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 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 Plant Cell Death Processes written by Larry D. Nooden and published by Elsevier. This book was released on 2003-12-09 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: Programmed cell death is a common pattern of growth and development in both animals and plants. However, programmed cell death and related processes are not as generally recognized as central to plant growth. This is changing fast and is becoming more of a focus of intensive research. This edited work will bring under one cover recent reviews of programmed cell death, apoptosis and senescence. Summaries of the myriad aspects of cell death in plants Discussion of the broadest implications of these disparite results A unification of fields where there has been no cross talk Enables easy entry into diverse but related lines of research
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 Plant Physiological Ecology written by Hans Lambers and published by Springer Science & Business Media. This book was released on 2008-10-08 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: Box 9E. 1 Continued FIGURE 2. The C–S–R triangle model (Grime 1979). The strategies at the three corners are C, competiti- winning species; S, stress-tolerating s- cies; R,ruderalspecies. Particular species can engage in any mixture of these three primary strategies, and the m- ture is described by their position within the triangle. comment briefly on some other dimensions that Grime’s (1977) triangle (Fig. 2) (see also Sects. 6. 1 are not yet so well understood. and 6. 3 of Chapter 7 on growth and allocation) is a two-dimensional scheme. A C—S axis (Com- tition-winning species to Stress-tolerating spe- Leaf Economics Spectrum cies) reflects adaptation to favorable vs. unfavorable sites for plant growth, and an R- Five traits that are coordinated across species are axis (Ruderal species) reflects adaptation to leaf mass per area (LMA), leaf life-span, leaf N disturbance. concentration, and potential photosynthesis and dark respiration on a mass basis. In the five-trait Trait-Dimensions space,79%ofallvariation worldwideliesalonga single main axis (Fig. 33 of Chapter 2A on photo- A recent trend in plant strategy thinking has synthesis; Wright et al. 2004). Species with low been trait-dimensions, that is, spectra of varia- LMA tend to have short leaf life-spans, high leaf tion with respect to measurable traits. Compared nutrient concentrations, and high potential rates of mass-based photosynthesis. These species with category schemes, such as Raunkiaer’s, trait occur at the ‘‘quick-return’’ end of the leaf e- dimensions have the merit of capturing cont- nomics spectrum.
Download or read book Principles of Terrestrial Ecosystem Ecology written by F Stuart Chapin III and published by Springer Science & Business Media. This book was released on 2006-04-10 with total page 449 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 Grasses and Grassland Ecology written by David J. Gibson and published by Oxford University Press. This book was released on 2009 with total page 323 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the most up to date and thorough account of the natural history of the plants that comprise the most important food crop on Earth, the grasses and grasslands.
Download or read book Plant Physiological Ecology written by H. Lambers and published by Springer Science & Business Media. This book was released on 1998 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: The growth, reproduction and geographical distribution of plants are profoundly influenced by their physiological ecology: the interaction with the surrounding physical, chemical and biological environments. This textbook is notable in emphasizing that the mechanisms underlying plant physiological ecology can be found at the levels of biochemistry, biophysics, molecular biology and whole-plant physiology. At the same time, the integrative power of physiological ecology is well-suited to assess the costs, benefits and consequences of modifying plants for human needs, and to evaluate the role of plants in ecosystems.Plant Physiological Ecology begins 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.Plant Physiological Ecology features numerous boxed entries that provide extended discussions of selected issues, a glossary, and numerous references to the primary and review literature. The significant new text is suitable for use in plant ecology courses, as well as classes ranging from plant physiology to plant molecular biology.
Download or read book Applications of Physiological Ecology to Forest Management written by J. J. Landsberg and published by Elsevier. This book was released on 1997-01-08 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forest management is a complex process that now incorporates information obtained from many sources. It is increasingly obvious that the physiological status of the trees in a forest has a dramatic impact on the likely success of any particular management strategy. Indeed, models described in this book that deal with forest productivity and sustainability require physiological information. This information can only be obtained from an understanding of the basic biological mechanisms and processes that contribute to individual tree growth. This valuable book illustrates that physiological ecology is a fundamental element of proficient forest management. Provides essential information relevant to the continuing debate over sustainable forest management Outlines how modern tools for physiological ecology can be used in planning and managing forest ecosystems Reviews the most commonly used forest models and assesses their value and future
Download or read book Advances in Ecological Research written by and published by Academic Press. This book was released on 1999-12-10 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt: The six reviews in this latest issue of Advances in Ecological Research cover a broad spectrum of ecology, from micro-patterns and processes, to the ecophysiology of the individual organism, to forest-scale processes. Topics covered include the possible evolutionary forces that have shaped particular strategies, and the potential and limitations for techniques in ecology, such as fractal geometry, field experiments and eddy co-variance measures. Despite this diversity of topics, there are plenty of points of contact and cross-reference.
Download or read book Exploitation of Environmental Heterogeneity by Plants written by and published by Academic Press. This book was released on 2012-12-02 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is a new emerging interest in the effects of gaps and patches on succession and biodiversity. This innovative volume is a synthesis of studies of plant responses to temporal and spatial heterogeneity, the exploitation of resources from pulses and patches by plants, and their competition with neighbors in the face of this variability.Aboveground, the book focuses upon the nature of canopy patchiness, consequences of this heterogeneity for the light environment, and the mechanisms by which plants respond to and exploit this patchiness. Belowground, the text explores the heterogeneity of soil environments and how root systems obtain nutrients and water in the context of this temporal and spatial variability. As a new reference in an evolving and growing field, this text is sure to be a valuable tool for researchers and advanced students in plant physiology, ecology, agronomy, and forestry alike.
Download or read book Eucalypt Ecology written by Jann Elizabeth Williams and published by Cambridge University Press. This book was released on 1997-11-13 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dominant trees of Australia, eucalypts make up a remarkable genus. This authoritative volume provides current reviews by active researchers of many disciplines, including evolutionary history, genetics, distribution and modelling, the relationship of eucalypts to fire and nutrients, ecophysiology, pollination and reproductive ecology, interactions between eucalypts and other co-existing biota (including fungi, invertebrates and vertebrates), and conservation and management. Together these reviews shed light on the reasons for the great success of eucalypts in Australian environments, and provide a comprehensive summary for comparison with the ecology of major woody plant genera in other continents. This volume is of particular relevance to Australian ecologists, but also provides a stimulating perspective to students of vegetation ecology in all continents.
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 Canopy Photosynthesis From Basics to Applications written by Kouki Hikosaka and published by Springer. This book was released on 2015-12-17 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: The last 30 years has seen the development of increasingly sophisticated models that quantify canopy carbon exchange. These models are now essential parts of larger models for prediction and simulation of crop production, climate change, and regional and global carbon dynamics. There is thus an urgent need for increasing expertise in developing, use and understanding of these models. This in turn calls for an advanced, yet easily accessible textbook that summarizes the “canopy science” and introduces the present and the future scientists to the theoretical background of the current canopy models. This book presents current knowledge of functioning of plant canopies, models and strategies employed to simulate canopy function, and the significance of canopy architecture, physiology and dynamics in ecosystems, landscape and biosphere.
Download or read book Wetland Plants written by Julie K. Cronk and published by CRC Press. This book was released on 2016-04-19 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: A detailed account of the biology and ecology of vascular wetland plants and their applications in wetland plant science, Wetland Plants: Biology and Ecology presents a synthesis of wetland plant studies and reviews from biology, physiology, evolution, genetics, community and population ecology, environmental science, and engineering. It provides a
Download or read book Methods in Comparative Plant Ecology written by G.A. Hendry and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Methods in Comparative Plant Ecology: A laboratory manual is a sister book to the widely acclaimed Comparative Plant Ecology by Grime, Hodgson and Hunt. It contains details on some 90 critical concise diagnostic techniques by over 40 expert contributors. In one volume it provides an authoritative bench-top guide to diagnostic techniques in experimental plant ecology.
