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Author : Kathleen Ann Lohse
Publisher :
ISBN 13 :
Total Pages : 512 pages
Book Rating : 4.:/5 (34 download)
Download or read book Hydrological and Biogeochemical Controls on Nitrogen Losses from Tropical Forests written by Kathleen Ann Lohse and published by . This book was released on 2002 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Peter M. Vitousek
Publisher : Princeton University Press
ISBN 13 : 0691190348
Total Pages : 246 pages
Book Rating : 4.6/5 (911 download)
Download or read book Nutrient Cycling and Limitation written by Peter M. Vitousek and published by Princeton University Press. This book was released on 2018-06-26 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: The availability or lack of nutrients shapes ecosystems in fundamental ways. From forest productivity to soil fertility, from the diversity of animals to the composition of microbial communities, nutrient cycling and limitation are the basic mechanisms underlying ecosystem ecology. In this book, Peter Vitousek builds on over twenty years of research in Hawai'i to evaluate the controls and consequences of variation in nutrient availability and limitation. Integrating research from geochemistry, pedology, atmospheric chemistry, ecophysiology, and ecology, Vitousek addresses fundamental questions: How do the cycles of different elements interact? How do biological processes operating in minutes or hours interact with geochemical processes operating over millions of years? How does biological diversity interact with nutrient cycling and limitation in ecosystems? The Hawaiian Islands provide the author with an excellent model system for answering these questions as he integrates across levels of biological organization. He evaluates the connections between plant nutrient use efficiency, nutrient cycling and limitation within ecosystems, and nutrient input-output budgets of ecosystems. This book makes use of the Hawaiian ecosystems to explore the mechanisms that shape productivity and diversity in ecosystems throughout the world. It will be essential reading for all ecologists and environmental scientists.
Download or read book Plant and Microbial Controls on Nitrogen Retention and Loss in a Humid Tropical Forest written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Humid tropical forests are generally characterized by the lack of nitrogen (N) limitation to net primary productivity, yet paradoxically have high potential for N loss. We conducted an intensive field experiment with 15NH4 and 15NO3 additions to highly weathered tropical forest soils to determine the relative importance of N retention and loss mechanisms. Over half of all the NH4 produced from gross mineralization was rapidly converted to NO3− during the process of gross nitrification. During the first 24 h plant roots took up 28 % of the N mineralized, dominantly as NH4, and were a greater sink for N than soil microbial biomass. Soil microbes were not a significant sink for added 15NH4+ or 15NO3− during the first 24 hr, and only for 15NH4+ after 7 d. Patterns of microbial community composition, as determined by Terminal Restriction Fragment Length Polymorphism analysis, were weakly, but significantly correlated with nitrification and denitrification to N2O. Rates of dissimilatory NO3− reduction to NH4+ (DNRA) were high in this forest, accounting for up to 25 % of gross mineralization and 35 % of gross nitrification. DNRA was a major sink for NO3− which may have contributed to the lower rates of N2O and leaching losses. Despite considerable N conservation via DNRA and plant NH4+ uptake, the fate of approximately 45% of the NO3− produced and 22% of the NH4+ produced were not measured in our fluxes, suggesting that other important pathways for N retention and loss (e.g., denitrification to N2) are important in this system. The high proportion of mineralized N that was rapidly nitrified and the fates of that NO3− highlight the key role of gross nitrification as a proximate control on N retention and loss in humid tropical forest soils. Furthermore, our results demonstrate the importance of the coupling between DNRA and plant uptake of NH4+ as a potential N conserving mechanism within tropical forests.
Author : Delphis F. Levia
Publisher : Springer Science & Business Media
ISBN 13 : 9400713630
Total Pages : 734 pages
Book Rating : 4.4/5 (7 download)
Download or read book Forest Hydrology and Biogeochemistry written by Delphis F. Levia and published by Springer Science & Business Media. This book was released on 2011-06-15 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt: This international rigorously peer-reviewed volume critically synthesizes current knowledge in forest hydrology and biogeochemistry. It is a one-stop comprehensive reference tool for researchers and practitioners in the fields of hydrology, biogeoscience, ecology, forestry, boundary-layer meteorology, and geography. Following an introductory chapter tracing the historical roots of the subject, the book is divided into the following main sections: · Sampling and Novel Approaches · Forest Hydrology and Biogeochemistry by Ecoregion and Forest Type · Hydrologic and Biogeochemical Fluxes from the Canopy to the Phreatic Surface · Hydrologic and Biogeochemical Fluxes in Forest Ecosystems: Effects of Time, Stressors, and Humans The volume concludes with a final chapter that reflects on the current state of knowledge and identifies some areas in need of further research.
Author :
Publisher :
ISBN 13 :
Total Pages : 768 pages
Book Rating : 4.3/5 (91 download)
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2003 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Christiane Runyan
Publisher : Cambridge University Press
ISBN 13 : 1316654222
Total Pages : 277 pages
Book Rating : 4.3/5 (166 download)
Download or read book Global Deforestation written by Christiane Runyan and published by Cambridge University Press. This book was released on 2016-04-18 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: Global Deforestation provides a concise but comprehensive examination of the variety of ways in which deforestation modifies environmental processes, as well as the societal implications of these changes. The book stresses how forest ecosystems may be prone to nearly irreversible degradation. To prevent the loss of important biophysical and socioeconomic functions, forests need to be adequately managed and protected against the increasing demand for agricultural land and forest resources. The book describes the spatial extent of forests, and provides an understanding of the past and present drivers of deforestation. It presents a theoretical background to understand the impacts of deforestation on biodiversity, hydrological functioning, biogeochemical cycling, and climate. It bridges the physical and biological sciences with the social sciences by examining economic impacts and socioeconomic drivers of deforestation. This book will appeal to advanced students, researchers and policymakers in environmental science, ecology, forestry, hydrology, plant science, ecohydrology, and environmental economics.
Author : Glen O. Klock
Publisher :
ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.:/5 (319 download)
Download or read book Streamflow Nitrogen Loss Following Forest Erosion Control Fertilization written by Glen O. Klock and published by . This book was released on 1971 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Henry Lin
Publisher : Academic Press
ISBN 13 : 0123869870
Total Pages : 859 pages
Book Rating : 4.1/5 (238 download)
Download or read book Hydropedology written by Henry Lin and published by Academic Press. This book was released on 2012-07-09 with total page 859 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydropedology is a microcosm for what is happening in Soil Science. Once a staid discipline found in schools of agriculture devoted to increasing crop yield, soil science is transforming itself into an interdisciplinary mulch with great significance not only for food production but also climate change, ecology, preservation of natural resources, forestry, and carbon sequestration. Hydropedology brings together pedology (soil characteristics) with hydrology (movement of water) to understand and achieve the goals now associated with modern soil science. - The first book of its kind in the market - Highly interdisciplinary, involving new thinking and synergistic approaches - Stimulating case studies demonstrate the need for hydropedology in various practical applications - Future directions and new approaches are present to advance this emerging interdisciplinary science
Author : W.H. Schlesinger
Publisher : Academic Press
ISBN 13 : 0128146095
Total Pages : 765 pages
Book Rating : 4.1/5 (281 download)
Download or read book Biogeochemistry written by W.H. Schlesinger and published by Academic Press. This book was released on 2020-08-07 with total page 765 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biogeochemistry: An Analysis of Global Change, Fourth Edition, considers how the basic chemical conditions of the Earth, from atmosphere to soil to seawater, have been, and are being, affected by the existence of life. Human activities in particular, from the rapid consumption of resources to the destruction of the rainforests and the expansion of smog-covered cities, are leading to rapid changes in the basic chemistry of the Earth. The new edition features expanded coverage of topics, including the cryosphere, the global hydrogen cycle, biomineralization and the movement of elements across landscapes and continents by organisms and through global trade. The book will help students and researchers extrapolate small-scale examples to a global level. With cross-referencing of chapters, figures and tables, and an interdisciplinary coverage of the topic, this updated edition provides an excellent framework for examining global change and environmental chemistry. Includes an extensive review and up-to-date synthesis of the current literature on the Earth's biogeochemistry Synthesizes the global cycles of carbon, nitrogen, phosphorous and sulfur, and suggests the best current budgets for atmospheric gases such as ammonia, nitrous oxide, dimethyl sulfide, and carbonyl sulfide Features updated literature references and expanded coverage of topics, including the cryosphere, the global hydrogen cycle, biomineralization and the movement of elements across landscapes and continents by organisms and through global trade
Author :
Publisher : Newnes
ISBN 13 : 0444531998
Total Pages : 2131 pages
Book Rating : 4.4/5 (445 download)
Download or read book Treatise on Water Science written by and published by Newnes. This book was released on 2010-09-01 with total page 2131 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water quality and management are of great significance globally, as the demand for clean, potable water far exceeds the availability. Water science research brings together the natural and applied sciences, engineering, chemistry, law and policy, and economics, and the Treatise on Water Science seeks to unite these areas through contributions from a global team of author-experts. The 4-volume set examines topics in depth, with an emphasis on innovative research and technologies for those working in applied areas. Published in partnership with and endorsed by the International Water Association (IWA), demonstrating the authority of the content Editor-in-Chief Peter Wilderer, a Stockholm Water Prize recipient, has assembled a world-class team of volume editors and contributing authors Topics related to water resource management, water quality and supply, and handling of wastewater are treated in depth
Author : Mark A. Sutton
Publisher : Cambridge University Press
ISBN 13 : 1139501372
Total Pages : 665 pages
Book Rating : 4.1/5 (395 download)
Download or read book The European Nitrogen Assessment written by Mark A. Sutton and published by Cambridge University Press. This book was released on 2011-04-14 with total page 665 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presenting the first continental-scale assessment of reactive nitrogen in the environment, this book sets the related environmental problems in context by providing a multidisciplinary introduction to the nitrogen cycle processes. Issues of upscaling from farm plot and city to national and continental scales are addressed in detail with emphasis on opportunities for better management at local to global levels. The five key societal threats posed by reactive nitrogen are assessed, providing a framework for joined-up management of the nitrogen cycle in Europe, including the first cost-benefit analysis for different reactive nitrogen forms and future scenarios. Incorporating comprehensive maps, a handy technical synopsis and a summary for policy makers, this landmark volume is an essential reference for academic researchers across a wide range of disciplines, as well as stakeholders and policy makers. It is also a valuable tool in communicating the key environmental issues and future challenges to the wider public.
Author : Steven Socrates Perakis
Publisher :
ISBN 13 :
Total Pages : 228 pages
Book Rating : 4.E/5 ( download)
Download or read book Nitrogen Cycling in Unpolluted Old-growth Forests, Southern Chile written by Steven Socrates Perakis and published by . This book was released on 2000 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Carl F. Jordan
Publisher :
ISBN 13 :
Total Pages : 210 pages
Book Rating : 4.:/5 (319 download)
Download or read book Nutrient Cycling in Tropical Forest Ecosystems written by Carl F. Jordan and published by . This book was released on 1985-11-20 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Brings together much of the recent literature on nutrient cycling due to conversion of forests to croplands, pastures, and plantation forests. It explains why nutrients are often very critical in tropical humid ecosystems and discusses principles that can guide land managers to conserve nutrients and sustain productivity.
Author : Mark E Fenn
Publisher :
ISBN 13 :
Total Pages : 60 pages
Book Rating : 4.:/5 (318 download)
Download or read book Air Pollution and Changes in Forest Nitrogen Status written by Mark E Fenn and published by . This book was released on 1998 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Devendra Amatya
Publisher : CABI
ISBN 13 : 1780646607
Total Pages : 309 pages
Book Rating : 4.7/5 (86 download)
Download or read book Forest Hydrology written by Devendra Amatya and published by CABI. This book was released on 2016-09-14 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forests cover approximately 26% of the world's land surface area and represent a distinct biotic community. They interact with water and soil in a variety of ways, providing canopy surfaces which trap precipitation and allow evaporation back into the atmosphere, thus regulating how much water reaches the forest floor as through fall, as well as pull water from the soil for transpiration. The discipline "forest hydrology" has been developed throughout the 20th century. During that time human intervention in natural landscapes has increased, and land use and management practices have intensified. The book will be useful for graduate students, professionals, land managers, practitioners, and researchers with a good understanding of the basic principles of hydrology and hydrologic processes.
Author :
Publisher :
ISBN 13 :
Total Pages : 734 pages
Book Rating : 4.3/5 (91 download)
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1990 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : R.S. Ambasht
Publisher : Springer Science & Business Media
ISBN 13 : 1461502233
Total Pages : 372 pages
Book Rating : 4.4/5 (615 download)
Download or read book Modern Trends in Applied Terrestrial Ecology written by R.S. Ambasht and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ecology and economics have Greek roots in oikos for "household", logos for "study", and nomics for "management". Thus, ecology and economics should have complemented one another for a proper growth and development without destruction, but, unfortunately, rapid industrialization, lure for fast financial gains, and commercialization activities have led to a widespread surge in pollution load, environmental degradation, habitat destruction, rapid loss ofbiodiversity, sudden rise in rate ofextinction ofmany wildlife and wild relatives of domesticated animals and cultivated cereals and other plants, global climate changes creating global rise in temperature, and CO levels and increased ultraviolet B at ground 2 level. Although these threats to human health have led us to look to ecology for their solutions and guidance for sustainable development without destruction, the industrial and technology houses are looking for alternative methods of development and resource use methods. The two global conferences of the United Nations in 1972 and 1992, and international programs of Man and the Biosphere (MAB), International Biological Program (IBP), International Geosphere, Biosphere program (lGBP), and World Conser vation Union (IUCN), of different commissions, United Nations Environmental Program (UNEP) efforts, Ramsar Conventions (for wetlands), and World Wide fund for Nature (WWF) (for nature in general and wildlife in particular) have focused attention of ecologists, naturalists, governments and Non-governmental organizations (NGOs) toward better conservation.
