The Web of Geological Sciences:

The Web of Geological Sciences:

Author: Marion E. Bickford

Publisher: Geological Society of America

Published: 2017-09-29

Total Pages: 246

ISBN-13: 0813725232

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The web of geological sciences, Special papers 500 and 523, written in celebration of the 125th anniversary of the Geological Society of America.


Evolution and Environment in Tropical America

Evolution and Environment in Tropical America

Author: Jeremy B. C. Jackson

Publisher: University of Chicago Press

Published: 1996-12-15

Total Pages: 448

ISBN-13: 9780226389424

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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.


Stream Ecology

Stream Ecology

Author: J. David Allan

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 385

ISBN-13: 9401107297

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Running waters are enormously diverse, ranging from torrential mountain brooks, to large lowland rivers, to great river systems whose basins occupy subcontinents. While this diversity makes river ecosystems seem overwhelmingly complex, a central theme of this volume is that the processes acting in running waters are general, although the settings are often unique. The past two decades have seen major advances in our knowledge of the ecology of streams and rivers. New paradigms have emerged, such as the river continuum and nutrient spiraling. Community ecologists have made impressive advances in documenting the occurrence of species interactions. The importance of physical processes in rivers has attracted increased attention, particularly the areas of hydrology and geomorphology, and the inter-relationships between physical and biological factors have become better understood. And as is true for every area of ecology during the closing years of the twentieth century it has become apparent that the study of streams and rivers cannot be carried out by excluding the role of human activities, nor can we ignore the urgency of the need for conservation. These developments are brought together in Stream Ecology: Structure and function of running waters, designed to serve as a text for advanced undergraduate and graduate students, and as a reference book for specialists in stream ecology and related fields.


The Rio Chagres, Panama

The Rio Chagres, Panama

Author: Russell S. Harmon

Publisher: Springer Science & Business Media

Published: 2005-06-14

Total Pages: 384

ISBN-13: 9781402032981

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This book examines one of the most important and complex of the world's tropical rainforest regions: the greater Panama Canal Watershed. The Rio Chagres is the primary water source for operating the Canal, and supplies potable water for municipal use and electricity generation, but science has left this important national resource largely unstudied. The text promotes understanding of the physical and ecological components of an isolated and largely pristine tropical rainforest.


Zoogeography

Zoogeography

Author: American Association for the Advancement of Science

Publisher:

Published: 1958

Total Pages: 509

ISBN-13:

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"A symposium presented on August 26-27, 1957 [under the prime auspices of the Pacific Section of the Society of Systematic Zoology] at the Stanford University joint meeting of the American Institute of Biological Sciences and the Pacific Division of the American Association for the Advancement of Science; and a symposium presented on December 28, 1957 at the Indianapolis meeting of the American Association for the Advancement of Science"--T.p.


Scour at Bridge Foundations on Rock

Scour at Bridge Foundations on Rock

Author: Jeffrey Ray Keaton

Publisher: Transportation Research Board

Published: 2012

Total Pages: 186

ISBN-13: 0309214114

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"This report provides a methodology for estimating the time rate of scour and the design scour depth for a bridge founded on rock, as well as design and construction guidelines for application of the methodology. It will be of interest to hydraulic, bridge, and geotechnical engineers responsible for designing bridge foundations on rock or maintenance engineers concerned about existing bridges founded on erodible rock."--Foreword.