The Ecological Relations of Roots PDF Download
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Author: John Ernest Weaver
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 224
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Book Description
Author: John Ernest Weaver
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 224
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Book Description
Author: Hans de Kroon
Publisher: Springer Science & Business Media
ISBN: 9783540001850
Category : Science
Languages : en
Pages : 424
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Book Description
In the course of evolution, a great variety of root systems have learned to overcome the many physical, biochemical and biological problems brought about by soil. This development has made them a fascinating object of scientific study. This volume gives an overview of how roots have adapted to the soil environment and which roles they play in the soil ecosystem. The text describes the form and function of roots, their temporal and spatial distribution, and their turnover rate in various ecosystems. Subsequently, a physiological background is provided for basic functions, such as carbon acquisition, water and solute movement, and for their responses to three major abiotic stresses, i.e. hard soil structure, drought and flooding. The volume concludes with the interactions of roots with other organisms of the complex soil ecosystem, including symbiosis, competition, and the function of roots as a food source.
Author: John Ernest Weaver
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Amram Eshel
Publisher: CRC Press
ISBN: 1439846480
Category : Science
Languages : en
Pages : 861
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Book Description
The decade since the publication of the third edition of this volume has been an era of great progress in biology in general and the plant sciences in particular. This is especially true with the advancements brought on by the sequencing of whole genomes of model organisms and the development of "omics" techniques. This fourth edition of Plant Roots: The Hidden Half reflects these developments that have transformed not only the field of biology, but also the many facets of root science. Highlights of this new edition include: The basics of root research and their evolution and role in the global context of soil development and atmosphere composition New understandings about roots gained in the post-genomic era, for example, how the development of roots became possible, and the genetic basis required for this to occur The mechanisms that determine root structure, with chapters on cellular patterning, lateral root and vascular development, the molecular basis of adventitious roots, and other topics Plant hormone action and signaling pathways that control root development, including new chapters on strigolactones and brassinosteroids Soil resource acquisition from agricultural and ecological perspectives Root response to stress, with chapters that address the impact of the genomic revolution on this topic Root-rhizosphere interactions, from beneficial microorganisms to detrimental nematodes Modern research techniques for the field and the lab Each chapter not only presents a clear summation of the topic under discussion, but also includes a vision of what is to be expected in the years to come. The wide coverage of themes in this volume continues the tradition that makes this work recognized as a fundamental source of information for root scientists at all levels.
Author: O.L. Lange
Publisher: Springer Science & Business Media
ISBN: 3642664296
Category : Science
Languages : en
Pages : 554
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Book Description
Author: Shannon Elizabeth Bell
Publisher: University of Illinois Press
ISBN: 0252095219
Category : Nature
Languages : en
Pages : 225
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Book Description
Motivated by a deeply rooted sense of place and community, Appalachian women have long fought against the damaging effects of industrialization. In this collection of interviews, sociologist Shannon Elizabeth Bell presents the voices of twelve Central Appalachian women, environmental justice activists fighting against mountaintop removal mining and its devastating effects on public health, regional ecology, and community well-being. Each woman narrates her own personal story of injustice and tells how that experience led her to activism. The interviews--many of them illustrated by the women's "photostories"--describe obstacles, losses, and tragedies. But they also tell of new communities and personal transformations catalyzed through activism. Bell supplements each narrative with careful notes that aid the reader while amplifying the power and flow of the activists' stories. Bell's analysis outlines the relationship between Appalachian women's activism and the gendered responsibilities they feel within their families and communities. Ultimately, Bell argues that these women draw upon a broader "protector identity" that both encompasses and extends the identity of motherhood that has often been associated with grassroots women's activism. As protectors, the women challenge dominant Appalachian gender expectations and guard not only their families but also their homeplaces, their communities, their heritage, and the endangered mountains that surround them. 30% of the proceeds from the sale of this book will be donated to organizations fighting for environmental justice in Central Appalachia.
Author: Henry Chandler Cowles
Publisher: Franklin Classics
ISBN: 9780342320615
Category :
Languages : en
Pages : 122
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Book Description
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author: John E. Weaver
Publisher:
ISBN:
Category : Crops and climate
Languages : en
Pages : 168
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Book Description
Author: M.B. Kirkham
Publisher: Academic Press
ISBN: 0124200788
Category : Science
Languages : en
Pages : 599
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Book Description
Principles of Soil and Plant Water Relations, 2e describes the principles of water relations within soils, followed by the uptake of water and its subsequent movement throughout and from the plant body. This is presented as a progressive series of physical and biological interrelations, even though each topic is treated in detail on its own. The book also describes equipment used to measure water in the soil-plant-atmosphere system. At the end of each chapter is a biography of a scientist whose principles are discussed in the chapter. In addition to new information on the concept of celestial time, this new edition also includes new chapters on methods to determine sap flow in plants dual-probe heat-pulse technique to monitor water in the root zone. - Provides the necessary understanding to address advancing problems in water availability for meeting ecological requirements at local, regional and global scales - Covers plant anatomy: an essential component to understanding soil and plant water relations
Author: Megan Raby
Publisher: UNC Press Books
ISBN: 1469635615
Category : Nature
Languages : en
Pages : 337
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Book Description
Biodiversity has been a key concept in international conservation since the 1980s, yet historians have paid little attention to its origins. Uncovering its roots in tropical fieldwork and the southward expansion of U.S. empire at the turn of the twentieth century, Megan Raby details how ecologists took advantage of growing U.S. landholdings in the circum-Caribbean by establishing permanent field stations for long-term, basic tropical research. From these outposts of U.S. science, a growing community of American "tropical biologists" developed both the key scientific concepts and the values embedded in the modern discourse of biodiversity. Considering U.S. biological fieldwork from the era of the Spanish-American War through the anticolonial movements of the 1960s and 1970s, this study combines the history of science, environmental history, and the history of U.S.–Caribbean and Latin American relations. In doing so, Raby sheds new light on the origins of contemporary scientific and environmentalist thought and brings to the forefront a surprisingly neglected history of twentieth-century U.S. science and empire.
