Though biogeography may be simply defined--the study of the geographic distributions of organisms--the subject itself is extraordinarily complex, involving a range of scientific disciplines and a bewildering diversity of approaches. For convenience, biogeographers have recognized two research traditions: ecological biogeography and historical biogeography. This book makes sense of the profound revolution that historical biogeography has undergone in the last two decades, and of the resulting confusion over its foundations, basic concepts, methods, and relationships to other disciplines of comparative biology. Using case studies, the authors explain and illustrate the fundamentals and the most frequently used methods of this discipline. They show the reader how to tell when a historical biogeographic approach is called for, how to decide what kind of data to collect, how to choose the best method for the problem at hand, how to perform the necessary calculations, how to choose and apply a computer program, and how to interpret results.
Through case studies, this book makes sense of the profound revolution that historical biogeography has undergone in the last two decades, and of the resulting confusion over its foundations, basic concepts, methods, and relationships to other disciplines of comparative biology.
Why are Mexicans so successful in individual sports, but deficient in team play? Why do Mexicans dislike living in skyscrapers? Why do Mexicans love to see themselves as victims, but also love victims? And why, though the Mexican people traditionally avoid conflict, is there so much violence in a country where many leaders have died by assassination? In this shrewd and fascinating book, the renowned scholar and former foreign minister Jorge Castañeda sheds much light on the puzzling paradoxes of his native country. Here’s a nation of 110 million that has an ambivalent and complicated relationship with the United States yet is host to more American expatriates than any country in the world. Its people tend to resent foreigners yet have made the nation a hugely popular tourist destination. Mexican individualism and individual ties to the land reflect a desire to conserve the past and slow the route to uncertain modernity. Castañeda examines the future possibilities for Mexico as it becomes more diverse in its regional identities, socially more homogenous, its character and culture the instruments of change rather than sources of stagnation, its political system more open and democratic. Mañana Forever? is a compelling portrait of a nation at a crossroads.
This book provides a first synthetic view of an emerging area of ecology and biogeography, linking individual- and population-level processes to geographic distributions and biodiversity patterns. Problems in evolutionary ecology, macroecology, and biogeography are illuminated by this integrative view. The book focuses on correlative approaches known as ecological niche modeling, species distribution modeling, or habitat suitability modeling, which use associations between known occurrences of species and environmental variables to identify environmental conditions under which populations can be maintained. The spatial distribution of environments suitable for the species can then be estimated: a potential distribution for the species. This approach has broad applicability to ecology, evolution, biogeography, and conservation biology, as well as to understanding the geographic potential of invasive species and infectious diseases, and the biological implications of climate change. The authors lay out conceptual foundations and general principles for understanding and interpreting species distributions with respect to geography and environment. Focus is on development of niche models. While serving as a guide for students and researchers, the book also provides a theoretical framework to support future progress in the field.
Get the essential tools you need to make an accurate diagnosis in the emergency department! Part of the popular Requisites series, Emergency Radiology: The Requisites delivers the conceptual, factual, and interpretive information you need for effective clinical practice in emergency radiology, as well certification and recertification review. Master core knowledge the easy and affordable way with clear, concise text enhanced by at-a-glance illustrations, boxes, and tables – all revised and enhanced with digital content to bring you up to date with today’s state of the art knowledge. Presents emergent findings and differential diagnosis tables so that important content is identified clearly within the text. Divides the contents of the book into two sections — trauma and non-trauma — to mirror the way you practice. Organizes the material in structured, consistent chapter layouts for efficient and effective review. Provides clinical material on radiology procedures that define your role in managing a patient with an emergent condition. Prepare for written exams or clinical practice with critical information on CTA in the ED on coronary, aorta, brain, and visceral arteries, plus new protocols for trauma and non-traumatic injuries. Stay up to date on what’s new in the field with thoroughly revised content and new, high-quality images obtained with today’s best technology. Get optimal results from today’s most often-used approaches, including the increase in routine use of "panscan" for trauma patients. Gain a practical, visual understanding of emergency radiology thanks to more than 900 multi-modality images. Study and review in the most efficient way, with structured, consistent chapter layouts for time-saving and effective exam preparation.
The Requisites series you know and trust for studying and rotation preparation presents this essential text on emergency radiology! It provides the foundation and the heart of the information you need for the Board exam and every day clinical use. With key features like emergent findings tables and differential diagnoses tables plus 600 high-quality images, this book makes it easy to review important information. Experts on various body systems and modalities of emergency radiology bring you a concise reference that meets all of your study needs. Presents emergent findings and differential diagnosis tables so that important content is identified clearly within the text. Divides the contents of the book into two sections—trauma and non-trauma—to mirror the way you practice. Organizes the material in structured, consistent chapter layouts for efficient and effective preparation for the emergency radiology questions incorporated throughout the Board exam. Provides clinical material on radiology procedures that define your role in managing a patient with an emergent condition. Includes 600 multi-modality images to give you a visual understanding of this image-centered specialty.
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