Dissertation Abstracts International

Dissertation Abstracts International PDF Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 960

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Quaternary Dating Methods

Quaternary Dating Methods PDF Author: Mike Walker
Publisher: John Wiley & Sons
ISBN: 1118700090
Category : Science
Languages : en
Pages : 311

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Book Description
This introductory textbook introduces the basics of dating, the range of techniques available and the strengths and limitations of each of the principal methods. Coverage includes: the concept of time in Quaternary Science and related fields the history of dating from lithostratigraphy and biostratigraphy the development and application of radiometric methods different methods in dating: radiometric dating, incremental dating, relative dating and age equivalence Presented in a clear and straightforward manner with the minimum of technical detail, this text is a great introduction for both students and practitioners in the Earth, Environmental and Archaeological Sciences. Praise from the reviews: "This book is a must for any Quaternary scientist." SOUTH AFRICAN GEOGRAPHICAL JOURNAL, September 2006 “...very well organized, clearly and straightforwardly written and provides a good overview on the wide field of Quaternary dating methods...” JOURNAL OF QUATERNARY SCIENCE, January 2007

Paleoclimate, Global Change and the Future

Paleoclimate, Global Change and the Future PDF Author: Keith D. Alverson
Publisher: Springer Science & Business Media
ISBN: 3642558283
Category : Science
Languages : en
Pages : 242

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Book Description
This book provides a synthesis of the past decade of research into global changes that occurred in the earth system in the past. Focus is achieved by concentrating on those changes in the Earth's past environment that best inform our evaluation of current and future global changes and their consequences for human populations. The book stands as a ten year milestone in the operation of the Past Global Changes (PAGES) Project of the International Geosphere-Biosphere Programme (IGBP). It seeks to provide a quantitative understanding of the Earth’s environment in the geologically recent past and to define the envelope of natural environmental variability against which anthropogenic impacts on the Earth System may be assessed. A set of color overhead transparencies based on the figures in the book is available free on the PAGES website (www.pages-igbp.org) for use in teaching and lecturing.

Holocene Climate Variability

Holocene Climate Variability PDF Author: E. Jansen
Publisher: Elsevier Science & Technology
ISBN:
Category : Nature
Languages : en
Pages : 224

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Book Description
Provides an update of results on the record of past ocean variability since the end of the ice age. This work gives an overview of many aspects of natural climate variability and give both scholars and students a means of keeping up to date on recent developments in the field.

Assessment of Climate Change in the Southwest United States

Assessment of Climate Change in the Southwest United States PDF Author: Gregg Garfin
Publisher:
ISBN: 9781597264204
Category : Agriculture
Languages : en
Pages : 529

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Fire Ecology and Management: Past, Present, and Future of US Forested Ecosystems

Fire Ecology and Management: Past, Present, and Future of US Forested Ecosystems PDF Author: Cathryn H. Greenberg
Publisher: Springer Nature
ISBN: 3030732673
Category : Science
Languages : en
Pages : 513

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Book Description
This edited volume presents original scientific research and knowledge synthesis covering the past, present, and potential future fire ecology of major US forest types, with implications for forest management in a changing climate. The editors and authors highlight broad patterns among ecoregions and forest types, as well as detailed information for individual ecoregions, for fire frequencies and severities, fire effects on tree mortality and regeneration, and levels of fire-dependency by plant and animal communities. The foreword addresses emerging ecological and fire management challenges for forests, in relation to sustainable development goals as highlighted in recent government reports. An introductory chapter highlights patterns of variation in frequencies, severities, scales, and spatial patterns of fire across ecoregions and among forested ecosystems across the US in relation to climate, fuels, topography and soils, ignition sources (lightning or anthropogenic), and vegetation. Separate chapters by respected experts delve into the fire ecology of major forest types within US ecoregions, with a focus on the level of plant and animal fire-dependency, and the role of fire in maintaining forest composition and structure. The regional chapters also include discussion of historic natural (lightning-ignited) and anthropogenic (Native American; settlers) fire regimes, current fire regimes as influenced by recent decades of fire suppression and land use history, and fire management in relation to ecosystem integrity and restoration, wildfire threat, and climate change. The summary chapter combines the major points of each chapter, in a synthesis of US-wide fire ecology and forest management into the future. This book provides current, organized, readily accessible information for the conservation community, land managers, scientists, students and educators, and others interested in how fire behavior and effects on structure and composition differ among ecoregions and forest types, and what that means for forest management today and in the future.

The Ecological Importance of Mixed-Severity Fires

The Ecological Importance of Mixed-Severity Fires PDF Author: Dominick A. DellaSala
Publisher: Elsevier
ISBN: 0128027606
Category : Nature
Languages : en
Pages : 450

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Book Description
The Ecological Importance of High-Severity Fires, presents information on the current paradigm shift in the way people think about wildfire and ecosystems. While much of the current forest management in fire-adapted ecosystems, especially forests, is focused on fire prevention and suppression, little has been reported on the ecological role of fire, and nothing has been presented on the importance of high-severity fire with regards to the maintenance of native biodiversity and fire-dependent ecosystems and species. This text fills that void, providing a comprehensive reference for documenting and synthesizing fire's ecological role. - Offers the first reference written on mixed- and high-severity fires and their relevance for biodiversity - Contains a broad synthesis of the ecology of mixed- and high-severity fires covering such topics as vegetation, birds, mammals, insects, aquatics, and management actions - Explores the conservation vs. public controversy issues around megafires in a rapidly warming world

The End of Desertification?

The End of Desertification? PDF Author: Roy H. Behnke
Publisher: Springer
ISBN: 364216014X
Category : Science
Languages : en
Pages : 556

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Book Description
The question in the title of this book draws attention to the shortcomings of a concept that has become a political tool of global importance even as the scientific basis for its use grows weaker. The concept of desertification, it can be argued, has ceased to be analytically useful and distorts our understanding of social-environmental systems and their resiliency, particularly in poor countries with variable rainfall and persistent poverty. For better policy and governance, we need to reconsider the scientific justification for international attempts to combat desertification. Our exploration of these issues begins in the Sahel of West Africa, where a series of severe droughts at the end of the 20th century led to the global institutionalization of the idea of desertification. It now seems incontrovertible that these droughts were not caused primarily by local land use mismanagement, effectively terminating a long-standing policy and scientific debate. There is now an opportunity to treat this episode as an object lesson in the relationship between science, the formation of public opinion and international policy-making. Looking beyond the Sahel, the chapters in this book provide case studies from around the world that examine the use and relevance of the desertification concept. Despite an increasingly sophisticated understanding of dryland environments and societies, the uses now being made of the desertification concept in parts of Asia exhibit many of the shortcomings of earlier work done in Africa. It took scientists more than three decades to transform a perceived desertification crisis in the Sahel into a non-event. This book is an effort to critically examine that experience and accelerate the learning process in other parts of the world.

Climatic Variability in Sixteenth-Century Europe and Its Social Dimension

Climatic Variability in Sixteenth-Century Europe and Its Social Dimension PDF Author: Christian Pfister
Publisher: Springer Science & Business Media
ISBN: 9401592594
Category : Science
Languages : en
Pages : 352

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Book Description
A multidecadal cooling is known to have occurred in Europe in the final decades of the sixteenth-century. It is still open to debate as to what might have caused the underlying shifts in atmospheric circulation and how these changes affected societies. This book is the fruit of interdisciplinary cooperation among 37 scientists including climatologists, hydrologists, glaciologists, dendroclimatologists, and economic and cultural historians. The known documentary climatic evidence from six European countries is compared to results of tree-ring studies. Seasonal temperature and precipitation are estimated from this data and monthly mean surface pressure patterns in the European area are reconstructed for outstanding anomalies. Results are compared to fluctuations of Alpine glaciers and to changes in the frequency of severe floods and coastal storms. Moreover, the impact of climate change on grain prices and wine production is assessed. Finally, it is convincingly argued that witches at that time were burnt as scapegoats for climatic change.

Sustainability of Engineered Rivers In Arid Lands

Sustainability of Engineered Rivers In Arid Lands PDF Author: Jurgen Schmandt
Publisher: Cambridge University Press
ISBN: 1108417035
Category : Medical
Languages : en
Pages : 305

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Book Description
Interdisciplinary volume considers how nine arid/semi-arid river basins with irrigated agriculture will survive future climate change, siltation, and decreased flow.