Dissertation Abstracts International PDF Download

Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 918

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Author: Jürgen Runge
Publisher: CRC Press
ISBN: 1000431150
Category : Science
Languages : en
Pages : 412

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Book Description
This book celebrates the relaunch of the African Pollen Database, presents state-of-the-art of modern and ancient pollen data from sub-Saharan Africa, and promotes Open Access science. Pollen grains are powerful tools for the study of past vegetation dynamics because they preserve well within sedimentary deposits and have a huge diversity in ornamentation that allows different taxa to be determined. The reconstruction of past vegetation from the examination of ancient pollen records thus can be used to characterize the nature of past landscapes (e.g. abundance of forests vs. grasslands), provide insights into changes in biodiversity, and gain empirical evidence of vegetation response to climatic change and human activity. In this, the 35th Volume of "Palaeoecology of Africa", we bring together new data and extensive synthetic reviews to provide novel insights into the relationships between human evolution, human activity, climate change and vegetation dynamics during the Quaternary, the last 2.6 million years. Current and ongoing climate and land-use change is exerting pressure on modern vegetation formations and threatening the livelihoods and wellbeing of many peoples in Africa. In this book the focus is on the Quaternary because it is during this geological period that the modern vegetation formations developed into their current configurations against a backdrop of high magnitude global climate change (glacial-interglacial cycles), human evolution, and a growing human land-use footprint. In this book the latest information is presented and collated from around the African continent to parameterize past vegetation states, identify the drivers of vegetation change, and assess the vegetation resilience to change. To achieve this research from two broad themes are covered: (i) the present is the key to the past (i.e. studies which improve our understanding of modern environments so that we can better interpret evidence from the past), and (ii) the past is the key to the future (i.e. studies which unlock information on how and why vegetation changed in the past so one can better anticipate trajectories of future change). This Open Access book will provide a strong foundation for future research exploring past ecological, environmental and climatic change within Africa and the surrounding islands. The book is organized regionally (covering western, eastern, central, and southern Africa) and it contains specialized articles focused on particular topics (such as modern pollen-vegetation relationships and fire as a driver of vegetation change), as well as regional and pan-African syntheses drawing together decades of research to assess key scientific questions (including the role of climate in driving vegetation change and the role of vegetation change in human evolution). These articles will be useful to students and teachers from high school to the highest level of university who are interested in the origins and dynamics of vegetation in Africa. Furthermore, it is also meant to provide societally relevant information that can act as an inspiration for the development of sustainable management practices for the future.

Author: B. Huntley
Publisher: Springer Science & Business Media
ISBN: 940093081X
Category : Science
Languages : en
Pages : 808

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Book Description
The analysis of vegetation history is one of the prime objectives for vegetation scientists. In order to understand the recent composition of local floras and plant communities a second knowledge of species com position during recent millenia is essential. With the present concern over climate changes, due to human activities, an understanding of past vegeta tion distribution becomes even more important, since the correlation between climate and vegetation can often be used to predict possible impacts to crops and forests. I was very fortunate to receive the help of Drs. Webb and Huntley to compile this volume on vegetation history. They have collated an impres sive set of papers which together give an account of the vegetation history of most of the continents during the late-Tertiary and Quaternery periods. There are, however, gaps in the coverage achieved, most notably Africa, and Asia apart from Japan. The information in this book will nonetheless certainly be used widely by vegetation scientists for the regions covered in the book and much of it has relevance to the areas not explicitly described. The authors of the individual chapters have done their best to cover recent topics of interest as well as established facts. It is intended that a separate volume will be produced in the near future covering the vegetation history of Africa and Asia. I thank the editors of It fits well into the this volume for their commendable achievement.

Author: Xiangjun Liu
Publisher: Frontiers Media SA
ISBN: 2889745074
Category : Science
Languages : en
Pages : 263

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Author: Navnith Kumaran
Publisher: Elsevier
ISBN: 0323900860
Category : Science
Languages : en
Pages : 693

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Book Description
Holocene Climate Change and Environment presents detailed, diverse case studies from a range of environmental and geological regions on the Indian subcontinent which occupies the central part of the monsoon domain. This book examines Holocene events at different time intervals based on a new, high-resolution, multi-proxy records (pollen, spores, NPP, diatoms, grain size characteristics, total organic carbon, carbon/nitrogen ratio, stable isotopes) and other physical tools from all regions of India. It also covers new facilities in chronological study and luminescence dating, which have added a new dimension toward understanding the Holocene glacial retreats evolution of coastal landforms, landscape dynamics and human evolution. Each chapter is presented with a unified structure for ease of access and application, including an introduction, geographic details, field work and sampling techniques, methods, results and discussion. This detailed examination of such an important region provides key insights in climate modeling and global prediction systems. - Provides data and research from environmentally and geologically diverse regions across the Indian subcontinent - Presents an integrated and interdisciplinary approach, including considerations of human impacts - Features detailed case studies that include methods and data, allowing for applications related to research and global modeling

Author:
Publisher:
ISBN:
Category : Micropaleontology
Languages : en
Pages : 434

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Author: Paul A. Delcourt
Publisher: Springer Science & Business Media
ISBN: 1461247403
Category : Science
Languages : en
Pages : 451

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Book Description
The synthesis presented in this volume is a direct outgrowth of our ten-year FORMAP Project (Forest Mapping Across Eastern North America from 20,000 yr B.P. to the Present). Many previous research efforts in paleoecology have used plant-fossil evidence as proxy information for primarily geologic or climatic reconstructions or as a bio stratigraphic basis for correlation of regional events. In contrast, in this book, we deal with ecological questions that require a holistic perspective that integrates the interactions of biota with their dynamically changing environments over time scales up to tens of thousands of years. In the FORMAP Project, our major research objective has been to use late-Quaternary plant-ecological data sets to evaluate long-term patterns and processes in forest de velopment. In order to accomplish this objective, we have prepared subcontinent-scale calibrations that quantitatively relate the production and dispersal of arboreal pollen to dominance in the vegetation for the major tree types of eastern North America. Quantification of pollen-vegetation relationships provides a basis for developing quan titative plant-ecological data sets that allow further ecological analysis of both individual taxa and forest communities through time. Application of these calibrations to fossil pollen records for interpreting forest history thus represents a fundamental step beyond traditional summaries based upon pollen percentages.

Author:
Publisher: BRILL
ISBN: 9004392084
Category : History
Languages : en
Pages : 407

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Book Description
Environment and Society in the Long Late Antiquity brings together scientific, archaeological and historical evidence on the interplay of social change and environmental phenomena at the end of Antiquity and the dawn of the Middle Ages, covering the period ca. 300-800 AD. It gives a new impetus to the study of the environmental history of this crucial period of transition between two major epochs in premodern history. The volume contains both systematic overviews of the previous scholarship and available data, as well as a number of interdisciplinary case studies. It covers a wide range of topics, including the histories of landscape, climate, disease and earthquakes, all intertwined with social, cultural, economic and political developments. Contributors are Daniel Abel-Schaad , Francesca Alba-Sánchez, Flavio Anselmetti, José Antonio López-Sáez, Daniel Ariztegui, Brunhilda Brushulli, Yolanda Carrión Marco, Alexandra Chavarría, Petra Dark, Carmen Fernández Ochoa, Martin Finné, Asuunta Florenzano, Ralph Fyfe,Didier Galop, Benjamin Graham, John Haldon, Kyle Harper, Richard Hodges, Adam Izdebski, Katarina Kouli, Inga Labuhn, Tamara Lewit, Anna Maria Mercuri, Alessia Masi, Lucas McMahon, Lee Mordechai, Mario Morellón, Timothy Newfield, Almudena Orejas Saco del Valle, Leonor Peña-Chocarro, Sebastián Pérez-Díaz, Eleonora Regattieri, Stephen Rippon, Neil Roberts, Laura Sadori, Abigail Sargent, Gaia Sinopoli, Paolo Squatriti, Giovanni Stranieri, Raymond van Dam, Bernd Wagner, Mark Whittow, Penelope Wilson, Jessie Woodbridge. See inside the book.

Author: Milan Chytrý
Publisher: Springer
ISBN: 3319631810
Category : Science
Languages : en
Pages : 471

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Book Description
This book provides basic information on the botanical diversity in the Czech Republic and relates the patterns in flora and vegetation to environmental factors, biogeographical history and human impact. Focusing on vascular plants, bryophytes and lichens, it summarizes the data on taxonomic diversity and provides details of relict, endemic, rare, alien and other biogeographically important species. Main vegetation types are characterized in terms of their structure, distribution, ecology and dynamics, emphasizing the long-term vegetation changes since the late Pleistocene, historical impact of humans on vegetation and current changes in vegetation including the impact of alien species. Special attention is paid to the conservation of threatened plant species and their habitats and ecological restoration. An account of the history of botanical research in this country is also provided. The book is illustrated with numerous maps, graphs and photographs of plant species and communities. The book is an essential reference for any biogeographer, botanist and plant ecologist who is working in Central Europe or is searching for both general and more specific information on this part of the world.

Author: Valentí Rull
Publisher: Frontiers Media SA
ISBN: 2889456870
Category :
Languages : en
Pages : 288

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Book Description
This Research Topic commemorates the centenary of the first quantitative pollen diagram by Lennart von Post, the founder of paleoecological palynology. The main aim is to provide a thorough view of the use of palynology in aspects such as the reconstruction of Quaternary vegetation and environmental changes, the role of natural and anthropogenic drivers in the development of the Quaternary vegetation, the shaping of present-day ecological and biogeographical patterns, the potential application of this knowledge in biodiversity conservation and landscape restoration and the development of new methods of pollen analysis and data management. The Research Topic is subdivided into four main conceptual parts, namely (1) modern analog studies; (2) land cover estimates from pollen data; (3) vegetation dynamics reconstructions from Europe, North and South America, Africa and Oceania; and (4) large-scale reviews and meta-analyses. Hopefully, this Research Topic will serve to appraise the state of the art of modern palynology and highlight the usefulness of this discipline in long-term ecological research.