Food Webs Guided Reading 6-Pack PDF Download

Author:
Publisher: Teacher Created Materials
ISBN: 0743969014
Category : Juvenile Nonfiction
Languages : en
Pages : 34

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Author: Ken Meter
Publisher: Island Press
ISBN: 1642831476
Category : Social Science
Languages : en
Pages : 306

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Book Description
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: Gary A. Polis
Publisher: Springer Science & Business Media
ISBN: 1461570077
Category : Science
Languages : en
Pages : 475

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Book Description
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: Susan H. Gray
Publisher: Capstone
ISBN: 0756532612
Category : Food chains (Ecology)
Languages : en
Pages : 26

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Book Description
An introduction to the system known as the food web, which connects all living things.

Author: Kevin S. McCann
Publisher: Princeton University Press
ISBN: 0691134189
Category : Science
Languages : en
Pages : 255

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

Author: S. Pimm
Publisher: Springer Science & Business Media
ISBN: 9400959257
Category : Science
Languages : en
Pages : 231

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Book Description
Often the meanings of words are changed subtly for interesting reasons. The implication of the word 'community' has changed from including all the organisms in an area to only those species at a particular trophic level (and often a taxonomically restricted group), for example, 'bird-community'. If this observation is correct, its probable cause is the dramatic growth in our knowledge of the ecological patterns along trophic levels (I call these horizontal patterns) and the processes that generate them. This book deals with vertical patterns - those across trophic levels -and tries to compensate for their relative neglect. In cataloging a dozen vertical patterns I hope to convince the reader that species interactions across trophic levels are as patterned as those along trophic levels and demand explanations equally forcefully. But this is not the only objective. A limited number of processes shape the patterns of species interaction; to demonstrate their existence is an essential step in understanding why ecosystems are the way they are. To achieve these aims I must resort to both mathematical techniques to develop theories and statistical techniques to decide between rival hypotheses. The level of mathematics is likely to offend nearly everyone. Some will find any mathematics too much, while others will consider the material to be old, familiar ground and probably explained with a poor regard for rigour and generality.

Author: Gary A. Polis
Publisher: University of Chicago Press
ISBN: 0226673278
Category : Science
Languages : en
Pages : 566

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Book Description
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: Patricia Lauber
Publisher: Collins
ISBN: 9780064451307
Category : Juvenile Nonfiction
Languages : en
Pages : 36

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Book Description
An award-winning author and artist explain how every link in a food chain is important because each living thing depends on others for survival. "Clear, simple drawings illustrate the clear, simple text. Informative and intriguing, this basic science book leads children to think about the complex and interdependent web of life on Earth."'BL. Outstanding Science Trade Books for Children 1996 (NSTA/CBC)

Author: Joel E. Cohen
Publisher: Princeton University Press
ISBN: 9780691082028
Category : Science
Languages : en
Pages : 212

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Book Description
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: William Anthony
Publisher: Greenhaven Publishing LLC
ISBN: 1534535284
Category : Juvenile Nonfiction
Languages : en
Pages : 26

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Book Description
The ocean is full of complex food webs made up of many different animals fighting to stay alive within this massive ecosystem. Carnivores, herbivores, and other classified creatures are introduced within the accessible and age-appropriate narrative, which is presented in a conversational tone and creative way. Popular creatures are categorized separately and given detailed descriptions, which allows readers to expand their knowledge of each animal. Helpful graphic organizers provide additional information. Full-color photographs make this an exciting learning experience for all those interested in expanding their knowledge of the science and webs of marine life.