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4 results on '"Ludmila G. Khokhlova"'

1. Long-Term Changes of Aquatic Communities in the Kharbeyskie Lakes

Author

Elena B. Fefilova, Maria A. Baturina, Olga N. Kononova, Olga A. Loskutova, Ludmila G. Khokhlova, and Olga P. Dubovskaya

Subjects
freshwater zooplankton, zoobenthos, tundra water ecosysrems, climate warming, trophy, Biotechnology, TP248.13-248.65, Biology (General), QH301-705.5
Abstract

Kharbeyskie Lakes situated on the North-East of the European Russia were sampled. The aim of the present work was to evaluate the changes in the lakes ecosystems which took place during more than 40 years since the first sampling in 1960’s. Faunal richness of aquatic communities changed insignificantly under warming climate and low anthropogenic impacts. Nevertheless, the following changes in zooplankton community of the lakes can be considered as the signs of their oligotrophication: the abundance of species indicating oligotrophic water has increased, the abundance of species indicating eutrophy has decreased, the crustacean role comparing the role of rotifers in zooplankton in quantitative terms has grown, faunal coefficients of trophy (E, E/O) have reduced. According to the structural characteristics of zooplankton the large Kharbeyskie lakes are oligotrophic at present. Zoobenthos is more inert community than zooplankton under influence of environmental changes. According to the data on zoobenthic abundance, biomass, composition and structure, the Kharbeyskie Lakes are mesotrophic ecosystems as well as they were in 1968 and 1969. Some dynamic features of the studied aquatic communities indicate a warming influence on the ecosystem of the Kharbeyskie Lakes in the 2000s. These include increasing of abundance and biomass of zooplankton, zoobenthos and some plankton and benthos taxa and the appearance of thermophilic and eutrofication indicating species in zooplankton

Published
2014

2. Hydrochemical Characteristic of the Temporary Water Bodies on the Catchment Area of Kharbeyskie Lakes (Bolshezemelskaya Tundra)

Author

Ludmila G. Khokhlova and Elena B. Fefilova

Subjects
temporary water bodies, chemical composition of water, organic and biogenic substances, microelements, Biotechnology, TP248.13-248.65, Biology (General), QH301-705.5
Abstract

On the catchment area of Kharbeiskie Lakes (Bolshezemelskaya Tundra) in July-August 2009-2010 chemical composition of water of 41 temporary water bodies was investigated. Data on distribution of 28 hydrochemical factors in the drainage depending on morphological characteristics of the water bodies and their genesis were obtained. Water bodies with lowered pH, low-mineralization, hydrocarbonate and sulfate-calcium, sodium or potassium composition were revealed, among all microelements Fe, Mn, Cu, Zn prevailed. The majority of hydrochemical factors in the temporary water bodies varied in a wider range in comparison with those in lakes. Based on the acidity of water, the content of organic substance, concentration of Mn, Cu, Zn and Al the studied water bodies belonged to five groups

Published
2014

3. Arctic Rivers

Author

John E. Brittain, Jim Bogen, Ludmila G. Khokhlova, Kjetil Melvold, Angelina S. Stenina, Gísli M. Gíslason, Sturla Brørs, Sergej K. Kochanov, Jón S. Ólafsson, Vasily I. Ponomarev, Arne J. Jensen, Alexander V. Kokovkin, and Lars-Evan Pettersson

Subjects
Pollution, Pollutant, Fishery, Geography, geography.geographical_feature_category, Stocking, Arctic, Continental shelf, media_common.quotation_subject, Introduced species, Ecosystem, Contaminated land, media_common
Abstract

Publisher Summary Arctic rivers are generally among the most pristine ecosystems worldwide. However, they are under increasing threat from global and regional anthropogenic impacts. Although often far removed from centers of industrial activity, they are subject to the long-range transport of persistent organic pollutants in addition to local sources of pollution. For instance, freshwaters in northern Norway have been severely affected by acidification as a result of emissions from smelters further east. The poor nutrient status of many arctic ecosystems makes them particularly vulnerable to uptake of contaminants. Rivers along the northern coastlines of Eurasia are also key transport pathways, carrying pollutants from contaminated land areas, such as those associated with weapons production, out into the continental shelves of the northern oceans. The fish resources of Arctic rivers have been exploited by man for centuries and catches of migrating salmonids have been important for many indigenous people. However, the introduction of exotic species and stocking with genetically foreign strains has been widespread. Recreational fishing is becoming an important industry in many Arctic rivers.

Published
2009

4. List of Contributors

Author

Aydin Akbulut, Nuray (Emir) Akbulut, Jurij V. Aleksandrov, Margarita S. Alexevnina, Claude Amoros, Hans E. Andersen, N.A. Arnaut, Hartmut Arndt, Mikhail A. Baklanov, Jürgen Bäthe, Christian Baumgartner, Serdar Bayarl, Horst Behrendt, V.V. Bekh, Jürg Bloesch, B. Boz, Jean-Paul Bravard, John E. Brittain, Jim Bogen, Agrita Briede, Sturla Brørs, Georges Carrel, Jean-Pierre Descy, Marie-José Dole-Olivier, Ivars Druvietis, Svetlana A. Dvinskikh, Alcibiades N. Economou, Jon Arne Eie, Tatjana V. Eremkina, Per Einar Faugli, Maria Feio, Helmut Fischer, Nikolai Friberg, Aleksandra Gancarczyk, Ritma Gaumiga, Ģsertrude Gavrilova, Yuri V. Gerasimov, Chris N. Gibbins, Gísli M. Gíslason, Manuel A.S. Graça, Konstantinos C. Gritzalis, B. Gumiero, Justyna Hachoł, Svein Haugland, Thomas Hein, Alan G. Hildrew, Carl. C. Hoffmann, Nils Arne Hvidsten, Arne J. Jensen, V.M. Katolikov, Ludmila G. Khokhlova, Alexander B. Kitaev, Sergej K. Kochanov, Alexander V. Kokovkin, Ludmila G. Korneva, Brian Kronvang, L.A. Kudersky, Jan Henning L'Abée-Lund, Nicolas Lamouroux, Małgorzata Łapińska, Valentina I. Lazareva, Rob. S. E. W Leuven, Alexander S. Litvinov, N.S. Loboda, B. Maiolini, Florian Malard, Iain A. Malcolm, B. Malmqvist, Marina M. Mel'nik, Kjetil Melvold, Natalya M. Mineeva, F. Moroni, Isabel Muñoz, T. Muotka, C. Nilsson, Victor M. Noskov, Franciszek Nowacki, Alexander G. Okhapkin, Jón S. Ólafsson, Jean-Michel Olivier, Vaida Olšauskytè, Ana Ostojić, Vladimir G. Papchenkov, Elga Parele, Momir Paunović, Morten L. Pedersen, Fabian D. Peter, Vegard Pettersen, Lars-Evan Petterson, Vasily I. Ponomarev, Elena V. Presnova, Martin Pusch, M. Rinaldi, Christopher T. Robinson, Anna M. Romaní, Sergi Sabater, Yalçln Şahin, Svein Jakob Saltveit, Leonard Sandin, Martin Schneider-Jacoby, Franz Schöll, Matthias Scholten, Elena B. Seletkova, Grigory Kh. Shcherbina, Galina V. Shurganova, Rosi Siber, B.G. Skakalsky, Ričardas Skorupskas, Nikolaos Th. Skoulikidis, Nike Sommerwerk, Chris Soulsby, Gunta Sprińǵe, Bernhard Statzner, Sonja Stendera, Angelina S. Stenina, A.N. Sukhodolov, N. Surian, Lars M. Svendsen, Doerthe Tetzlaff, H. Timm, Klement Tockner, Diego Tonolla, Urs Uehlinger, M.A. Usatii, Karl M. Wantzen, Ewa Wnuk-Gławdel, Christian Wolter, Margarita I. Yarushina, Maciej Zalewski, Euvgeny A. Zinov'ev, Stamatis Zogaris, Vaida Olšauskyté, and Riĉardas Skorupskas

Published
2009

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