Download or read book Powerful Reforms with Shallow Roots written by Larry Cuban and published by Teachers College Press. This book was released on 2014-04-15 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: Drastic reform measures are being implemented in growing numbers of urban communities as the public’s patience has finally run out with perpetually nonperforming public schools. This authoritative and eye-opening volume examines governance changes in six cities during the 1990s, where either mayoral control of schools has occurred or where noneducators have been appointed to lead school districts. Featuring up-close, in-depth case studies of Philadelphia, Baltimore, Chicago, Boston, San Diego, and Seattle, this book explores the reasons why these cities chose to alter their traditional school governance structures and analyzes what happened when the reforms were implemented and whether or not teachers and students performed better because of them. “Provides useful perspectives on the complexities of educational change that is relevant to all kinds of school systems . . . of interest to elected officials, other policymakers, business leaders, and educators.” —Richard W. Riley, Former U.S. Secretary of Education “A ‘must-read’ for policymakers intent on improving the academic performance of children in America’s urban centers . . . offers important insight and an excellent overview of the reforms being tested in the six urban centers.” —Ted Sanders, President, Education Commission of the States “Every urban political official, indeed, every governor, business leader, and state legislator should study the urban school reforms described in this book” —James B. Hunt, Jr., Former Governor of North Carolina and Chairman, James B. Hunt Jr. Institute for Educational Leadership and Policy “A ‘must-read’ for educators. This book clearly defines what it takes to make significant changes in urban districts” —Floretta McKenzie, Former Superintendent, District of Columbia Public Schools
Download or read book Ecophysiology of root systems environment interaction written by Boris Rewald and published by Frontiers E-books. This book was released on 2014-09-03 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is a scarcity of detailed information regarding the ecophysiology of root systems and the way root system functioning is affected by both internal and external factors. Furthermore, global climate change is expected to increase the intensity of climate extremes, such as severe drought, heat waves and periods of heavy rainfall; in addition other stresses such as salinization of soils are increasing world-wide. Recently an increasing awareness has developed that understanding plant traits will play a major role in breeding of future crop plants. For example, there is increasing evidence that the traits of root systems are defined by the properties of individual roots. However, further knowledge on the functional importance of root segments and the molecular/physiological mechanisms underlying root system functioning and persistence is needed, and would specifically allow modifying (crop) root system functionality and efficiency in the future. Another major gap in knowledge is localized at the root-soil interface and in regard to the potential adaptive plasticity of root-rhizosphere interactions under abiotic stress and/or competition. It is currently unknown whether adaptations in microbe communities occur, for example due to modified exudation rates, and what are the subsequent influences on nutrient mobilization and uptake. Furthermore, uncovering the mechanisms by which roots perceive neighboring roots may not only contribute to our understanding of plant developmental strategies, but also has important implications on the study of competitive interactions in natural communities, and in optimizing plant performance and resource use in agricultural and silvicultural systems. In this Research Topic, we aimed to provide an on-line, open-access snapshot of the current state of the art of the field of root ecology and physiology, with special focus on the translation of root structure to function, and how root systems are influenced by interplay with internal and external factors such as abiotic stress, microbes and plant-plant interaction. We welcomed original research papers, but reviews of specific topics, articles formulating opinions or describing cutting-edge methods were also gladly accepted.
Download or read book Wetland Indicators written by Ralph W. Tiner and published by CRC Press. This book was released on 1999-04-21 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understand the current concept of wetland and methods for identifying, describing, classifying, and delineating wetlands in the United States with Wetland Indicators - capturing the current state of science's role in wetland recognition and mapping. Environmental scientists and others involved with wetland regulations can strengthen their knowledge about wetlands, and the use of various indicators, to support their decisions on difficult wetland determinations. Professor Tiner primarily focuses on plants, soils, and other signs of wetland hydrology in the soil, or on the surface of wetlands in his discussion of Wetland Indicators. Practicing - and aspiring - wetland delineators alike will appreciate Wetland Indicators' critical insight into the development and significance of hydrophytic vegetation, hydric soils, and other factors. Features Shows 55 color plates, documenting wetland indicators throughout the nation - with more than 34 soil plates and aerial photos Illustrates other wetland properties with more than 50 figures Provides over 60 tables, including extensive tables of U.S. wetland plant communities and examples for determining hydrophytic vegetation Contents Wetland Definitions Wetland Concepts for Identification and Delineation Plant Indicators of Wetlands and Their Characteristics Vegetation Sampling and Analysis for Wetlands Soil Indicators of Wetlands Wetland Identification and Boundary Delineation Methods Problem Wetlands and Field Situations for Delineation Wetland Classification Wetlands of the United States: An Introduction, With Emphasis on Their Plant Communities Wetland Mapping and Photointerpretation
Download or read book Understanding Roots written by Robert Kourik and published by . This book was released on 2015-08-24 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding Roots uncovers one of the greatest mysteries underground—the secret lives and magical workings of the roots that move and grow invisibly beneath our feet. Roots, it seems, do more than just keep a plant from falling over: they gather water and nutrients, exude wondrous elixirs to create good soil, make friends with microbes and fungi, communicate with other roots, and adapt themselves to all manner of soils, winds, and climates, nourishing and sustaining our gardens, lawns, and woodlands. Understanding Roots contains over 115 enchanting and revealing root drawings that most people have never seen, from prairies, grasslands, and deserts, as well as drawings based on excavations of vegetable, fruit, nut, and ornamental tree roots. Every root system presented in this book was drawn by people literally working in the trenches, sketching the roots where they grew. The text provides a verydetailed review of all aspects of transplanting; describes how roots work their magic to improve soil nutrients; investigates the hidden life of soil microbes and their mysterious relationship to roots; explores the question of whether deep roots really gather more unique nutrients than shallow roots; shares the latest research about the mysteries of mycorrhizal (good fungal) association; shows you exactly where to put your fertilizer, compost, water, and mulch to help plants flourish; tells you why gray water increases crop yields more than fresh water; and, most importantly, reveals the science behind all the above (with citations for each scientific paper). This book contains at least eighty percent more new information, more results of the latest in-depth and up-to-date explorations, and even more helpful guidelines on roots than the author’s previous book (Roots Demystified: Change Your Garden Habits to Help Roots Thrive). This is not a revised edition—it’s a whole new stand-alone book.
Download or read book Taylor s Master Guide to Gardening written by Roger Holmes and published by Houghton Mifflin Harcourt. This book was released on 2001-10-18 with total page 663 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides information on growing trees, perennials, annuals, grasses, herbs, and bulbs, features the basics of garden design, and talks about environmentally sound controls of pests and diseases.
Download or read book Plant Roots written by Amram Eshel and published by CRC Press. This book was released on 2013-04-17 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 Root
Download or read book Only in Africa written by Norman Owen-Smith and published by Cambridge University Press. This book was released on 2021-10-07 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: Demonstrates how Africa's physical features, savannas and abundant grazers enabled frugivorous apes to become savanna-living hunters.
Download or read book U S Geological Survey Bulletin written by and published by . This book was released on 1983 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Geological Survey Bulletin written by L. E. Burns and published by . This book was released on 1983 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Perspectives in Biophysical Plant Ecophysiology written by William Kirby Smith and published by UNAM. This book was released on 2009 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: Park S. Nobel pioneered the coupling of cellular physical chemistry with plant physiology, providing a sound physicochemical interpretation of the laws of diffusion to a rapidly expanding field of plant physiological ecology. His classical textbook is the only one of its kind to provide an extensive array of quantitative problems and solutions in the field of plant biophysics and ecophysiology, extending from the molecular to the ecological level. In this festschrift, former graduate students and postdocs, as well as colleagues of Prof. Nobel present a series of reviews that include scales from sub-cellular to global, and topics that range from desert succulent biology to the physiology of alpine plants, encompassing basic research and applications in agronomy and conservation biology. This state-of-the-field survey provides current and useful information for professionals and graduate students, while illustrating the broad span of the influence that Nobel's career has had on modern ecophysiology.
Download or read book Planet Geography written by Stephen Codrington and published by Solid Star Press. This book was released on 2005 with total page 781 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Geography for students of the International Baccalaureate Diploma, New South Wales Higher School Certificate, and other senior secondary geography courses with a contemporary global focus" -- back cover.
Download or read book Annual Report of the Agricultural Experiment Station of the University of Wisconsin for the Year written by University of Wisconsin. Agricultural Experiment Station and published by . This book was released on 1897 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Woody Plants in Agro Ecosystems of Semi Arid Regions written by Henk Breman and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 353 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a quantitative analysis of the role of woody plants in semi-arid regions, for the aSSessment of their benefits in agrosylvopastoralland-use systems with productive and sus tainability objectives. The insights presented and conclusions drawn allow the additional benefits of woody plants for specific climatic and physical site conditions and land-use systems to be estimated. The Sahel and Sudan zones in West Africa, on which the book focusses, represent resource-poor conditions, whose ecological dynamics have been relatively well studied. The role of woody plants in this region, as assessed in this book, is extrapolated to other semi-arid regions, leading to general conclusions on agroforestry's potential as an option for sustainable land use in semi-arid regions. The origins of this book go back to 1982, when the Club du Sahel requested that available data on woody plants in the Sahel region be synthesised, to provide basic information to enable better attention to be given to woody plants in rural development programmes. We are grateful to the Club du Sahel for this challenge. Various people contributed to studies used in this book. The preliminary inventory of the data available was made by Frits Ohler; later his work was continued by Franciska Dekker.
Download or read book Ecology and Biogeography of Mediterranean Ecosystems in Chile California and Australia written by Mary T. Kalin Arroyo and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mediterranean-type ecosystems have provided ecologists with some of the most scientifically-rewarding opportunities to formulate and evaluate hypotheses about large and small-scale ecological phenomena. Comparison of mediterranean-type climate ecosystems in different parts of the world has not only permitted a strong test for ecological convergence, but also critical understanding of key ecophysiological and population processes.
Download or read book The survival of an organization Technology Cyber written by Jeffrey Lush and published by Lulu.com. This book was released on 2019-01-17 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the technology in your environment is critical for profitability, expansion, security, and cost avoidance. You do not have to be a technologist when equipped with this Survival Guide. Making Complex Easy has been a finely tuned skill for our author over three decades. The book includes Quick Reference Tables, Multiple Images, and URLs to help videos.
Download or read book Cotton Stainers and Certain Other Sap feeding Insects of the Cotton Plant written by Edward Philpott Mumford and published by . This book was released on 1926 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Shipley Collection of Scientific Papers written by and published by . This book was released on 1926 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
