Animal ecology

About: Animal ecology is a research topic. Over the lifetime, 30864 publications have been published within this topic receiving 1015107 citations.

The comparison of usage and availability measurements for evaluating resource preference

Abstract: Modern ecological research often involves the comparison of the usage of habitat types or food items to the availability of those resources to the animal. Widely used methods of determining preference from measurements of usage and availability depend critically on the array of components that the researcher, often with a degree of arbitrariness, deems available to the animal. This paper proposes a new method, based on ranks of components by usage and by availability. A virtue of the rank procedure is that it provides comparable results whether a questionable component is included or excluded from consideration. Statistical tests of significance are given for the method. The paper also offers a hierarchical ordering of selection processes. This hierarchy resolves certain inconsistencies among studies of selection and is compatible with the analytic technique offered in the paper. Central to the study of animal ecology is the usage an animal makes of its environment: specifically, the kinds of foods it consumes and the varieties of habitats it occupies. Many analytic procedures have been de- vised to treat data on the usage of such resources, particularly in relation to information on their avail- ability to the animal, for the purpose of determining "preference." The objectives of this report are to de- scribe the problem of determining preference by com- paring usage and availability data, to illustrate a seri- ous shortcoming in the routine application of most procedures for comparing these data, and to suggest a new method that resolves this difficulty. The pro- posed technique results in a ranking of the components on the basis of preference, and permits significance tests of the ranking.

Clinical biochemistry of domestic animals

Abstract: T.B. Farver, Concepts of Normality in Clinical Biochemistry. J.G. Hauge, DNA Technology in Diagnosis, Breeding, and Therapy. J.J. Kaneko, Carbohydrate Metabolism and Its Diseases. M.L. Bruss, Lipids and Ketones. J.J. Kaneko, Serum Proteins and the Dysproteinemias. L.J. Gershwin, Clinical Immunology. J.W. Harvey, The Erythrocyte: Physiology, Metabolism, and Biochemical Disorders. J.J. Kaneko, Porphyrins and the Porhyrias. J.E. Smith, Iron Metabolism and Its Disorders. W.J. Dodds, Hemostasis. J.G. Zinkl and M.B. Kabbur, Neutrophil Function. J.W. Kramer and W.E. Hoffmann, Clinical Enzymology. B.C. Tennant, Hepatic Function. D.F. Brobst, Pancreatic Function. W.E. Hornbuckle and B.C. Tennant, Gastrointestinal Function. G.H. Cardinet III, Skeletal Muscle Function. D.R. Finco, Kidney Function. G.P. Carlson, Fluid, Electrolyte, and Acid-Base Balance. J.A. Mol and A. Rijnberk, Pituitary Function. A. Rijnberk and J.A. Mol, Adrenocortical Function. J.J. Kaneko, Thyroid Function. L-E. Edqvist and M. Forsberg, Clinical Reproductive Endocrinology. T.J. Rosol and C.C. Capen, Calcium-Regulating Hormones and Diseases of Abnormal Mineral (Calcium, Phosphorus, Magnesium) Metabolism. R.B. Rucker and J.G. Morris, The Vitamins. M. Haskins and U. Giger, Lysosomal Storage Diseases. B.R. Madewell, Tumor Markers. C.S. Bailey and W. Vernau, Cerebrospinal Fluid. J.R. Turk and S.W. Casteel, Clinical Biochemistry in Toxicology. W.F. Loeb, Clinical Biochemistry of Laboratory Rodents and Rabbits. J.T. Lumeij, Avian Clinical Biochemistry. Appendixes. Index.

Ecology: Individuals Populations and Communities

Abstract: A revised and updated edition of this textbook. As before the study of plant and animal ecology is fully integrated and mathematical and laborotory studies are described where necessary. Examples drawn from real ecological systems ilustrate the complexity of this subject and the involvement of diverse areas: descriptive natural history, physiology, behaviour, field experimentation and mathematical modelling. The authors attempt to encourage the reader to combine all the above facets, so that a balanced view emerges. Emphasis is placed on the clear presentation of mathematical aspects and the material aims to be accessible to the undergraduate with little experience and also stimulating to practising ecologists. This new edition contains two new chapters both of which consider areas of applied ecology which are relevant to contemporary global issues. The first considers the control of abundance; on the one hand the limiting of pest and weed populations, on the other, maintaining the biological diversity of endangered species. The second considers large areas as an extension of the discussion of communities. These "ecosystems" in the newest sense of the word are an important field of study when considering some of the important environmental problems facing mankind.

An Introduction to Environmental Biophysics

Abstract: 1. Introduction 2. Temperature 3. Water Vapor and Other Gases 4. Liquid Water in Organisms and their Environment 5. Wind 6. Heat and Mass Transport 7. Conductances for Heat and Mass Transport 8. Heat Flow in the Soil 9. Water Flow in Soil 10. Radiation Basics 11. Radiation Fluxes in Natural Environments 12. Animals and Their Environment 13. Humans and Their Environment 14. Plants and Plant Communities 15. The Light Environment of Plant Canopies Appendix

Resource Selection by Animals : Statistical design and analysis for field studies

Abstract: Preface. List of Symbols. 1. Introduction to Resource Selection Studies. 2. Statistical Modelling Procedures. 3. Examples of the Use of Resource Selection Functions. 4. Studies with Resources Defined by Several Categories. 5. Resource Selection Functions from Logistic Regression. 6. Resource Selection over Several Time Periods. 7. Log-Linear Modelling. 8. Discrete Choice Models with Changing Availability. 9. Applications Using Geographic Information Systems. 10. Discriminant Function Analysis. 11. Analysis of the Amount of Use. 12. Some Other Types of Analysis. 13. Risk Assessment and Population Size Estimation. 14. Computing. References. Name Index. Subject Index.