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Biomassa Microbiana Carbono E Nitrogenio Do Solo Em Pastagem Nativa No Pantanal
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Book Synopsis Biomassa microbiana, carbono e nitrogênio do solo em pastagem nativa no Pantanal by : Fernando Antonio Fernandes Fernandes
Download or read book Biomassa microbiana, carbono e nitrogênio do solo em pastagem nativa no Pantanal written by Fernando Antonio Fernandes Fernandes and published by . This book was released on 2007 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: Este estudo foi conduzido em área de pastagem nativa dominada por "capim carona", Elionurus muticus (Spreng.). Kuntze, no Pantanal, visando avaliar o efeito da queima sobre os conteúdos de C e N do solo.
Book Synopsis Biomassa microbiana e matéria orgânica leve em um argissolo vermelho amarelo sob vegetação de cerrado e de cultivo de grãos em Redenção-Pará by : K. do S. Q. de Q. BITTENCOURT
Download or read book Biomassa microbiana e matéria orgânica leve em um argissolo vermelho amarelo sob vegetação de cerrado e de cultivo de grãos em Redenção-Pará written by K. do S. Q. de Q. BITTENCOURT and published by . This book was released on 2003 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: As áreas de Cerrado representam um importante potencial na agricultura da Amazônia, porém há poucas informações a respeito dos efeitos resultantes da população microbiana no manejo desses solos. E a matéria orgânica desempenha papel no desenvolvimento das plantas, pois se constitui num eficiente condicionador do meio, influenciando o comportamento físico, reações químicas e a atividade biológica do solo. Objetivando determinar a quantidade de C e N contidos na biomassa microbiana do solo(BMS) e sua atividade, avaliaram-se o teor de carbono orgânico do solo (C-org), Nitrogênio total (Ntotal), carbono da biomassa microbiana (CBM), Nitrogênio da Biomassa Microbiana (NBM), relações de Cmicrobiano e Corgânico (CBM/C), Nmicrobiano/Ntotal (NBM/N) e relação C/N, respiração basal (RESP), quociente metabólico (qCO2), assim como a dinâmica da matéria orgânica leve (MOL) através dos teores de nitrogênio (N), fósforo (P), cálcio (Ca), magnésio (Mg) e potássio (K) de um Argissolo Vermelho-Amarelo Distrófico coletado em ecossistemas de Mata de Cerrado (C), Campo natural (CN) e Área de Cultivo de grãos (CG) do Município de Redenção/Pa. Foram coletadas 4 amostras compostas, formadas a partir de 4 amostras simples nas duas profundidades de 0-5 cm e 5-10 cm para BMS, e 0-5 cm para a MOL em agosto de 2001 (estação seca) e fevereiro de 2002 (estação chuvosa). Determinou-se C-orgânico pelo método de Walkley-Black, o N total de acordo com o método Kjeldahl, CBM (Carbono da Biomassa Microbiana) e NBM (Nitrogênio da Biomassa Microbiana) pelo método de fumigação-extração e RESP por evolução do CO2 durante 10 dias. A MOL foi separada por flotação, e seca em estufa a 60 oC, em seguida foram pesadas e trituradas. O delineamento experimental foi inteiramente casualizado com arranjo fatorial 3x2x2 (Sistema de Manejo x Estação x profundidade de coleta) para BMS e arranjo fatorial 3x2 (Sistema de Manejo x Estação de coleta) para a MOL. A BMS se concentrou nos primeiros 5 cm do solo, em todas as áreas. O menor qCO2 e alta relação C/N do solo na estação chuvosa proporcionou estabelecer uma forma de manejo com menor possibilidade de distúrbios ambientais e maior estabilização da atividade microbiana. A MOL representou um bom potencial para restabelecimento das atividades biológicas na reciclagem de nutrientes, considerando-se assim como indicadora da qualidade do solo.
Book Synopsis The Ecology of Trees in the Tropical Rain Forest by : I. M. Turner
Download or read book The Ecology of Trees in the Tropical Rain Forest written by I. M. Turner and published by Cambridge University Press. This book was released on 2001-07-05 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our knowledge of the ecology of tropical rain-forest trees is limited, yet a good understanding of the trees is essential to unravelling the workings of the forest itself. This book aims to summarise contemporary understanding of the ecology of tropical rain-forest trees, with particular emphasis on comparative ecology.
Download or read book MetaWin written by Michael S. Rosenberg and published by . This book was released on 1997 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Cycles of Soils by : F. J. Stevenson
Download or read book Cycles of Soils written by F. J. Stevenson and published by Wiley-Interscience. This book was released on 1986-01-17 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: The carbon cycle. Carbon balance of the soil and role of organic matter in soil fertility. Environmental aspects of the soil carbon cycle. The nitrogen cycle in soil: global and ecological aspects. The international cycle of nitrogen in soil. Impact of nitrogen on health and the environment. The phosporus cycle. The sulfur cycle. The micronutrient cycle.
Book Synopsis Carbon Sequestration in Agricultural Soils by : Alessandro Piccolo
Download or read book Carbon Sequestration in Agricultural Soils written by Alessandro Piccolo and published by Springer Science & Business Media. This book was released on 2012-01-11 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: This compilation of techniques, methodologies and scientific data arises from a four-year Italian research project, which took place at university research stations in Turin, Piacenza, Naples and Potenza. Soil Organic Matter (SOM) represents an active and essential pool of the total organic carbon on the planet. Consequently, even small changes in this SOM carbon pool may have a significant impact on the concentration of atmospheric CO2. Recent new understanding of the chemical nature of SOM indicates that innovative and sustainable technologies may be applied to sequester carbon in agricultural soils. Overall results of the project have been applied to develop an innovative model for the prediction and description, both quantitatively and qualitatively, of carbon sequestration in agricultural soils. This book provides experts in different areas of soil science with a complete picture of the effects of new soil management methods and their potentials for practical application in farm management.
Book Synopsis Meta Win 2.0 by : Michael S. Rosenberg
Download or read book Meta Win 2.0 written by Michael S. Rosenberg and published by Sinauer Associates Incorporated. This book was released on 1999-10-01 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: MetaWin, first published in 1997, allows the user to easily carry out all common meta-analysis calculations on multiple independent studies from a wide variety of disciplines, including medicine, ecology, and the social sciences. Version 2.0 allows users to calculate any of six different effect sizes (vs. two, as in Version 1.0) from their data, and includes its own spreadsheet editor and statistical calculator. The analysis routine is greatly expanded, and graphics (e.g., funnel plots, histograms, etc.) have been added.
Download or read book Alley Farming written by B. T. Kang and published by IITA. This book was released on 1999 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Tropical Agriculturalist is a series of practical field guides and textbooks for: producers, farmers and farm managers, agricultural extension officers agricultural diploma, degree and vocational students, teachers and lecturers, senior secondary students, as reference books, adult education, rural and community development programmes.
Book Synopsis The Palms of the Amazon by : Andrew Henderson
Download or read book The Palms of the Amazon written by Andrew Henderson and published by . This book was released on 1995 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: The palms are among the most abundant, diverse, and important families of plants found in the Amazon. Based on extensive field work, this book provides a systematic treatment of all palms that occur naturally in the Amazon region. Each species is exhaustively described with reviews of their distribution, habitat, and ecology. Introductory chapters describe the physical setting of the Amazon region as well as on the biogeography and ecology of the palm family. This first modern treatment of the 135 species of Amazon palms provides a definitive account of their ecology, uses, and biogeography. It will be welcomed by students, teachers, and researchers of botany, ecology, agronomy, and conservation biology.
Book Synopsis Nitrous Oxide and Climate Change by : Keith Smith
Download or read book Nitrous Oxide and Climate Change written by Keith Smith and published by Routledge. This book was released on 2010-08-12 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrous oxide, N2O, is the third most important (in global warming terms) of the greenhouse gases, after carbon dioxide and methane. As this book describes, although it only comprises 320 parts per billion of the earth's atmosphere, it has a so-called Global Warming Potential nearly 300 times greater than that of carbon dioxide. N2O emissions are difficult to estimate, because they are predominantly biogenic in origin. The N2O is formed in soils and oceans throughout the world, by the microbial processes of nitrification and denitrification, that utilise the reactive N compounds ammonium and nitrate, respectively. These forms of nitrogen are released during the natural biogeochemical nitrogen cycle, but are also released by human activity. In fact, the quantity of these compounds entering the biosphere has virtually doubled since the beginning of the industrial age, and this increase has been matched by a corresponding increase in N2O emissions. The largest source is now agriculture, driven mainly by the use of synthetic nitrogen fertilisers. The other major diffuse source derives from release of NOx into the atmosphere from fossil fuel combustion and biomass burning, as well as ammonia from livestock manure. Some N2O also comes directly from combustion, and from two processes in the chemical industry: the production of nitric acid, and the production of adipic acid, used in nylon manufacture. Action is being taken to curb the industrial point-source emissions of N2O, but measures to limit or reduce agricultural emissions are inherently more difficult to devise. As we enter an era in which measures are being explored to reduce fossil fuel use and/or capture or sequester the CO2 emissions from the fuel, it is likely that the relative importance of N2O in the 'Kyoto basket' of greenhouse gases will increase, because comparable mitigation measures for N2O are inherently more difficult, and because expansion of the land area devoted to crops, to feed the increasing global population and to accommodate the current development of biofuels, is likely to lead to an increase in N fertiliser use, and thus N2O emission, worldwide. The aim of this book is to provide a synthesis of scientific information on the primary sources and sinks of nitrous oxide and an assessment of likely trends in atmospheric concentrations over the next century and the potential for mitigation measures.
Book Synopsis Managing Biodiversity in Agricultural Ecosystems by : Devra Ivy Jarvis
Download or read book Managing Biodiversity in Agricultural Ecosystems written by Devra Ivy Jarvis and published by Columbia University Press. This book was released on 2007 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes how farmers manage, maintain, and benefit from biodiversity in agricultural production systems. Includes the most recent research and developments in the maintenance of local diversity at the genetic, species, and ecosystem levels.
Book Synopsis Environmental Change and Tropical Geomorphology by : Ian Douglas
Download or read book Environmental Change and Tropical Geomorphology written by Ian Douglas and published by Routledge. This book was released on 2020-05-11 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: The tropics provide the key to understanding much biological and Earth science. This is particularly true for the study of landforms, which in higher latitudes suffer great seasonal contrasts in process intensity and type, and which often in the past underwent the dramatic changes of glaciation and periglaciation. Yet studies in the tropics have shown that the legacy of past climate changes is much more dramatic than was formerly believed. This book, first published in 1985, brings together the variety of evidence about such environmental changes, over a variety of timescales, and sets it against the current knowledge of the nature of geomorphic processes in the tropics.
Book Synopsis Vegetation of the Earth and Ecological Systems of the Geo-biosphere by : Heinrich Walter
Download or read book Vegetation of the Earth and Ecological Systems of the Geo-biosphere written by Heinrich Walter and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phytomass and Primary Production of the Various Vegetational Zones and of the Entire Biosphere The biosphere is that thin layer at the earth's surface in which living organisms exist and biological cycling takes place. It includes the upper horizons of the soil in which plants root, the atmosphere near the ground, (insofar as organisms penetrate this space), and all the surface waters. More than 99% of the earth's biomass is phytomass, to which we shall limit our discussion. Amounts of phytomass are distinctly related to vegeta tional zones. Because accurate determination of phytomass and primary production is difficult, only gross estimates have been available until recently. However, in 1970, Bazilevich et al. published (in Russian) more accurate calculations, based on the rapidly accumulating literature, for the various thermal zones and bioclimatic regions of the earth. These authors calculated mean phyto mass and mean annual primary production for the various regions as dry mass (in tons) per hectare. On the basis of measurements of the areas covered by the individual regions, excluding rivers, lakes, glaciers, and permanent snow, total phytomass and total annual primary production for the various regions were obtained (see table). The sum of these figures is the phytomass and annual production of the land surface of the earth. In addition, the table gives corresponding data for the waters of the earth. The values involved are potential i. e. , they are based on natural vegetation uninfluenced by man.
Book Synopsis Methods in Applied Soil Microbiology and Biochemistry by : Kassem Alef
Download or read book Methods in Applied Soil Microbiology and Biochemistry written by Kassem Alef and published by Academic Press. This book was released on 1995-07-11 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quality control and quality assurance in applied soil microbiology and biochemistry. Soil sampling, handling, storage and analysis. Enrichment, isolation and counting of soil microrganisms. Anaerobic microbial activities in soil. Enzyme activities. Microbial biomass. Community structure. Field methods. Bioremediation of soil.
Book Synopsis Climate Dynamics of the Tropics by : S. Hastenrath
Download or read book Climate Dynamics of the Tropics written by S. Hastenrath and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 507 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first edition of my book "Climate and Circulation of the Tropics" was reasonably up to date to the middle of 1985. In a second printing in 1988 it was possible to complete a few literature references and to correct some misprints. However, vigorous research has taken place over the past five years in various areas of tropical climate dynamics, especially in the atmosphere-ocean mechanisms of climate anomalies, climate prediction, ocean circulation, and paleoclimates. Promising progress has also been made in the application of general circulation modelling to tropical climate problems. In the present second edition, named "Climate Dynamics of the Tropics", I have attempted to incorporate much of the recent work to late 1990. Chapters 8 and 9 have been essentially re-written, and major additions have been made to Chapters 4 and 12 in particular. I would like to acknowledge the continued support by the U.S. National Science Foundation over the past five years. B. Parthasarathy, Poona, and H. Lessmann, San Salvador, sent me updates of data series not easily accessible. I have benefitted from discussions with numerous colleagues in the United States and overseas. In the preparation of this second edition, Marilyn Wolff patiently transferred my illegible hand-written drafts onto word processor. Dierk Polzin and Dan Skemp assisted me with the creation of the page masters and the subject index and Christopher Collimore with the author index.
Book Synopsis Fire and Plants by : William J. Bond
Download or read book Fire and Plants written by William J. Bond and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: Large regions of the world are regularly burnt either deliberately or naturally. However, despite the widespread occurrence of such fire-prone ecosystems, and considerable body of research on plant population biology in relation to fire, until now there have only been limited attempts at a coherent conceptual synthesis of the field for use by students or researchers.
Book Synopsis International Trade Statistics 2009 by : World Trade Organization
Download or read book International Trade Statistics 2009 written by World Trade Organization and published by . This book was released on 2009-11 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication provides comprehensive, comparable, and up-to-date statistics on trade in merchandise and commercial services for an assessment of world trade flows by country, region, main product groups, and service categories. Additionally, 240 tables and charts depict trade developments from various perspectives and provide a number of long-term time series.
