Download or read book The Journal of Cytology and Genetics written by and published by . This book was released on 1991 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forest Development in Cold Climates written by John Alden and published by Springer Science & Business Media. This book was released on 1993-06-30 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt: ''Required reading for forest scientists.'' -Northeastern Naturalist

Download or read book Bark Beetles written by Fernando E. Vega and published by Academic Press. This book was released on 2014-12-29 with total page 641 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bark Beetles: Biology and Ecology of Native and Invasive Species provides a thorough discussion of these economically important pests of coniferous and broadleaf trees and their importance in agriculture. It is the first book in the market solely dedicated to this important group of insects, and contains 15 chapters on natural history and ecology, morphology, taxonomy and phylogenetics, evolution and diversity, population dynamics, resistance, symbiotic associations, natural enemies, climate change, management strategies, economics, and politics, with some chapters exclusively devoted to some of the most economically important bark beetle genera, including Dendroctonus, Ips, Tomicus, Hypothenemus, and Scolytus. This text is ideal for entomology and forestry courses, and is aimed at scientists, faculty members, forest managers, practitioners of biological control of insect pests, mycologists interested in bark beetle-fungal associations, and students in the disciplines of entomology, ecology, and forestry. Provides the only synthesis of the literature on bark beetles Features chapters exclusively devoted to some of the most economically important bark beetle genera, such as Dendroctonus, Ips, Tomicus, Hypothenemus, and Scolytus Includes copious color illustrations and photographs that further enhance the content

Download or read book Fast wood Forestry Myths and Realities written by Christian Cossalter and published by CIFOR. This book was released on 2003-08-26 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: A brief history of plantations. Environmental issues. Plantations and biodiversity. Water matters. Plantations and the soil. Pests: plantations' achilles' heel? Genetically modified trees: opportunity or treath? Plantations and global warming. Social issues. Employement: a contested balance sheet. Land tenure and conflict. Economic issues. Spiralling demand. Incentives and subsidies. Economies of scale. Costing the earth.

Download or read book Poplars and Willows written by Jud G. Isebrands and published by CABI. This book was released on 2014-02-12 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt: Poplars and willows form an important component of forestry and agricultural systems, providing a wide range of wood and non-wood products. This book synthesizes research on poplars and willows, providing a practical worldwide overview and guide to their basic characteristics, cultivation and use, issues, problems and trends. Prominence is given to environmental benefits and the importance of poplar and willow cultivation in meeting the needs of people and communities, sustainable livelihoods, land use and development.

Download or read book Woodland Conservation and Management written by George Peterken and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 511 pages. Available in PDF, EPUB and Kindle. Book excerpt: Professor John Harper, in his recent Population Biology of Plants (1977), made a comment and asked a question which effectively states the theme of this book. Noting that 'one of the consequences of the development of the theory of vegetational climax has been to guide the observer's mind forwards', i. e. that 'vegetation is interpreted as a stage on the way to something' , he commented that 'it might be more healthy and scientifically more sound to look more often backwards and search for the explanation of the present in the past, to explain systems in relation to their history rather than their goal'. He went on to contrast the 'disaster theory' of plant succession, which holds that communities are a response to the effects of past disasters, with the 'climax theory', that they are stages in the approach to a climax state, and then asked 'do we account most completely for the characteristics of a population by a knowledge of its history or of its destiny?' Had this question been put to R. S. Adamson, E. J. Salisbury, A. G. Tansley or A. S. Watt, who are amongst the giants of the first forty years of woodland ecology in Britain, their answer would surely have been that understanding lies in a knowledge of destiny. Whilst not unaware of the historical facts of British woodlands, they were preoccupied with ideas of natural succession and climax, and tended to interpret their observations in these terms.

Download or read book The Mammalian Cochlear Nuclei written by Miguel A. Merchán and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 525 pages. Available in PDF, EPUB and Kindle. Book excerpt: The presence of sophisticated auditory processing in mammals has permitted perhaps the most significant evolutionary development in humans: that of language. An understanding of the neural basis of hearing is thus a starting point for elucidating the mechanisms that are essential to human communication. The cochlear nucleus is the first region of the brain to receive input from the inner ear and is therefore the earliest stage in the central nervous system at which auditory signals are processed for distribution to higher centers. Clarifying its role in the central auditory pathway is crucial to our knowledge of how the brain deals with complex stimuli such as speech, and is also essential for understanding the central effects of peripheral sensorineural hearing loss caused by, for example, aging, ototoxic drugs, and noise. Ambitious new developments to assist people with total sensorineural deafness, including both cochlear and cochleus nuclear implants, require a detailed knowledge of the neural signals received by the brainstem and how these are processed. Recently, many new data have been obtained on the structure and function of the cochlear nucleus utilizing combinations of anatomical, physiological, pharmacological and molecular biological procedures. Approaches such as intracellular dye-filling of physiologically identified neurons, localization of classical neurotransmitters, peptides, receptors and special proteins, or gene expression have opened the door to novel morphofunctional correlations.

Download or read book The Evolution of Social Behaviour in Insects and Arachnids written by Jae C. Choe and published by Cambridge University Press. This book was released on 1997-03-27 with total page 551 pages. Available in PDF, EPUB and Kindle. Book excerpt: Social insects and arachnids exhibit forms of complex behavior that involve cooperation in building a nest, defending against attackers or rearing offspring. This book is a comprehensive, up-to-date guide to sociality and its evolution in a wide range of taxa. In it, leading researchers review the extent of sociality in different insect and arachnid groups, analyze the genetic, ecological and demographic causes of sociality from a comparative perspective, and suggest ways in which the field can be better understood. The book contains fascinating accounts of the social lives of many different insects and arachnids, as well as tests of current theories of the evolution of social behavior. The Evolution of Social Behaviour in Insects and Arachnids provides essential reading and insight for students and researchers interested in social behavior, behavioral ecology, entomology, and arachnology.

Download or read book Molecules Dynamics and Life written by Agnessa Babloyantz and published by Wiley-Interscience. This book was released on 1986-10-14 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book tells the story of how inert matter can acquire self-organizing and other properties ascribed to life. The author's multidisciplinary approach does not require knowledge of chemistry, physics, or biology on the part of the reader. Part I covers the properties of matter and evolutionary criteria. Part II presents an introduction to the necessary chemical concepts. Part III explains the self-organization of biosystems and the development of organisms.

Download or read book Biology of Insect Eggs written by H. E. Hinton and published by Pergamon. This book was released on 1983-05 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Tissue Culture in Forestry written by J.M. Bonga and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: 2. IMPORTANCE OF NITROGEN METABOLISM 2. 1. Range of naturally occurring nitrogenous components in forest trees 2. 2. Gene expression and mapping 2. 3. Metabolic changes in organized and unorganized systems 2. 4. Nitrogen and nutrition 2. 5. Aspects of intermediary nitrogen metabolism 3. NITROGEN METABOLISM IN GROWTH AND DEVELOPMENT 3. 1. Precultural factors 3. 2. Callus formation 3. 3. Cell suspensions 3. 3. 1. Conifers 3. 3. 2. Acer 3. 4. Morphogenesis 3. 4. 1. Nitrogen metabolism of natural embryos 3. 4. 2. Somatic embryogenesis 3. 4. 2. 1. Sweetgum (Liquidambar styraciflua) 3. 4. 2. 2. Douglar-fir and loblolly pine 3. 4. 3. Organogenesis 4. OUTLOOK 11. CARBOHYDRATE UTILIZATION AND METABOLISM - T. A. Thorpe 325 1. INTRODUCTION 2. NUTRITIONAL ASPECTS 3. CARBOHYDRATE UPTAKE 4. CARBOHYDRATE METABOLISM 4. 1. Sucrose degradation 4. 2. Metabolism of other carbon sources 4. 3. Hexose mobilization and metabolism 4. 3. 1. Cell cycle studies 4. 3. 2. Growth studies 4. 3. 3. Organized development 4. 4. Cell wall biogenesis 4. 4. 1. Primary cell walls 4. 4. 2. Cell wall turnover 4. 4. 3. Secondary cell walls 4. 5. Carbon skeleton utilization 5. OSMOTIC ROLE 6. CONCLUDING THOUGHTS 369 12. THE USE OF IN VITRO TECHNIQUES FOR GENETIC MODIFICATIO~FOREST TREES - E. G. Kirby 1. INTRODUCTION 2. IN VITRO SELECTION 2. 1. Natural variation 2. 2. Induction of variation 2. 3. Selection techniques 2. 4. Plant regeneration 2 . • 5. Applications x 3. SOMATIC HYBRIDIZATION 3. 1.

Download or read book Principles of Social Evolution written by Andrew F.G. Bourke and published by OUP Oxford. This book was released on 2011-01-06 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: Investigates and sets out the common principles of social evolution operating across all taxa and levels of biological organisation.

Download or read book Douglas of the Forests written by David Douglas and published by Edinburgh : P. Harris Pub.. This book was released on 1979 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: Demonstrates the many ways that torn, crinkled, and smudged bits of paper can be transformed into various shapes and images.

Download or read book Atlas of United States Trees written by United States. Forest Service and published by . This book was released on 1971 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nutrition of Plantation Forests written by Glynn D. Bowen and published by . This book was released on 1984 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plantation forests. The scope and a perpective on plantation nutrition. The dynamics of plantation growth. Dynamics of nutrient cycling in plantation ecosystems. Soil characteristics influencing nutrient supply in forest soils. Biological factors influencing nutrient supply in forest soils. Biological factors influencing nutrient supply in forest soils. Tree roots and the use of nutrients. Nutrient storage, retranslocation and relationship of stress to nutrition. Effects of mineral nutrition on carbon dioxide exchange and partitioning of carbon in trees. The genetic basis of forest tree nutrition. Diagnosis of nutrient deficiencies in plantations. Wood yield and quality in relation to tree nutrition. Fertilization of plantations. Nitrogen fixation systems in forest plantations. Consequences of forest management on soil-tree relationships. Environmental aspects of plantation management. Design and analysis of tree nutrition experiments. The role of modelling in tree nutrition research and site nutrient management. Future directions in plantation nutrition research.