The Theory of Ecological Communities (MPB-57) PDF Download
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Author: Mark Vellend
Publisher: Princeton University Press
ISBN: 0691208999
Category : Science
Languages : en
Pages : 246
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Book Description
A plethora of different theories, models, and concepts make up the field of community ecology. Amid this vast body of work, is it possible to build one general theory of ecological communities? What other scientific areas might serve as a guiding framework? As it turns out, the core focus of community ecology—understanding patterns of diversity and composition of biological variants across space and time—is shared by evolutionary biology and its very coherent conceptual framework, population genetics theory. The Theory of Ecological Communities takes this as a starting point to pull together community ecology's various perspectives into a more unified whole. Mark Vellend builds a theory of ecological communities based on four overarching processes: selection among species, drift, dispersal, and speciation. These are analogues of the four central processes in population genetics theory—selection within species, drift, gene flow, and mutation—and together they subsume almost all of the many dozens of more specific models built to describe the dynamics of communities of interacting species. The result is a theory that allows the effects of many low-level processes, such as competition, facilitation, predation, disturbance, stress, succession, colonization, and local extinction to be understood as the underpinnings of high-level processes with widely applicable consequences for ecological communities. Reframing the numerous existing ideas in community ecology, The Theory of Ecological Communities provides a new way for thinking about biological composition and diversity.
Author: Mark Vellend
Publisher: Princeton University Press
ISBN: 0691208999
Category : Science
Languages : en
Pages : 246
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Book Description
A plethora of different theories, models, and concepts make up the field of community ecology. Amid this vast body of work, is it possible to build one general theory of ecological communities? What other scientific areas might serve as a guiding framework? As it turns out, the core focus of community ecology—understanding patterns of diversity and composition of biological variants across space and time—is shared by evolutionary biology and its very coherent conceptual framework, population genetics theory. The Theory of Ecological Communities takes this as a starting point to pull together community ecology's various perspectives into a more unified whole. Mark Vellend builds a theory of ecological communities based on four overarching processes: selection among species, drift, dispersal, and speciation. These are analogues of the four central processes in population genetics theory—selection within species, drift, gene flow, and mutation—and together they subsume almost all of the many dozens of more specific models built to describe the dynamics of communities of interacting species. The result is a theory that allows the effects of many low-level processes, such as competition, facilitation, predation, disturbance, stress, succession, colonization, and local extinction to be understood as the underpinnings of high-level processes with widely applicable consequences for ecological communities. Reframing the numerous existing ideas in community ecology, The Theory of Ecological Communities provides a new way for thinking about biological composition and diversity.
Author: Graham A. W. Rook
Publisher: Springer Nature
ISBN: 3030910512
Category : Medical
Languages : en
Pages : 421
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Book Description
This edited collection of 12 chapters by research workers from a wide range of disciplines resolves the confusion that currently surrounds the “hygiene hypothesis” by considering the human need for exposure to microorganisms from an evolutionary point of view. The book explains why we evolved a requirement for exposure to microbiota from our mothers, from other people, and from the natural environment. It also explains the physiological roles of these exposures, what goes wrong when the exposures are distorted and how human lifestyles and activities, including degradation of the natural environment, are leading to this distortion. Particular attention is given to the range of pathologies associated with inappropriate microbial exposures and inappropriate colonization, including immunoregulatory problems such as allergies and autoimmunity, metabolic problems such as obesity and diabetes, and problems of central nervous system function and neurodegeneration. This book is of profound relevance to most medical disciplines, but also to those concerned with preserving the natural environment and with developing healthier urbanisation.
Author: Mario Barletta
Publisher: Frontiers Media SA
ISBN: 2889660818
Category : Science
Languages : en
Pages : 228
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Book Description
The ‘Aquatic Habitat Conservation in South America’ Symposium occurred during the XXI Brazilian Society of Ichthyology Meeting. The proceedings were published as a special issue in the Journal of Fish Biology (vol. 89, Number 1, June 2016). In this special issue, authors provided an analytical overview of problems faced by the conservation of fishes and aquatic habitats of South America. Habitat loss emerged as the greatest concern for all South American aquatic ecosystems, with a long list of causes related to unsustainable development models. Based on this finding, we would like to extend this topic to other continents, different climates, fauna and flora around the world. Our goal is to provide a comprehensive and multidisciplinary overview of variables that influence flora and fauna distributions and shape their ecological interactions within aquatic ecosystems
Author: Jeremy D. Allison
Publisher: Springer Nature
ISBN: 3031115538
Category : Science
Languages : en
Pages : 810
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Book Description
This open access book will provide an introduction to forest entomology, the principles and techniques of forest insect pest management, the different forest insect guilds/feeding groups, and relevant forest insect pest management case studies. In addition to covering 30% of the earth, forest ecosystems provide numerous timber and non-timber products that affect our daily lives and recreational opportunities, habitat for diverse animal communities, watershed protection, play critical roles in the water cycle, and mitigate soil erosion and global warming. In addition to being the most abundant organisms in forest ecosystems, insects perform numerous functions in forests, many of which are beneficial and critical to forest health. Conversely, some insects damage and/or kill trees and reduce the capacity of forests to provide desired ecosystem services. The target audience of this book is upper-level undergraduate and graduate students and professionals interested in forest health and entomology.
Author: Theodore H. Fleming
Publisher: University of Chicago Press
ISBN: 022669626X
Category : Science
Languages : en
Pages : 489
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Book Description
With more than two hundred species distributed from California through Texas and across most of mainland Mexico, Central and South America, and islands in the Caribbean Sea, the Phyllostomidae bat family (American leaf-nosed bats) is one of the world’s most diverse mammalian families. From an insectivorous ancestor, species living today, over about 30 million years, have evolved a hyper-diverse range of diets, from blood or small vertebrates, to consuming nectar, pollen, and fruit. Phyllostomid plant-visiting species are responsible for pollinating more than five hundred species of neotropical shrubs, trees, vines, and epiphytes—many of which are economically and ecologically important—and they also disperse the seeds of at least another five hundred plant species. Fruit-eating and seed-dispersing members of this family thus play a crucial role in the regeneration of neotropical forests, and the fruit eaters are among the most abundant mammals in these habitats. Coauthored by leading experts in the field and synthesizing the latest advances in molecular biology and ecological methods, Phyllostomid Bats is the first overview in more than forty years of the evolution of the many morphological, behavioral, physiological, and ecological adaptations in this family. Featuring abundant illustrations as well as details on the current conservation status of phyllostomid species, it is both a comprehensive reference for these ecologically vital creatures and a fascinating exploration of the evolutionary process of adaptive radiation.
Author: Astrid Oberborbeck Andersen
Publisher: U of Minnesota Press
ISBN: 145296839X
Category : Social Science
Languages : en
Pages : 458
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Book Description
A methodological follow-up to Arts of Living on a Damaged Planet The environmental and climatic crises of our time are fundamentally multispecies crises. And the Anthropocene, a time of “human-made” disruptions on a planetary scale, is a disruption of the fabric of life as a whole. The contributors to Rubber Boots Methods for the Anthropocene argue that understanding the multispecies nature of these disruptions requires multispecies methods. Answering methodological challenges posed by the Anthropocene, Rubber Boots Methods for the Anthropocene retools the empirical study of the socioecological chaos of the contemporary moment across the arts, human science, and natural science. Based on critical landscape history, multispecies curiosity, and collaboration across disciplines and knowledge systems, the volume presents thirteen transdisciplinary accounts of practical methodological experimentation, highlighting diverse settings ranging from the High Arctic to the deserts of southern Africa and from the pampas of Argentina to the coral reefs of the Western Pacific, always insisting on the importance of firsthand, “rubber boots” immersion in the field. The methodological companion to Arts of Living on a Damaged Planet: Ghosts and Monsters of the Anthropocene (Minnesota, 2017), this collection puts forth empirical studies of the multispecies messiness of contemporary life that investigate some of the critical questions of our time. Contributors: Filippo Bertoni, Museum für Naturkunde, Berlin; Harshavardhan Bhat, U of Westminster; Nathalia Brichet, U of Copenhagen; Janne Flora, Aarhus U, Denmark; Natalie Forssman, U of British Columbia; Peter Funch, Aarhus U; Kirsten Hastrup, U of Copenhagen; Colin Hoag, Smith College; Joseph Klein, U of California, Santa Cruz; Andrew S. Mathews, U of California, Santa Cruz; Daniel Münster, U of Oslo; Ursula Münster, U of Oslo; Jon Rasmus Nyquist, U of Oslo; Katy Overstreet, U of Copenhagen; Pierre du Plessis, U of Oslo; Meredith Root-Bernstein; Heather Anne Swanson, Aarhus U; Anna Lowenhaupt Tsing, U of California, Santa Cruz; Stine Vestbo.
Author: Peter Deines
Publisher: Frontiers Media SA
ISBN: 2832506798
Category : Science
Languages : en
Pages : 152
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Book Description
Author: Vikas Kumar
Publisher: Frontiers Media SA
ISBN: 2889747158
Category : Science
Languages : en
Pages : 155
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Book Description
Author: Stephen P. Hubbell
Publisher: Princeton University Press
ISBN: 9780691021287
Category : Mathematics
Languages : en
Pages : 394
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Book Description
Despite its importance and the threat of its global crash, biodiversity is poorly understood both empirically and theoretically. This work presents a neutral, general theory to explain the origin, maintenance and loss of biodiversity in a biogeographical context.
Author: David Tilman
Publisher: Princeton University Press
ISBN: 0691209650
Category : Science
Languages : en
Pages : 310
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Book Description
One of the central questions of ecology is why there are so many different kinds of plants and animals. Here David Tilman presents a theory of how organisms compete for resources and the way their competition promotes diversity. Developing Hutchinson's suggestion that the main cause of diversity is the feeding relations of species, this book builds a mechanistic, resource-based explanation of the structure and functioning of ecological communities. In a detailed analysis of the Park Grass Experiments at the Rothamsted Experimental Station in England, the author demonstrates that the dramatic results of these 120 years of experimentation are consistent with his theory, as are observations in many other natural communities. The consumer-resource approach of this book is applicable to both animal and plant communities, but the majority of Professor Tilman's discussion concentrates on the structure of plant communities. All theoretical arguments are developed graphically, and formal mathematics is kept to a minimum. The final chapters of the book provide some testable speculations about resources and animal communities and explore such problems as the evolution of "super species," the differences between plant and animal community diversity patterns, and the cause of plant succession.
