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The Arctic - Current Issues and Challenges (Hardcover): Oleg S Pokrovsky The Arctic - Current Issues and Challenges (Hardcover)
Oleg S Pokrovsky
R4,621 Discovery Miles 46 210 Ships in 12 - 17 working days

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 aclimate 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.

Riparian Zones - Characteristics, Management Practices & Ecological Impacts (Hardcover): Oleg S Pokrovsky Riparian Zones - Characteristics, Management Practices & Ecological Impacts (Hardcover)
Oleg S Pokrovsky
R6,235 R5,495 Discovery Miles 54 950 Save R740 (12%) Ships in 12 - 17 working days

Riparian ecosystems occur in semi-terrestrial areas adjacent to water bodies and are influenced by freshwater. Riparian wetlands are defined as land areas adjacent to perennial, intermittent, and ephemeral streams, lakes or rivers. As a result, these areas have high water tables and periodic flooding. They support a wide range of wetland vegetation including emergent macrophytes, grasses and trees. Riparian zones and wetlands are among the most vulnerable natural ecosystems to both climate change and human impact, and they are likely to represent important hot spots for climate change adaptation. The riparian ecosystems, located at the interface between water and land, are extremely dynamic environments in terms of structure, function, diversity and strength of abiotic-biotic feedbacks. Nowadays, the riparian wetlands are strongly affected by both global climate change and human activity. For these reasons, there is a steady and even abrupt increase of scientific publications linked to riparian problems. A web search of "riparian" as a topic yielded more than 16,000 papers published between 1950 and 2015, with 7,000 of them have been published over the past five years and 10,500 produced over the preceding sixty years. This rise of scientific interest is, however, strongly biased geographically. A search of "riparian" in the titles of 4,773 scientific publications (1950-2015) yields high geographical bias with papers studying all aspects of riparian zones in the United States, Brazil, China, Canada, Africa and Europe, respectively, and only one in Russia. This book is intended to partially fill this gap by presenting nine chapters describing the studies of riparian and flood plain zones of Russia. The fourteen chapters of the book, written by the experts in the field of landscape geography, biogeochemistry, GIS techniques and biology cover two of the most important riparian zones of the world: the Amazon varzea and the Ob/Irtysh floodplains. A multidisciplinary approach across wide geographical scales and various techniques presented in this book will be interesting for a large community of scholars, students, and researchers from academic and private organisations.

Permafrost - Distribution, Composition & Impacts on Infrastructure & Ecosystems (Hardcover): Oleg S Pokrovsky Permafrost - Distribution, Composition & Impacts on Infrastructure & Ecosystems (Hardcover)
Oleg S Pokrovsky
R4,071 R3,614 Discovery Miles 36 140 Save R457 (11%) Ships in 12 - 17 working days

This book is in response to the growing demand from academics and the general public for state-of-the-art research in permafrost science and, in particular, information about its impacts on infrastructure and ecosystems. It brings together research from diverse but highly complementary scientific disciplines to illuminate the main physical, chemical and biological processes occurring in permafrost systems and identifies the possible mechanisms controlling fluxes of energy and matter at various scales. Taken together, the 8 chapters of this book provide a comprehensive, up-to-date description and analysis of the basic geomorphological, physical, hydrological, chemical and biological aspects of permafrost-affected ecosystems, their interaction with other components of the landscape and their impact on human life and infrastructure.

Lake Water - Properties and Uses (Case Studies of Hydrochemistry and Hydrobiology of Lakes in Northwest Russia) (Hardcover):... Lake Water - Properties and Uses (Case Studies of Hydrochemistry and Hydrobiology of Lakes in Northwest Russia) (Hardcover)
Oleg S Pokrovsky
R4,593 Discovery Miles 45 930 Ships in 12 - 17 working days
Dissolved Organic Matter (DOM) - Properties, Applications & Behavior (Hardcover): Oleg S Pokrovsky, Liudmila Shirokova Dissolved Organic Matter (DOM) - Properties, Applications & Behavior (Hardcover)
Oleg S Pokrovsky, Liudmila Shirokova
R6,229 R5,489 Discovery Miles 54 890 Save R740 (12%) Ships in 12 - 17 working days

Dissolved Organic Matter (DOM) is a major factor controlling global biogeochemical cycles of carbon, macro- and micronutrients and toxic metals. It plays a pivotal role both in mobilisation (chemical weathering), transport (organic complexes and colloids), biological uptake and deposition (microbial and photo-degradation) of a number of essential macro- (C, N, P) and micro- (Fe, Zn, Mn, Ni, Cu Co) nutrients. The interest of scientists to DOM is rapidly increasing. Between 1950 and 2017, more than 30,000 scientific papers on DOM were published (Web of Science (R) All Database Search); however, more than half of them were produced over the past nine years and over the last two and a half years, more than 5,400 papers were published. Such attention to DOM is clearly motivated by a combination of global climate change issues and the main role of DOM in CO2 exchange between the atmosphere and the surface waters. Despite such a large range of scientific problems concerning DOM properties, origins, and applications, there is a very strong geographical bias in terms of the amount of research devoted to various geographical regions of the world. The majority of information concerns temperate zones and boreal regions of Scandinavia and Northern America, with very little information available on Siberia and Russia. Thus, among the less than 30,000 scientific articles devoted to various aspects of DOM since 1950, only 150-200 of them are devoted to DOM in Russia or Siberia. This book is essentially oriented towards filling these gaps of our knowledge. Among thirteen chapters, eleven of them are devoted to various aspects of DOM in Russia and Siberia. Another important and still poorly characterised aspect of natural DOM is its colloidal status: four chapters of this book deal with the colloidal speciation of DOM in rivers and lakes. Given the breadth of physico-chemical, geochemical, biological, and geographical aspects of DOM covered in this book, it will be useful for a large audience of environmental scientists, limnologists, physico-chemists, soil and landscape scientists and biogeochemists.

Mosses - Ecology, Life Cycle and Significance (Hardcover): Oleg S Pokrovsky, Irina Volkova, Natalia Kosykh, Vladimir Shevchenko Mosses - Ecology, Life Cycle and Significance (Hardcover)
Oleg S Pokrovsky, Irina Volkova, Natalia Kosykh, Vladimir Shevchenko
R5,486 Discovery Miles 54 860 Ships in 12 - 17 working days

There is currently a growing interest in mosses inspired by: 1) Their use as atmospheric air quality biomonitors, 2) their importance as ecological status markers of global changes in hostile environments, and 3) their use in various bioengineering and biotechnological applications. Moreover, additional attention to mosses stems from their importance as the dominant terrestrial plants in high latitudes -- most notably arctic and subarctic regions -- that are subjected to climate warming. This book aims to characterize poorly studied aspects of the chemical composition of inventoried mosses across not only the subarctic, but also the Antarctic regions. This book focuses strongly on mosses inhabiting western and northern Siberia and European Russia, with nine total chapters devoted to these regions. Out of more than 25,000 studies dealing with mosses (from 1950 to 2018), only 300 were devoted to mosses from Siberia (WoS, all databases). This book also focuses on the use of mosses as bioindicators; physio-chemical principles and case studies of applications for tracing industrial pollution are discussed. Additionally, the process of moss biomineralization in a petrifying spring is also considered. Taken together, the twelve chapters presented provide a comprehensive overview of mosses in ecology, biodiversity, biogeochemistry, and mineralogy.

Biogeochemistry of Trace Elements (Hardcover): Oleg S Pokrovsky, Jerome Viers Biogeochemistry of Trace Elements (Hardcover)
Oleg S Pokrovsky, Jerome Viers
R6,236 R5,497 Discovery Miles 54 970 Save R739 (12%) Ships in 12 - 17 working days

Over the past few decades, tremendous progress in analytical facilities allowed for the decreasing detection limits of trace element (TE) analysis in a large number of organic and inorganic matrices. This was especially true for freshwater aquatic systems, where direct measurements of more than forty trace elements have become possible provided that necessary precautions against pollution are made and required sample preparation protocol is maintained. Therefore, analyses of both liquid (water) and solid (biomass, sediments, soils, and aerosol particles) compartments of the landscape continuum allowed for a new perspective on biogeochemical factors of trace elements in a large panel of terrestrial environments. However, among all Earth biomes, the Arctic and subarctic regions are certainly less studied from a trace element biogeochemical view point.This book adresses a variety of geochemical and biogeochemical issues of trace element behavior in soils, waters, and plants across the world, from Eastern Europe to Siberian subarctic and Arctic islands. It presents a synthesis of state-of-the-art studiesusing precise analytical techniqueson trace element concentrations, fractionation, and migration in the main biogeochemical reservoirs of the Northern Hemisphere. This book combines chapters on trace elements in soils, plants, soil waters, lakes, rivers and their estuarine zones, and atmopsheric aerosols. As such, it provides a comprehensive view of current TE biogeochemistry and can serve as a reference compilation of available information for judging future changes in trace element biogeochemistry for terrestrial environments influenced by climate warming or increasing anthropogenic pollution.

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