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A memoir of life in the family of Utah fundamentalist leader, polygamist, and naturopathic physician Rulon C. Allred.
Tropical rainforests cover only about 6% of the earth's surface, yet they are home to more than half the world's species. This book looks at the biology and behaviour of predators and prey describing how they live together in harmony and balance and how vital they are to the wellbeing of the whole world. It is one of a series of books which aims to provide an understanding of the unique ecosystems of the rainforest. It describes the amazing plants and animals and how they interact, and addresses local and global environmental and conservation issues.
In Fighting for Survival: Predators and Prey, students will learn the diversity of animal survival tactics. Young readers will love turning the page as they gain valuable information and are prompted to answer questions along the way. Take a fantastic photo journey into the wild with Rourke’s Close-Up on Amazing Animals for readers in grades K–3. Readers will explore the unique adaptations and relationships that help animals survive in the wild. Repetitive text aids comprehension while real photographs assist in vocabulary development for beginning readers.
This book addresses the fundamental issues of predator-prey interactions, with an emphasis on predation among arthropods, which have been better studied, and for which the database is more extensive than for the large and rare vertebrate predators. The book should appeal to ecologists interested in the broad issue of predation effects on communities.
Many animals regulate their population density by patterns of behavior that would be easy to explain if the forces of natural selection acted to optimize group properties. But Darwinian selection acts on individuals, not groups, and most simple theories have shown group selection to be too slow ever to oppose individual selection successfully. In this book Michael Gilpin presents a model, based on predator-prey dynamics, wherein nonlinear effects are important, so that small advantages to the selfish individual are nonlinearly amplified into disaster for his group. The result is that group selection can be rapid and powerful. Of course many instances of apparent group selection can be explained by kin selection; in other cases, close examination reveals that seemingly altruistic behavior directly benefits the individual genotype as well as the group. The value of the monograph is that it provides a robust model in which group selection, pure and unadulterated, can be seen to work.
Examines predator-prey relationships in the worlds of mammals, birds, fish, reptiles, plants, insects, microorganisms, and the fossilized records of the dinosaurs