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Intro -- Contents -- Preface -- Lakes as Sentinels for Current Climate Changes and Anthropogenic Pressure -- Acknowledgements -- Chapter 1 -- Multidisciplinary Research of Different Types of Boreal Lakes in North-West of Russia -- Abstract -- Introduction -- General Characteristics of Lakes -- Climatic Conditions of the Region: Analysis of Long-Term Trends -- Methods -- Main Research Results -- Acknowledgments -- References -- Chapter 2 -- Multidisciplinary Research of the Lake Kenozero (Northern Part of the Kenozersky National Park) in the Summer -- Abstract -- Physio-Geographical and Hydrological Parameters of the Lake -- Nutrients -- Iron -- Zooplankton -- Phytoplankton -- Bacterioplankton -- Conclusion -- Acknowledgments -- References -- Chapter 3 -- Long-Term Study of the Ecosystem Components Variability of the Lake Lekshmozero (The Southern Part of the Kenozersky National Park) -- Abstract -- Introduction -- Morphometric and Hydrographic Characteristics of Lekshmozero -- Hydrological Regime -- Water Temperature -- Specific Conductivity (Mineralization) -- Dissolved Oxygen -- Hydrochemical Characteristic -- Dynamics of Main Nutrients in Lekshmozero -- Forms of Iron and Color -- Dissolved Organic and Inorganic Carbon Concentrations -- Zooplankton Community Composition -- Phytoplankton Community Composition -- Microbiological Characteristics -- Conclusion -- Acknowledgments -- References -- Chapter 4 -- Fish Death in the Mesotrophic Lake Lekshmozero: Possible Causes -- Abstract -- Introduction -- Features of Lake Lekshmozero -- Analysis of the Situation -- Discussion and Conclusion -- Acknowledgments -- References -- Chapter 5 -- Oligotrophic Lake Naglimozero during Seasonal Stratification -- Abstract -- Introduction -- Hydrographic and Morphometric Characteristics -- Hydrological Characteristics -- Water Temperature.

RIPARIAN ZONES CHARACTERISTICS, MANAGEMENT PRACTICES AND ECOLOGICAL IMPACTS -- RIPARIAN ZONES CHARACTERISTICS, MANAGEMENT PRACTICES AND ECOLOGICAL IMPACTS -- Library of Congress Cataloging-in-Publication Data -- CONTENTS -- ACKNOWLEDGMENT -- INTRODUCTION -- REFERENCES -- Chapter 1 BIOLOGICAL DIVERSITY AND CURRENT THREATS OF LOTIC ECOSYSTEMS -- ABSTRACT -- 1. INTRODUCTION -- 2. DIVERSITY OF LOTIC ECOSYSTEMS -- 2.1. Large Rivers -- 2.2. Temporary/Small Rivers -- 2.3. Floodplain Rivers -- 2.3. Estuarine Systems -- 3. SPECIAL FEATURES OF LOTIC SYSTEMS -- 3.1. Ecotones in the Lotic Systems

Introduction -- Trace Metal Exposure in Different Livestock Production Systems / I. Orjales, R. Rodríguez-Bermúdez, M. Miranda, M. López-Alonso and M. Garcia-Vaquero -- Lithological Distribution of Rare Earth Elements in Soil and Atmospheric Precipitates in the Bregalnica River Basin / Trajče Stafilov, Biljana Balabanova and Robert Šajn -- Identification, Evaluation, and Estimation of the Levels of Potentially Harmful Trace Elements in Sediments Based on the Application of Different Methods / Sanja M. Sakan, Nenad M. Sakan and Dragana S. Đorđević -- Accumulation of Trace Elements in Sediments and Macrophytes of Thermokarst Lakes in Western Siberia / R.M. Manasypov, O.S. Pokrovsky, L.S. Shirokova, S.N. Kirpotin and N.S. Zinner -- Trace Elements in Snow Cover of Western Siberia : Impact of Snow Deposition on Surface Water Chemistry / V.P. Shevchenko, S.N. Vorobyev, I.V. Krickov, R.M. Manasypov, N.V. Politova, S.G. Kopysov, O.M. Dara, Y. Auda, L.S. Shirokova, L.G. Kolesnichenko, V.A. Zemtsov, S.N. Kirpotin and O.S. Pokrovsky -- Major and Trace Elements in Peat Pore Water Found in the Permafrost Zone of Western Siberia / T.V. Raudina, S.V. Loiko, A. Lim, I.V. Krickov, L.S. Shirokova, G.I. Istigechev, D.M. Kuzmina, S.P. Kulizhsky, S.N. Vorobyev and O.S. Pokrovsky -- Hot Spots of Permafrost Thawing Enhance Trace Metal Release into Thermokarst Waters / S.V. Loiko, O.S. Pokrovsky, T.V. Raudina, A.G. Lim, L.G. Kolesnichenko, L.S. Shirokova, S.N. Vorobyev, S.N. Kirpotin and D.M. Kuzmina -- Trace Elements in the Form of Organo-Mineral Colloids in the Mixing Zone of the Arctic River / O.S. Pokrovsky, J. Viers, A.V. Chupakov, L.S. Shirokova, V.V. Gordeev and V.P. Shevchenko -- The Distribution of Metals in Different Types of Soils of Northern Karelia / O. Yu. Drozdova, Yu. A. Zavgorodnyaya, D.A. Bychkov, V.V. Demin and S.A. Lapitskiy -- Trace Metals in Soil Catenas of the Arctic Islands (THe Svalbard and Novaya Zemlya Archipelagos) / Vidas V. Kriauciunas, Stanislav A. Iglovsky and Irina A. Kuznetsova -- Trace Metal Binding Properties of the Peat : Static and Dynamic Sorption / Irina A. Kuznetsova, Stanislav A. Igkovsky and Vidas V. Kriauciunas.

"The importance of the Arctic in many fields of human activity strongly increased over the past decades. The academic scientific research demonstrates a 3-fold increase in the number of journal articles dealing with "Arctic": from 1,400 in 2000 to 4,200 in 2018. This increase is not fortuitous but certainly stems from double importance of Arctic regions for humanity. The first importance is the role that the Arctic plays in the on-going environmental changes, mostly linked to climate warming and environmental pollution. Here, the first key issues are the Arctic Ocean, ice melt, permafrost thaw, greenhouse gases emission, and organic carbon mobilization from soils to rivers. From the other hand, highly fragile Arctic ecosystems and biota are strongly affected by environmental pollution, be it organic compounds or toxic metals and radionuclides. The rising concern of humanity to the key role of the Arctic in climate regulation on the planetary scale and the extreme fragility of its ecosystem, biota and native population to on-going environmental change can certainly explain an explosive interest of scientific researchers to the Arctic in connection with 'climate change'. The second big issue of the Arctic is its eminent role in problems of natural resources. The Artic shelf contains vast amount of hydrocarbons (gas and oil), whereas the terrestrial polar regions, now liberating from ice, may turn out to be highly important sites of future ore industry. The importance of possibly ice-free Arctic Ocean as future maritime shipping routes will further enhance the accessibility of natural resources in this region. Taken together, this can be the main driving factors of almost exponential increase in the interest to natural resources in the Arctic over past few years. The present book addresses a wide variety of environmental, social and economic issues of the Arctic, in response to rising interest to this region in academic science, sociology and business. The 14 chapters represent state-of-the art reviews written by the experts on problems of native communities, climate change, political issues, implementation of large-scale projects, natural resources and conservation, environmental monitoring and assessment of pollution issues"--

AbstractHigh-altitude Pyrenean lakes are ecosystems far from local pollution sources, and thus they are particularly sensitive to the atmospheric deposition of metals and metalloids. This study aims to quantify the effect of human activity in 18 lakes located in both side of the France–Spain frontier. Sediment cores were collected in summer 2013, sampled at a 1cm resolution and the concentration of 24 elements was measured by ICP-MS. Statistic and chemometric analysis of the results highlights the influence of the geographical position and lithogenic features of each lake basin on trapping pollutants. More than the 80% of the lakes showed values of enrichment factor (EF) above 2 for at least one of the elements investigated in at least one core interval, which corroborates the existence of historical anthropogenic inputs of elements in the studied area. The results demonstrate the natural origin of As and Ti in Pyrenees, together with the significant anthropogenic inputs of Cd, Pb, Sb and Sn from ancient times. The data set points mining activities as the main historical source of pollution and illustrate the large impact of the industrial revolution. The regional variability could reflect also differential long-range transport, followed by dry or wet deposition.