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| Author | : Dennis Marinus Hansen |
| Publisher | : |
| Total Pages | : 192 |
| Release | : 2006 |
| Genre | : |
| ISBN | : |
| Author | : Robert J. Whittaker |
| Publisher | : Oxford University Press |
| Total Pages | : 416 |
| Release | : 2007 |
| Genre | : Nature |
| ISBN | : 0198566115 |
Isolation, extinction, conservation, biodiversity, hotspots.
| Author | : Peter Vitousek |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 246 |
| Release | : 2013-03-08 |
| Genre | : Science |
| ISBN | : 3642789633 |
Oceanic islands represent a set of systems in which biological diversity varies as a consequence of remoteness or size, not environment; they are also generally simpler than continental ecosystems. Islands therefore provide an opportunity to determine the direct effects of biological diversity on ecosystem function. The volume addresses the components of biological diversity on islands and their patterns of variation; the modern threats to the maintenance of biological diversity on islands; the consequences of island biology and its modification by humanity regarding aspects of ecosystem function; the global implications of islands for conservation; and how islands can help one to understand the processes inducing changes throughout the world.
| Author | : Robert J. Whittaker |
| Publisher | : Oxford University Press |
| Total Pages | : 497 |
| Release | : 2023 |
| Genre | : Biogeography |
| ISBN | : 0198868561 |
Island biogeography is the study of the distribution and dynamics of species in island environments. Due to their isolation from more widespread continental species, islands are ideal places for unique species to evolve, but they are also places of concentrated extinction. Consequently, theyare widely studied by ecologists, evolutionary biologists, and conservationists.This accessible textbook builds on the success and reputation of its predecessors, documenting the recent advances in this exciting field and explaining how islands have contributed to both theory development and testing. In addition, the book describes the main processes of island formation,subsequent dynamics, and eventual demise, explaining the relevance of island environmental history to island biogeography. The authors demonstrate the significance of islands as hotspots of biodiversity and of prehistoric and historic anthropogenic extinction. Since island species continue tofeature disproportionally in the lists of threatened species today, the book examines both the chief threats to their persistence and some of the mitigation measures that can be put in play, with conservation strategies specifically tailored to islands.
| Author | : Xoaquín Moreira |
| Publisher | : Springer Nature |
| Total Pages | : 248 |
| Release | : 2024-01-03 |
| Genre | : Science |
| ISBN | : 3031478142 |
Theory and early empirical work posed that herbivore pressure should be lower on islands than on the mainland owing to lower herbivore abundance and diversity in insular systems. Consequently, plant taxa found on islands are expected to be less protected or even to have lost their defences completely. While early observational studies supported the prediction of lower herbivory and plant defences on islands, recent island-mainland comparisons have yielded mixed results, with some studies finding no differences between islands and mainlands or, surprisingly, higher herbivory and plant defences on islands. In this book, the authors aim to re-assess current theory and initiate a new generation of work on insularity effects on plant-herbivore interactions. This book aims to fill the research gaps by integrating the research that has been done to date and by compiling and summarising new research on insularity effects on plant-herbivore interactions. It provides a critical examination of the patterns in light of classical theory and identifies potential mechanisms or underlying processes. It also aims to raise new questions that will form the basis for a revised and more robust research programme.
| Author | : Dr. James Lazell |
| Publisher | : Univ of California Press |
| Total Pages | : 436 |
| Release | : 2005-11-01 |
| Genre | : Nature |
| ISBN | : 9780520931596 |
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 | : |
| Publisher | : |
| Total Pages | : 639 |
| Release | : 1991 |
| Genre | : Animal-plant relationships |
| ISBN | : |
| Author | : Robert Whittaker |
| Publisher | : |
| Total Pages | : 272 |
| Release | : 1998 |
| Genre | : Evolution (Biology) |
| ISBN | : 9780198500216 |
Islands provide us with natural laboratories in developing theories and models to understand how evolution works. This text offers a new synthesis of ideas and models in island ecology and evolution.
| Author | : David Bramwell |
| Publisher | : Cambridge University Press |
| Total Pages | : 539 |
| Release | : 2011-07-21 |
| Genre | : Science |
| ISBN | : 1139497804 |
Oceanic islands offer biologists unparalleled opportunities to study evolutionary processes and ecological phenomena. However, human activity threatens to alter or destroy many of these fragile ecosystems, with recent estimates suggesting that nearly half of the world's insular endemics are threatened with extinction. Bringing together researchers from around the world, this book illustrates how modern research methods and new concepts have challenged accepted theories and changed our understanding of island flora. Particular attention is given to the impact of molecular studies and the insights that they provide into topics such as colonisation, radiation, diversification and hybridisation. Examples are drawn from around the world, including the Hawaiian archipelago, Galapagos Islands, Madagascar and the Macronesian region. Conservation issues are also highlighted, with coverage of alien species and the role of ex situ conservation providing valuable information that will aid the formulation of management strategies and genetic rescue programmes.
| Author | : Ian Thornton |
| Publisher | : Cambridge University Press |
| Total Pages | : 246 |
| Release | : 2007-03-19 |
| Genre | : Nature |
| ISBN | : 1139462318 |
New or recently sterilized islands (for example through volcanic activity), provide ecologists with natural experiments in which to study colonization, development and establishment of new biological communities. Studies carried out on islands like this have provided answers to fundamental questions as to what general principles are involved in the ecology of communities and what processes underlie and maintain the basic structure of ecosystems. These studies are vital for conservation biology, especially when evolutionary processes need to be maintained in systems in order to maintain biodiversity. The major themes are how animal and plant communities establish, particularly on 'new land' or following extirpations by volcanic activity. This book comprises a broad review of island colonization, bringing together succession models and general principles, case studies with which Professor Ian Thornton was intimately involved, and a synthesis of ideas, concluding with a look to the future for similar studies.
