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First published in 1952 The Sage Grouse in Wyoming was a seminal work, the first comprehensive study of the several species of western grouse. The author, Robert L. Patterson led the study from 1948 - 1952. This comprehensive treatise includes the first complete study of the natural history of the sage grouse, initially described by Lewis and Clark in 1806.The book is divided into three parts. Part I presents an overall view of the physical and biotic environment, diseases, parasites and other factors influencing population density. Part II is devoted to natural history and Part III is devoted to the influence of man's activities on population density.
This manual brings together information on all phases of seed handling and presents the results of more than 20 years of studies. Forest Service field personnel at several experiment stations and regional offices furnished a backlog of source material for treatments of individual genera.The manual consists of two main parts. Part 1 formulates general principles on the various phases of seed handling from formation of the seed to sowing. Part 2, which forms the larger part of the manual, provides relatively detailed but concise information for 444 species and varieties of trees and shrubs; this includes data on distribution and use, discussions of seeding habits, methods of seed collection, extraction and storage, seed germination, and nursery and field practice.
This textbook, originally published in 1970, is a classic in the field of Population Genetics. It presents the field of population genetics, starting with elementary concepts and leading the reader well into the field. It is concerned mainly with population genetics in a strict sense and deals primarily with natural populations and less fully with the rather similar problems that arise in breading livestock and cultivated plans. The emphasis is on the behavior of genes and population attributes under natural selection where the most important measure is Darwinian fitness. This text is intended for graduate students and advanced undergraduates in genetics and population biologyThis book steers a middle course between completely verbal biological arguments and the rigor of the mathematician. The first two-thirds of the book do not require advanced mathematical background. An ordinary knowledge of calculus will suffice. The latter parts of the book, which deal with population stochastically, use more advanced methods. Chapter Titles:1. Models of population growth.2. Randomly mating populations.3. Inbreeding.4. Correlation between relatives and assertive mating.5. Selection.6. Populations in approximate equilibrium.7. Properties of a finite population.8. Stochastic processes in the change of gene frequencies.9. Distribution of gene frequencies in populations.Appendix. Some statistical and mathematical methods frequently used in population genetics.Bibliography.Glossary.Index.
This work touches on the specialized world of wooden-ship building, looking at the endless variations of techniques from country to country, region to region, and over the course of history.
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