It is increasingly recognized that the economic value of forests is not merely the production of timber. Forests provide other key ecosystem services, such as being sinks for greenhouse gases, hotspots of biodiversity, tourism and recreation. They are also vitally important in preventing soil erosion and controlling water supplies, as well as providing non-timber forest products and supporting the livelihoods of many local people. This handbook provides a detailed, comprehensive and broad coverage of forest economics, including traditional forest economics of timber production, economics of environmental role of forests, and recent developments in forest economics. The chapters are grouped into six parts: fundamental topics in forest resource economics; economics of forest ecosystems; economics of forests, climate change, and bioenergy; economics of risk, uncertainty, and natural disturbances; economics of forest property rights and certification; and emerging issues and developments. Written by leading environmental, forest, and natural resource economists, the book represents a definitive reference volume for students of economics, environment, forestry and natural resource economics and management.

The Great Barrier Reef is located along the coast of Queensland in north-east Australia and is the world's largest coral reef ecosystem. Designated a World Heritage Area, it has been subject to increasing pressures from tourism, fishing, pollution and climate change, and is now protected as a marine park. This book provides an original account of the environmental history of the Great Barrier Reef, based on extensive archival and oral history research. It documents and explains the main human impacts on the Great Barrier Reef since European settlement in the region, focusing particularly on the century from 1860 to 1960 which has not previously been fully documented, yet which was a period of unprecedented exploitation of the ecosystem and its resources. The book describes the main changes in coral reefs, islands and marine wildlife that resulted from those impacts. In more recent decades, human impacts on the Great Barrier Reef have spread, accelerated and intensified, with implications for current management and conservation practices. There is now better scientific understanding of the threats faced by the ecosystem. Yet these modern challenges occur against a background of historical levels of exploitation that is little-known, and that has reduced the ecosystem's resilience. The author provides a compelling narrative of how one of the world's most iconic and vulnerable ecosystems has been exploited and degraded, but also how some early conservation practices emerged.

This volume contains the ten most cited articles that have appeared in the journal Atmosphere-Ocean since 1995. These articles cover a wide range of topics in meteorology, climatology and oceanography. Modelling work is represented in five papers, covering global climate model development; a cumulus parameterization scheme for global climate models; development of a regional forecast modelling system and parameterization of peatland hydraulic processes for climate models. Data rehabilitation and compilation in order to support trend analysis work on comprehensive precipitation and temperature data sets is presented in four papers. Field studies are represented by a paper on the circumpolar lead system. While the modelling studies are global in their application and applicability, the data analysis and field study papers cover environments that are specifically, but not uniquely, Canadian. This book will be of interest to researchers, students and professionals in the various sub-fields of meteorology, oceanography and climate science.

The overarching contribution of this book is a review and assessment of the current and future impacts of globalization on the world's forests. The work has been developed by the "Resources for the Future" Task Force for the International Union of Forest Research Organizations (IUFRO). Four key themes are addressed: the effect of globalization on forests (including future trade flows); plantations as the primary source of forest products and its consequences, including plant breeding and forest health; the effect of new products such as bio-products and markets on forests; and the emergence of forest ecosystem services and their impact on the landscape and human communities. These four themes are examined in detail to map out the impacts of these trends for forests throughout the world and at multiple scales, and how forest research needs to be adapted to address these trends. Overall, the volume provides a major synthesis of current thinking and knowledge on the topic for advanced students, as well as policy-makers and professionals in the forest sector.

This book provides a non-technical, accessible primer on sustainable agricultural development and its relationship to sustainable development based on three analytical pillars. The first is to understand agriculture as complex physical-biological-human systems. Second is the economic perspective of understanding tradeoffs and synergies among the economic, environmental and social dimensions of these systems at farm, regional and global scales. Third is the understanding of these agricultural systems as the supply side of one sector of a growing economy, interacting through markets and policies with other sectors at local, national and global scales. The first part of the book introduces the concept of sustainability and develops an analytical framework based on tradeoffs quantified using impact indicators in the economic, environmental and social domains, linking this framework to the role of agriculture in economic growth and development. Next the authors introduce the reader to the sustainability challenges of major agroecosystems in the developing and industrialized worlds. The concluding chapter discusses the design and implementation of sustainable development pathways, through the expression of consumers' desire for sustainably produced foods on the demand side of the food system, and through policies on the supply side such as new more sustainable technologies, environmental regulation and payments for ecosystem services.

Every year that passes without a tsunami means that we're just that much closer to our next one. What can we do to ensure we're prepared when the next catastrophic tsunami strikes? The ferocious waves of a tsunami can travel across oceans at the speed of a jet airplane. They can kill families, destroy entire cultures, and even gut nations. To understand these beasts in our waters well enough to survive them, we must understand how they're created and learn from the past. In this book, tsunami specialists James Goff and Walter Dudley arm readers with everything they need to survive a tsunami - and maybe even avoid the next one. The book takes readers on a historical journey through some of the most devastating tsunamis in human history, some of the quirky ones, and even some that may not even be what most of us think of as tsunamis. Diving into personal and scientific stories of disasters,Tsunami pulls readers into the many ways these waves can be generated, ranging from earthquakes and volcanic eruptions to explosions, landslides, and beyond. The book provides overviews of some of the great historical events - the 1755 Lisbon, 1946 Aleutian, 1960 Chile, and 2004 Indian Ocean tsunamis, but also some of the less well-known as well such as the 1958 Lituya Bay, 563 CE Lake Geneva, a 6,000 year old Papua New Guinean mystery, and even a 2.5 Million year old asteroid. This is not straight science, though. Each event is brought to life in a variety of ways through stories of survival, human folly, and echoes of past disasters etched in oral traditions and the environment. The book combines research from oceanography, biogeography, geology, history, archaeology and more, with data collected from over 400 survivor interviews. Alongside carefully selected images and the scientific measurements of these tsunamis, the book offers tales of survival, heroism, and tragic loss. Through a balanced combination of personal experience, the Earth's changing environment, tales of tragedy, and a recount of oral traditions, Tsunami allows readers to engage with a new scientific approach to these overwhelming waves. The resulting book unveils the science of disaster like never before.

Geraint Thomas's inside guide to twenty-five of the greatest cycling climbs in the world. Cycling fans obsess about climbs and big mountains. They love reading about their tests and tribulations and they love to ride them - a cricket lover can never bat at Lord's, or a football supporter score at Wembley, but any rider can take on the challenge of an iconic mountain. There have been fine books about the big climbs before but never from the voice of an elite GC winner, taking you inside what these climbs really feel like, where the attacks come, where the pain kicks in. From best-known big-hitters, via pro-peloton favourites, to the secret climbs Geraint has come to love, and featuring Australia, Belgium, France, the Netherlands, Mallorca and Wales, this is the cyclist's secret manual.

With its strong focus on readability and engaging, instructive illustrations, this trusted bestseller returns in a new edition with a bold new look, new contributor Callan Bentley, interactive “ SmartFigures,” and a highly anticipated learning path that facilitates active learning. Earth: An Introduction to Physical Geology, 11/e maintains its highly visual, non-technical survey and up-to-date coverage of foundational physical geology principles. The authors’ emphasis on currency and relevance includes the latest thinking in the field, particularly in the dynamic area of plate tectonics.

Snow and ice environments support significant biological activity, yet the biological importance of some of these habitats, such as glaciers, has only recently gained appreciation. Collectively, these ecosystems form a significant part of the cryosphere, most of which is situated at high latitudes. These ice environments are important sentinels of climate change since the polar regions are presently undergoing the highest rates of climate warming, resulting in very marked changes in the extent of ice caps, glaciers, and the sea ice. Glacial systems are also regarded as an analogue for astrobiology, particularly for Mars and the moons of Jupiter (e.g. Europa), and one of the justifications for research in this area is its potential value in astrobiology. This timely and accessible volume draws together the current knowledge on life in snow and ice environments. It describes these often complex and often productive ecosystems, their physical and chemical conditions, and the nature and activity of the organisms that have colonised them. The cryosphere is the domain of extremophiles, organisms able to adapt to the physiological and biochemical challenges of harsh cold conditions where liquid water may only be present for relatively short periods each year. The majority of extremophiles in ice and snow are microorganisms. The Ecology of Snow and Ice Environments is intended for the non-specialist, enabling environmental scientists to understand the biological functioning of extreme cold environments and for biologists to gain knowledge of the nature of the cryosphere.

Snow and ice environments support significant biological activity, yet the biological importance of some of these habitats, such as glaciers, has only recently gained appreciation. Collectively, these ecosystems form a significant part of the cryosphere, most of which is situated at high latitudes. These ice environments are important sentinels of climate change since the polar regions are presently undergoing the highest rates of climate warming, resulting in very marked changes in the extent of ice caps, glaciers, and the sea ice. Glacial systems are also regarded as an analogue for astrobiology, particularly for Mars and the moons of Jupiter (e.g. Europa), and one of the justifications for research in this area is its potential value in astrobiology. This timely and accessible volume draws together the current knowledge on life in snow and ice environments. It describes these often complex and often productive ecosystems, their physical and chemical conditions, and the nature and activity of the organisms that have colonised them. The cryosphere is the domain of extremophiles, organisms able to adapt to the physiological and biochemical challenges of harsh cold conditions where liquid water may only be present for relatively short periods each year. The majority of extremophiles in ice and snow are microorganisms. The Ecology of Snow and Ice Environments is intended for the non-specialist, enabling environmental scientists to understand the biological functioning of extreme cold environments and for biologists to gain knowledge of the nature of the cryosphere.

Biogeoscience is a rapidly growing interdisciplinary field that aims to bring together biological and geophysical processes. This book builds an enhanced understanding of ecosystems by focusing on the integrative connections between ecological processes and the geosphere, hydrosphere and atmosphere. Each chapter provides studies by researchers who have contributed to the biogeoscience synthesis, presenting the latest research on the relationships between ecological processes, such as conservation laws and heat and transport processes, and geophysical processes, such as hillslope, fluvial and aeolian geomorphology, and hydrology. Highlighting the value of biogeoscience as an approach to understand ecosystems, this is an ideal resource for researchers and students in both ecology and the physical sciences.

This volume explores the climates, landscapes, ecosystems and hazards that comprise the Mediterranean world. It traces the development of the Mediterranean landscape over very long timescales and examines modern processes and key environmental issues in a wide range of settings. The Mediterranean is the only region on Earth where three continents meet and this interaction has produced a very distinctive Physical Geography. This book examines the landscapes and processes at the margins of these continents and the distinctive marine environment between them. Catastrophic earthquakes, explosive volcanic eruptions and devastating storms and floods are intimately bound up within the history and mythology of the Mediterranean world. This is a key region for the study of natural hazards because it offers unrivalled access to long records of hazard occurrence and impact through documentary, archaeological and geological archives. The Mediterranean is also a biodiversity hotspot; it has been a meeting place for plants, animals and humans from three continents throughout much of its history. The Quaternary records of these interactions are more varied and better preserved than in any other part of the world. These records have provided important new insights into the tempo of climate, landscape and ecosystem change in the Mediterranean region and beyond. The region is unique because of the very early and widespread impact of humans in landscape and ecosystem change - and the richness of the archaeological and geological archives that chronicle this impact. This book examines this history and these interactions and places current environmental issues in long term context. Contributors : Ramadan Husain Abu-Zied Harriet Allen Jacques Blondel Maria-Carmen Llasat James Casford Marc Castellnou Andrew Goudie Andrew Harding Angela Hayes Tom Holt Babette Hoogakker Philip Hughes Jos Lelieveld John Lewin Francisco Lloret Francisco Lopez-Bermudez Mark Macklin Jean Margat Anne Mather Frederic Medail Christophe Morhange Clive Oppenheimer Jean Palutikof Gerassimos Papadopoulos Josep Pinol David Pyle Jane Reed Neil Roberts Eelco Rohling Iain Stewart Stathis Stiros John Thornes Chronis Tzedakis John Wainwright

The study of volcano-ice interactions, or 'glaciovolcanism', is a field experiencing exponential growth. This comprehensive volume presents a discussion of the distinctive processes and characteristics of glaciovolcanic eruptions, their products, and landforms, with reference to both terrestrial and Mars occurrences. Supported by abundant diagrams and photos from the authors' extensive collections, this book outlines where eruptions have occurred and will occur in the future on Earth, the resulting hazards that are unique to volcano-ice interactions, and how the deposits are used to unravel planetary palaeoclimatic histories. It has a practical focus on lithofacies, glaciovolcanic edifice morphometry and construction, and applications to palaeoenvironmental studies. Providing the first global summary of past and current work, this book also identifies those areas in need of further research, making this an ideal reference for academic researchers and postgraduate students, in the fields of volcanology, glaciology, planetary science and palaeoenvironmental studies.

Svalbard Life takes readers on a unique journey to Svalbard, an archipelago in the Arctic Ocean, constituting the northernmost part of Norway and one of the last regions of genuine wilderness in Europe. Arctic and marine biologist Paul Wassmann and Arctic photographer Rudi Caeyers exemplify and illustrate life, change, and resilience in the archipelago by unifying informative text with lavish imagery in a way that is comprehensible and stimulating. For many readers, this book will change their perception of life in the High North. Nature, communities, people, and art in Svalbard, past and present, are made accessible through short, condensed, informative texts interspersed with photographs, which both fuel the intellect and appeal to the imaginative mind. Designed to be dipped into at random, the book does not follow a straight line, but meanders, and constantly looks for diversity, ideas, and enjoyment. Towards the end of the book, the focus shifts towards the overarching issue of climate change in the Arctic Ocean. Finally, and from an Arctic perspective, a set of short essays dealing with generic aspects of living in the Arctic are presented, dealing with communicating evidence, resilience management, and the challenge of a changing climate. Applying a multidisciplinary approach and based upon participating observations, the Arctic is seen, experienced, and communicated by two insiders that not only lived and worked for decades in the High North, but also applied the perspective of their central European upbringing. Svalbard Life provides understanding of and an intuition for life and change in the Arctic.

This is the first book to describe the ecology of high latitude lakes, rivers and glacial environments in both the North and South polar regions. From the lake-rich floodplains of the Arctic to the deep, enigmatic waters of Lake Vostok, Antarctica, these regions contain some of the most extraordinary aquatic ecosystems on Earth. They provide a fascinating diversity of habitats for plant, animal and microbial communities, and are proving to be valuable model systems for exploring many ecological themes including landscape-lake interactions, adaptation of life to environmental extremes, and controls on the structure and functioning of aquatic ecosystems. Some of these waters also have direct global implications, including permafrost thaw lakes as sources of greenhouse gases, subglacial aquatic environments as a storehouse of ancient microbes, and Arctic rivers as major inputs of freshwater and organic carbon to the World Ocean. Given that many polar areas are experiencing greater climate warming than at lower latitudes, these ecosystems can also be viewed as sentinels of global change.
This timely volume brings together many of the world's leading researchers in polar limnology to describe these diverse aquatic environments and their ecology. It introduces each major ecosystem type, examines the similarities and differences between Arctic and Antarctic systems as well as their responses to environmental change, and describes new frontiers for future research. A glossary of terms is provided for non-specialists, and a set of colour plates introduces the ecosystems and their biota.
Polar Lakes and Rivers will be of value to students and specialist researchers alike, as well as tothose with a more general interest in aquatic ecology, polar environments or global change who require an authoritative overview of this fast emerging topic.

This handbook provides a comprehensive overview of the assessment and management of potentially dangerous infectious diseases, quarantined pests, invasive (alien) species, living modified organisms and biological weapons, from a multitude of perspectives. Issues of biosecurity have gained increasing attention over recent years but have often only been addressed from narrow disciplines and with a lack of integration of theoretical and practical approaches. The Routledge Handbook of Biosecurity and Invasive Species brings together both the natural sciences and the social sciences for a fully rounded perspective on biosecurity, shedding light on current national and international management frameworks with a mind to assessing possible future scenarios. With chapters focussing on a variety of ecosystems - including forests, islands, marine and coastal and agricultural land - as well as from the industrial scale to individual gardens, this handbook reviews the global state of invasions and vulnerabilities across a wide range of themes and critically analyses key threats and threatening activities, such as trade, travel, land development and climate change. Identifying invasive species and management techniques from a regional to international scale, this book will be a key reference text for a wide range of students and academics in ecology, agriculture, geography, human and animal health and interdisciplinary environmental and security studies.

Outcrops of granitic rocks cover a large proportion of the Earth's surface and host a range of spectacular landforms and landscapes, from extensive plains dotted by inselbergs to deeply dissected mountain ranges. They are often strikingly beautiful, but more importantly, they provide valuable insights into the mechanisms of geomorphic evolution both in the past and at present. The book offers a comprehensive view of the geomorphology of granite areas, examining individual landforms and their assemblages. Weathering processes, and the phenomenon of deep weathering in particular, are given much emphasis as these are fundamental to the understanding of the geomorphic evolution of granite areas. Granite landforms directly related to weathering, such as boulders, tors, inselbergs, and features of surface microrelief are examined in respect to their characteristics and origin. Patterns of slope evolution are shown in the context of both rock slopes and deeply weathered terrains. Granite geomorphology in the coastal, periglacial and glacial context is presented to show how the characteristics of granite control landform evolution in these specific environments. In the closing part a variety of geological controls is reviewed and their primacy over other factors is advocated, followed by an attempt to provide a typology of natural granite landscapes. Finally, certain specific ways of human transformation of granite landscapes are presented. The book will be useful to a range of earth science disciplines, including geomorphology, igneous petrology, engineering geology and soil science. Cultural geographers and people dealing with conservation of geological heritage should find it of interest. Examples from all parts of the world and extensive referencing ensure that it will act as an up-to-date guidebook to the fascinating world of granite geomorphology.

Mountains, one of nature's greatest masterpieces, in their rugged beauty, breathtaking views from the top, clear air, green pastures, mountain lakes and glaciers, have captivated mankind all along. Climbing mountains or just gazing at their majestic splendor causes us to slow down and contemplate, maybe even giving us a little serenity. Photographer Tim Hall beautifully captures the powerful solace of mountains in his images. He often chooses to shoot in dramatic weather, making his work and the photographed mountains look even more stunning and transcendent. The intention to strike an emotional or spiritual chord is evident in much of his landscape work, which is inspired by Rothko and Turner. The influence of painting in his work stems from his studies of Art History at Manchester University. Mountains - Beyond the Clouds presents the extensive Alpine mountain range, including famous landmarks such as the Mont Blanc, the Matterhorn, and the Dolomites. Text in English, German and French.

A distinguished team of Western European scholars has written an advanced, full-length physical geography designed to be a state-of -the-art evaluation of the physical environment of Western Europe, being both retrospective and prospective in its perception of environmental change. The unique natural and regional environments of Western Europe are discussed, as well as the physical geographic framework of the region. Particular emphasis is placed on the impact and responses of human society on the physical environment of the region which is characterized by a very high population density. As an enhanced reference work it will be of enduring value.

This is the fifth volume in the Oxford Regional Environments series. The series is devoted to major regions of the world, each presenting a detailed and up-to-date body of scientific knowledge concerning a particular region. Fennoscandia is composed of Finland ('Fennia' in Latin) and the Scandinavian peninsula (Norway and Sweden). A team of experts presents the physical geographical factors which affect and control life in this northern area. The contributors concentrate on topics which are characteristic of the region, scientifically sound, and not necessarily familiar to an international audience, such as land uplift, large drumlin fields and eskers, mires, snow, the timberline, fjords, archipelagos, lakes, scattered frost features, and the biodiversity of conservation.

The Physical Geography of Southeast Asia examines the complex mosaic of physical environments which comprise Southeast Asia, and the current environmental problems and management practices which have arisen in this part of the world. The book is in three sections. The first section introduces the basic environmental components (geology, landforms, rivers, vegetation, and others) across the entire region. The second section discusses specific environments that are characteristic of this assemblage of continental and maritime landscapes (volcanic islands, coastal environment, granitic terrains, karst, etc.). The third and final section illustrates the ecological relationship between the environment and people (volcanic hazards, urban environment, coastal zone development, coral reefs, and others). The physical environment of Southeast Asia is examined at different levels, covering a world region that ranges from ancient, stable landmasses to dynamic, unstable plate boundaries, from aged, primary rainforests to brash, vibrant, resource-demanding built environments. Southeast Asia has been perceived as a laboratory for studying plate tectonics. It is an assemblage of large river basins, peninsulas and archipelagos, and seas surrounded by islands. It is an area of great physical variations where parts of the physical environment have been significantly degraded anthropogenically, following rapid population growth and development. In large parts of the region, the forms and processes on land and offshore should no longer be seen as entirely natural. As this book repeatedly illustrates, plate tectonics and people are both important contributors to the physical geography of Southeast Asia. The contributors to this volume are distinguished, scholarly, and have a long association with Southeast Asia. The chapters are not only skilfully built on state-of-the-art research findings but also include new material from the on-going research activities of the authors. The book goes beyond being the first comprehensive and detailed volume of the biophysical geography of Southeast Asia in that it also deals with the tropical environment and the relationship between environment and people in a rapidly developing world region.

This book is the only comprehensive summary of natural resources of Oregon and adds to World Soil Book Series state-level collection. Due to broad latitudinal and elevation differences, Oregon has an exceptionally diverse climate, which exerts a major influence on soil formation. The mean annual temperature in Oregon ranges from 0 DegreesC in the Wallowa and Blue Mountains of northeastern Oregon to 13 DegreesC in south-central Oregon. The mean annual precipitation ranges from 175 mm in southeastern Oregon to over 5,000 mm at higher elevations in the Coast Range. The dominant vegetation type in Oregon is temperate shrublands, followed by forests dominated by lodgepole pine, Douglas-fir, and mixed conifers, grasslands, subalpine forests, maritime Sitka spruce-western hemlock forests, and ponderosa pine-dominated forests. Oregon is divided into 17 Major Land Resource Areas, the largest of which include the Malheur High Plateau, the Cascade Mountains, the Blue Mountain Foothills, and Blue Mountains. The single most important geologic event in Oregon was the deposition of Mazama ash 7,700 years by the explosion of Mt. Mazama. Oregon has soil series representative of 10 orders, 40 suborders, 114 great groups, 389 subgroups, over 1,000 families, and over 1,700 soil series. Mollisols are the dominant order in Oregon, followed by Aridisols, Inceptisols, Andisols, Ultisols, and Alfisols. Soils in Oregon are used primarily for forest products, livestock grazing, agricultural crops, and wildlife management. Key land use issues in Oregon are climate change; wetland loss; flooding; landslides; volcanoes, earthquakes, and tsunamis; coastal erosion; and wildfires.

Artificial mountains are a worldwide reality. Their presence influenced the history of urbanism, architecture, and landscape architecture. Burial sites use, very frequently, the intimidating shape of the man-made mountain. Incense burners in ancient China evoked the Five Sacred Mountains. Mount Parnassus in Greece became an important element in European garden history and a symbol of the Renaissance. In the Baroque Rome of the 17th century the most important artists worked on the constructions of huge ephemeral mounds in order to express more or less codified messages. The model of the artificial mountain was used as well during the French Revolution: the famous celebration of the Supreme Being took place on a gigantic faux mountain. The history of landscape architecture is characterized by the construction of architectural mounds, often built by using local excavation material. The industrial revolution acted as another source for the rise of an anthropic topography, creating forms, which we do not recognise anymore as totally artificial. Architects have found in the form of mountains a model and a gestalt with which to play in an ironic way. In twentieth-century art, mountains are ubiquitous, culminating in Robert Smithson’s masterful exploration of reversed, displaced, and rebuilt mountains. Michael Jakob’s study is the first one to address this fascinating worldwide phenomenon stretching from Antiquity to our days

This book critically engages with how the conservation of tropical coral reefs is financed. Beginning with the context of tropical coral reef degradation and loss, alongside an overview of tropical ecology, global environmental policy and finance, the book reviews several conservation financing instruments. These include ecotourism, debt-for-nature swaps, impact investments, and government domestic budgetary expenditures. From the Great Barrier Reef, to the Coral Triangle, to the Mesoamerican Reef, tropical coral reef degradation and loss are serious global environmental issues, contributing to loss revenue and food insecurity for coastal communities, and species extinction. Yet, many leading companies, individuals, and governments are making a positive impact on tropical coral reef conservation through the use of conservation finance. Conservation of Tropical Coral Reefs, using 30 case studies which span 23 countries and 6 continents, tells the history of international conservation finance and provides a variety of options for individuals, businesses, and governments to support conservation financing projects.

This is the third volume to appear in The Oxford Regional Environments Series. It covers most of the territory of the former USSR and is divided into three main areas of interest. The first establishes the framework by discussing individual components of the physical environment, while the second concentrates on regional analysis. In the concluding part the effects of anthropogenic activities on the physical environment are discussed. The approach adopted is an integrative one, tying together various aspects of the physical environments with the environmental implications of human activites. Bringing together experts in their fields, the book will provide the most comprehensive and complete evaluation of the physical environment of Northern Eurasia available to date.