Download or read book Preliminary Assessment of Selected Communities of Soil Organisms Under Different Conifer Species written by Shannon Marie Berch and published by . This book was released on 2001 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Preliminary look at the effects of different conifer species on collembolan, oribatid mite and macrofungal species.
Download or read book Growth and Survival of Douglas fir and Western Redcedar Planted at Different Densities and Species Mixtures written by Louise De Montigny and published by B.C. Ministry of Forests. This book was released on 2007 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Decisions about planting mixtures require an understanding of the survival and growth rates of the different species when grown together at different spacings; too many trees of either species may result in volume loss to overcrowding and mortality. The experiment described in this report examines the effects on growth and development of Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) and western redcedar (Thuja plicata Donn ex D. Don in Lamb) after 14 years when grown at 500, 1000, or 2000 stems per hectare in Douglas-fir-western redcedar mixes of 1:0, 1:1, 1:3, and 0:1. Survival and height, diameter at breast height (dbh), volume, and crown growth were measured.--Document.
Download or read book Tropical Soil Biology and Fertility written by Jonathan Michael Anderson and published by . This book was released on 1989 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this handbook methods are given to determine soil characteristics, organic matter compounds, phosphorus in soil, nitrogen fixation, soil solution sampling, plant nutrient uptake and the nitrogen availability
Download or read book The Biology of Soil written by Richard D. Bardgett and published by Oxford University Press. This book was released on 2005-06-02 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil science has undergone a renaissance with increasing awareness of the importance of soil organisms and below-ground biotic interactions as drivers of community and ecosystem properties.
Download or read book Methods of Soil Analysis Part 4 written by Jacob H. Dane and published by John Wiley & Sons. This book was released on 2020-05-27 with total page 1744 pages. Available in PDF, EPUB and Kindle. Book excerpt: The best single reference for both the theory and practice of soil physical measurements, Methods, Part 4 adopts a more hierarchical approach to allow readers to easily find their specific topic or measurement of interest. As such it is divided into eight main chapters on soil sampling and statistics, the solid, solution, and gas phases, soil heat, solute transport, multi-fluid flow, and erosion. More than 100 world experts contribute detailed sections.
Download or read book Root Ecology written by Hans de Kroon and published by Springer Science & Business Media. This book was released on 2003-05-21 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the course of evolution, a great variety of root systems have learned to overcome the many physical, biochemical and biological problems brought about by soil. This development has made them a fascinating object of scientific study. This volume gives an overview of how roots have adapted to the soil environment and which roles they play in the soil ecosystem. The text describes the form and function of roots, their temporal and spatial distribution, and their turnover rate in various ecosystems. Subsequently, a physiological background is provided for basic functions, such as carbon acquisition, water and solute movement, and for their responses to three major abiotic stresses, i.e. hard soil structure, drought and flooding. The volume concludes with the interactions of roots with other organisms of the complex soil ecosystem, including symbiosis, competition, and the function of roots as a food source.
Download or read book Earthworm Ecology and Biogeography in North America written by Paul F. Hendrix and published by CRC Press. This book was released on 1995-02-22 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is generally recognized that where earthworms are abundant they can exert significant influence on the structure and function of soils. Compared to other biogeographic regions of Earth, however, surprisingly little is known about the earthworm fauna of the western hemisphere and their role in soil processes. This book is the first comprehensive review and analysis of the state of understanding of earthworm biogeography and ecology in North America. Topics of in-depth discussion include earthworm systematics, biogeography and ecology, influences on soil structure and ecosystem nutrient dynamics, and implications for ecosystem management. Each chapter provides a general review and statement of current understanding, an assessment of current research problems, recent developments and advances, and priorities for future research and applications. This book is a must for researchers and students studying the soil-related facets of terrestrial ecology.
Download or read book Perspectives in Ecological Theory written by Ramón Margalef and published by . This book was released on 1968 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ecosystem as a cybernetic system. Ecological succession and exploitation by man. The study of pelagic ecosystems. Evolution in the frame of ecosystem organization.
Download or read book Trees Crops and Soil Fertility written by G. Schroth and published by CABI. This book was released on 2003-02-19 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation. Successful agroforestry requires an understanding of the complex relationship between trees, crops and soils. This book provides a review of both economic and biophysical aspects of soil use and research in agroforestry, with an emphasis on nutrient-poor forest and savanna soils. Key topics covered include the economics of soil fertility management, cycling of water, nutrients and organic matter, soil structure, and soil biological processes. The book combines synthetic overviews of research results and a review of methods used in research.From the foreword: 2The book is written within a particular context - soil fertility development under agroforestry. At first this may seem very specific and thus limited in appeal and application. But over the last decade or so agroforestry research has been one of the most influential in developing new insights into soil biology and fertility and thus provides a very suitable framework for review of progress. Furthermore the influence of trees on soil is profound and of significance beyond agroforestry systems, so the book is likely to be of interest in the wider spheres of agriculture, forestry and ecological sciences.3 Mike Swift, TSBF, Nairobi, Kenya.
Download or read book The Nature of Plant Communities written by J. Bastow Wilson and published by Cambridge University Press. This book was released on 2019-03-21 with total page 373 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a comprehensive review of the role of species interactions in the process of plant community assembly.
Download or read book Soil Biological Communities and Ecosystem Resilience written by Martin Lukac and published by Springer. This book was released on 2017-10-06 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume explores current knowledge and methods used to study soil organisms and to attribute their activity to wider ecosystem functions. Biodiversity not only responds to environmental change, but has also been shown to be one of the key drivers of ecosystem function and service delivery. Soil biodiversity in tree-dominated ecosystems is also governed by these principles, the structure of soil biological communities is clearly determined by environmental, as well as spatial, temporal and hierarchical factors. Global environmental change, together with land-use change and ecosystem management by humans, impacts the aboveground structure and composition of tree ecosystems. Due to existing knowledge of the close links between the above- and belowground parts of terrestrial ecosystems, we know that soil biodiversity is also impacted. However, very little is known about the nature of these impacts; effects on the overall level of biodiversity, the magnitude and diversity of functions soil biodiversity generates, but also on the present and future stability of tree ecosystems and soils. Even though much remains to be learned about the relationships between soil biodiversity and tree ecosystem functionality, it is clear that better effort needs to be made to describe and understand key processes which take place in soils and are driven by soil biota.
Download or read book Causes and Consequences of Species Diversity in Forest Ecosystems written by Aaron M. Ellison and published by MDPI. This book was released on 2019-07-30 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue Causes and Consequences of Species Diversity in Forest Ecosystems that was published in Forests
Download or read book Urban Soils written by Phillip J. Craul and published by John Wiley & Sons. This book was released on 1999-03-25 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: The soil which is found in large cities offer distinctive challenges to the landscape architect or horticulturist responsible for maintaining these urban plantings. Often compacted, contaminated, or otherwise unsuitable for use in major landscape projects, these soils require practical methods which can insure a successful outcome of a landscape project. This applications-oriented, introductory reference addresses numerous topics in the field of urban soil science.
Download or read book An Introduction to Mathematical Ecology written by E. C. Pielou and published by New York : Wiley-Interscience. This book was released on 1969 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: Population dynamics; Spatial patterns in one-species populations; Spatial relations of two or more species; Many-species populations.
Download or read book The Regional Impacts of Climate Change written by Intergovernmental Panel on Climate Change. Working Group II. and published by Cambridge University Press. This book was released on 1998 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cambridge, UK : Cambridge University Press, 1998.
Download or read book Soil pollution a hidden reality written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2018-04-30 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document presents key messages and the state-of-the-art of soil pollution, its implications on food safety and human health. It aims to set the basis for further discussion during the forthcoming Global Symposium on Soil Pollution (GSOP18), to be held at FAO HQ from May 2nd to 4th 2018. The publication has been reviewed by the Intergovernmental Technical Panel on Soil (ITPS) and contributing authors. It addresses scientific evidences on soil pollution and highlights the need to assess the extent of soil pollution globally in order to achieve food safety and sustainable development. This is linked to FAO’s strategic objectives, especially SO1, SO2, SO4 and SO5 because of the crucial role of soils to ensure effective nutrient cycling to produce nutritious and safe food, reduce atmospheric CO2 and N2O concentrations and thus mitigate climate change, develop sustainable soil management practices that enhance agricultural resilience to extreme climate events by reducing soil degradation processes. This document will be a reference material for those interested in learning more about sources and effects of soil pollution.
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1998 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt:
