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I was asked to introduce this volume by examining "why a knowledge of ecosys tem functioning can contribute to understanding species activities, dynamics, and assemblages." I have found it surprisingly difficult to address this topic. On the one hand, the answer is very simple and general: because all species live in ecosystems, they are part of and dependent on ecosystem processes. It is impossible to understand the abundance and distribution of populations and the species diversity and composition of communities without a knowledge of their abiotic and biotic environments and of the fluxes of energy and mat ter through the ecosystems of which they are a part. But everyone knows this. It is what ecology is all about (e.g., Likens, 1992). It is why the discipline has retained its integrity and thrived, despite a sometimes distressing degree of bickering and chauvinism among its various subdisciplines: physiological, be havioral, population, community, and ecosystem ecology.
A straightforward, easy-to-understand book that teaches you how to directly communicate with animals. Animal Talk teaches you how to open the door to your animal friends’ hearts and minds without resorting to magic tricks or wishful thinking. Every creature can be reached through telepathic communication—from your tabby cat or cockatiel to the wasps that build nests in the eaves of your home or even the common flea—you just have to be open to the idea, and mind-to-mind communication will be in your grasp. In addition to an entire chapter devoted to teaching people how to develop mind-to-mind communication with animals, Animal Talk includes a discussion of freedom, control, and obedience, understanding behaviors from the animal’s point of view, how to handle upsets between animals, tips on nutrition for healthier pets, and the special relationship between animals and children.
This book critically evaluates cryptic species - a growing trend in taxonomy - and their importance for evolutionary biology.
This revised second edition provides an introductory guide through the maze of interdisciplinary themes that comprise 'biodiversity.' It combines biological sciences with insights into the origins, variety and distribution of biodiversity, analysis of the social and political context, and the threats to, and opportunities for, the survival of natural systems. Whilst retaining its existing structure, this updated new edition reflects advances that have demonstrated the importance of living systems as drivers of environmental services vital to human health and security. The final chapter has been revised to tackle more explicitly the contrasting approaches to conservation, and throughout, the book has been updated to reflect new research and developments. With highly original international case studies and ample illustrations to explain difficult topics clearly, this excellent book remains the only introductory text which brings together the full range of theory and practice of ‘biodiversity’ and ‘conservation’.
From the red grouse to the Ethiopian bush-crow, bird populations around the world can provide us with vital insights into the effects of climate change on species and ecosystems. They are among the best studied and monitored of organisms, yet many are already under threat of extinction as a result of habitat loss, overexploitation and pollution. Providing a single source of information for students, scientists, practitioners and policy-makers, this book begins with a critical review of the existing impacts of climate change on birds, including changes in the timing of migration and breeding and effects on bird populations around the world. The second part considers how conservationists can assess potential future impacts, quantifying how extinction risk is linked to the magnitude of global change and synthesising the evidence in support of likely conservation responses. The final chapters assess the threats posed by efforts to reduce the magnitude of climate change.