Download or read book Stable Isotopes in Tree Rings as Climate and Stress Indicators written by Markus Leuenberger and published by vdf Hochschulverlag AG. This book was released on 1998 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mit dt., franz. und ital. Zusammenfass.
Download or read book Stable Isotopes in Tree Rings written by Rolf T. W. Siegwolf and published by Springer Nature. This book was released on 2022 with total page 775 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Open Access volume highlights how tree ring stable isotopes have been used to address a range of environmental issues from paleoclimatology to forest management, and anthropogenic impacts on forest growth. It will further evaluate weaknesses and strengths of isotope applications in tree rings. In contrast to older tree ring studies, which predominantly applied a pure statistical approach this book will focus on physiological mechanisms that influence isotopic signals and reflect environmental impacts. Focusing on connections between physiological responses and drivers of isotope variation will also clarify why environmental impacts are not linearly reflected in isotope ratios and tree ring widths. This volume will be of interest to any researcher and educator who uses tree rings (and other organic matter proxies) to reconstruct paleoclimate as well as to understand contemporary functional processes and anthropogenic influences on native ecosystems. The use of stable isotopes in biogeochemical studies has expanded greatly in recent years, making this volume a valuable resource to a growing and vibrant community of researchers.
Download or read book Stable Carbon Isotope Approach to Distinguish Climate Stress from Other Imposed Stresses in Coniferous Forests written by Jeanne A. Panek and published by . This book was released on 1995 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: To understand the effect of human-induced stresses on forests, there is a need for a method to separate effects of imposed stress from effects of natural climate stress. I developed an approach to predict forest response to climate stress using as indicators stable carbon isotopes in tree foliage and growth-rings. This approach required understanding and modeling the relation between climate and isotope abundance in tree tissue. Isotope abundance is highly variable within and between trees. Before modifying, it was necessary to identify important sources of this isotope variability to ensure that I included the major components in the model. Six study sites across a climate gradient in Oregon incorporated the broad range of climate types necessary to explore [delta]13C variability, and to establish and test the model. Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) was common to all sites across the gradient. Patterns of [delta]13C variability within the canopy of Douglas-fir trees implied that xylem hydraulics pose important limitations to carbon uptake. Branch length was significantly correlated with [delta]13C in the foliage at branch tips, which suggested that stem hydraulics were involved in the relation, as branch length is a measure of path length of water movement. The importance of hydraulic properties in [delta]13C variability was confirmed by measuring branch hydraulic, specific, and leaf-specific conductivity of the same branches in which [delta]13C was measured. A strong inverse relation between specific and leaf-specific conductivity and foliar [delta]13C was found, as predicted by theory, and confirmed on several age-classes of foliage. The model which best predicted annual variability in [delta]13C in foliage and tree rings over a range of climate types included environmental constraints to stomata and xylem hydraulic properties. The model predicted [delta]13C in foliage west of the Oregon Cascade Mts. extremely well. East of the Cascades, site means were well-characterized, but annual variability was not. Annual variability in tree-ring [delta]13C was poorly characterized by the model, probably because annual variation in whole-canopy hydraulics was inadequately described by the hydraulic measure. Refinements for improving the tree-ring [delta]13C relation are suggested.
Download or read book Stable Isotopes as Indicators of Ecological Change written by and published by Academic Press. This book was released on 2011-09-21 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 20th century has experienced environmental changes that appear to be unprecedented in their rate and magnitude during the Earth's history. For the first time, Stable Isotopes as Indicators of Ecological Change brings together a wide range of perspectives and data that speak directly to the issues of ecological change using stable isotope tracers. The information presented originates from a range of biological and geochemical sources and from research fields within biological, climatological and physical disciplines covering time-scales from days to centuries. Unlike any other reference, editors discuss where isotope data can detect, record, trace and help to interpret environmental change. - Provides researchers with groundbreaking data on how to predict the terrestrial ecosystems response to the ongoing rapid alterations - Reveals how ecosystems have responded to environmental and biotic fluctuations in the past - Includes examples from research by a wide range of biological and physical scientists who are using isotopic records to both detect and interpret environmental change
Download or read book Biologic Markers of Air Pollution Stress and Damage in Forests written by National Research Council and published by National Academies Press. This book was released on 1989-01-01 with total page 377 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is not much question that plants are sensitive to air pollution, nor is there doubt that air pollution is affecting forests and agriculture worldwide. In this book, specific criteria and evaluated approaches to diagnose the effects of air pollution on trees and forests are examined.
Download or read book Fundamentals of Tree Ring Research written by James H. Speer and published by University of Arizona Press. This book was released on 2010 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive text addresses all of the subjects that a reader who is new to the field will need to know and will be a welcome reference for practitioners at all levels. It includes a history of the discipline, biological and ecological background, principles of the field, basic scientific information on the structure and growth of trees, the complete range of dendrochronology methods, and a full description of each of the relevant subdisciplines.
Download or read book Stable Oxygen Isotopes in Tree Rings as an Indicator of Solar Variability written by Paul Raymond Hurt and published by . This book was released on 1977 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stable Isotopes in Tree Rings written by D. L. Hemming and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biogeochemical Investigations of Terrestrial Freshwater and Wetland Ecosystems across the Globe written by R. Kelman Wieder and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt: Here is a collection of papers from BIOGEOMON, The Fourth International Symposium on Ecosystem Behavior. The contributions address a wider-than-ever range of concerns: aspects of catchment monitoring and modeling; nitrogen transformations and processes; stable and radiogenic isotopes; biogeochemistry of restored ecosystems; and the dynamics of such chemicals as mercury and phosphorous, among many other topics.
Download or read book Stable Isotope Ecology written by Brian Fry and published by Springer Science & Business Media. This book was released on 2007-01-15 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: A solid introduction to stable isotopes that can also be used as an instructive review for more experienced researchers and professionals. The book approaches the use of isotopes from the perspective of ecological and biological research, but its concepts can be applied within other disciplines. A novel, step-by-step spreadsheet modeling approach is also presented for circulating tracers in any ecological system, including any favorite system an ecologist might dream up while sitting at a computer. The author’s humorous and lighthearted style painlessly imparts the principles of isotope ecology. The online material contains color illustrations, spreadsheet models, technical appendices, and problems and answers.
Download or read book Trace Elements written by B. Markert and published by Elsevier. This book was released on 2000-08-24 with total page 595 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume discusses major areas of primary concern for the understanding of the complexity associated with ecological trace element research. These include sources and fates of trace elements; analytical techniques; and the distribution of trace elements in biota and soil and sediment reservoirs. Case studies, field work and laboratory studies intensively discussed in this volume are useful to enhance our knowledge about processes related to the biological response of trace metal stress under realistic environmental conditions.
Download or read book Abrupt Climate Change written by National Research Council and published by National Academies Press. This book was released on 2002-04-23 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: The climate record for the past 100,000 years clearly indicates that the climate system has undergone periodic-and often extreme-shifts, sometimes in as little as a decade or less. The causes of abrupt climate changes have not been clearly established, but the triggering of events is likely to be the result of multiple natural processes. Abrupt climate changes of the magnitude seen in the past would have far-reaching implications for human society and ecosystems, including major impacts on energy consumption and water supply demands. Could such a change happen again? Are human activities exacerbating the likelihood of abrupt climate change? What are the potential societal consequences of such a change? Abrupt Climate Change: Inevitable Surprises looks at the current scientific evidence and theoretical understanding to describe what is currently known about abrupt climate change, including patterns and magnitudes, mechanisms, and probability of occurrence. It identifies critical knowledge gaps concerning the potential for future abrupt changes, including those aspects of change most important to society and economies, and outlines a research strategy to close those gaps. Based on the best and most current research available, this book surveys the history of climate change and makes a series of specific recommendations for the future.
Download or read book Natural Climate Variability on Decade to Century Time Scales written by National Research Council and published by National Academies Press. This book was released on 1996-08-30 with total page 645 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume reflects the current state of scientific knowledge about natural climate variability on decade-to-century time scales. It covers a wide range of relevant subjects, including the characteristics of the atmosphere and ocean environments as well as the methods used to describe and analyze them, such as proxy data and numerical models. They clearly demonstrate the range, persistence, and magnitude of climate variability as represented by many different indicators. Not only do natural climate variations have important socioeconomic effects, but they must be better understood before possible anthropogenic effects (from greenhouse gas emissions, for instance) can be evaluated. A topical essay introduces each of the disciplines represented, providing the nonscientist with a perspective on the field and linking the papers to the larger issues in climate research. In its conclusions section, the book evaluates progress in the different areas and makes recommendations for the direction and conduct of future climate research. This book, while consisting of technical papers, is also accessible to the interested layperson.
Download or read book Forest Health written by John L. Innes and published by Oxford University Press, USA. This book was released on 1993 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book assesses the current state of knowledge about forest declines, particularly as they relate to air pollution. Many declines are shown to be unrelated to air pollution and, in other cases, the links between air pollution and the condition of the trees is extremely tenuous. Factors such as nutrient depletion due to past management practices and drought are shown to have had a major influence on the health of trees. In many cases, the evidence for a decline in tree condition is at best ambiguous, and much of the concern appears to have been generated by political and media interest rather than by a critical evaluation of the available data. A detailed examination of the comprehensive data collected in the British forest health monitoring program over the last five years indicates the complexity of the process involved and illustrates the dangers of taking data from a single year at face value. Many of the indices used to assess trees are of questionable value when compared over time or space, as their subjective nature precludes any reliable comparisons. Studies of annual increment and wood quality indicate that the international market for timber is unlikely to be affected in either the long or the short term.
Download or read book Handbook of Stable Isotope Analytical Techniques written by Pier A. de Groot and published by Elsevier. This book was released on 2004-10-27 with total page 1265 pages. Available in PDF, EPUB and Kindle. Book excerpt: (Parent with price) Volume I contains subjective reviews, specialized and novel technique descriptions by guest authors. Part 1 includes contributions on purely analytical techniques and Part 2 includes matters such as development of mass spectrometers, stability of ion sources, standards and calibration, correction procedures and experimental methods to obtain isotopic fractionation factors.Volume II will be available in 2005.
Download or read book Isotopes in Tree Rings written by R. J. Francey and published by . This book was released on 1984 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tree Rings as Indicators of Ecosystem Health written by Timothy E. Lewis and published by Springer. This book was released on 1995 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the principles and applications of dendrochronology and dendrochemistry. It illustrates how these approaches are used to determine the history of natural and anthropogenic stresses on forest ecosystems and to evaluate the present status of the health of ecosystems. ****This abstract needs to be reworked**** This book is a combination of dendrochronology and dendrochemistry. Trees record the passage of each year by the formation of annual rings. The elements deposited in the wood serve as historical records of past environmental change due to global climate change, acidic deposition, heavy metal deposition, ground water contamination, and many other anthropogenic stresses. Dendrochemistry is currently being used as an indicator of forest health in the joint U.S. EPA/U.S. Forest Service long-term monitoring program called Forest Health Monitoring.
