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Non-predatory mortality indices of cladoceran zooplankton in the pelagial and littoral of a shallow meso-eutrophic lake / O. P. Dubovskaya [et al.] // Doklady Biological Sciences. - 2007. - Vol. 416, Is. 1-6. - P391-393, DOI 10.1134/S0012496607050201 . - ISSN 0012-4966
Кл.слова (ненормированные):
animal -- article -- biological model -- ecology -- ecosystem -- environment -- growth, development and aging -- metabolism -- physiology -- river -- Russian Federation -- species difference -- zooplankton -- Animals -- Ecology -- Ecosystem -- Environment -- Models, Biological -- Rivers -- Russia -- Species Specificity -- Zooplankton

Scopus
Держатели документа:
Institute of Biophysics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
Institute of Zoology, Belarussian Academy of Sciences, ul. F. Skoriny 27, Minsk 220072, Belarus
Siberian Federal University, Krasnoyarsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Dubovskaya, O.P.; Semenchenko, V.P.; Gladyshev, M.I.; Buseva, J.F.; Razlutskij, V.I.

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Impact of weather variability on spatial and seasonal dynamics of dissolved and suspended nutrients in water column of meromictic Lake Shira [Text] / E. S. Zadereev [et al.] // Contemp. Probl. Ecol. - 2014. - Vol. 7, Is. 4. - P384-396, DOI 10.1134/S199542551404012X. - Cited References: 25. - This work was performed with the partial support of the Siberian Branch of the Russian Academy of Sciences (SB RAS) Integration Project no. 56 and grant 13-05-00853 of the Russian Foundation for Basic Research. The work was performed using resources of the field station of the SB RAS Institute of Biophysics (IBP) at Shira Lake. We thank our colleagues from the SB RAS IBP Laboratory of Biophysics of Ecosystems for their friendly participation in joint field works at Shira Lake; Academician A. G. Degermendzhi for his support of research at the saline lakes of Khakassia; the research workers of the SB RAS IBP Analytical Laboratory for the analyses of water and seston samples; and we especially thank Dr. Denis Rogozin for arrangements and assistance in winter field trips to the lakes, as well as to an anonymous reviewer for his valuable comments. . - ISSN 1995-4255. - ISSN 1995-4263

РУБ Ecology
Рубрики:
CLIMATE-CHANGE
   STRATIFICATION
   PHOSPHORUS
   RUSSIA
   PHYTOPLANKTON
   SESTON
Кл.слова (ненормированные):
meromictic lake -- weather -- thermal stratification -- seston -- nutrients -- stoichiometric ratios
Аннотация: Depths of thermocline and the redox zone, concentrations of dissolved and suspended carbon, and nitrogen and phosphorus in seston were measured in the pelagial of the saline meromictic Lake Shira (southern Siberia) in different years (2007-2011); the relationship of the values for those parameters with air-temperature variations was assessed. Positive correlations between both air temperatures in the previous year and the depth of the redox zone in winter and air temperature in April and the thermocline depth in summer were revealed. In the mixolimnion, the ratio of total nitrogen to total phosphorus almost always exceeded the Redfield ratio (16: 1); seston deficiency both in nitrogen and phosphorus was monitored in different seasons and at various depths. The amount of seston in the mixolimnion in summer almost doubled the amount of seston in winter and was directly related with the depth of the thermocline. In the monimolimnion, seston was rich in nitrogen and phosphorus. The amount of seston in the monimolimnion varied in different years and depended both on the air temperature in the previous year and the size of the zone.

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Держатели документа:
[Zadereev, E. S.
Tolomeev, A. P.
Drobotov, A. V.
Kolmakova, A. A.] Russian Acad Sci, Siberian Branch, Inst Biophys, Krasnoyarsk 660036, Russia
[Zadereev, E. S.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Zadereev, E.S.; Tolomeev, A.P.; Drobotov, A.V.; Kolmakova, A.A.; Siberian Branch of the Russian Academy of Sciences (SB RAS) [56]; Russian Foundation for Basic Research [13-05-00853]

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STOICHIOMETRIC COMPOSITION OF SESTON IN LITTORAL AND PELAGIAL ZONES OF SHALLOW LAKE OBSTERNO (BELARUS) / Z. F. Buseva [и др.] // Dokl. Nat. Akad. Nauk Belarusi. - 2018. - Vol. 62, Is. 3. - С. 304-310, DOI 10.29235/1561-8323-2018-62-3-304-310. - Cited References:15. - This work was partially supported by the BRFFR (grant No. (sic)17-037). We thank for the collaboration with Narach Biological Station of Belarusian State University and thank it's Director Dr. T. V. Zhukova, scientific and technological staff -E. I. Lapitskaja and E. A. Zhuravliova for their fruitfull help. . - ISSN 1561-8323. - ISSN 2524-2431

РУБ Multidisciplinary Sciences
Рубрики:
NUTRIENT LIMITATION
   PHOSPHORUS
   NITROGEN
   ZOOPLANKTON
   CARBON
   MARINE
Кл.слова (ненормированные):
seston -- carbon -- nitrogen -- phosphorus -- stoichiometry -- littoral -- pelagial -- macrophyte beds
Аннотация: We estimated the seston elemental composition (C, N, P) and its ratio in pelagic and littoral zones of mesotrophic shallow Lake Obsterno during two contrasting seasons, as well as the influence of macrophyte beds on the seston stoichiometry. In the both pelagial and littoral zones in summer the C : N ratio was small, 4.62 and 7.05 respectively. But it increased slightly during autumn to 5.66 in pelagic samples against 8.33 in littoral ones. The large N : P ratio and the small phosphorus content specially in the macrophyte covered littoral zone equal to 57.7 in July against 22.47 in September suggest a high level of phosphorus limitation in the littoral locations as a possible mediated reason suppressing zooplankton abundance in summer. Our results in the both pelagial and littoral habitat showed a highly P limited situation in which the N : P ratio was larger in littoral with macrophyte than in pelagial zones. The obtained data of littoral seston stoichiometry were recorded for the first time and exceeded the classical Redfield ratio. The elemental imbalance between macrophyte covered littoral and pelagial suggest that nutrients, especially P, are more limiting in macrophyte beds in summer due to the resource competition between phytoplankton and macrophytes for nutrients, a poor food quality, low zooplankton abundance, as well as its poor taxon-specific elemental ratio in summer.

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Держатели документа:
Natl Acad Sci Belarus Bioresources, Sci & Pract Ctr, 27 Akad Skaya Str, Minsk 220072, BELARUS.
Naroch Biol Stn, Naroch, BELARUS.
Russian Acad Sci, Siberian Branch, Inst Biophys, 50-50 Akademgorodok Str, Krasnoyarsk 660036, Russia.
Naroch Biol Stn, Miadel Dist 220095, Minsk Region, BELARUS.

Доп.точки доступа:
Buseva, Zhanna F.; Farahani, Shabnam Bahman Gazerani; Veras, Yulia K.; Kolmakova, Anzhelika A.; Sushchik, Nadezhda N.; BRFFR [17-037]

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Green Tides: New Consequences of the Eutrophication of Natural Waters (Invited Review) / M. I. Gladyshev, Y. I. Gubelit // Contemp. Probl. Ecol. - 2019. - Vol. 12, Is. 2. - P109-125, DOI 10.1134/S1995425519020057. - Cited References:134. - This study was supported by a state task as part of fundamental research program of the Russian Federation no. VI. 51.1.9, no. 6.1504.2017/PCh, and no. AAAA-A19-119020690091-0. . - ISSN 1995-4255. - ISSN 1995-4263

РУБ Ecology
Рубрики:
CLADOPHORA-GLOMERATA CHLOROPHYTA
BENTHIC ALGAL COMMUNITY
MACROALGAL
Кл.слова (ненормированные):
nuisance algal blooms -- Ulva -- Cladophora -- Spirogyra -- metaphyton -- benthification
Аннотация: In recent decades, alongside the comparatively well-studied bloom caused by phytoplankton, a bloom of marine and fresh waters caused by littoral benthic macroalgae of three generaUlva, Cladophora, and Spirogyrahave become a global phenomenon. In the present review, an attempt is made to gain an understanding of why it is these taxa of green filamentous algae that start to grow rapidly in the spring in many water bodies and streams, including oligotrophic waters, and then float up from the bottom, forming floating mats (metaphyton); then their decaying masses are washed ashore and cause substantial ecological and economical losses. Peculiar and common ecological and physiological features of Ulva, Cladophora, and Spirogyra favorable for the formation of green tides are considered. Although eutrophication (the supply of nitrogen and phosphorus from agricultural lands, industrial and domestic wastewaters, and aquaculture) is the evident cause of the increase in algal biomass, it is suggested that the location of external fluxes of inorganic nutrients (surface runoff or groundwater discharge), as well as the biogenic redirection of internal fluxes of nitrogen and phosphorus from pelagial to littoral (benthification), play a key role in the formation of green tides. Measures for controlling green tides are discussed. The necessity for detailed studies of the metaphytonic form of vegetation of benthic macroalgae is emphasized. Obviously, a revision of the present concept of oligotrophic/eutrophic waters which considers only the pelagic compartments of aquatic ecosystems is required.

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Scopus
Держатели документа:
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Krasnoyarsk Sci Ctr, Siberian Branch, Inst Biophys, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Zool Inst, St Petersburg 199034, Russia.

Доп.точки доступа:
Gladyshev, M. I.; Gubelit, Y. I.; state task as part of fundamental research program of the Russian Federation [51.1.9, 6.1504.2017/PCh, AAAA-A19-119020690091-0]

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