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Books > Earth & environment

Biolubricants - Science and Technology (Hardcover, New): J.C.J. Bart, E. Gucciardi, S Cavallaro Biolubricants - Science and Technology (Hardcover, New)
J.C.J. Bart, E. Gucciardi, S Cavallaro
R6,096 Discovery Miles 60 960 Ships in 10 - 15 working days

Lubricants are essential in engineering, however more sustainable formulations are needed to avoid adverse effects on the ecosystem. Bio-based lubricant formulations present a promising solution. Biolubricants: Science and technology is a comprehensive, interdisciplinary and timely review of this important subject.
Initial chapters address the principles of lubrication, before systematically reviewing fossil and bio-based feedstock resources for biodegradable lubricants. Further chapters describe catalytic, (bio) chemical functionalisation processes for transformation of feedstocks into commercial products, product development, relevant legislation, life cycle assessment, major product groups and specific performance criteria in all major applications. Final chapters consider markets for biolubricants, issues to consider when selecting and using a lubricant, lubricant disposal and future trends.
With its distinguished authors, Biolubricants: Science and technology is a comprehensive reference for an industrial audience of oil formulators and lubrication engineers, as well as researchers and academics with an interest in the subject. It provides an essential overview of scientific and technological developments enabling the cost-effective improvement of biolubricants, something that is crucial for the green future of the lubricant industry.
A comprehensive, interdisciplinary and timely review of bio-based lubricant formulationsAddresses the principles of lubricationReviews fossil and bio-based feedstock resources for biodegradable lubricants

Metropolitan Sustainability - Understanding and Improving the Urban Environment (Hardcover, New): F Zeman Metropolitan Sustainability - Understanding and Improving the Urban Environment (Hardcover, New)
F Zeman
R5,710 Discovery Miles 57 100 Ships in 10 - 15 working days

Global populations have grown rapidly in recent decades, leading to ever increasing demands for shelter, resources, energy and utilities. Coupled with the worldwide need to achieve lower impact buildings and conservation of resources, the need to achieve sustainability in urban environments has never been more acute. This book critically reviews the fundamental issues and applied science, engineering and technology that will enable all cities to achieve a greater level of metropolitan sustainability, and assist nations in meeting the needs of their growing urban populations.
Part one introduces key issues related to metropolitan sustainability, including the use of both urban metabolism and benefit cost analysis. Part two focuses on urban land use and the environmental impact of the built environment. The urban heat island effect, redevelopment of brownfield sites and urban agriculture are discussed in depth, before part three goes on to explore urban air pollution and emissions control. Urban water resources, reuse and management are explored in part four, followed by a study of urban energy supply and management in part five. Solar, wind and bioenergy, the role of waste-to-energy systems in the urban infrastructure, and smart energy for cities are investigated. Finally, part six considers sustainable urban development, transport and planning.
With its distinguished editor and international team of expert contributors, Metropolitan sustainability is an essential resource for low-impact building engineers, sustainability consultants and architects, town and city planners, local/municipal authorities, and national and non-governmental bodies, and provides a thorough overview for academics of all levels in this field.
Critically reviews the fundamental issues and applied science, engineering and technology that will enable all cities to achieve a greater level of metropolitan sustainabilityWill assist nations in meeting the needs of their growing urban populationsChapters discuss urban land use, the environmental impact of the build environment, the urban heat island effect, urban air pollution and emissions control, among other topics

Natural Capital - Theory and Practice of Mapping Ecosystem Services (Hardcover, New): Peter Kareiva, Heather Tallis, Taylor H.... Natural Capital - Theory and Practice of Mapping Ecosystem Services (Hardcover, New)
Peter Kareiva, Heather Tallis, Taylor H. Ricketts, Gretchen C. Daily, Stephen Polasky
R5,237 Discovery Miles 52 370 Ships in 10 - 15 working days

In 2005, The Millennium Ecosystem Assessment (MA) provided the first global assessment of the world's ecosystems and ecosystem services. It concluded that recent trends in ecosystem change threatened human wellbeing due to declining ecosystem services. This bleak prophecy has galvanized conservation organizations, ecologists, and economists to work toward rigorous valuations of ecosystem services at a spatial scale and with a resolution that can inform public policy.
The editors have assembled the world's leading scientists in the fields of conservation, policy analysis, and resource economics to provide the most intensive and best technical analyses of ecosystem services to date. A key idea that guides the science is that the modelling and valuation approaches being developed should use data that are readily available around the world. In addition, the book documents a toolbox of ecosystem service mapping, modeling, and valuation models that both The Nature Conservancy and the World Wide Fund for Nature (WWF) are beginning to apply around the world as they transform conservation from a biodiversity only to a people and ecosystem services agenda. The book addresses land, freshwater, and marine systems at a variety of spatial scales and includes discussion of how to treat both climate change and cultural values when examining tradeoffs among ecosystem services.

Sustainability in the Chemistry Curriculum (Hardcover, New): Catherine Middlecamp, Andrew Jorgensen Sustainability in the Chemistry Curriculum (Hardcover, New)
Catherine Middlecamp, Andrew Jorgensen
R5,470 Discovery Miles 54 700 Ships in 10 - 15 working days

Now more than ever we are facing pressing world challenges of energy (identifying alternate energy), food (ensuring the food supply), water (providing clean water), and human health (enabling individualized medicine); and to solve these challenges will require chemistry and the related chemical sciences. Integrating sustainability into everything we do from instituting responsible operations, to selecting partners for change and innovating sustainable solutions. Industry needs academe to prepare their graduates to ascend the ladder with skill and agility. This can only be done by integrating sustainability expeditiously into chemistry curricula.

Sustainable Nanotechnology and the Environment: Advances and Achievements (Hardcover): Najm Shamim, Virender K. Sharma Sustainable Nanotechnology and the Environment: Advances and Achievements (Hardcover)
Najm Shamim, Virender K. Sharma
R5,480 Discovery Miles 54 800 Ships in 10 - 15 working days

This book makes a serious effort at bringing forth and synergistically combining the concepts of green chemistry, sustainability and nanotechnology and should motivate scientistsat all levels to think clearly and seriously about creating and optimizing novel and sustainable green approaches to nanotechnology. The chapters in this book can be divided into three broad categories: 1) Advancement in research on pollution control through the green chemistry principles of nanotechnology; 2) Emergence of nanomaterials in widespread applications in various scientific fields, including but not limited to sensors and catalysts; 3) Extension of research into nanotechnology and green nanotechnology at a rapid pace. Review articles on the individual aspects of these diverse and complementary topics have become important resources for researchers, industry leaders, and regulators, both nationally and internationally. This book contains a few chapters associated with these particular themes, and provides glimpses of the many difficulties and challenges faced by those who seek to not only understand but also regulate the new nanomaterials. Nanotechnology represents a unique field of science, and necessitates new and novel sustainable approaches to create usable end products for the market place with the primary goal of yielding less adverse effects upon both human health and the environment.

Food and Nutrition - What Everyone Needs to Know (R) (Hardcover): P. K. Newby Food and Nutrition - What Everyone Needs to Know (R) (Hardcover)
P. K. Newby
R1,664 Discovery Miles 16 640 Ships in 10 - 15 working days

From gluten-free to all-Paleo, GMOs to grass-fed beef, our newsfeeds abound with nutrition advice. Whether sensational headlines from the latest study or anecdotes from celebrities and food bloggers, we're bombarded with "superfoods" and "best ever" diets promising to help us lose weight, fight disease, and live longer. At the same time, we live in an over-crowded food environment that makes it easy to eat, all the time. The result is an epidemic of chronic disease amidst a culture of nutrition confusion-and copious food choices that challenge everyday eaters just trying to get a healthy meal on the table. But the exhilarating truth is that scientists know an astounding amount about the power of food. A staggering 80% of chronic diseases are preventable through modifiable lifestyle changes, and diet is the single largest contributing factor. And we also know the secrets to eating sustainably to protect our planet. In Food & Nutrition, Harvard- and Columbia-trained nutrition scientist Dr. P.K. Newby examines 134 stand-alone questions addressing "need to know" topics, including how what we eat affects our health and environment, from farm to fork, and why, when it comes to diet, the whole is greater than the sum of its parts-and one size doesn't fit all. At the same time, Newby debunks popular myths and food folklore, encouraging readers to "learn, unlearn, and relearn" the fundamentals of nutrition at the heart of a health-giving diet. Her passion for all things food shines through it all, as does her love of the power of science, technology, and engineering to help create healthier diets for ourselves, and a more sustainable future for the planet we share.

The Elizabeth River (Paperback): Amy Waters Yarsinske The Elizabeth River (Paperback)
Amy Waters Yarsinske
R772 R702 Discovery Miles 7 020 Save R70 (9%) Ships in 18 - 22 working days

The Elizabeth River courses through the heart of Virginia. The Jamestown colonists recognized the river's strategic importance and explored its watershed almost immediately after the 1607 founding. The Elizabeth River traces four centuries of this historic stream's path through the geography and culture of Virginia.

Bioeconomics of Invasive Species - Integrating Ecology, Economics, Policy, and Management (Hardcover): Reuben P. Keller, David... Bioeconomics of Invasive Species - Integrating Ecology, Economics, Policy, and Management (Hardcover)
Reuben P. Keller, David M. Lodge, Mark A. Lewis, Jason F. Shorgen
R1,845 Discovery Miles 18 450 Ships in 10 - 15 working days

Biological invasions are one of the strongest drivers of global environmental change, and invasive species are now often in the public discourse. At the same time, economists have begun to take a real interest in determining how invasive species interact with economic systems, and how invaders should be controlled to optimize societal wealth. Although the work from ecologists and economists have both greatly expanded our understanding of the drivers and impacts of invasions, little integration between the fields has occurred that would allow managers and policy-makers to identify the optical expenditures on, for example, prevention and control of invasive species. Because the level of effort expended on invasive species management is intricately linked to the costs and projected benefits of that management, there is an urgent need for greater synthesis between ecology and economics.
This book brings ecology and economics together in new ways to address how we deal with the dynamics and impacts of invasive species, and is the outcome fo many years of collaborative research between a small group of economists and ecologists. The outcome is clear demonstration of the utility of combining ecological and economic models for addressing critical questions in the management of invasive species.

Winds of Change - The Environmental Movement and the Global Development of the Wind Energy Industry (Hardcover): Ion Bogdan Vasi Winds of Change - The Environmental Movement and the Global Development of the Wind Energy Industry (Hardcover)
Ion Bogdan Vasi
R2,220 Discovery Miles 22 200 Ships in 10 - 15 working days

Winds of Change examines the global development of the wind energy industry from a political, social movements-based perspective. It argues the wind energy industry developed successfully in certain regions and countries in large part because the environmental movement influenced its growth. Vasi then defines and analyses the three main pathways through which the environmental movement has contributed to industry growth: it has influenced the adoption and implementation of renewable energy policies, it has created consumer demand for clean energy, and it has changed the institutional logics of the energy sector. The book uses quantitative analysis to present the big picture of the global development of the wind energy industry, then draws on qualitative analyses to understand why countries such as Germany, Denmark, or Spain are world leaders in wind energy, while other countries such as the United States, United Kingdom, or Canada have a somewhat underdeveloped wind power industry. It also analyzes how the environmental movement contributed to the recent growth of the market for renewable energy certificates in the United States. The book also examines the remarkable transformation of the electricity sector in different countries, showing how environmentalists in Germany, Denmark, United States and United Kingdom contributed to wind turbine manufacturing by becoming entrepreneurs, innovators, and/or advocates, and, furthermore, how environmental groups and activists formed new companies that specialize in wind-farm development and operation, and pressured utility companies to invest in renewable energy by using tactics such as protests, lawsuits, and lobbying for stricter regulation. In conclusion, Vasi presents the main implications for future studies on industry development and social movement outcomes, as well as for the future growth of the renewable energy sector.

Non-Dietary Human Exposure and Risk Assessment (Hardcover): Michael Krolski, Curt Lunchick Non-Dietary Human Exposure and Risk Assessment (Hardcover)
Michael Krolski, Curt Lunchick
R5,457 Discovery Miles 54 570 Ships in 10 - 15 working days

The Protection of Subjects in Human Research rule by the USEPA, including the establishment of the Human Studies Review Board (HSRB), has resulted in changes to both study design and study evaluation processes, particularly with respect to ethical considerations. Non-Dietary Human Exposure andRisk Assessment is a compilation of the presentations given in a symposium of the same name at the 238th ACS National Meeting in Washington D.C. The purpose of the symposium was to provide a forum for scientists from industry, academia, and government to share investigative methods used to generate data for use in non-dietary human risk assessments and to share methodology for performing and evaluating those assessments.
This compilation is intended to provide the reader with a concise overview of the current status of both the scientific and regulatory aspects of non-dietary human exposure and risk assessment as applied to pesticides. It is the hope of the editors that it will also be the starting point for discussions leading to the further refinement of study and risk assessment design, data evaluation, and regulatory harmonization.
Three major areas are covered in this symposium edition. The first area is regulatory issues including the development of the Protection of Subjects in Human Research rule and the HSRB, statistical procedures involved in designing human exposure studies, handling of the data generated in those studies, and quality assurance processes related to worker exposure studies. The second area, study design, includes processes for the identification and recruitment of volunteers for human exposure studies, overviews of several studies that have been recently performed, the development of procedures for evaluating the resulting data by Regulatory Agencies, and efforts towards international cooperation in the generation and use of exposure data. The final area, methodology, includes examples of the development of methods for the analysis of samples generated in non-dietary human exposure studies with particular emphasis on the use of hyphenated techniques and the development of a model for determining greenhouse exposures that is currently being used in Europe.

Plekname van Suider-Afrika (Afrikaans, Hardcover): Peter E. Raper, Lucie A. Moeller, Theodorus du Plessis Plekname van Suider-Afrika (Afrikaans, Hardcover)
Peter E. Raper, Lucie A. Moeller, Theodorus du Plessis
R510 Discovery Miles 5 100 Ships in 6 - 10 working days
The Cost of the Car (Hardcover): Ian East The Cost of the Car (Hardcover)
Ian East
R923 Discovery Miles 9 230 Ships in 10 - 15 working days

The Cost of the Car is a dispassionate but engaging account of the consequences of predicating our habitat on the automobile, largely from a technical point of view. (The author is a former physicist and aerospace engineer.)

Treating transport as an engineering problem, the car is first assessed, in comparison with other options, with regard to efficacy, safety, price, and performance. The cost to the wider economy, community, health, and the environment is then also considered. While the extent of its deficiencies become clear, so does the value we place on privacy and control.

Three short stories attempt to relate the true nature of road accidents, obscure in dry statistics. Each is an account of real events but substitutes fictional characters to protect the individuals concerned. Only in this way can the aftermath be understood, and the full human cost counted.

An introduction to the greenhouse effect and global warming is included, along with a discussion of alternative sources of energy. The root cause of congestion is also explained, along with the nature of the 'modal inversion' that occurred between road and rail in the 1950s. The Cost of the Car represents the first widely accessible collected account of these issues.

Lastly, the author considers alternatives to sprawl which, while preserving the freedom to drive a private car, introduce the liberty not to.

Life Along the Apalachicola River (Paperback): Jim McClellan Life Along the Apalachicola River (Paperback)
Jim McClellan
R486 R450 Discovery Miles 4 500 Save R36 (7%) Ships in 18 - 22 working days
Advanced Mathematical Tools for Control Engineers: Volume 1 - Deterministic Systems (Hardcover): Alex Poznyak Advanced Mathematical Tools for Control Engineers: Volume 1 - Deterministic Systems (Hardcover)
Alex Poznyak
R4,552 Discovery Miles 45 520 Ships in 10 - 15 working days

This book provides a blend of Matrix and Linear Algebra Theory, Analysis, Differential Equations, Optimization, Optimal and Robust Control. It contains an advanced mathematical tool which serves as a fundamental basis for both instructors and students who study or actively work in Modern Automatic Control or in its applications. It is includes proofs of all theorems and contains many examples with solutions.
It is written for researchers, engineers, and advanced students who wish to increase their familiarity with different topics of modern and classical mathematics related to System and Automatic Control Theories
* Provides comprehensive theory of matrices, real, complex and functional analysis
* Provides practical examples of modern optimization methods that can be effectively used in variety of real-world applications
* Contains worked proofs of all theorems and propositions presented

The Revolution Will Not Be Televised - Protest Music After Fukushima (Hardcover): Noriko Manabe The Revolution Will Not Be Televised - Protest Music After Fukushima (Hardcover)
Noriko Manabe
R3,593 Discovery Miles 35 930 Ships in 10 - 15 working days

Nuclear power has been a contentious issue in Japan since the 1950s, and in the aftermath of the Fukushima nuclear power plant disaster, the conflict has only grown. Government agencies and the nuclear industry continue to push a nuclear agenda, while the mainstream media adheres to the official line that nuclear power is Japan's future. Public debate about nuclear energy is strongly discouraged. Nevertheless, antinuclear activism has swelled into one of the most popular and passionate movements in Japan, leading to a powerful wave of protest music. The Revolution Will Not Be Televised: Protest Music After Fukushima shows that music played a central role in expressing antinuclear sentiments and mobilizing political resistance in Japan. Combining musical analysis with ethnographic participation, author Noriko Manabe offers an innovative typology of the spaces central to the performance of protest music-cyberspace, demonstrations, festivals, and recordings. She argues that these four spaces encourage different modes of participation and methods of political messaging. The openness, mobile accessibility, and potential anonymity of cyberspace have allowed musicians to directly challenge the ethos of silence that permeated Japanese culture post-Fukushima. Moving from cyberspace to real space, Manabe shows how the performance and reception of music played at public demonstrations are shaped by the urban geographies of Japanese cities. While short on open public space, urban centers in Japan offer protesters a wide range of governmental and commercial spaces in which to demonstrate, with activist musicians tailoring their performances to the particular landscapes and soundscapes of each. Music festivals are a space apart from everyday life, encouraging musicians and audience members to freely engage in political expression through informative and immersive performances. Conversely, Japanese record companies and producers discourage major-label musicians from expressing political views in recordings, forcing antinuclear musicians to express dissent indirectly: through allegories, metaphors, and metonyms. The first book on Japan's antinuclear music, The Revolution Will Not Be Televised provides a compelling new perspective on the role of music in political movements.

The Elephant Whisperer - My Life with the Herd in the African Wild (Paperback, Young Readers Edition): Lawrence Anthony, Graham... The Elephant Whisperer - My Life with the Herd in the African Wild (Paperback, Young Readers Edition)
Lawrence Anthony, Graham Spence 2
R195 R177 Discovery Miles 1 770 Save R18 (9%) Ships in 5 - 10 working days

A charming, moving account of one man's race to save a herd of elephants.

When South African conservationist Lawrence Anthony was asked to accept a herd of 'rogue' elephants on his Thula Thula game reserve in Zululand, his common sense told him to refuse. But he was the herd's last chance of survival - dangerous and unpredictable, they would be killed if Anthony wouldn't take them in.

As Anthony risked his life to create a bond with the troubled elephants and persuade them to stay on his reserve, he came to realize what a special family they were, from the wise matriarch Nana, who guided the herd, to her warrior sister Frankie, always ready to see off any threat, and their children who fought so hard to survive.

With unforgettable characters and exotic wildlife, this is an enthralling book that will appeal to animal lovers and adventurous souls everywhere.

Theory of the Border (Hardcover): Thomas Nail Theory of the Border (Hardcover)
Thomas Nail
R3,755 Discovery Miles 37 550 Ships in 10 - 15 working days

Despite - and perhaps because of - increasing global mobility, there are more types of borders today than ever before in history. Borders of all kinds define every aspect of social life in the twenty-first century. From the biometric data that divides the smallest aspects of our bodies to the aerial drones that patrol the immense expanse of our domestic and international airspace, we are defined by borders. They can no longer simply be understood as the geographical divisions between nation-states. Today, their form and function has become too complex, too hybrid. What we need now is a theory of the border that can make sense of this hybridity across multiple domains of social life. Rather than viewing borders as the result or outcome of pre-established social entities like states, Thomas Nail reinterprets social history from the perspective of the continual and constitutive movement of the borders that organize and divide society in the first place. Societies and states are the products of bordering, Nail argues, not the other way around. Applying his original movement-oriented theoretical framework "kinopolitics" to several major historical border regimes (fences, walls, cells, and checkpoints), Theory of the Border pioneers a new methodology of "critical limology," that provides fresh tools for the analysis of contemporary border politics.

The Politics of Energy Crises (Hardcover): Eric R.A.N. Smith, Juliet E. Carlisle, Jessica T. Feezell, Kristy E. H. Michaud The Politics of Energy Crises (Hardcover)
Eric R.A.N. Smith, Juliet E. Carlisle, Jessica T. Feezell, Kristy E. H. Michaud
R3,563 Discovery Miles 35 630 Ships in 10 - 15 working days

Energy crises, which amount to painful combinations of energy shortages and soaring prices, have struck the United States several times in recent decades. Each time they have resulted in political and economic shockwaves because, when gasoline becomes more expensive, the American public tends to react with anger and suspicion. Energy crises instantly put related issues at the top of the nation's agenda, sometimes with dramatic consequences for public policy. What can we learn from recent history, particularly as it may predict the role that volatile public opinion will play throughout the energy policy making process? As The Politics of Energy Crises demonstrates, one can discern patterns in politics and policymaking when looking at the cycles of energy crises in the United States. As such it is the first systematic historical study of political conflict, public opinion, and organized interest group and presidential and congressional action on energy issues, starting with the 1973 OPEC boycott and continuing through the present day. By charting the commonalities in political battles during energy crises, the authors make prognoses about what future energy crises will mean for United States policy.

A Short History of Nearly Everything 2.0 (Paperback, Updated Edition): Bill Bryson A Short History of Nearly Everything 2.0 (Paperback, Updated Edition)
Bill Bryson
R440 R393 Discovery Miles 3 930 Save R47 (11%) Ships in 5 - 10 working days

Bill Bryson describes himself as a reluctant traveller, but even when he stays at home, he can't contain his curiosity about the world around him.

A Short History of Nearly Everything 2.0 is the result of his quest to understand everything that has happened from the Big Bang to the rise of civilization – how we got from being nothing at all to what we are today. Now fully updated to include all the latest advances in science, it is more ground-breaking than ever before.

This journey through time and space will inform a new generation of readers, as well as those who read this book on first publication with a new perspective based on what we know now.

Written in his inimitable style, Bryson makes complex subjects fascinating and accessible to everyone with an interest in the world around them.

A Short History of Nearly Everything 2.0 reveals the world in a whole new way.

Deep Geological Disposal of Radioactive Waste, Volume 9 (Hardcover): W. R. Alexander, Linda McKinley Deep Geological Disposal of Radioactive Waste, Volume 9 (Hardcover)
W. R. Alexander, Linda McKinley
R3,451 Discovery Miles 34 510 Ships in 10 - 15 working days

This book presents a critical review of designing, siting, constructing and demonstrating the safety and environmental impact of deep repositories for radioactive wastes. It is structured to provide a broad perspective of this multi-faceted, multi-disciplinary topic: providing enough detail for a non-specialist to understand the fundamental principles involved and with extensive references to sources of more detailed information.
Emphasis is very much on "deep" geological disposal - at least some tens of metres below land surface and, in many cases, many hundred of metres deep. Additionally, only radioactive wastes are considered directly - even though such wastes often contain also significant chemotoxic or otherwise hazardous components. Many of the principles involved are generally applicable to other repository options (e.g. near-surface or on-surface disposal) and, indeed, to other types of hazardous waste.
* Presents a current critical review in designing, siting, constructing and demonsrating the safety and environmental impact of deep repositories for radwaste
* Addresses the fundamental principles of radioactive waste with up-to-date examples and real-world case studies
* Written for a multi-disciplinary audience, with an appropriate level of detail to allow a non-specialist to understand

Documents of the Lewis and Clark Expedition (Hardcover): C. BrĂ­d Nicholson Documents of the Lewis and Clark Expedition (Hardcover)
C. BrĂ­d Nicholson
R2,721 Discovery Miles 27 210 Ships in 10 - 15 working days

Through its extensive use of primary source materials and invaluable contextual notes, this book offers a documented history of one of the most famous adventures in early American history: the Lewis and Clark expedition. This book is the first to situate the Lewis and Clark expedition within the political and scientific ambitions of Thomas Jefferson. It spans a forty-year period in American history, from 1783–1832, covering Jefferson's early interest in trying to organize an expedition to explore the American West through the difficult negotiations of the Louisiana Purchase, the formation of the "Corps of Discovery," the expedition's incredible journey into the unknown, and its aftermath. The story of the expedition is told not just through the journals and letters of Lewis and Clark, but also through the firsthand accounts of the expedition's other members, which included Sacagawea, a Native American woman, and York, an African American slave. The book features more than 100 primary source documents, including letters to and from Jefferson, Benjamin Rush, and others as the expedition was being organized; diary excerpts during the expedition; and, uniquely, letters documenting the lives of Lewis, Clark, Sacagawea, and York after the expedition.

Western Europe 2021 (Hardcover, 23rd edition): Europa Publications Western Europe 2021 (Hardcover, 23rd edition)
Europa Publications
R35,532 Discovery Miles 355 320 Ships in 10 - 15 working days

The definitive survey of the countries and territories of Western Europe, comprising expert analysis and commentary, up-to-date economic and socio-political data and extensive directory information. General Survey Essays by leading experts on the area cover issues of regional importance. Country Surveys Individual chapters on each country, comprising: an introductory survey, containing essays on the geography, history and economy of each country, including a chronology and map. an extensive statistical survey of economic and demographic indicators, including area and population, health and welfare, agriculture, forestry, fishing, mining, industry, finance, trade, transport, tourism, communications media and education. a comprehensive directory of names and contact details covering the most significant political and commercial institutions. Regional Information a directory of research institutes specializing in the region bibliographies of books and periodicals covering the region.

Insect-Plant Biology (Hardcover, 2nd Revised edition): Louis M. Schoonhoven, Joop J. A. van Loon, Marcel Dicke Insect-Plant Biology (Hardcover, 2nd Revised edition)
Louis M. Schoonhoven, Joop J. A. van Loon, Marcel Dicke
R5,238 Discovery Miles 52 380 Ships in 10 - 15 working days

Half of all insect species are dependent on living plant tissues, consuming about 10 per cent of plant annual production in natural habitats and an even greater percentage in agricultural systems, despite sophisticated control measures. Plants possess defences that are effective against almost all herbivorous insect species. Host-plant specialization, observed in over 80 percent of these animals, appears to be an effective adaptation to breach these defence systems. The mechanisms underlying plant defence to invading herbivores on the one side, and insect adaptations to utilize plants for nutrition, defence and shelter on the other, are the main subjects of this book. For plants exposed to insect herbivores, these mechanisms include the activation of defence systems and the emission of chemical signals which may attract natural enemies of the invading herbivores and may even be exploited by neighbouring plants to induce an early defence.

Veldbestuur - Beginsels en Praktyke - Beginsels en praktyke (Afrikaans, Paperback): Frits van Oudtshoorn Veldbestuur - Beginsels en Praktyke - Beginsels en praktyke (Afrikaans, Paperback)
Frits van Oudtshoorn
R390 R348 Discovery Miles 3 480 Save R42 (11%) Ships in 5 - 10 working days

Veld is 'n lewensbelangrike natuurlike hulpbron vir ons aardse bestaan. Sowat 80% van ons mooi land bestaan uit veld. Die grootste deel daarvan word vir vee- en wildboerdery asook vir bewaring van biodiversiteit en vir ontspanning gebruik. Goeie veldbestuur is nodig om grondagteruitgang te stuit en om volhoubare voedselproduksie en bewaring van biodiversiteit te verseker. Maar goeie veldbestuur berus op 'n goeie kennis van ekologiese beginsels en veldbestuurspraktyke, iets wat baie grondgebruikers nie beskore was om te verkry nie. Die boek poog om die nodige kennis te verskaf om grondgebruikers te help om die grond in hul sorg doeltreffend te bestuur - inderdaad 'n reuseverantwoordelikheid. Die insluiting van meer as 380 foto's en illustrasies en die gebruik van maklik verstaanbare taal in Veldbestuur - Beginsels en Praktyke is daarop gemik om die taamlik tegniese onderwerp te vereenvoudig.

Wild Catalina Island - Natural Secrets and Ecological Triumphs (Paperback): Frank J. Hein, Carlos de La Rosa Wild Catalina Island - Natural Secrets and Ecological Triumphs (Paperback)
Frank J. Hein, Carlos de La Rosa
R501 R468 Discovery Miles 4 680 Save R33 (7%) Ships in 18 - 22 working days

A year-round escape for one million annual tourists, Catalina Island is gaining popularity as a world-class eco-destination. Eighty-eight percent of the island is under the watch of the Catalina Island Conservancy, which preserves, manages and restores the island's unique wild lands. Bison, foxes and bald eagles are its best-known inhabitants, but Catalina is home to more than sixty other animal and plant species that exist nowhere else on earth. And they are all within the boundaries of one of the world's most populous regions: Los Angeles County. Biologists Frank Hein and Carlos de la Rosa present a highly enjoyable tour through the fascinating origins, mysterious quirks and ecological victories of one of the West Coast's most remarkable places.

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