quaternary environmental change in the tropics

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Quaternary Environmental Change In The Tropics

Author : Sarah E. Metcalfe
ISBN : 9781118336175
Genre : Science
File Size : 79. 9 MB
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The global climate changes that led to the expansion and contraction of high latitude ice sheets during the Quaternary period were associated with equally dramatic changes in tropical environments. These included shifts in vegetation zones, changes in the hydrology and ecology of lakes and rivers, and fluctuations in the size of mountain glaciers and sandy deserts. Until recently it was thought that such changes were triggered by fluctuations in the distribution of polar ice cover. Now there is increasing recognition that the tropics themselves have acted as drivers of global climate change over a range of timescales. The aim of Quaternary Environmental Change in the Tropics is to provide a synthesis of the changes that occurred in tropical terrestrial and marine systems during the Pleistocene and Holocene, complementing data-derived reconstructions with output from state-of-the-art climate models. It is targeted at final-year undergraduate students and research specialists, but will provide an introduction to tropical Quaternary research for a variety of other readers.

Landscape Evolution Neotectonics And Quaternary Environmental Change In Southern Cameroon

Author : Jürgen Runge
ISBN : 9780415677356
Genre : Nature
File Size : 71. 13 MB
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Founded in 1966, the internationally recognized and acclaimed Series ‘Palaeoecology of Africa’ publishes interdisciplinary scientific papers on landscape evolution and on former environments of the African continent. Beginning with topics such as changes in climate and vegetation cover, the papers expand horizons and interconnections to various types of environmental dynamics from the Cainozoic up to the present; moreover, the aspect of human influence since the Late Quaternary is related to many of the areas studied. Volume 31 presents four comprehensive papers on long- and short-term processes of landscape evolution (geological history, neotectonics and proxy Quaternary alluvia), as well as a recent regional perspective on environmental problems in Southern Cameroon. The book acts as a showcase for successful North-South cooperation and capacity building for empowering African Universities. It is problem oriented and applied, and illustrates how scientific and interdisciplinary cooperation can work. In the framework of the German Research Foundation’s (DFG, Deutsche Forschungsgemeinschaft) funded "Rain Forest Savanna Contact" project (2003-2009) two abbreviated English versions of PhD theses are here published, one by J. Eisenberg on neotectonics and the other by M. Sangen on river sediments in rain forest-savanna transitional zones. Complementary articles are an introduction on geological history, by B. Kankeu et al. and a paper on environmental risks by M. Tchindjang et al., together these complete the results of this joint German-Cameroonian research project. This book will be of interest to all concerned with ecosystems dynamics, tropical forests, savannas and related development problems of Third World countries, especially regional planners, ecologists, botanists, earth scientists and students of the Quaternary (e.g. LGM and Holocene ecosystem dynamics, Global Change). It will be valuable for advanced undergraduates and postgraduates as a reference for new research articles on the topic of long‐term geologic‐tectonic and Quaternary landscape evolution in an up‐to‐now not well explored marginal area of the Western Congo basin.

Evolution And Environment In Tropical America

Author : Jeremy B. C. Jackson
ISBN : 0226389448
Genre : Science
File Size : 76. 94 MB
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How were the tropical Americas formed? This ambitious volume draws on extensive, multidisciplinary research to develop new views of the geological formation of the isthmus linking North and South America and of the major environmental changes that reshaped the Neotropics to create its present-day marine and terrestrial ecosystems. Recent discoveries show that dramatic changes in climate and ocean circulation can occur very quickly, and that ecological communities respond just as rapidly. Abrupt changes in the composition of fossil assemblages, formerly dismissed as artifacts of a poor fossil record, now are seen as accurate records of swift changes in the composition of ocean communities. The twenty-four contributors use current work in paleontology, geology, oceanography, anthropology, ecology, and evolution to paint this challenging portrait of rapid environmental and evolutionary change. Their conclusions argue for a revision of existing interpretations of the fossil record and the processes—including invading Eurasian peoples—that have produced it.

Palaeohydrology And Environmental Change

Author : Gerardo Benito
ISBN : 0471984655
Genre : Nature
File Size : 62. 87 MB
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Palaeohydrology and Environmental Change presents the most recent advances in the study of global changes in the hydrological regime during the last 20000 years. The book brings together new contributions; on regional palaeohydrology with case studies from all over the world; and on new methodologies and techniques used on palaeohydrological reconstructions. There are several key points that make this book an essential review to the international scientific community: * The major emphasis is on areas very sensitive to climate changes such as the Mediterranean, Tundra regions and the Tropical Zones of Asia, Africa and America. * New interdisciplinary methodologies in reconstructing palaeohydrological changes including palaeoecology, pollen and lichen analysis, identification of anthropogenic stressors and changes in climate circulation regimes. * Modelling studies; conceptual and mesoscale models for reconstructing palaeoenvironments during the Quaternary. This book will be a valuable reference work for all professionals and students interested in quaternary environmental, climatic and hydrological history including those in the fields of geology, geography, hydrology, biogeography, archaeology, and environmental sciences.

Tropical Rainforest Responses To Climatic Change

Author : Mark Bush
ISBN : 9783642053832
Genre : Science
File Size : 66. 61 MB
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This updated and expanded second edition of a much lauded work provides a current overview of the impacts of climate change on tropical forests. The authors also investigate past, present and future climatic influences on the ecosystems with the highest biodiversity on the planet. Tropical Rainforest Responses to Climatic Change, Second Edition, looks at how tropical rain forest ecology is altered by climate change, rather than simply seeing how plant communities were altered. Shifting the emphasis on to ecological processes, e.g. how diversity is structured by climate and the subsequent impact on tropical forest ecology, provides the reader with a more comprehensive coverage. A major theme of the book is the interaction between humans, climate and forest ecology. The authors, all foremost experts in their fields, explore the long term occupation of tropical systems, the influence of fire and the future climatic effects of deforestation, together with anthropogenic emissions. Incorporating modelling of past and future systems paves the way for a discussion of conservation from a climatic perspective, rather than the usual plea to stop logging. This second edition provides an updated text in this rapidly evolving field. The existing chapters are revised and updated and two entirely new chapters deal with Central America and the effect of fire on wet forest systems. In the first new chapter, the paleoclimate and ecological record from Central America (Lozano, Correa, Bush) is discussed, while the other deals with the impact of fire on tropical ecosystems. It is hoped that Jonathon Overpeck, who has been centrally involved in the 2007 and 2010 IPCC reports, will provide a Foreword to the book.

Late Quaternary Environmental Change And The Impact Of Melanesian Colonisation In New Caledonia

Author : Janelle Stevenson
ISBN : UCSD:31822029548401
Genre : Nature
File Size : 20. 77 MB
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The Quaternary Period In The United States

Author : Alan R. Gillespie
ISBN : 0444514716
Genre : Science
File Size : 73. 22 MB
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