Frugivores and seed dispersal by Alejandro Estrada (English) Hardcover Book

Description: Frugivores and seed dispersal by Alejandro Estrada, T.H. Fleming The chapters in this volume are the Proceedings of the Satellite Symposium of the XVIth World Congress of the International Society for Heart Research on Signal Transduction in Normal and Diseased Myocardium which was held in Rotterdam at the Faculty of Medicine & Health Sciences of the Erasmus University, June 30 and July 1, 1995. Diverse and distinct auto-, para-, and endocrine stimuli arriving at the surface of endothelium, smooth muscle cells, cardiomyocytes and fibroblasts within the myocardium, engage cell type-specific receptors, which lead to transmission of signals across the cell plasma membrane and result in the production and activation of second messengers. The most common mechanism by which these second messengers function is via direct or indirect activation of specific protein kinases. The current challenge for scientists is to identify the specific substrates (e.g. metabolic enzymes, Ca2+-regulating proteins, transcription and mitotic factors) for the many protein kinases, to elucidate the biological significance of the cell type-specific expression heterogeneity of signalling proteins (e.g. membrane receptors, isoenzymes of protein kinase C, G-proteins) and to unravel the cross-talk interaction between the signalling systems (e.g. phospholipase C with adenylate cyclase and phospholipase C with phospholipase D). The multiplicity of receptor types, G-proteins, effector proteins, second messengers and protein kinases, their substrate proteins and the cross-talk interactions in the myocardium raises fundamental questions about the mechanisms that ensure the precision and timing of the myocardial responses to hormonal and pharmacological stimuli. This book provides an up-to-date source of information for all scientists and clinicians interested in the mechanisms by which external signals are transmitted to the interior and regulation of a variety of physiological, pathological and pharmacological responses. FORMAT Hardcover LANGUAGE English CONDITION Brand New Publisher Description A wide variety of plants, ranging in size from forest floor herbs to giant canopy trees, rely on animals to disperse their seeds. Typical values of the proportion of tropical vascular plants that produce fleshy fruits and have animal-dispersed seeds range from 50-90%, depending on habitat. In this section, the authors discuss this mutualism from the plants perspective. Herrera begins by challenging the notion that plant traits traditionally interpreted as being the product of fruit-frugivore coevolution really are the outcome of a response-counter-response kind of evolutionary process. He uses examples of congeneric plants living in very different biotic and abiotic environments and whose fossilizable characteristics have not changed over long periods of time to argue that there exists little or no basis for assuming that gradualistic change and environmental tracking characterizes the interactions between plants and their vertebrate seed dispersers. A common theme that runs through the papers by Herrera, Denslow et at. , and Stiles and White is the importance of the fruiting environment (i. e. the spatial relationships of conspecific and non-conspecific fruiting plants) on rates of fruit removal and patterns of seed rain. Herrera and Denslow et at. point out that this environment is largely outside the control of individual plant species and, as a result, closely coevolved interactions between vertebrates and plants are unlikely to evolve. Table of Contents 1: Plant strategies.- 1. Vertebrate-dispersed plants: why they dont behave the way they should.- 2. A seven-year study of individual variation in fruit production in tropical bird-dispersed tree species in the family Lauraceae.- 3.Spatial components of fruit display in understory trees and shrubs.- 4.Seed deposition patterns: influences of season, nutrients, and vegetation structure.- 5. Foliar flags for avian frugivores: signal or serendipity?.- 6. Dispersal of seeds by animals: effect on lightcontrolled dormancy in Cecropia obtusifolia.- 2: Frugivore strategies.- 7. Selection on plant fruiting traits by brown capuchin monkeys: a multivariate approach.- 8. Frugivory in howling monkeys (Alouatta palliata) at Los Tuxtlas, Mexico: dispersal and fate of seeds.- 9. Opportunism versus specialization: the evolution of feeding strategies in frugivorous bats.- 10. Inter-relations between frugivorous vertebrates and pioneer plants: Cecropia, birds and bats in French Guyana.- 11. The influence of morphology on fruit choice in neotropical birds.- 12. Methods of seed processing by birds and seed deposition patterns.- 13. Some aspects of avian frugivory in a north temperate area relevant to tropical forest.- 3: The consequences of seed dispersal.- 14. Seed dispersal and environmental heterogeneity in a neotropical herb: a model of population and patch dynamics.- 15. Consequences of seed dispersal for gap-dependent plants: relationships between seed shadows, germination requirements, and forest dynamic processes.- 16. Seed dispersal mutualism and the population density of Asarum canadense, an ant-dispersed plant.- 17. The influence of seed dispersal mechanisms on the genetic structure of plant populations.- 18. Seed dispersal by birds and squirrels in the deciduous forestsof the United States.- 19. Seed shadows, seed predation and the advantages of dispersal.- 20. Mice, big mammals, and seeds: it matters who defecates what where.- 21. Seed predation and dispersal in a dominant desert plant: Opuntia, ants, birds, and mammals.- 22. Agoutis (Dasyprocta punctata), the inheritors of guapinol (Hymenaea courbaril: Leguminosae).- 4: Community aspects of frugivory and seed dispersal.- 23. Relationships between dispersal syndrome and characteristics of populations of trees in a subtropical forest.- 24. Seed dispersal, gap colonization, and the case of Cecropia insignis.- 25. Seed dispersal, gap dynamics and tree recruitment: the case of Cecropia obtusifolia at Los Tuxtlas, Mexico.- 26. Constraints on the timing of seed germination in a tropical forest.- 27. Dispersal and the sequential plant communities in Amazonian Peru floodplain.- 28. Community aspects of frugivory in tropical forests. Review `This book is a must for every seed dispersal ecologist, and is, therefore, higly recommended. S. Godschalk, South American Journal on Zoology, 1989. `... this book is a valuable source of information and methodological approaches for all students who are and will be attracted by this field of modern ecology. L. Klimes, Folia Geobotanica et Phytotaxonomica, Vol. 24, 1989. Long Description A wide variety of plants, ranging in size from forest floor herbs to giant canopy trees, rely on animals to disperse their seeds. Typical values of the proportion of tropical vascular plants that produce fleshy fruits and have animal-dispersed seeds range from 50-90%, depending on habitat. In this section, the authors discuss this mutualism from the plants perspective. Herrera begins by challenging the notion that plant traits traditionally interpreted as being the product of fruit-frugivore coevolution really are the outcome of a response-counter-response kind of evolutionary process. He uses examples of congeneric plants living in very different biotic and abiotic environments and whose fossilizable characteristics have not changed over long periods of time to argue that there exists little or no basis for assuming that gradualistic change and environmental tracking characterizes the interactions between plants and their vertebrate seed dispersers. A common theme that runs through the papers by Herrera, Denslow et at. , and Stiles and White is the importance of the fruiting environment (i. e. the spatial relationships of conspecific and non-conspecific fruiting plants) on rates of fruit removal and patterns of seed rain. Herrera and Denslow et at. point out that this environment is largely outside the control of individual plant species and, as a result, closely coevolved interactions between vertebrates and plants are unlikely to evolve. Review Text This book is a must for every seed dispersal ecologist, and is, therefore, higly recommended. S. Godschalk, South American Journal on Zoology, 1989. ... this book is a valuable source of information and methodological approaches for all students who are and will be attracted by this field of modern ecology. L. Klimes, Folia Geobotanica et Phytotaxonomica, Vol. 24, 1989. Review Quote This book is a must for every seed dispersal ecologist, and is, therefore, higly recommended. S. Godschalk, South American Journal on Zoology, 1989. ... this book is a valuable source of information and methodological approaches for all students who are and will be attracted by this field of modern ecology. L. Klimes, Folia Geobotanica et Phytotaxonomica, Vol. 24, 1989. Details ISBN9061935431 Series Tasks for Vegetation Science Year 1986 ISBN-10 9061935431 ISBN-13 9789061935438 Format Hardcover Imprint Kluwer Academic Publishers Place of Publication Dordrecht Country of Publication Netherlands Edited by Alejandro Estrada Publisher Springer Short Title FRUGIVORES & SEED DISPERSAL Language English Media Book Series Number 15 DEWEY 582.016 Pages 392 Illustrations XIV, 392 p. DOI 10.1023/b123182;10.1007/978-94-009-4812-9 Publication Date 1986-06-30 Author T.H. Fleming Alternative 9789401086332 Audience Postgraduate, Research & Scholarly We've got this At The Nile, if you're looking for it, we've got it. With fast shipping, low prices, friendly service and well over a million items - you're bound to find what you want, at a price you'll love! TheNile_Item_ID:134991865;

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