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Associating particulate essential fatty acids of the ?3 family with phytoplankton species composition in a Siberian reservoir / N. N. Sushchik [et al.] // Freshwater Biology. - 2004. - Vol. 49, Is. 9. - P1206-1219, DOI 10.1111/j.1365-2427.2004.01263.x . - ISSN 0046-5070
Кл.слова (ненормированные):
Cyanobacteria -- Diatoms -- Fatty acids -- Food quality -- Species composition -- cyanobacterium -- diatom -- fatty acid -- food quality -- food web -- growing season -- phytoplankton -- reservoir -- Eurasia -- Siberia -- Anabaena -- Anabaena flos-aquae -- Aphanizomenon -- Aphanizomenon flos-aquae -- Bacillariophyta -- Cyanobacteria -- Cyclotella -- Dinophyceae -- Flos -- Microcystis -- Microcystis aeruginosa -- Planktothrix -- Planktothrix agardhii -- Stephanodiscus
Аннотация: 1. We studied variation in the composition of fatty acids in the seston of a small freshwater reservoir with changes in phytoplankton composition during four growth seasons. We focused on the dynamics of the ?3 fatty acids because of their potential importance for zooplankton nutrition. 2. Total diatoms were related to the 20:5?3 fatty acid (eicosapentaenoic, EPA) content in seston. Among two dominant diatom genera, Cyclotella was not associated with EPA content. In contrast, there was a significant correlation between Stephanodiscus and the percentage contribution and content of EPA throughout the study. Hence, freshwater diatoms can differ strongly in content of the essential EPA. 3. We considered abundant cyanobacteria as a potential source of 18:3?3 fatty acid (linolenic, ALA) to aquatic food webs. Among four dominant cyanobacteria species, two (Anabaena flos-aquae and Planktothrix agardhii) showed significant correlation with the ALA content of the seston, while the other two (Aphanizomenon flos-aquae and Microcystis aeruginosa) did not. 4. Dinophyta had a relatively high level of 22:6?3 (docosahexaenoic, DHA) for freshwater species and can be also a source of EPA to aquatic food webs. 5. Our results show that various species of diatoms as well as cyanobacteria can be of contrasting nutritional value for zooplankton because of their different content of the essential PUFAs. Diatoms, which are low in EPA, could not be considered as a valuable food, while some field populations of cyanobacteria might be valuable sources of essential ALA.

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

Доп.точки доступа:
Sushchik, N.N.; Gladyshev, M.I.; Makhutova, O.N.; Kalachova, G.S.; Kravchuk, E.S.; Ivanova, E.A.

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^a341.29.15.15.25^2VINITI
В 58

Влияние зоопланктона на интенсивность "цветения" малых эвтрофных водоемов [Текст] : научное издание / В. И. Колмаков [и др.] // 5 Всероссийская конференция по водным растениям "Гидроботаника 2000", Борок, 10-13 окт., 2000. - Борок, 2000. - С. 36-37

ГРНТИ

34.29.15

РУБ 341.29.15.15.25
Рубрики:
ФИТОПЛАНКТОН
   РАЗВИТИЕ
   ЗООПЛАНКТОН
   ВЛИЯНИЕ
Аннотация: Изучали водорослевые спектры питания Daphnia longispina O. F. Muller (Crustacea, Cladocera), доминантного вида зоопланктона пруда Бугач, в периоды "цветения" воды. Для этого использован дифференциально-проточный метод в сочетании с флуоресцентным анализом, позволяющим регистрировать популяционный рост. Мелководья Шекснинского и Волжского плесов характеризовались близкими величинами численности (8336'+-'6183 и 5505'+-'8358 кл./мл) и биомассы (8,4'+-'7,0 и 6,5'+-'9,2 мг/м{3}) АПП. В этих плесах отмечены клетки наибольшего объема - 1,15 и 2,23 мкм{3}, численность к-рых была минимальной. Так, в Волжском плесе численность клеток объемом 4,19 мкм{3} составляла лишь 187 кл./мл. В составе АПП повсеместно встречались мелкие одиночные клетки и колонии, включающие от 13 до 1400 клеток. Пространственное распределение и тех, и других по акватории водохранилища было сходным, средняя численность колебалась от 13 349'+-'12 971 на станциях центральной части Главного плеса до 337 036'+-'433 688 кл/мл в приплотинном участке. D. longispina не потребляла вызывающих "цветение" Aphanizomenon flos-aquae (L.) Ralfs и Microcystis aeruginosa (Kutz.) emend Elenk. При массовом развитии A. flos-aquae дафния исключала микроводоросли из своего рациона, а при вегетации M. aeruginosa избирательно потребляла Cryptomonas erosa Ehr и Cyclotella comta Kutz. Стимулирующего влияния экскреторных и интактных выделений D. longispina на фотосинтетическую активность синезеленых водорослей не обнаружено
: 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Колмаков, В.И.; Гладышев, М.И.; Дубовская, О.П.; Левин, Л.А.; Гаевский, Н.А.; Иванова, Е.А.

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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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Associating particulate essential fatty acids of the omega 3 family with phytoplankton species composition in a Siberian reservoir [Text] / N. N. Sushchik [et al.] // Freshw. Biol. - 2004. - Vol. 49, Is. 9. - P. 1206-1219, DOI 10.1111/j.1365-2427.2004.01263.x. - Cited References: 48 . - ISSN 0046-5070

РУБ Marine & Freshwater Biology
Рубрики:
ENCLOSED EXPERIMENTAL ECOSYSTEM
   FOOD QUALITY
   BENTHIC INVERTEBRATES
   GREEN-ALGAE
   CYANOBACTERIA
   DAPHNIA
   MICROALGAE
   ZOOPLANKTON
   LAKE
   APHANIZOMENON
Кл.слова (ненормированные):
cyanobacteria -- diatoms -- fatty acids -- food quality -- species composition
Аннотация: 1. We studied variation in the composition of fatty acids in the seston of a small freshwater reservoir with changes in phytoplankton composition during four growth seasons. We focused on the dynamics of the omega3 fatty acids because of their potential importance for zooplankton nutrition. 2. Total diatoms were related to the 20:5omega3 fatty acid (eicosapentaenoic, EPA) content in seston. Among two dominant diatom genera, Cyclotella was not associated with EPA content. In contrast, there was a significant correlation between Stephanodiscus and the percentage contribution and content of EPA throughout the study. Hence, freshwater diatoms can differ strongly in content of the essential EPA. 3. We considered abundant cyanobacteria as a potential source of 18:3omega3 fatty acid (linolenic, ALA) to aquatic food webs. Among four dominant cyanobacteria species, two (Anabaena flos-aquae and Planktothrix agardhii) showed significant correlation with the ALA content of the seston, while the other two (Aphanizomenon flos-aquae and Microcystis aeruginosa) did not. 4. Dinophyta had a relatively high level of 22:6omega3 (docosahexaenoic, DHA) for freshwater species and can be also a source of EPA to aquatic food webs. 5. Our results show that various species of diatoms as well as cyanobacteria can be of contrasting nutritional value for zooplankton because of their different content of the essential PUFAs. Diatoms, which are low in EPA, could not be considered as a valuable food, while some field populations of cyanobacteria might be valuable sources of essential ALA.

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

Доп.точки доступа:
Sushchik, N.N.; Gladyshev, M.I.; Makhutova, O.N.; Kalachova, G.S.; Kravchuk, E.S.; Ivanova, E.A.

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Analysis of Diatoms of the Water Column and Bottom Sediments of Lake Shira (Khakassia, Russia) [Text] / G. Bolobanschikova, D. Rogozin // Acta Geol. Sin.-Engl. Ed. - 2014. - Vol. 88. - P56-57, DOI 10.1111/1755-6724.12266_6. - Cited References:6 . - ISSN 1000-9515. - ISSN 1755-6724

РУБ Geosciences, Multidisciplinary

Кл.слова (ненормированные):
paleolimnology -- meromictic lake -- sedimentation -- diatoms -- Cyclotella -- choctawhatcheeana -- Aulacoseira valida -- Aulocoseira ambigua

WOS
Держатели документа:
RAS, Siberian Branch, Inst Biophys, Krasnoyarsk 660036, Russia.
ИБФ СО РАН

Доп.точки доступа:
Bolobanschikova, Galina; Rogozin, Denis

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Analysis of diatom algae from the water column and bottom sediments of Shira Lake (Khakassia, Russia) [Text] / G. N. Bolobanschikova [et al.] // Contemp. Probl. Ecol. - 2015. - Vol. 8, Is. 2. - P173-185, DOI 10.1134/S1995425515020031. - Cited References:21. - This work was supported by Russian Foundation for Basic Research, project no. 13-05-00429-a and the Biodiversity Program for Basic Research, Russian Academy of Sciences, project no. 30.8. . - ISSN 1995-4255. - ISSN 1995-4263

РУБ Ecology

Кл.слова (ненормированные):
paleolimnology -- diatom algae -- meromictic lake -- sedimentation -- Cyclotella -- choctawhatcheeana -- Aulacoseira valida -- Aulacoseira ambigua
Аннотация: Lake Shira as a meromictic lake is object of interest for paleolimnological studies. In May 2011 core samples were collected from the bottom of Lake Shira and the species composition of diatom algae, which serve as bioindicators of the state of the lake, were studied. In addition, in 2012, seasonal water samples and material from sediment traps were collected and the species composition of diatoms in them was analyzed. The results of the analysis showed that the lake, like in previous years of research, was dominated by Cyclotella choctawhatcheeana Prasad. Diatoms were found twice in the studied core above the white carbonate layers and were absent in other layers. The species living in the lake at present were observed down to the first white carbonate layer, including the predominant Cyclotella choctawhatcheeana. This fact presumably proves the consistency of the species composition of diatoms and the overall stable condition of the lake since 1946 (Rogozin et al., 2005). Down to the second white carbonate layer, the dominant species were Aulcosira valida (Grunow) Krammer and Aulcosira italica (Grunow) Simonsen. Nitzchia sigmodea (Nitzsch) W. Smith and Fragilaria construens var. venter (Ehrenberg) Grunow were also observed at these depths, dating approximately to 1655-1690. These are freshwater species that belong to the diatoms of arctic, alpine, and temperate latitudes, which develop in shallow waters under moderate temperature conditions. This fact suggests that Lake Shira was less salty in the middle and end of the 17th century than today.

WOS
Держатели документа:
Russian Acad Sci, Inst Biophys, Siberian Branch, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Limnol Inst, Siberian Branch, Irkutsk 664033, Russia.
Krasnoyarsk State Med Univ, Krasnoyarsk 660022, Russia.
Russian Acad Sci, Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Bolobanschikova, G. N.; Rogozin, D. Yu.; Firsova, A. D.; Rodionova, E. V.; Degermendzhy, N. N.; Shabanov, A. V.; Russian Foundation for Basic Research [13-05-00429-a]; Biodiversity Program for Basic Research, Russian Academy of Sciences [30.8]

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