Studies of prehistoric exchange of goods provide information about the types of economic interaction, social organization, or political structures in which prehistoric peoples were engaged. Long-distance exchange is a special situation where the materials exchanged crossed significant boundaries, whether they were geographic, social, political, or otherwise. By examining the types and quantities of goods exchanged, along with the directions and distances they moved, archaeologists are able to examine the dynamic properties of exchange systems, i.e., how they operate and why they undergo change.

The purpose of this volume is to present a number of case studies of long-distance exchange from around the world which demonstrate the use of geochemical analysis of artifacts to find evidence of exchange. More important than the use of analytical technique employed or the types of artifacts studied are the interpretations themselves which illustrate that exchange studies are maturing and helping archaeologists to develop more accurate models of exchange.

How much has human history been influenced by the earth and its processes? This volume in the Science 101 series describes how both slow changes and rapid, violent, ones have impacted the development of civilizations throughout history. Slow changes include variations in climate, progressive development of types of tools and sources of energy, and changes in the types of food that people consume. Violent changes include volcanic eruptions such as the one at Toba 75,000 years ago, which may have caused diversification of people into different races, and the eruption of Santorini in 1640 BC, which may have destroyed Minoan civilization. Other disasters are Hurricane Katrina in 2005 and the tsunami in the Indian Ocean in 2004. Earth Science and Human History 101 describes basic principles of geology and shows how the earth affected history and is affecting present events. The volume has four sections: BLProcesses in the atmosphere, oceans, and rivers BLPlate tectonics BLThe conflict between the evidence for evolution during the long history of the earth and the beliefs of creationists BLResources and the environment The volume includes a glossary, numerous illustrations, and a bibliography of works useful for further research.

Authored by world-class scientists and scholars, the Handbook of Natural Resources, Second Edition, is an excellent reference for understanding the consequences of changing natural resources to the degradation of ecological integrity and the sustainability of life. Based on the content of the bestselling and CHOICE awarded Encyclopedia of Natural Resources, this new edition demonstrates the major challenges that the society is facing for the sustainability of all wellbeing on planet Earth. The experience, evidence, methods, and models used in studying natural resources are presented in six stand-alone volumes, arranged along the main systems: land, water, and air. It reviews state-of-the-art knowledge, highlights advances made in different areas, and provides guidance for the appropriate use of remote sensing data in the study of natural resources on a global scale. The six volumes in this set cover: Terrestrial Ecosystems and Biodiversity; Landscape and Land Capacity; Wetlands and Habitats; Fresh Water and Watersheds; Coastal and Marine Environments; and finally Atmosphere and Climate. Written in an easy-to-reference manner, the Handbook of Natural Resources, Second Edition, as a complete set, is essential for anyone looking for a deeper understanding of the science and management of natural resources. Public and private libraries, educational and research institutions, scientists, scholars, and resource managers will benefit enormously from this set. Individual volumes and chapters can also be used in a wide variety of both graduate and undergraduate courses in environmental science and natural science courses at different levels and disciplines, such as biology, geography, Earth system science, ecology, etc.

After the 1998 flood of the Yangtze River, one of the world s most important rivers, environmental experts realized that, to control flooding, much more attention must be paid to vegetation cover on bare lands, thin forest land, and shrub-covered land in mountain areas. In 1999, an environmental monitoring project of the forests in 11 provinces of the Yangtze River basin was undertaken. This book reports on soil loss prediction and the successful practices of soil loss control in eastern China in recent years.

The book requires only rudimentary physics knowledge but ability to program computers creatively and to keep the mind open to simple and not so simple models, based in individuals, for the living world around us.
* Interdisciplinary coverage
* Research oriented
* Contains and explains programs
* Based on recent discoveries
* Little special knowledge required besides programming
* Suitable for undergraduate and graduate research projects

Agricultural ecology, or agroecology, deals in general with the structure and function of agroecosystems at different levels of resolution. In this text/reference, the authors describe in terms of agroecology the tropical environments of sub-Saharan Africa, Southeast Asia, and Latin and Central America, focusing on production and management systems unique to each region.

Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 138.Subduction zones helped nucleate and grow the continents, they fertilize and lubricate the earth's interior, they are the site of most subaerial volcanism and many major earthquakes, and they yield a large fraction of the earth's precious metals. They are obvious targets for study--almost anything you learn is likely to impact important problems--yet arriving at a general understanding is notoriously difficult: Each subduction zone is distinct, differing in some important aspect from other subduction zones; fundamental aspects of their mechanics and igneous processes differ from those in other, relatively well-understood parts of the earth; and there are few direct samples of some of their most important metamorphic and metasomatic processes. As a result, even first-order features of subduction zones have generated conflict and apparent paradox. A central question about convergent margins, for instance--how vigorous magmatism can occur where plates sink and the mantle cools--has a host of mutually inconsistent answers: Early suggestions that magmatism resulted from melting subducted crust have been emphatically disproved and recently just as emphatically revived; the idea that melting is fluxed by fluid released from subducted crust is widely held but cannot explain the temperatures and volatile contents of many arc magmas; generations of kinematic and dynamic models have told us the mantle sinks at convergent margins, yet strong evidence suggests that melting there is often driven by upwelling. In contrast, our understanding ofwhy volcanoes appear at ocean ridges and "hotspots"--although still presenting their own chestnuts--are fundamentally solved problems.

Sediments and Ecohyraulics is comprised of papers submitted to the 6th International Conference on Cohesive Sediments (INTERCOH 2005) held in Saga, Japan, September 2005. The papers are divided into two major categories. The first is basic processes, including erosion, settling, flocculation, and consolidation. The second major catagory is application of the understanding of cohesive sediments to address specific issues, including waterway and part management, fluid mud behavior, and contaminiated sediment management.
*Provides an up-to-date resource of the present knowledge of cohesive sediment transport processes
*Contains practical solutions on cohesive transport problems
*Presents information on managing cohesive sediments