctodiaptomus salinus, and the rotifer, Brachionus plicatilis, were found in the upper warm waters. During summer stratification the maximum of A. salinus biomass, which consisted mainly of older copepodides (C4-C5) and females, was associated with the deep-water maximum of biomass of green algae, which are the preferred diet for this species. The vertical distribution of the rotifer Hexarthra oxiuris was bimodal with numerical peaks in the epi- and hypolimnion. Reproduction peaks of dominant species were separated in time. The reproduction peak of A. salinus was at the beginning of summer when A. salinus constituted up to 99% of total zooplankton biomass. The development of rotifers was detected after the reproduction peak of A. salinus when the biomass of rotifers reached 50% of total zooplankton biomass. В© 2007 Springer Science+Business Media B.V.

Scopus
Держатели документа:
Institute of Biophysics SB RAS, Akademgorodok, Krasnoyarsk 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Zadereev, Y.S.; Tolomeyev, A.P.

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An in situ method for the investigation of vertical distributions of zooplankton in lakes: Test of a two-compartment enclosure / A. P. Tolomeyev, Y. S. Zadereev // Aquatic Ecology. - 2005. - Vol. 39, Is. 1-2. - P181-188, DOI 10.1007/s10452-004-5732-0 . - ISSN 1386-2588
Кл.слова (ненормированные):
Anoxic hypolimnion -- Solar radiation -- Stratified lake -- Vertical migration -- Zooplankton -- biotic factor -- enclosure experiment -- lake ecosystem -- physicochemical property -- vertical distribution -- zooplankton -- Animalia -- Arctodiaptomus salinus -- Brachionus plicatilis
Аннотация: Two-section enclosures were designed for the investigation of the effect of various physicochemical and biological factors on vertical distribution of zooplankton in situ. The framework of the enclosure was a cylindrical polyethylene column without any partitions inside, in which the isolation of animals in different sections after in situ exposure was achieved by pinching the flexible central part of the column. Enclosures were tested at the brackish stratified meromictic Lake Shira (Russia, Khakasia). The absence of fish and carnivorous zooplankton in the lake suggests that the vertical distribution of zooplankton is mainly determined by physicochemical gradients in the water column. Experiments and field observations demonstrated that all age and size groups of Arctodiaptomus salinus and Brachionus plicatilis strongly avoided surface layers during the daylight. The escape of zooplankton from the anoxic hypolimnion was less active. Statistically significant avoidance was observed only for copepodites C4-C5 and females of A. salinus. The relatively simple construction of the columns and easy handling during the experiment were the factors that favoured the use of this device to perform in situ basic tests of the effect of different factors on the vertical distribution of zooplankton. В© Springer 2005.

Scopus
Держатели документа:
Institute of Biophysics SB RAS, Akademgorodok, 660036, Krasnoyarsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Tolomeyev, A.P.; Zadereev, Y.S.

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Lake Shira, a Siberian salt lake: Ecosystem structure and function. 1. Major physico-chemical and biological features / T. A. Zotina, A. P. Tolomeyev, N. N. Degermendzhy // International Journal of Salt Lake Research. - 1999. - Vol. 8, Is. 3. - P211-232, DOI 10.1023/A:1009030120324 . - ISSN 1037-0544
Кл.слова (ненормированные):
Bacterioplankton -- Blue-green algae -- Meromictic salt lake -- Phytoplankton -- Vertical structure -- Zooplankton -- community composition -- ecosystem function -- ecosystem structure -- migration -- relative abundance -- saline lake -- vertical distribution -- Russian Federation -- Arctodiaptomus salinus -- Brachionus plicatilis -- Cyclotella tuberculata -- Dictyosphaerium tetrachotomum -- Hexarthra oxiuris -- Lyngbya contorta -- Microcystis ichtyoblabe
Аннотация: The specific composition, vertical distribution and daily migration of plankton in a meromictic salt lake, Lake Shira, have been investigated. The main structural components of the ecosystem are bacteria, algae and crustaceans. Since the late 1970s, blue-green algae are reported as dominant. Nowadays the phytoplankton is dominated by Lyngbya contorta, Microcystis ichtyoblabe (Cyanophyta), Cyclotella tuberculata (Bacillariophyta) and Dictyosphaerium tetrachotomum (Chlorophyta). The zooplankton of Lake Shira comprises Arctodiaptomus salinus (Copepoda), Brachionus plicatilis and Hexarthra oxiuris (Rotatoria). Investigation revealed a stratified vertical distribution of all dominant species except Cyclotella with a maximum at a depth of 12-15 m during the summer growth period. Zooplanktons differ in the pattern of distribution and daily migration, but most zooplankton tend to concentrate near the surface. The possible reasons for the vertical distribution of the plankton are discussed.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Akademgorodok, 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Zotina, T.A.; Tolomeyev, A.P.; Degermendzhy, N.N.

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Lake Shira, a Siberian salt lake: Ecosystem structure and function. 2. Brachionus plicatilis (rotatoria) growth and development / T. A. Temerova, A. G. Degermendzhy, A. P. Tolomeyev // International Journal of Salt Lake Research. - 1999. - Vol. 8, Is. 3. - P233-244, DOI 10.1023/A:1009001908937 . - ISSN 1037-0544
Кл.слова (ненормированные):
Brachionus plicatilis -- Growth rate -- Reproduction -- Simulation model -- Trophic conditions -- growth -- ontogeny -- saline lake -- trophic conditions -- zooplankton -- Russian Federation -- Brachionus plicatilis -- Chlorella vulgaris -- Rotifera
Аннотация: The growth and development of Brachionus plicatilis (Muller), a rotifer and one of the most abundant zooplankton species in Lake Shira, a saline lake at low temperature in the Republic of Khakassia, was studied in cultures at different trophic conditions. Growth indices were evaluated at natural (lake) concentrations of bacteria, Chlorella vulgaris, a microalga, and Candida utilis, a yeast. The negative effect on rotifer reproduction in the algal-bacterial community by blue-green algae was demonstrated. The ratio of ontogenetic periods was shown to be in accord with species and food concentration. Base values required to calculate B. plicatilis population simulation model parameters were defined.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Akademgodorok, 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Temerova, T.A.; Degermendzhy, A.G.; Tolomeyev, A.P.

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Competition between links in "producers-consumer" trophic chains in an aquatic closed system with spatially separated components / T. I. Pisman, N. S. Pechurkin, L. A. Somova // Advances in Space Research. - 2001. - Vol. 27, Is. 9. - P1599-1603, DOI 10.1016/S0273-1177(01)00255-1 . - ISSN 0273-1177
Кл.слова (ненормированные):
Algae -- Aquifers -- Biodiversity -- Metabolism -- Nitrogen -- Protozoa -- Aquatic closed systems -- Spatially separated components -- Space research -- aquatic ecosystem -- competition -- grazing -- primary production -- fresh water -- nitrogen -- animal -- article -- Chlorella -- food chain -- green alga -- metabolism -- microclimate -- Paramecium -- Rotifera -- Algae, Green -- Animals -- Chlorella -- Ecological Systems, Closed -- Food Chain -- Fresh Water -- Nitrogen -- Paramecium -- Rotifera
Аннотация: The work analyzes functioning of a "producer-consumer" closed aquatic system with spatially separated links, where each component consisted of two species. Producers in the system were the microalgae of Chlorella vulgaris and Scenedesmus sp., consumers - Paramecium caudatum infusoria and Brachionus sp. rotifers. In the experiment the competing predators were consuming on a mixed culture of algae, and the competition of algae was studied under nitrogen limitation. Under these conditions competitiveness of Scenedemus was higher than that of Chlorella vulgaris. Metabolism products of Scenedesmus algae have been found to have negative effect on reproduction of Paramecium caudatum protozoa. Predator population dynamics in the "consumer" link demonstrated that the rotifers that consume two algal species are more competitive compared to protozoa feeding on chlorella only. В© 2001 COSPAR. Published by Elsevier Science Ltd. All rights reserved.

Scopus
Держатели документа:
Institute of Biophysics, Krasnoyarsk 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Pisman, T.I.; Pechurkin, N.S.; Somova, L.A.

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An experimental study and a mathematical model of interactions in a mixed culture of invertebrates and algae in the Producer-Consumer aquatic biotic cycle [Текст] / T. I. Pisman, O. N. Bogdanova // Biofizika. - 2004. - Vol. 49, Is. 6. - С. 1112-1117. - Cited References: 22 . - ISSN 0006-3029

РУБ Biophysics
Рубрики:
PREY
Кл.слова (ненормированные):
mixed culture -- invertebrates -- algae -- metabolic products
Аннотация: An experimental investigation was carried out, and a mathematical model of interaction between invertebrates (infusoria Paramecium caudatum and rotifera Brachionus plicatilis) and algae (Chlorella vulgaris and S enedesmus quadricauda) in the <> aquatic biotic cycle with spatially divided links was constructed. The model describes the dynamics of a mixed culture of infusoria and rotifera in the <> link, when they consume a mixed culture of algae coming from the <> link. A negative influence of products of algae Scenedesmus metabolism upon the reproduction of infusoria P. caudatum was revealed. Taking this into account, a qualitative coincidence of the results of mathematical modeling with experimental data was obtained. It was shown that the co-existence of mixed algae culture in the <> link with invertebrates in the <> link in the <> aquatic biotic cycle is impossible because of the displacement of infusoria P. caudatum by rotifera Brachionus plicatilis.

Держатели документа:
Russian Acad Sci, Inst Biophys, Siberian Div, Krasnoyarsk 660036, Russia
Krasnoyarsk State Univ, Krasnoyarsk 660041, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Pisman, T.I.; Bogdanova, O.N.

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10.

Experimental and mathematical model of the interactions in the mixed culture of links in the "producer-consumer" cycle [Text] / T. I. Pisman // Adv. Space Res. - 2009. - Vol. 44, Is. 2. - P177-183, DOI 10.1016/j.asr.2009.01.022. - Cited References: 20. - This study is supported by the grant of Russia Foundational Research Foundation and Krasnoyarsk Regional Science Foundation No. 07-05-96807. . - ISSN 0273-1177

РУБ Astronomy & Astrophysics + Geosciences, Multidisciplinary + Meteorology & Atmospheric Sciences
Рубрики:
COMPETITION
Кл.слова (ненормированные):
Competition -- Metabolite interaction -- Invertebrates -- Mixed culture
Аннотация: The paper presents a experimental and mathematical model of interactions between invertebrates (the ciliates Paramecium caudatum and the rotifers Brachionus plicatilis) in the "producer-consumer" aquatic biotic cycle with spatially separated components. The model describes the dynamics of the mixed culture of ciliates and rotifers ill the "consumer" component, feeding on the mixed algal culture of the "producer" component. It has been found that metabolites of the algae Seenedesmus produce an adverse effect on the reproduction of the ciliates P. caudatum. Taking into account this effect, the results of investigation of the mathematical model were in qualitative agreement with the experimental results. In the "producer-consumer" biotic cycle it was shown that coexistence is impossible ill the mixed culture of invertebrates of the "consumer" component. The ciliates P. caudatum are driven out by the rotifers B. plicatilis. (C) 2009 Published by Elsevier Ltd on behalf of COSPAR.

Держатели документа:
RAS, SB, Inst Biophys, Krasnoyarsk 660036, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Pisman, T.I.; Russia Foundational Research Foundation and Krasnoyarsk Regional Science Foundation [07-05-96807]

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11.

Competition between links in "producer-consumer" trophic chains in an aquatic closed system with spatially separated components [Text] / T. I. Pisman, N. S. Pechurkin, L. A. Somova ; ed. n, NS Pechur // SPACE LIFE SCIENCES: CLOSED ECOLOGICAL SYSTEMS: EARTH AND SPACE APPLICATIONS. Ser. ADVANCES IN SPACE RESEARCH : ELSEVIER SCIENCE BV, 2001. - Vol. 27: F4 4 Symposium of COSPAR Scientific Commission F held at the 33rd COSPAR Scientific Assembly (JUL, 2000, WARSAW, POLAND), Is. 9. - P. 1599-1603, DOI 10.1016/S0273-1177(01)00255-1. - Cited References: 13 . - ISBN 0273-1177

РУБ Engineering, Aerospace + Astronomy & Astrophysics + Geosciences, Multidisciplinary + Meteorology & Atmospheric Sciences

Аннотация: The work analyzes functioning of a "producer-consumer" closed aquatic system with spatially separated links, where each component consisted of two species. Producers in the system were the microalgae of Chlorella vulgaris and Scenedesmus sp., consumers - Paramecium caudatum infusoria and Brachionus sp. rotifers. In the experiment the competing predators were consuming on a mixed culture of algae, and the competition of algae was studied under nitrogen limitation. Under these conditions competitiveness of Scenedesmus was higher than that of Chlorella vulgaris. Metabolism products of Scenedesmus algae have been found to have negative effect on reproduction of Paramecium caudatum protozoa. Predator population dynamics in the "consumer" link demonstrated that the rotifers that consume two algal species are more competitive compared to protozoa feeding on chlorella only. (C) 2001 COSPAR. Published by Elsevier Science Ltd. All rights reserved.

WOS
Держатели документа:
Inst Biophys, Krasnoyarsk 660036, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Pisman, T.I.; Pechurkin, N.S.; Somova, L.A.; Pechur, n, NS \ed.\

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12.

Competition between populations in the consumer-producer trophic chain in a closed aquatic system [Text] / T. I. Pisman // Russ. J. Ecol. - 2003. - Vol. 34, Is. 4. - P. 267-270, DOI 10.1023/A:1024549916165. - Cited References: 17 . - ISSN 1067-4136

РУБ Ecology

Кл.слова (ненормированные):
producer -- consumer -- competition -- ecosystem
Аннотация: The functioning of a closed aquatic consumer-producer system with spatially separated links, with each link consisting of two species, is considered. Competition between the consumers (infusorians Paratnechan caudatum and rotifers Brachionus sp.) feeding on a mixed algal culture (Chlorella vulgaris and Scenedesmus sp.) and competition between these algae under conditions of limited nitrogen supply are analyzed. It is shown that Scenedesmus algae have an advantage over C. vulgaris in terms of competitiveness, and their metabolic products have an adverse effect on reproduction in infusorians.

WOS
Держатели документа:
Russian Acad Sci, Siberian Div, Inst Biophys, Krasnoyarsk 660036, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Pisman, T.I.

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13.

A mathematical model of the interactions in the mixed culture of invertebrates and algae in the "producer-consumer" aquatic biotic cycle [Text] / T. I. Pisman, O. N. Bogdanova // Aquat. Ecol. - 2004. - Vol. 38, Is. 3. - P. 415-423. - Cited References: 19 . - ISSN 1386-2588

РУБ Ecology + Limnology + Marine & Freshwater Biology
Рубрики:
RESOURCE COMPETITION
Кл.слова (ненормированные):
competition -- metabolite interaction -- principle of competitive exclusion
Аннотация: This paper presents a mathematical model of interactions between two herbivorous invertebrates (ciliate Paramecium caudatum and rotifer Brachionus plicatilis) and two planktonic algae (Chlorella vulgaris and Scenedesmus quadricauda) spatially segregated in two compartments of a chemostat - type experimental microcosm system. The model mimics a "producer-consumer" aquatic biotic cycle, describing the dynamics of the mixed culture of ciliates and rotifers, as "consumer" compartment, feeding on the mixed algal culture, as "producer" compartment, under N-limiting conditions. We experimentally found that metabolites of the alga Scenedesmus produce an adverse effect on the reproduction of ciliate Paramecium. Taking this effect into account improved the behavior of the model, the results of which came into qualitative agreement with the experimental results. Both our experimental and modeling approaches demonstrated that, even in conditions of a spatially - segregated "producer-consumer" biotic cycle, species coexistence is impossible either in the mixed algal culture or in the mixed invertebrate culture. Scenedesmus excluded Chlorella, whereas Brachionus excluded Paramecium.

WOS
Держатели документа:
Inst Biophys SB RAS, Krasnoyarsk 660036, Russia
Krasnoyarsk State Univ, Krasnoyarsk 660041, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Pisman, T.I.; Bogdanova, O.N.

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14.

An in situ method for the investigation of vertical distributions of zooplankton in lakes: test of a two-compartment enclosure [Text] / A. P. Tolomeyev, Y. S. Zadereev // Aquat. Ecol. - 2005. - Vol. 39, Is. 2. - P. 181-188, DOI 10.1007/s10452-004-5732-0. - Cited References: 21 . - ISSN 1386-2588

РУБ Ecology + Limnology + Marine & Freshwater Biology
Рубрики:
MIGRATION
   DAPHNIA
   RADIATION
   COPEPODS
   EXPOSURE
   PATTERNS
   LIGHT
Кл.слова (ненормированные):
anoxic hypolimnion -- solar radiation -- stratified lake -- vertical migration -- zooplankton
Аннотация: Two-section enclosures were designed for the investigation of the effect of various physicochemical and biological factors on vertical distribution of zooplankton in situ. The framework of the enclosure was a cylindrical polyethylene column without any partitions inside, in which the isolation of animals in different sections after in situ exposure was achieved by pinching the flexible central part of the column. Enclosures were tested at the brackish stratified meromictic Lake Shira (Russia, Khakasia). The absence of fish and carnivorous zooplankton in the lake suggests that the vertical distribution of zooplankton is mainly determined by physicochemical gradients in the water column. Experiments and field observations demonstrated that all age and size groups of Arctodiaptomus salinus and Brachionus plicatilis strongly avoided surface layers during the daylight. The escape of zooplankton from the anoxic hypolimnion was less active. Statistically significant avoidance was observed only for copepodites C4-C5 and females of A. salinus. The relatively simple construction of the columns and easy handling during the experiment were the factors that favoured the use of this device to perform in situ basic tests of the effect of different factors on the vertical distribution of zooplankton.

WOS
Держатели документа:
SB RAS, Inst Biophys, Krasnoyarsk 660036, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Tolomeyev, A.P.; Zadereev, Y.S.

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15.

Effect of chemical interactions on the diapause induction in zooplankton [Text] / Y. S. Zadereev ; ed. Acad Sci, Kirensky Inst Phys, Siberian Div, Aka Gorodok, Krasnoyarsk 660036, Russia Russi // International Association of Theoretical and Applied Limnology, Vol 29, Pt 1, Proceedings. Ser. INTERNATIONAL ASSOCIATION OF THEORETICAL AND APPLIED LIMNOLOGY - PROCEEDINGS : E SCHWEIZERBART'SCHE VERLAGSBUCHHANDLUNG, 2005. - Vol. 29: 29th Congress of the International-Association-of-Theoretical-and-Applied-Limnology (AUG 08-14, 2004, Lahti, FINLAND). - P. 227-230. - Cited References: 24 . - ISBN 0368-0770. - ISBN 3-510-54065-4

РУБ Limnology
Рубрики:
PREDATOR-INDUCED DIAPAUSE
   BRACHIONUS-PLICATILIS
   DAPHNIA-MAGNA
   REPRODUCTION
   CLADOCERA
   REDUCTION
   CRUSTACEA
   DENSITY
   GROWTH
   PULEX
Кл.слова (ненормированные):
embryonic diapause -- density dependence -- predator avoidance -- chemical interactions

WOS
Держатели документа:
RAS, SB, Inst Biophys, Krasnoyarsk 660036, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Zadereev, Y.S.; Russi, Acad Sci, Kirensky Inst Phys, Siberian Div, Aka Gorodok, Krasnoyarsk 660036, Russia \ed.\

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