Download or read book Spatial Genetic Consequences of Seed Dispersal written by Charles Frederick Williams and published by . This book was released on 1991 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dispersal Ecology and Evolution written by Jean Clobert and published by OUP Oxford. This book was released on 2012-09-27 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: Now that so many ecosystems face rapid and major environmental change, the ability of species to respond to these changes by dispersing or moving between different patches of habitat can be crucial to ensuring their survival. Understanding dispersal has become key to understanding how populations may persist. Dispersal Ecology and Evolution provides a timely and wide-ranging overview of the fast expanding field of dispersal ecology, incorporating the very latest research. The causes, mechanisms, and consequences of dispersal at the individual, population, species, and community levels are considered. Perspectives and insights are offered from the fields of evolution, behavioural ecology, conservation biology, and genetics. Throughout the book theoretical approaches are combined with empirical data, and care has been taken to include examples from as wide a range of species as possible - both plant and animal.

Download or read book Reproductive Ecology of Tropical Forest Plants written by K.S. Bawa and published by CRC Press. This book was released on 1991-01-15 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reproductive Ecology of Tropical Forest Plants reviews recent developments in the reproductive ecology of tropical forest plants and explores the implications of current findings on forest structure, function, management, and conservation. It examines how insights gained from reproductive ecology can be helpful in the management of tropical forest resources and discusses directions of future research.

Download or read book Biological Invasions Theory and Practice written by Nanako Shigesada and published by Oxford University Press, UK. This book was released on 1997-02-06 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with the ecological effect a species can have when it moves into an environment that it has not previously occupied (commonly referred to as an 'Invasion'). It is unique in presenting a clear and accessible introduction to a highly complex area - the modelling of biological invasions. The book presents the latest theories and models developed from studies into this crucial area. It includes data and examples from biological case studies showing how the models can be applied to the study of invasions, whether dealing with AIDS, the European rabbit, or prickly pear cactuses. - ;In nature, all organisms migrate or disperse to some extent, either by walking, swimming, flying, or being transported by wind or water. When a species succeeds in colonising an area that it has not previously inhabited, this is referred to as an `invasion'. Humans can precipitate biological invasions often spreading disease or pests by their travels around the world. Using the large amount of data that has been collected from studies worldwide, ranging from pest control to epidemiology, it has been possible to construct mathematical models that can predict which species will become an invader, what kind of habitat is susceptible to invasion by a particular species, and how fast an invasion will spread if it occurs. This book presents a clear and accessible introduction to this highly complex area. Included are data and examples from biological case studies showing how these models can be applied to the study of invasions, whether dealing with AIDS, the European rabbit, or prickly pear cactuses. -

Download or read book Plant Density Effects on Genetic Variation and Dispersal for Two Co occurring Persoonia Species written by Jessica Anne Stingemore and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: [Truncated abstract] Genetic variation is spatially structured at different scales, such as population, subpopulation or among neighbouring individuals. This spatial genetic structure is typically a product of environmental influences and ecological factors affecting reproduction and dispersal are likely to be particularly important in determining genetic structure. Consequently, information about ecological factors such as plant density, pollen dispersal and seed dispersal represent important processes for conservation managers. In this thesis, molecular markers are applied to better understand patterns and processes effecting genetic variation in two co-occurring tree congeners, chosen because they have densities that are typically three orders of magnitude different, yet near identical life-history parameters. Persoonia longifolia occurs in the southwest jarrah (Eucalyptus marginata) forest of Western Australia in relatively high densities, while P. elliptica occurs largely at very low densities. To develop molecular markers for these two broadly distributed tree species, microsatellite markers developed for the southeast Australian P. mollis were initially screened for amplification in individuals of both P. elliptica and P. longifolia. This cross amplification of primers was unsuccessful for both study species. Therefore, microsatellite enriched libraries and 454 GS-FLX shotgun sequencing were employed to identify nine microsatellite loci for P. elliptica (one 454; eight cloning) and six loci for P. longifolia (three 454; three cloning). The microsatellites identified in this study enabled the examination of spatial structuring of genetic diversity and pollen and seed dispersal characteristics in P. elliptica and P. longifolia.

Download or read book Genomics of Tree Crops written by R.J. Schnell and published by Springer Science & Business Media. This book was released on 2012-08-01 with total page 377 pages. Available in PDF, EPUB and Kindle. Book excerpt: Trees that are indispensably supportive to human life pose a formidable challenge to breed them to suit to human needs. From soft drinks to breweries to beverages to oil to tires, the value added products from trees give a spectrum of products to human kind. While attempts to tap these resources through conventional breeding are underway, the quick and elegant way of manipulating the genetic systems at the genome level is an essential chapter of modern science. Books featuring genomics of tree crops are few, and genomics is such a science that changes rapidly. Genomics of Tree Crops is an earnest attempt towards compiling genomics of tree crops. Plant genomics has made monumental strides in the last decade providing insights into intra-genomic phenomena such as heterosis, epistasis, pleiotropy and other interactions between loci and alleles within the genome. In contrast, the investigation of the roles and functions of single genes is a primary focus of molecular biology and is a common topic of modern genetic research. A genome is the sum total of all of an individual organism's genes. Thus, genomics is the study of all the genes of a cell, or tissue, at the DNA (genotype), mRNA (transcriptome), or protein (proteome) levels. The complete sequencing of the three billion base pair human genome with 25,000 genes identified and the invention of DNA microarrays ushered in a new era in the science of genomics leading to explosive advancements in oncology diagnostics. This impetus into the genomics era lead the way toward advances in plant genomics which started with Arabidopsis thaliana and went through an array of crops such as rice, maize, papaya, various cereals and legumes, with pigeon pea added to the list towards the end of 2011. Trees, on the other hand, are the least attended taxa with regard to genomic research. Some of the areas that attained attention of the scientists are: DNA sequencing, bioinformatics, genomics of flowering, gene flow, spatial structure, local adaptation and assisted migration in trees, transformation of fruit trees, genomics of tropical and temperate fruit trees, genomics of Hevea rubber, genomics of papaya and genomics of palms. Genomics of Tree Crops compiles this information with chapters authored by experts on these crops.

Download or read book Understanding the Consequences of Spatial Environmental Variation in a Serpentine Mosaic Landscape written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental heterogeneity is ubiquitous in natural systems and in part determines the distributions of plant species both on landscape and local spatial scales. Broadly distributed plant species can respond to environmental heterogeneity via genetic differentiation between populations occurring in distinct patches of environments that are large relative to the spatial scale of dispersal (coarse grained). Fine grained heterogeneity in nutrient, light and water availability occurs on spatial scales that are relevant to seed and pollen dispersal (0.5 to 10m) and is an important determinant of the success of lineages within a population. Dispersing progeny exposed to fine grained heterogeneity can respond via phenotypic plasticity, which enables a single genotype to produce alternative phenotypes in response to its environment. Serpentine soils in Northern California impose harsh and variable abiotic stress on non-adapted plants and have been partially invaded by the invasive annual plant Erodium cicutarium. My dissertation research utilized greenhouse and field experiments to address the following questions in populations of E. cicutarium growing on and off serpentine soils: 1) What is the effect of spatial variation in environmental factors on lifetime fitness on serpentine and non-serpentine soils?, 2) What are the fitness consequences of genetic variation in the expression of phenotypic plasticity in response to continuous multivariate edaphic gradients?, and 3) Do differences in the pattern of spatial edaphic variation within patches of serpentine and non-serpentine soils generate differential selection on the expression of plasticity between soil types? Overall, I demonstrated substantial genetic variation in the expression of phenotypic plasticity by E. cicutarium in response to continuous environmental variation. The fitness consequences of this plasticity were often specific to the trait and environment considered, however the strength of selection on plasticity was significantly stronger on serpentine soils. This differential selection on plasticity was associated with greater small scale edaphic heterogeneity in patches of serpentine soils relative to non-serpentine soils. Additionally, differences in the level of small scale environmental heterogeneity on serpentine and non-serpentine soils generated differential selection on seed dispersal distance in E. cicutarium between soil types.

Download or read book Seed Dispersal and Frugivory written by Douglas John Levey and published by CABI. This book was released on 2002 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides information on the historical and theoretical perspectives of biodiversity and ecology in tropical forests, plant and animal behaviour towards seed dispersal and plant-animal interactions within forest communities, consequences of seed dispersal, and conservation, biodiversity and management.

Download or read book Modeling Movement written by Charlotte Tina Lee and published by . This book was released on 2002 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Rotational Shepherding on Plant Dispersal and Gene Flow in Fragmented Calcareous Grasslands written by Yessica Rico Mancebo del Castillo and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dispersal Ecology written by British Ecological Society. Symposium and published by Cambridge University Press. This book was released on 2002-08 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dispersal has become central to many questions in theoretical and applied ecology in recent years. In this volume a team of leading ecologists aim to provide the advanced student and researcher with a comprehensive review of dispersal and its implications for modern ecology.

Download or read book Dispersal in Plants written by Roger Cousens and published by Oxford University Press. This book was released on 2008-03-06 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Propagule, evolution.

Download or read book Seed Dispersal written by Andrew J. Dennis and published by CABI. This book was released on 2007 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fresh concepts in the study of seed dispersal are spurring a host of exciting new questions, new answers to old questions, new methods and approaches, and a reinvigoration of the field.Seed Dispersal: Theory and its Application in a Changing World presents both recent advances and reviews of current knowledge demonstrating the vigour and vibrancy of the field. It provides new perspectives and directions at a time when efforts to meet growing environmental challenges threatening natural systems are of utmost importance.

Download or read book Conceptual Breakthroughs in Evolutionary Ecology written by Laurence Mueller and published by Academic Press. This book was released on 2019-11-19 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although biologists recognize evolutionary ecology by name, many only have a limited understanding of its conceptual roots and historical development. Conceptual Breakthroughs in Evolutionary Ecology fills that knowledge gap in a thought-provoking and readable format. Written by a world-renowned evolutionary ecologist, this book embodies a unique blend of expertise in combining theory and experiment, population genetics and ecology. Following an easily-accessible structure, this book encapsulates and chronologizes the history behind evolutionary ecology. It also focuses on the integration of age-structure and density-dependent selection into an understanding of life-history evolution. Covers over 60 seminal breakthroughs and paradigm shifts in the field of evolutionary biology and ecology Modular format permits ready access to each described subject Historical overview of a field whose concepts are central to all of biology and relevant to a broad audience of biologists, science historians, and philosophers of science

Download or read book Structured Population Models in Marine Terrestrial and Freshwater Systems written by Shripad Tuljapurkar and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the summer of 1993, twenty-six graduate and postdoctoral stu dents and fourteen lecturers converged on Cornell University for a summer school devoted to structured-population models. This school was one of a series to address concepts cutting across the traditional boundaries separating terrestrial, marine, and freshwa ter ecology. Earlier schools resulted in the books Patch Dynamics (S. A. Levin, T. M. Powell & J. H. Steele, eds., Springer-Verlag, Berlin, 1993) and Ecological Time Series (T. M. Powell & J. H. Steele, eds., Chapman and Hall, New York, 1995); a book on food webs is in preparation. Models of population structure (differences among individuals due to age, size, developmental stage, spatial location, or genotype) have an important place in studies of all three kinds of ecosystem. In choosing the participants and lecturers for the school, we se lected for diversity-biologists who knew some mathematics and mathematicians who knew some biology, field biologists sobered by encounters with messy data and theoreticians intoxicated by the elegance of the underlying mathematics, people concerned with long-term evolutionary problems and people concerned with the acute crises of conservation biology. For four weeks, these perspec tives swirled in discussions that started in the lecture hall and carried on into the sweltering Ithaca night. Diversity mayor may not increase stability, but it surely makes things interesting.

Download or read book Spatial Ecology written by David Tilman and published by Princeton University Press. This book was released on 2018-06-05 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spatial Ecology addresses the fundamental effects of space on the dynamics of individual species and on the structure, dynamics, diversity, and stability of multispecies communities. Although the ecological world is unavoidably spatial, there have been few attempts to determine how explicit considerations of space may alter the predictions of ecological models, or what insights it may give into the causes of broad-scale ecological patterns. As this book demonstrates, the spatial structure of a habitat can fundamentally alter both the qualitative and quantitative dynamics and outcomes of ecological processes. Spatial Ecology highlights the importance of space to five topical areas: stability, patterns of diversity, invasions, coexistence, and pattern generation. It illustrates both the diversity of approaches used to study spatial ecology and the underlying similarities of these approaches. Over twenty contributors address issues ranging from the persistence of endangered species, to the maintenance of biodiversity, to the dynamics of hosts and their parasitoids, to disease dynamics, multispecies competition, population genetics, and fundamental processes relevant to all these cases. There have been many recent advances in our understanding of the influence of spatially explicit processes on individual species and on multispecies communities. This book synthesizes these advances, shows the limitations of traditional, non-spatial approaches, and offers a variety of new approaches to spatial ecology that should stimulate ecological research.

Download or read book Quantitative Analysis of Movement written by Peter Turchin and published by Sinauer Associates Incorporated. This book was released on 1998-01-01 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last two decades it has become increasingly clear that the spatial dimension is a critically important aspect of ecological dynamics. Ecologists are currently investing an enormous amount of effort in quantifying movement patterns of organisms. Connecting these data to general issues in metapopulation biology and landscape ecology, as well as to applied questions in conservation and natural resource management, however, has proved to be a non-trivial task. This book presents a systematic exposition of quantitative methods for analyzing and modeling movements of organisms in the field. Quantitative Analysis of Movement is intended for graduate students and researchers interested in spatial ecology, including applications to conservation, pest control, and fisheries. Models are a key ingredient in the analytical approaches developed in the book; however, the primary focus is not on mathematical methods, but on connections between models and data. The methodological approaches discussed in the book will be useful to ecologists working with all taxonomic groups. Case studies have been selected from a wide variety of organisms, including plants (seed dispersal, spatial spread of clonal plants), insects, and vertebrates (primarily, fish, birds, and mammals).