Download or read book Ecology of Leaf Longevity written by Kihachiro Kikuzawa and published by Springer Science & Business Media. This book was released on 2011-06-21 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: Leaf longevity is a fundamental process underlying patterns of variation in foliar phenology and determining the distinction between deciduous and evergreen plant species. Variation in leaf longevity is associated with a wide array of differences in the physiology, anatomy, morphology and ecology of plants. This book brings together for the first time information scattered widely in the botanical literature to provide a clear and comprehensive introduction to the nature and significance of variation in leaf longevity. It traces the development of ideas about leaf longevity from the earliest descriptive studies to contemporary theory of leaf longevity as a key element in the function of leaves as photosynthetic organs. An understanding of variation in leaf longevity reveals much about the nature of adaptation at the whole plant level and provides fundamental insights into the basis of variation in plant productivity at the ecosystem level. The analysis of leaf longevity also provides a process-based perspective on phenological shifts associated with the changing climate. Readers will find this an informative synthesis summarizing and illustrating different views in a readily accessible narrative that draws attention to a central but too often unappreciated aspect of plant biology. The nature and causes of seasonal patterns in the birth and death of individual plant leaves are essential to the understanding of the health of plant communities, biomes, and consequently our planet.
Download or read book Leaf Longevity written by Kihachiro Kikuzawa and published by . This book was released on 2009-09-01 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Leaf A Platform for Performing Photosynthesis written by William W. Adams III and published by Springer. This book was released on 2018-10-24 with total page 575 pages. Available in PDF, EPUB and Kindle. Book excerpt: The leaf is an organ optimized for capturing sunlight and safely using that energy through the process of photosynthesis to drive the productivity of the plant and, through the position of plants as primary producers, that of Earth’s biosphere. It is an exquisite organ composed of multiple tissues, each with unique functions, working synergistically to: (1) deliver water, nutrients, signals, and sometimes energy-rich carbon compounds throughout the leaf (xylem); (2) deliver energy-rich carbon molecules and signals within the leaf during its development and then from the leaf to the plant once the leaf has matured (phloem); (3) regulate exchange of gasses between the leaf and the atmosphere (epidermis and stomata); (4) modulate the radiation that penetrates into the leaf tissues (trichomes, the cuticle, and its underlying epidermis); (5) harvest the energy of visible sunlight to transform water and carbon dioxide into energy-rich sugars or sugar alcohols for export to the rest of the plant (palisade and spongy mesophyll); and (6) store sugars and/or starch during the day to feed the plant during the night and/or acids during the night to support light-driven photosynthesis during the day (palisade and spongy mesophyll). Various regulatory controls that have been shaped through the evolutionary history of each plant species result in an incredible diversity of leaf form across the plant kingdom. Genetic programming is also flexible in allowing acclimatory phenotypic adjustments that optimize leaf functioning in response to a particular set of environmental conditions and biotic influences experienced by the plant. Moreover, leaves and the primary processes carried out by the leaf respond to changes in their environment, and the status of the plant, through multiple regulatory networks over time scales ranging from seconds to seasons. This book brings together the findings from laboratories at the forefront of research into various aspects of leaf function, with particular emphasis on the relationship to photosynthesis.
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 861 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 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.
Download or read book Resource Strategies of Wild Plants written by Joseph M. Craine and published by Princeton University Press. This book was released on 2009-04-27 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over millions of years, terrestrial plants have competed for limited resources, defended themselves against herbivores, and resisted a myriad of environmental stresses. These struggles have helped generate more than a quarter million terrestrial plant species, each possessing a unique strategy for success. Yet, as Resource Strategies of Wild Plants demonstrates, the constraints on plant growth are universal enough that a few survival strategies hold true for all seed-producing plants. This book describes the five major strategies of growth for terrestrial plants, details how plants succeed when resources are scarce, delves into the history of research into plant strategies, and resets the foundational understanding of ecological processes. Drawing from recent findings in plant-herbivore interactions, ecosystem ecology, and evolutionary ecology, Joseph Craine explains how plants attain available nutrients, withstand the immense stresses of drying soils, and flourish in the race for light. He shows that the competition for resources has shaped plant evolution in newly discovered ways, while the scarcity of such resources has affected how plants interact with herbivores, wind, fire, and frost. An understanding of the major resource strategies of wild plants remains central to learning about the ecology of plant communities, global changes in the biosphere, methods for species conservation, and the evolution of life on earth.
Download or read book Tropical Forest Plant Ecophysiology written by Stephen S. Mulkey and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 687 pages. Available in PDF, EPUB and Kindle. Book excerpt: Taking readers out of the laboratory and into the humid tropical forests, this comprehensive volume explores the most recent advances occurring in tropical plant ecophysiology. Drawing on the knowledge of leading practitioners in the field, this book synthesizes a broad range of information on the ways in which tropical plants adapt to their environment and demonstrate unique physiological processes. This book is arranged into four sections which cover resource acquisition, species interactions, ecophysiological patterns within and among tropical forest communities, and the ecophysiology of forest regeneration. These sections describe plant function in relation to ecology across a wide spectrum of tropical forest species and growth forms. How do different species harvest and utilize resources from heterogeneous tropical environments? How do patterns of functional diversity reflect the overwhelming taxonomic and morphological diversity of tropical forest plants? Such fundamental questions are examined in rich detail. To illuminate the discussions further, every chapter in this book features an agenda for future research, extensive cross referencing, timely references, and the integration of ecophysiology and the demography of tropical species where the data exist. Tropical Forest Plant Ecophysiology provides plant scientists, botanists, researchers, and graduate students with important insights into the behavior of tropical plants. Biologists and foresters interested in tropical ecology and plant physiological ecologists will also benefit from this authoritative and timely resource.
Download or read book Alpine Plant Life written by Christian Körner and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: Generations of plant scientists have been fascinated by alpine plant lifean ecosystem that experiences dramatic climatic gradients over a very short distance. This comprehensive book examines a wide range of topics including alpine climate and soils, plant distribution and the treeline phenomenon, plant stress and development, global change at high elevation, and the human impact on alpine vegetation. Geographically, the book covers all parts of the world including the tropics.
Download or read book Leaf Longevity in Evergreen Species at the Arnold Arboretum written by Sarah Pardo and published by . This book was released on 2018-06-29 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Leaf Longevity in Evergreen Species at the Arnold Arboretum
Download or read book Leaf Optical Properties written by Stéphane Jacquemoud and published by Cambridge University Press. This book was released on 2019-09-05 with total page 571 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents state-of-the-art research into leaf interactions with light, for scientists working in remote sensing, plant physiology, ecology and resource management.
Download or read book Plant Physiological Ecology written by Hans Lambers and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 565 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook is remarkable for emphasising that the mechanisms underlying plant physiological ecology can be found at the levels of biochemistry, biophysics, molecular biology and whole-plant physiology. The authors begin with the primary processes of carbon metabolism and transport, plant-water relations, and energy balance. After considering individual leaves and whole plants, these physiological processes are then scaled up to the level of the canopy. Subsequent chapters discuss mineral nutrition and the ways in which plants cope with nutrient-deficient or toxic soils. The book then looks at patterns of growth and allocation, life-history traits, and interactions between plants and other organisms. Later chapters deal with traits that affect decomposition of plant material and with plant physiological ecology at the level of ecosystems and global environmental processes.
Download or read book Plant Roots written by Yoav Waisel and published by CRC Press. This book was released on 2002-03-29 with total page 1749 pages. Available in PDF, EPUB and Kindle. Book excerpt: The third edition of a standard resource, this book offers a state-of-the-art, multi-disciplinary presentation of plant roots. It examines structure and development, assemblage of root systems, metabolism and growth, stressful environments, and interactions at the rhizosphere. Reflecting the explosion of advances and emerging technologies in the field, the book presents developments in the study of root origin, composition, formation, and behavior for the production of novel pharmaceutical and medicinal compounds, agrochemicals, dyes, flavors, and pesticides. It details breakthroughs in genetics, molecular biology, growth substance physiology, biotechnology, and biomechanics.
Download or read book Mediterranean Type Ecosystems written by F.J. Kruger and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt: The theory of ecological convergence underlies the biogeographers' maps of world biome-types. It also determines the degree to which ecological principles, derived from research on particular populations, communities or ecosystems, are generally valid, and hence also to what extent resource management principles are general. To quote Di Castri and Mooney (1973): "In effect, in order to assess the transfer of technology, it is essential to know to what extent information acquired from studying one particular ecosystem is applicable to another ecosystem of the same type but situated in a different location. " The five relatively small, isolated, mediterranean-climate zones of the earth, each with its distinct fauna and flora, have provided the ideal testing grounds for this theory. A heritage of precisely focused ecosystems research has resulted, beginning with the international comparative analyses conducted by Specht (l969a, b) but with antecedents in earlier studies in South Australia (Specht and Rayson 1957, Specht 1973). Cody and Mooney (1978) reviewed the information available at the time for the four zones excepting Australia and concluded that the arrays of strategy-types to be found among the different biotas were so similar that they could be explained only in terms of the convergence hypothesis; nevertheless, evident differences in community organization and dynamics, especially phenol ogy, required closer study of resource availability and resource-use patterns to better explain relations between form and function overall, and to assess the degree of convergence at higher levels of organization than the population.
Download or read book On the Contribution of Leaf Surface Wetness Leaf Size and Leaf Longevity to Variation in Leaf Water and Carbon Balance written by Kevin Allen Simonin and published by . This book was released on 2009 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is widely recognized that many aspects of plant form and function are coupled to variation in water availability. This is because plant persistence is ultimately dependent upon the process of carbon fixation and it is physically impossible for a plant to transport CO2 to the sites of photosynthetic metabolism inside the leaf without, at the same time, loosing water to the surrounding atmosphere. How the efficiency of water use changes as leaves differ in size and longevity, and where leaves acquire their water from, are often times not well defined. In general, the water lost to the atmosphere by leaves is thought to originate from the soil via uptake by roots. However, previous research has shown that water deposited on leaf surfaces is often available for use via direct foliar uptake. Using field observations and a greenhouse experiment I show that leaf water interception can represent an overlooked water source for leaves that temporarily, but significantly, decouples leaf-level water and carbon relations from variation in soil water availability (Chapter 1). Additionally, within a particular environment water loss per unit leaf area is expected to increase with leaf size. Recent research suggests the construction cost of a leaf also increases with size and/or longevity. If leaves have maximized the ability to transport water to surfaces for energy and gas exchange in order to maximize CO2 uptake from the atmosphere, then vascular network efficiency (Leaf hydraulic conductance) should be size invariant. Using a survey of 60 angiosperm species I show that leaf hydraulic conductance is maximized for a given surface area (Chapter 2). By extension, if the lifetime return (carbon gain) on dry-mass invested in leaf area (construction cost plus maintenance respiration per unit leaf area) is maximized, then leaf hydraulic conductance per unit leaf dry mass should scale isometrically with leaf lifespan. Using plants from a common garden and previously published values of leaf lifespan and leaf hydraulic conductance for species inhabiting a broad range of vegetation types and climate, I explored the relationship between leaf longevity and leaf hydraulic conductance per unit leaf mass. I observed a negative correlation between leaf hydraulic conductance per unit leaf mass and leaf lifespan. Further, the slope of the relationship describing the covariation between leaf hydraulic conductance per unit mass and leaf lifespan is not significantly different from one. Isometric scaling (slope = 1) provides strong support for a constant net carbon gain per leaf despite significant variation in leaf size, longevity and environment. Therefore, variation in gross primary productivity is a function of the number of leaves a plant maintains over a given unit of time (Chapter 3).
Download or read book The Longevity Paradox written by Dr. Steven R. Gundry, MD and published by HarperCollins. This book was released on 2019-03-19 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the author of the New York Times bestseller The Plant Paradox comes a groundbreaking plan for living a long, healthy, happy life. From the moment we are born, our cells begin to age. But aging does not have to mean decline. World-renowned surgeon Dr. Steven Gundry has been treating mature patients for most of his career. He knows that everyone thinks they want to live forever, until they hit middle age and witness the suffering of their parents and even their peers. So how do we solve the paradox of wanting to live to a ripe old age—but enjoy the benefits of youth? This groundbreaking book holds the answer. Working with thousands of patients, Dr. Gundry has discovered that the “diseases of aging” we most fear are not simply a function of age; rather, they are a byproduct of the way we have lived over the decades. In The Longevity Paradox, he maps out a new approach to aging well—one that is based on supporting the health of the “oldest” parts of us: the microorganisms that live within our bodies. Our gut bugs—the bacteria that make up the microbiome—largely determine our health over the years. From diseases like cancer and Alzheimer’s to common ailments like arthritis to our weight and the appearance of our skin, these bugs are in the driver’s seat, controlling our quality of life as we age. The good news is, it’s never too late to support these microbes and give them what they need to help them—and you—thrive. In The Longevity Paradox, Dr. Gundry outlines a nutrition and lifestyle plan to support gut health and live well for decades to come. A progressive take on the new science of aging, The Longevity Paradox offers an action plan to prevent and reverse disease as well as simple hacks to help anyone look and feel younger and more vital.
Download or read book Principles of Terrestrial Ecosystem Ecology written by Francis Stuart Chapin (III) and published by Springer Science & Business Media. This book was released on 2002-08-12 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: Features review questions at the end of each chapter; Includes suggestions for recommended reading; Provides a glossary of ecological terms; Has a wide audience as a textbook for advanced undergraduate students, graduate students and as a reference for practicing scientists from a wide array of disciplines
Download or read book Shedding of Plants Parts written by T.T. Kozlowski and published by Elsevier. This book was released on 2012-12-02 with total page 573 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shedding of Plant Parts focuses on the anatomical, physiological, and ecological features of shedding of vegetative and reproductive parts of plants. This book encompasses both natural and induced shedding. Organized into 12 chapters, this book first outlines the extent of shedding of plant cells, tissues, and organs and summarizes the biological and economic implications of such shedding. Separate chapters follow that discuss anatomical and histochemical changes in leaf abscission; the physiological ecology and internal regulation of abscission; and the shedding of shoots, branches, bark, roots, pollen, seeds, and reproductive structures of forest trees. This book also explains the anatomical changes in abscission of reproductive structures, chemical thinning of flowers and fruits, and chemical control of fruit abscission. This book will be valuable to plant anatomists, pathologists, and physiologists, and to agronomists, arborists, biochemists, ecologists, entomologists, foresters, horticulturists, landscape architects, meteorologists, and soil scientists.
Download or read book Global Change and Terrestrial Ecosystems in Monsoon Asia written by T. Hirose and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forest vegetation is distributed in monsoon Asia continuously from boreal forests through temperate to tropical rain forests. This vegetation - the richest in the world - is being subjected to global change on an unprecedented scale. It has been predicted that boreal forests will experience the most significant change in response to global warming, while tropical forests are endangered by rapid changes in land use due to high population pressure. An increase in atmospheric CO2 concentration will severely affect ecosystem function in this area. This volume presents a review of terrestrial ecosystems in monsoon Asia and assesses possible effects of global change on the structure and function of forest ecosystems and feedback routes to the global carbon cycle. Audience: Vital reading for plant ecologists, vegetation scientists, environmental managers and government decision makers.
