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Many geochemists focus on natural systems with less emphasis on the human impact on those systems. Environmental chemists frequently approach their subject with less consideration of the historical record than geoscientists. The field of environmental geochemistry combines these approaches to address questions about the natural environment and anthropogenic effects on it. Eby provides students with a solid foundation in basic aqueous geochemistry before discussing the important role carbon compounds, isotopes, and minerals play in environmental issues. He then guides students through how these concepts apply to problems facing our atmosphere, continental lands, and oceans. Rather than broadl...
"This book presents quantitative treatments of a wide range of fundamental problems related to geochemistry and geology. It shows that trace elements, isotopes, and equations are integrative tools in modern geochemistry for studying various Earth processes." -- Back cover.
The time is ripe to investigate similarities and differences in the course of social evolution in different animals. This book brings together renowned researchers working on sociality in different animals to deal with the key questions of sociobiology. For the first time, they compile the evidence for the importance of ecological factors in the evolution of social life, ranging from invertebrate to vertebrate social systems, and evaluate its importance versus that of relatedness.
Earth is undergoing constant changes from the beginning of its formation. After the formation of the planet around 4.54 billion years ago, it has been changing ever since. In the beginning, it was in a liquid gas form which eventually cooled down and the surface took a hard-solid form during the time period of nearly 2 billion years after the creation of the earth. First life on the surface of earth was created about 3.8 billion years ago. And only less than 5 million years ago Homo sapiens developed. Within this really short period of time of existence compared to the age of the earth, mankind has been developing fast. And the main fuel of this development has been science and the technolog...
Wastewater treatment technology is undergoing a profound transformation due to the fundamental changes in regulations governing the discharge and disposal of h- ardous pollutants. Established design procedures and criteria, which have served the industry well for decades, can no longer meet the ever-increasing demand. Toxicity reduction requirements dictate in the development of new technologies for the treatment of these toxic pollutants in a safe and cost-effective manner. Fo- most among these technologies are electrochemical processes. While electrochemical technologies have been known and utilized for the tre- ment of wastewater containing heavy metal cations, the application of these p- cesses is only just a beginning to be developed for the oxidation of recalcitrant organic pollutants. In fact, only recently the electrochemical oxidation process has been rec- nized as an advanced oxidation process (AOP). This is due to the development of boron-doped diamond (BDD) anodes on which the oxidation of organic pollutants is mediated via the formation of active hydroxyl radicals.
Agroecology is the science of applying ecological concepts and principles to the design, development, and management of sustainable agricultural systems. Agroecological economics, a subsection of agricultural economics, evaluates the ecological consequences of agricultural methods on the economic scale. Agroecological economics considers green engineering as a means of measurement. As the environmental movement unfolds, the importance of biodiversity and long-term sustainability are indisputable. Progress depends on determining the economic viability of terrestrial agroecosystems. What is lacking is the analysis needed to bring biodiverse and sustainable systems to fruition. Agroecological E...
This book provides a comprehensive introduction to radiogenic and stable isotope geochemistry. Beginning with a brief overview of nuclear physics and nuclear origins, it then reviews radioactive decay schemes and their use in geochronology. A following chapter covers the closely related techniques such as fission-track and carbon-14 dating. Subsequent chapters cover nucleosynthetic anomalies in meteorites and early solar system chronology and the use of radiogenic isotopes in understanding the evolution of the Earth’s mantle, crust, and oceans. Attention then turns to stable isotopes and after reviewing the basic principles involved, the book explores their use in topics as diverse as mantle evolution, archeology and paleontology, ore formation, and, particularly, paleoclimatology. A following chapter explores recent developments including unconventional stable isotopes, mass-independent fractionation, and isotopic ‘clumping’. The final chapter reviews the isotopic variation in the noble gases, which result from both radioactive decay and chemical fractionations.
Discussing the influence of environmental factors on both living and nonliving entities, this text places special emphasis on human health problems such as mutagenesis, teratogenesis and carcinogenesis, as well as looking at the major global issues of energy conservation, acid rain and greenhouse gases.
Ecology is a branch of biology concerned with the study of interactions and interrelationships between organisms and their environment, as well as with other organisms. Ecosystems are vast systems of organisms, their communities, and the environmental factors that have an influence on these. Several processes control the flux of matter and energy through an environment, such as pedogenesis, nutrient cycling, primary production and niche construction. The study of ecology focuses on such processes, as well as ecological succession, distribution of organisms and biodiversity, among others. Ecosystems sustain life, regulate climate and produce economically crucial materials, such as biomass. The regulation of water filtration, erosion control, flood protection, global biogeochemical cycles, etc. is also sustained by the ecosystem. The book aims to shed light on some of the unexplored aspects of ecology. Some of the diverse topics covered in this book address the varied branches that fall under this category. It aims to serve as a resource guide for students and experts alike and contribute to the growth of the discipline.