Pattern of buildup of pathogen infection during a growing season in a host population of fixed size. The main objectives of the study are to measure demographic pe rformance of remnant populations, analyze their structure and vitality in different habitats and relate these data to management regimes and environmental factors. Such a list fails to span even the range of potentially valuable concepts which are introduced and discussed; it cannot begin to indicate their overflowing abundance. In year 3 a similar abundance follows a harsh winter but a moderately favourable summer. All books are in clear copy here, and all files are secure so don't worry about it. He served as president of the British Ecological Society 1967 and of the European Society for Evolutionary Biology 1993-1995. The section on moving averages would have tied up well with a section on the analysis of time series.
Abstract Population change in plant pathogens is driven by environmental factors, especially wetness and temperature, and by intrinsic and induced host resistance. He worked in the Department of Agriculture, Oxford, and then as Professor of Botany in the University of North Wales. He was a fellow of the Royal Society from 1978 and a member of its Council from 1987 89. It is shown that equivalent mortality—an increase in mortality which reduces the intrinsic growth rate of all species by an equal proportional amount—does not affect the conditions for coexistence in the n-species Lotka-Volterra model. This leads to high pathogen abundance. This tool can aid the design of conservation landscapes for other endangered, wide-ranging species in human-dominated environments.
Annals of Applied Biology 129: 1—12. Canadian Journal of Botany 73: S311—S319. The parts of the book on numerical methods and statistics are very self-contained. It makes an excellent text book but, more than that, it clearly demonstrates one of the ways in which ecology has something practical and useful to offer. Researchers and population biologists who wish to specifically study population biology in plant pathogens will also find this book an important tool, as it explains the basic tenets of population biology, population genetics, and the evolution of plant pathogens, and illustrates their applications in epidemiology and applied agriculture.
There are separate chapters on simple linear regression, curvilinear regression and multiple regression. It is possible that wild rice types have some of the anatomi-cal features peculiar to C 4 plants and that the wild types may contain C 3 -C 4 intermediates. Animals that disperse from the source pools increase the probability of persistence of the metapopulation across the greater landscape. This new edition has been updated and revised with more recent examples replacing older ones where appropriate. Section four provides detailed information on annuals, biennials, herbaceous perennials and woody plants. There are a number of disappointing features to the book.
May show signs of minor shelf wear and contain limited notes and highlighting. Effective integration of plant population ecology, populationgenetics and evolutionary biology. He received the Millennium Botany Award in 1999. It may then be asked: can this book help applied ecologists? The same applies to short-lived animals e. Starting from this peak, in year 2 a moderately unfavourable winter is followed by an unfavourable summer and peak abundance is moderate. Topics covered include variation and its inheritance, geneticmarkers including molecular markers, plant breeding systems,ecological genetics, intraspecific interactions, populationdynamics, regional dynamics and metapopulations, competition andcoexistence, and the evolution of breeding systems and lifehistory. Reproductive Isolation and Speciation Host-Shift Speciation Host Shifts and Cospeciation Mechanisms for the Rapid Evolution of Novel Pathogen Genotypes Plant Viruses Emerging by Recombination Interspecific Hybrids in Eukaryotic Plant Pathogens Horizontal Gene Transfer That Affects Pathogenicity and Virulence Horizontal Gene Transfer in Bacteria Horizontal Gene Transfer in Eukaryotes Selection for Novel Pathogen Genotypes Role of Agriculture and Other Extrinsic Factors in Disease Emergence Host Populations in Modern Agriculture Promote Disease Emergence Additional Effects of Agriculture on Pathogen Evolution Environmental Factors That Promote Disease Emergence Climate Change Vector Populations Cultural Practices Countermeasures to Reduce the Risk of Disease Emergence Summary of Key Concepts Recommended Reading 12 Contributions of Population Genetics in Plant Disease Epidemiology Historical Links Between Population Genetics and Epidemiology Descriptive Studies of Genetic Variation in Populations of Plant Pathogens Identification of Cryptic Species Epidemiological Inferences from Clonal Population Structure Epidemiological Inferences from Population Subdivision Epidemiological Inferences about Sexual Reproduction Direct Tracking of Pathogen Genotypes for Epidemiological Inference Identifying Sources of Primary Inoculum Using Genetic Markers Inferences from Spatial Patterns of Pathogen Genotypes Applications of Genetic Variation to Disease Management: Diagnosis and Quantification of Plant Pathogens A Critical Assessment of the Relevance of Pathogen Genetic Variation to Plant Disease Management Future Directions for Population Biology in Plant Pathology Metagenomics and Plant Microbiomes Landscape Genetics Population Genomics and Association Mapping Summary of Key Points Recommended Reading Appendix: Genetic Markers Historically Used for Genotyping Plant Pathogens Glossary Abbreviations References Index Customer Reviews Biography Author Michael G.
They consist of a brief introduction to a variety of numerical methods. Journal of Peasant Studies 31: 45—72. Buy with confidence, excellent customer service!. I believe the answer is 'yes, enormously, but only indirectly'; help will come through the deeper insight it brings into the nature of the plant material that they are concerned with. May show signs of minor shelf wear and contain limited notes and highlighting.
Schieber E 1972 Economic impact of coffee rust in Latin America. Annual Review of Phytopathology 10: 491—510. In that context, the properties of rice canopies with respect to the interception of solar radiation and its effect on leaf temperature are examined. If however he is saying that these experiments have no value as they stand because measurement and interpretation were confined to simple effects, then I find his position too extreme. Heightened extinction risks were highlighted recently when a Canadian population of Atlantic cod Gadus morhua was listed as endangered, on the basis of declines as high as 99.
Three patches in natural populations and one subpopulation from different-aged forests in Germany were analysed. Readers outside their field of expertise may stumble when they encounter a number of terms used without clear definition, e. Besuchen Sie uns auf der Leipziger Buchmesse 21. For scientists, rice production should be about converting the maximum fraction of solar energy into the maximum amount of chemical energy in grain in the shortest possible time; that conversion should be achieved using the smallest amount of land, water, and fertilizer. This book, written in 1977, brought together for the first time current knowledge of plants that might be relevant to understanding their population biology. Author by : John L.
Grey seal pup production on Sable Island, Nova Scotia, has been monitored since the early 1960s. The title of the book is slightly misleading. HarperReview by: Brian TrenbathJournal of Applied Ecology, Vol. Annual Review of Phytopathology 27: 241—270. Matrices are used extensively in the chapters on regression, but there are almost no references to the sections on matrix methods.