[PDF] Community Food Webs eBook

Author : Ken Meter
Publisher : Island Press
Page : 306 pages
File Size : 11,31 MB
Release : 2021-04-29
Category : Social Science
ISBN : 1642831476

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Our current food system has decimated rural communities and confined the choices of urban consumers. Even while America continues to ramp up farm production to astounding levels, net farm income is now lower than at the onset of the Great Depression, and one out of every eight Americans faces hunger. But a healthier and more equitable food system is possible. In Building Community Food Webs, Ken Meter shows how grassroots food and farming leaders across the U.S. are tackling these challenges by constructing civic networks. Overturning extractive economic structures, these inspired leaders are engaging low-income residents, farmers, and local organizations in their quest to build stronger communities. Community food webs strive to build health, wealth, capacity, and connection. Their essential element is building greater respect and mutual trust, so community members can more effectively empower themselves and address local challenges. Farmers and researchers may convene to improve farming practices collaboratively. Health clinics help clients grow food for themselves and attain better health. Food banks engage their customers to challenge the root causes of poverty. Municipalities invest large sums to protect farmland from development. Developers forge links among local businesses to strengthen economic trade. Leaders in communities marginalized by our current food system are charting a new path forward. Building Community Food Webs captures the essence of these efforts, underway in diverse places including Montana, Hawai‘i, Vermont, Arizona, Colorado, Indiana, and Minnesota. Addressing challenges as well as opportunities, Meter offers pragmatic insights for community food leaders and other grassroots activists alike.

Author : Joel E. Cohen
Publisher : Springer Science & Business Media
Page : 318 pages
File Size : 35,69 MB
Release : 2012-12-06
Category : Medical
ISBN : 3642837840

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Food webs hold a central place in ecology. They describe which organisms feed on which others in natural habitats. This book describes recently discovered empirical regularities in real food webs: it proposes a novel theory unifying many of these regularities, as well as extensive empirical data. After a general introduction, reviewing the empirical and theoretical discoveries about food webs, the second portion of the book shows that community food webs obey several striking phenomenological regularities. Some of these unify, regardless of habitat. Others differentiate, showing that habitat significantly influences structure. The third portion of the book presents a theoretical analysis of some of the unifying empirical regularities. The fourth portion of the book presents 113 community food webs. Collected from scattered sources and carefully edited, they are the empirical basis for the results in the volume. The largest available set of data on community food webs provides a valuable foundation for future studies of community food webs. The book is intended for graduate students, teachers and researchers primarily in ecology. The theoretical portions of the book provide materials useful to teachers of applied combinatorics, in particular, random graphs. Researchers in random graphs will find here unsolved mathematical problems.

Author : Gary A. Polis
Publisher : Springer Science & Business Media
Page : 475 pages
File Size : 50,71 MB
Release : 2013-04-17
Category : Science
ISBN : 1461570077

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Reflecting the recent surge of activity in food web research fueled by new empirical data, this authoritative volume successfully spans and integrates the areas of theory, basic empirical research, applications, and resource problems. Written by recognized leaders from various branches of ecological research, this work provides an in-depth treatment of the most recent advances in the field and examines the complexity and variability of food webs through reviews, new research, and syntheses of the major issues in food web research. Food Webs features material on the role of nutrients, detritus and microbes in food webs, indirect effects in food webs, the interaction of productivity and consumption, linking cause and effect in food webs, temporal and spatial scales of food web dynamics, applications of food webs to pest management, fisheries, and ecosystem stress. Three comprehensive chapters synthesize important information on the role of indirect effects, productivity and consumer regulation, and temporal, spatial and life history influences on food webs. In addition, numerous tables, figures, and mathematical equations found nowhere else in related literature are presented in this outstanding work. Food Webs offers researchers and graduate students in various branches of ecology an extensive examination of the subject. Ecologists interested in food webs or community ecology will also find this book an invaluable tool for understanding the current state of knowledge of food web research.

Author : Stuart L. Pimm
Publisher : University of Chicago Press
Page : 268 pages
File Size : 41,17 MB
Release : 2002-05-30
Category : Nature
ISBN : 9780226668321

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Food webs are diagrams depicting which species interact or in other words, who eats whom. An understanding of the structure and function of food webs is crucial for any study of how an ecosystem works, including attempts to predict which communities might be more vulnerable to disturbance and therefore in more immediate need of conservation. Although it was first published twenty years ago, Stuart Pimm's Food Webs remains the clearest introduction to the study of food webs. Reviewing various hypotheses in the light of theoretical and empirical evidence, Pimm shows that even the most complex food webs follow certain patterns and that those patterns are shaped by a limited number of biological processes, such as population dynamics and energy flow. Pimm provides a variety of mathematical tools for unravelling these patterns and processes, and demonstrates their application through concrete examples. For this edition, he has written a new foreword covering recent developments in the study of food webs and demonstrates their continuing importance to conservation biology.

Author : Kevin S. McCann
Publisher : Princeton University Press
Page : 255 pages
File Size : 37,74 MB
Release : 2012
Category : Science
ISBN : 0691134189

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This book synthesizes and reconciles modern and classical perspectives into a general unified theory.

Author : Peter C de Ruiter
Publisher : Elsevier
Page : 616 pages
File Size : 44,1 MB
Release : 2005-12-20
Category : Science
ISBN : 0080460941

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Dynamic Food Webs challenges us to rethink what factors may determine ecological and evolutionary pathways of food web development. It touches upon the intriguing idea that trophic interactions drive patterns and dynamics at different levels of biological organization: dynamics in species composition, dynamics in population life-history parameters and abundances, and dynamics in individual growth, size and behavior. These dynamics are shown to be strongly interrelated governing food web structure and stability and the role of populations and communities play in ecosystem functioning. Dynamic Food Webs not only offers over 100 illustrations, but also contains 8 riveting sections devoted to an understanding of how to manage the effects of environmental change, the protection of biological diversity and the sustainable use of natural resources. Dynamic Food Webs is a volume in the Theoretical Ecology series. Relates dynamics on different levels of biological organization: individuals, populations, and communities Deals with empirical and theoretical approaches Discusses the role of community food webs in ecosystem functioning Proposes methods to assess the effects of environmental change on the structure of biological communities and ecosystem functioning Offers an analyses of the relationship between complexity and stability in food webs

Author : Joel E. Cohen
Publisher : Princeton University Press
Page : 210 pages
File Size : 26,27 MB
Release : 2020-03-31
Category : Science
ISBN : 0691209448

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What is the minimum dimension of a niche space necessary to represent the overlaps among observed niches? This book presents a new technique for obtaining a partial answer to this elementary question about niche space. The author bases his technique on a relation between the combinatorial structure of food webs and the mathematical theory of interval graphs. Professor Cohen collects more than thirty food webs from the ecological literature and analyzes their statistical and combinatorial properties in detail. As a result, he is able to generalize: within habitats of a certain limited physical and temporal heterogeneity, the overlaps among niches, along their trophic (feeding) dimensions, can be represented in a one-dimensional niche space far more often than would be expected by chance alone and perhaps always. This compatibility has not previously been noticed. It indicates that real food webs fall in a small subset of the mathematically possible food webs. Professor Cohen discusses other apparently new features of real food webs, including the constant ratio of the number of kinds of prey to the number of kinds of predators in food webs that describe a community. In conclusion he discusses possible extensions and limitations of his results and suggests directions for future research.

Author : Gary A. Polis
Publisher : University of Chicago Press
Page : 566 pages
File Size : 17,51 MB
Release : 2004-02-22
Category : Science
ISBN : 0226673278

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Paying special attention to the fertile boundaries between terrestrial, freshwater, and marine ecosystems, this work shows not only what this new methodology means for ecology, conservation, and agriculture but also serves as a fitting tribute to Gary Polis and his major contributions to the field

Author : Catherine Bukowski
Publisher : Chelsea Green Publishing
Page : 274 pages
File Size : 20,2 MB
Release : 2018
Category : Architecture
ISBN : 160358644X

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Collaboration and leadership strategies for long-term success Fueled by the popularity of permaculture and agroecology, community food forests are capturing the imaginations of people in neighborhoods, towns, and cities across the United States. Along with community gardens and farmers markets, community food forests are an avenue toward creating access to nutritious food and promoting environmental sustainability where we live. Interest in installing them in public spaces is on the rise. People are the most vital component of community food forests, but while we know more than ever about how to design food forests, the ways in which to best organize and lead groups of people involved with these projects has received relatively little attention. In The Community Food Forest Handbook, Catherine Bukowski and John Munsell dive into the civic aspects of community food forests, drawing on observations, group meetings, and interviews at over 20 projects across the country and their own experience creating and managing a food forest. They combine the stories and strategies gathered during their research with concepts of community development and project management to outline steps for creating lasting public food forests that positively impact communities. Rather than rehash food forest design, which classic books such as Forest Gardening and Edible Forest Gardens address in great detail, The Community Food Forest Handbook uses systems thinking and draws on social change theory to focus on how to work with diverse groups of people when conceiving of, designing, and implementing a community food forest. To find practical ground, the authors use management phases to highlight the ebb and flow of community capitals from a project's inception to its completion. They also explore examples of positive feedbacks that are often unexpected but offer avenues for enhancing the success of a community food forest. The Community Food Forest Handbook provides readers with helpful ideas for building and sustaining momentum, working with diverse public and private stakeholders, integrating assorted civic interests and visions within one project, creating safe and attractive sites, navigating community policies, positively affecting public perception, and managing site evolution and adaptation. Its concepts and examples showcase the complexities of community food forests, highlighting the human resilience of those who learn and experience what is possible when they collaborate on a shared vision for their community.

Author : R. L. Kitching
Publisher : Cambridge University Press
Page : 448 pages
File Size : 42,91 MB
Release : 2000-08-03
Category : Science
ISBN : 9780521773164

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The animal communities in plant-held water bodies, such as tree holes and pitcher plants, are models for food web studies. In this book, Professor Kitching introduces us to these fascinating miniature worlds and demonstrates how they can be used to tackle some of the major questions in community ecology. Based on his thirty years of research around the world, he presents much previously unpublished information, as well as summarizing over a hundred years of natural history observations made by others. The book covers many aspects of the theory of food web formation and maintenance presented with field-collected information on tree holes, bromeliads, pitcher plants, bamboo containers, and the axils of fleshy plants.