Author: N. Adam Smith
Publisher: PenSoft Publishers LTD
ISBN: 9546425850
Category : Science
Languages : en
Pages : 124
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Book Description
The flightless Mancallinae (Aves, Pan-Alcidae) from the Pacific Ocean are represented by one of the richest fossil records among Charadriiformes. A detailed review of previously published and previously undescribed fossils referred to Mancallinae resulted in taxonomic revision of the clade and the identification of three new species from the Miocene and Pliocene of California, USA. This monograph includes descriptions of new Mancallinae species and provides the first species-level phylogenetic hypothesis of Mancallinae relationships. Phylogenetic hypotheses were generated through the combined analysis of molecular sequence data and newly identified morphological character data for extant and extinct charadriiforms. The results of the combined phylogenetic analysis places hypotheses regarding the ethology and morphological convergence of Mancallinae to other flightless wing-propelled divers in phylogenetic context and facilitates comparisons between alcid paleodiversity and paleoclimatic events that have been hypothesized as drivers of alcid evolution.
Author: Gerald Mayr
Publisher: John Wiley & Sons
ISBN: 111902076X
Category : Science
Languages : en
Pages : 341
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Book Description
Knowledge of the evolutionary history of birds has much improved in recent decades. Fossils from critical time periods are being described at unprecedented rates and modern phylogenetic analyses have provided a framework for the interrelationships of the extant groups. This book gives an overview of the avian fossil record and its paleobiological significance, and it is the only up-to-date textbook that covers both Mesozoic and more modern-type Cenozoic birds in some detail. The reader is introduced to key features of basal avians and the morphological transformations that have occurred in the evolution towards modern birds. An account of the Cenozoic fossil record sheds light on the biogeographic history of the extant avian groups and discusses fossils in the context of current phylogenetic hypotheses. This review of the evolutionary history of birds not only addresses students and established researchers, but it may also be a useful source of information for anyone else with an interest in the evolution of birds and a moderate background in biology and geology.
Author: Gerald Mayr
Publisher: Springer Science & Business Media
ISBN: 3540896287
Category : Science
Languages : en
Pages : 261
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Book Description
In the present book the Paleogene fossil record of birds is detailed for the first time on a worldwide scale. I have developed the idea for such a project for several years, and think that it is an appropriate moment to present a summary of our c- rent knowledge of the early evolution of modern birds. Meanwhile not only is there a confusing diversity of fossil taxa, but also significant progress has been made concerning an understanding of the higher-level phylogeny of extant birds. Hypotheses which were not considered even a decade ago are now well supported by independent analyses of different data. In several cases these group together morphologically very different avian groups and allow a better understanding of the mosaic character distribution found in Paleogene fossil birds. The book aims at bringing some of this information together, and many of the following data are based on first-hand examination of fossil specimens.
Author: Michael J. Novacek
Publisher: Columbia University Press
ISBN: 9780231074384
Category : Science
Languages : en
Pages : 276
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Book Description
More than 99% of all life that has ever existed on this planet is extinct. Moreover, human acceleration of the extinction of species has created a crisis in biodiversity. How can the history of past life be retreived? How does this history bear on our understanding of the organization and evolution of present-day species? These questions are addressed in extinction and phylogeny.
Author: Tim Birkhead
Publisher: A&C Black
ISBN: 1408137852
Category : Nature
Languages : en
Pages : 292
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Book Description
The story of the author's research expeditions in the Canadian Arctic, this book is for professional and amateur ornithologists, students in ecology and animal behaviour. The Arctic is one of the world's last great wildernesses: a place of outstanding beauty, history and extraordinary wildlife in which seabirds form an important component of a rich, marine environment. Like many other remote regions, it is under threat from human activities, but to protect it we need to understand it. That understanding can come only through scientific research and the central threat of this book is to examine how such research is actually done. It describes the business of conducting biological studies on seabirds in remote parts of eastern Canada. Several themes are engagingly interwoven: the sheer beauty of the Arctic environment, the intriguing biology of its wildlife, and the discovery and exploitation of enormous seabird colonies, including the destruction of the Great Auk. Tim Birkhead describes in personal detail the different facets of research and brings to life both the difficulties and the excitement of working in the Arctic. What is it like setting up a camp for four months on a remote and uninhabited island not far from the North Pole? How does it feel to commute daily by inflatable boat amidst icebergs to study-areas located on towering cliffs, set between ice-blue glaciers? What do you do when a Polar bear decides that you have invaded its Arctic home? Why are the seabird colonies in the high Arctic so enormous? What do we know about lifestyle of the extinct Great Auk? In 1992 Canada's legendary cod fishery was finally destroyed - what are the consequences of this for other wildlife? These are just a few of the questions dealt with in this book. Our future as a species depends upon science and the understanding it brings of the world we live in. The work of scientists often appears obscure, but in this book, Tim Birkhead has used his experience of seven summers in the Arctic to write an accessible and straightforward account of how research is actually done in the field. The text is enriched by David Quinn's illustrations, and by numerous photographs in both black and white, and colour.
Author: Karel Hendrik Voous
Publisher:
ISBN: 9780907446132
Category : Birds
Languages : en
Pages : 85
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Book Description
Author: Hildegarde Howard
Publisher:
ISBN:
Category : Birds
Languages : en
Pages : 334
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Book Description
Author: Bernard Stonehouse
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 576
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Book Description
Author: Pablo Garcia Borboroglu
Publisher: University of Washington Press
ISBN: 0295999063
Category : Science
Languages : en
Pages : 337
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Book Description
Penguins, among the most delightful creatures in the world, are also among the most vulnerable. The fragile status of most penguin populations today mirrors the troubled condition of the southern oceans, as well as larger marine conservation problems: climate change, pollution, and fisheries mismanagement. This timely book presents the most current knowledge on each of the eighteen penguin species-from the majestic emperor penguins of the Antarctic to the tiny blue penguins of New Zealand and Australia, from the northern rockhopper penguins of the South Atlantic and Indian Oceans to the Galapagos penguins of the equator-written by the leading experts in the field. Included for each species: o Life history o Distribution, population sizes and trends o International Union for the Conservation of Nature (IUCN) status o Threats to survival o Legal protection The book also provides information on current conservation efforts, outlines the most important actions to be taken to increase each population's resilience, and recommends further research needed to protect penguins and the living creatures that share their environment. Beautifully illustrated with full-color photographs of each species in their natural habitat and detailed charts and graphs, Penguins will be an invaluable tool for researchers, conservation groups, and policy makers. It will also enchant anyone interested in the lives or the plight of these fascinating animals. Watch the trailer: http://www.youtube.com/watch?v=0s0BbIU6cqE&feature=plcp
Author: Errol Fuller
Publisher: Bunker Hill Publishing, Inc.
ISBN: 9781593730031
Category : Nature
Languages : en
Pages : 56
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Book Description
A seabird whose extinction was entirely the work of humankind, the last two recorded great auk's were killed on June 3, 1844. This book pays homage to this incredible species.
