Author: Alan Graham Publisher: University of Chicago Press ISBN: 022654432X Category : Science Languages : en Pages : 335
Book Description
Land bridges are the causeways of biodiversity. When they form, organisms are introduced into a new patchwork of species and habitats, forever altering the ecosystems into which they flow; and when land bridges disappear or fracture, organisms are separated into reproductively isolated populations that can evolve independently. More than this, land bridges play a role in determining global climates through changes to moisture and heat transport and are also essential factors in the development of biogeographic patterns across geographically remote regions. In this book, paleobotanist Alan Graham traces the formation and disruption of key New World land bridges and describes the biotic, climatic, and biogeographic ramifications of these land masses’ changing formations over time. Looking at five land bridges, he explores their present geographic setting and climate, modern vegetation, indigenous peoples (with special attention to their impact on past and present vegetation), and geologic history. From the great Panamanian isthmus to the boreal connections across the North Atlantic and North Pacific Oceans that allowed exchange of organisms between North America, Europe, and Asia, Graham’s sweeping, one-hundred-million-year history offers new insight into the forces that shaped the life and land of the New World.
Author: Bruce McClish Publisher: Capstone ISBN: 1484636392 Category : Languages : en Pages : 33
Book Description
Contents include: North America: landforms; North America: climate, plants and animals; North America: history and culture; Introducing South America; South America: landforms; South America: climate, plants and animals; South America: history and culture; Continental connections and plate tectonics; Land bridges: the narrow link; Land bridges: dropping seas.
Author: David Moody Hopkins Publisher: Stanford University Press ISBN: 9780804702720 Category : Science Languages : en Pages : 524
Book Description
Data of geology, oceanography, paleontology, plant geography, and anthropology focus on problems and lessons of Beringia. Includes papers presented at Symposium held at VII Congress of International Association for Quaternary Research, Boulder, Colorado, 1965.
Author: James Gleeson Publisher: CSIRO PUBLISHING ISBN: 0643106944 Category : Science Languages : en Pages : 249
Book Description
The rapidly increasing number of threatened flora and fauna species worldwide is one of the chief problems confronting environmental professionals today. This problem is largely due to the impact humans have had on land use through development (e.g. agricultural, residential, industrial, infrastructure and mining developments). The requirement for developers to implement measures to reduce the impacts of development on wildlife is underpinned by government legislation. A variety of measures or strategies are available to reduce such impacts, including those to reduce impacts on flora and fauna during land clearance, to deter fauna from potential hazards, to facilitate the movement of fauna around and through a development site as well as those to provide additional habitat. In recent years, considerable advances have been made in the techniques used to reduce the impacts of development on wildlife in Australia and overseas. Reducing the Impacts of Development on Wildlife contains a comprehensive range of practical measures to assist others to reduce the impacts resulting from development on terrestrial flora and fauna, and promotes ecologically sustainable development. It will be very useful to environmental consultants and managers, developers, strategists, policy makers and regulators, as well as community environmental groups and students. 2012 Whitley Award Commendation for Zoological Text.
Author: Mark V. Lomolino Publisher: University of Chicago Press ISBN: 9780226492360 Category : Science Languages : en Pages : 2640
Book Description
Foundations of Biogeography provides facsimile reprints of seventy-two works that have proven fundamental to the development of the field. From classics by Georges-Louis LeClerc Compte de Buffon, Alexander von Humboldt, and Charles Darwin to equally seminal contributions by Ernst Mayr, Robert MacArthur, and E. O. Wilson, these papers and book excerpts not only reveal biogeography's historical roots but also trace its theoretical and empirical development. Selected and introduced by leading biogeographers, the articles cover a wide variety of taxonomic groups, habitat types, and geographic regions. Foundations of Biogeography will be an ideal introduction to the field for beginning students and an essential reference for established scholars of biogeography, ecology, and evolution. List of Contributors John C. Briggs, James H. Brown, Vicki A. Funk, Paul S. Giller, Nicholas J. Gotelli, Lawrence R. Heaney, Robert Hengeveld, Christopher J. Humphries, Mark V. Lomolino, Alan A. Myers, Brett R. Riddle, Dov F. Sax, Geerat J. Vermeij, Robert J. Whittaker
Author: James Powell Publisher: Simon and Schuster ISBN: 1416576789 Category : Science Languages : en Pages : 280
Book Description
In Mysteries of Terra Firma, James Lawrence Powell tells an engrossing three-part tale of how we came to understand the ground on which we walk, and how that ground holds the key to the greatest secrets of deep space and time. Naming his profound stories Time, Drift, and Chance, he tells of the three twentieth-century revolutions in thought that created the amazing science of Earth -- and of all planets to the edge of the universe. The riddle that drove the first revolution is obvious and yet in 1904 remained impenetrable: how old is Earth? An encounter between the imperious Lord Kelvin and a New Zealand farm-boy-turned-physicist, Ernest Rutherford, set the stage for the solution and launched a golden century of geology. As a result, scientists learned that if the 4.5 billion years of geologic time were compressed into a single twenty-four-hour period, Homo sapiens would have arrived only in the last second. The geological Revolution of Time reveals how long the ground on which we walk has existed, and how briefly we have trod that ground. In the early twentieth century, German meteorologist and polar explorer Alfred Wegener proposed a counterintuitive, heretical theory: that terra firma is not so firm; instead of being fixed in place, continents drift. In 1926, petroleum geologists convened in New York City to discuss Wegener's radical idea, where it was met with outrage and skepticism: "If we are to believe Wegener's hypothesis we must forget everything which has been learned in the last seventy years and start all over again," one attendee said. Forty years later, a new generation did exactly that. The Revolution of Drift, the second part of Powell's narrative, showed us how the ground on which we walk moves. Throughout geologic time, meteorites have incessantly bombarded everything in the solar system. Far from serene and predictable, the planets are ruled by random violence on an unimaginable scale. Once a mountain-sized meteorite flew through space, struck the Earth, killed the dinosaurs and two-thirds of all species, and spared the small hamster-sized creature that happened to be our ancestor. The chance of that happening again is essentially zero. So, the final revolution in Powell's history of a golden century of geology is the Revolution of Chance. Simply put, this revolution in thought has transformed our understanding of how lucky we really are. If we can learn so much from considering no more than the rocks beneath our feet, what will we learn when we begin walking on other planets? Mysteries of Terra Firma is both charming in its storytelling and staggering in its implications. Discovering the ground on which we stand is a fascinating journey into our past -- and our future.
Author: Edward James Taaffe Publisher: MORTON O'KELLY ISBN: 0133685721 Category : Architecture Languages : en Pages : 434
Book Description
This overview of transport geography explores both institutional and analytical approaches to both intra- and inter-urban transport and relates them throughout with contemporary examples. The work describes the historical development of US transportation.
Author: Dr. James Lazell Publisher: Univ of California Press ISBN: 9780520931596 Category : Nature Languages : en Pages : 436
Book Description
Guana, in the British Virgin Islands, is home to a remarkably diverse assortment of animal and plant life: mangroves, flamingos, iguanas, frogs, birds, snakes, spiders, tortoises, grasshoppers, and bats, to name but a few. What is so surprising about Guana's astonishing panoply is that, according to prevailing ecological theories, the island's diversity should be much lower than it actually is. This provocative book describes Guana's flora and fauna against the backdrop of islands worldwide and their ecology, evolution, and conservation. Much more than a book about one island, it raises important challenges to prevailing dogma of island biogeography and theoretical ecology. James (Skip) Lazell demonstrates that meaningful conservation and avoiding tragic loss of biodiversity demand we know far more about biological interactions, physiographic and geological structure, meteorology, and other factors. He presents compelling evidence that high levels of natural biodiversity underpin ecosystem resilience and stability. Lazell's engaging narrative, containing many entertaining asides and personal reflections, widens into an evocative commentary about the nature of life on earth.
Author: Alan Graham
Author: Bruce McClish
Author: David Moody Hopkins
Author: James Gleeson
Author: Mark V. Lomolino
Author: James Powell
Author: Edward James Taaffe
Author: Dr. James Lazell
Author: Scott L. Wing
Author: Ian F. Spellerberg