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 : 51. 55 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 : 45. 19 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 : 31. 62 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.

Tropical Rainforest Responses To Climatic Change

Author : Mark Bush
ISBN : 9783642053832
Genre : Science
File Size : 75. 51 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.

Geomorphology In The Tropics

Author : Michael Frederic Thomas
ISBN : 0471930350
Genre : Science
File Size : 57. 99 MB
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Many advances have been made in our understanding of tropical geomorphology in recent decades, but the field remains relatively neglected. With current widespread concern about the damage to tropical ecosystems, it is time for a new study of geomorphology in the tropics. The author endeavours to provide a tropical perspective on geomorphology, rather than a compartmentalised "tropical" geomorphology. The importance of weathering and the materials of the weathered mantle in determining the outcome of erosional processes is emphasised. The impact of Quaternary climate changes in creating superficial forms and deposits is stressed as being fundamental in the tropics as in other parts of the world. Nevertheless, the tropical landscape exhibits forms and deposits that have evolved over long time-periods in the absence of frost and ice, justifying an evolutionary approach to the long-term development of landscape. The book is important to a broad spectrum of earth science interests including geotechnical and engineering studies, and soil science, as well as to students of geomorphology. People working in the tropics will encounter the processes and products of tropical denudation systems, and the fragile nature of many of the surface materials discussed in this volume demands a deeper understanding of their behaviour. No other book currently attempts this task and this study fills a serious gap in the literature of geomorphology.

The Quaternary Period In The United States

Author : Alan R. Gillespie
ISBN : 0444514716
Genre : Science
File Size : 86. 81 MB
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Full text e-book available as part of the Elsevier ScienceDirect Earth and Planetary Sciences subject collection.

Environmental Change And Tropical Geomorphology

Author : Ian Douglas
ISBN : UCAL:B4979589
Genre :
File Size : 62. 77 MB
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