Ecological aspects

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  • Collection of reports on forestry research is published in the journal International Forestry topics: Ecological aspects of the floral phenology of the cork-oak (Q suber L): why the Annual and Biennial biotypes appear?

    pdf8p toshiba7 08-10-2011 19 4   Download

  • The world’s climate is changing, and it will continue to change throughout the 21st century and beyond. Rising temperatures, new precipitation patterns, and other changes are already affecting many aspects of human society and the natural world. Climate change is transforming ecosystems at extraordinary rates and scales.

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  • Landscape ecology has emerged in the past decade as an important and useful tool for land-use planners and landscape architects. While professionals and scholars have begun to incorporate aspects of this new field into their work, there remains a need for a summary of key principles and how they might be applied in design and planning.This volume fills that need. It is a concise handbook that lists and illustrates key principles in the field, presenting specific examples of how the principles can be applied in a range of scales and diverse types of landscapes around the world....

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  • Enzymes that function within plants, animals, and microorganisms are fundamental to life, and their contributions to metabolic pathways and processes have been studied extensively. For over 100 years there has been interest in what today is called ecological or environmental enzymology. This aspect of enzymology originates from the work of Woods, who, in 1899, wrote about the survival and function in soil of plant peroxidases following their release from decaying plant roots.

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  • In response to a growing need to bridge aspects of geography and ecology, Troll (1950, 1968) coined the term “landscape ecology,” which was adopted as a new scientific discipline. According to Troll (1968), the landscape can be studied in terms of its morphology, classification, and changes in time (history), as well as the functional relationships between its components, which he called landscape ecology. Troll also considered that problems of landscape protection as well as management should be included in geographical analyses of landscapes.

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  • This book contains research on the chemistry of each step of biogas generation, along with engineering principles and practices, feasibility of biogas production in processing technologies, especially anaerobic digestion of waste and gas production system, its modeling, kinetics along with other associated aspects, utilization and purification of biogas, economy and energy issues, pipe design for biogas energy, microbiological aspects, phyto-fermentation, biogas plant constructions, assessment of ecological potential, biogas generation from sludge, rheological characterization, etc....

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  • Agroecology encompasses not only aspects of ecology and agriculture, but the ecology of sustainable food production systems, including the technology and related societal and cultural values (e.g. Gliessman 1998; Altieri and Hecht 1990; Altieri 1989, 1987, 1983) to better promote healthy and functional environments for a sustainable quality of life (see also Castillo et al. 2005). To provide effective com munication regarding the status and advances in this burgeoning field, connections must be established with many disciplines including (but not limited to)...

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  • This textbook covers Plant Ecology from the molecular to the global level.

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  • This book explores many of the aspects of the growing problem posed by antibiotic-resistant bacteria. What is unique about this book is that it is a blend of the purely scientific and the practical, an approach that is essential because antibiotic resistance is a social and economic problem as well as a scientific problem.

    pdf446p quang93l 30-03-2014 36 10   Download

  • Dynamical systems theory in mathematical biology and environmental science has attracted much attention from many scientific fields as well as mathematics. For example, “chaos” is one of its typical topics. Recently the preservation of endangered species has become one of the most important issues in biology and environmental science, because of the recent rapid loss of biodiversity in the world. In this respect, permanence or persistence, new concepts in dynamical systems theory, seem important.

    pdf189p chuyenphimbuon 21-07-2012 34 9   Download

  • Oceanography is a very complex science. Its field study, the knowledge of the oceans and the seas and their physical and biological characteristics, is fundamental to comprehend many oceanographic and ecological aspects that directly influence the human life and the planet health. From micro-scale, like coastal processes, to macro-scale, like Global Change, the oceans, the seas and the marine life, play the main role to maintain the earth equilibrium, both from a physical and a chemical point of view (e.g. carbon cycle and water masses dynamic)....

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  • .United Nations University Press is the publishing arm of United Nations University. UNU Press publishes scholarly and policy-oriented books and periodicals on the issues facing the United Nations and its people and member states, with particular emphasis upon international, regional, and trans-boundary policies.

    pdf350p coeus75 29-01-2013 32 7   Download

  • These related changes have locked the global economy and global ecology together in new ways. We have in the past been concerned about the impacts of economic growth upon the environment. We are now forced to concern ourselves with the impacts of ecological stress - degradation of soils, water regimes, atmosphere, and forests upon our economic prospects. We have in the more recent past been forced to face up to a sharp increase in economic interdependence among nations. We are now forced to accustom ourselves to an accelerating ecological interdependence among nations.

    pdf90p yeurauxanh88 28-09-2012 31 5   Download

  • Mangroves play an important role in coastal zones in many aspects e.g. extremely essential habitats for many species, coastlines protection from natural hazards, and so on. However, in Vietnam, like in other developing countries, these mangrove areas have been destroyed and encroached as a consequence of a poorly planned economic development. The study has been conducted in Phu Long - Gia Luan region, which have the largest mangrove area in the Cat Ba Archipelago Biosphere Reserve, Hai Phong City, Vietnam. The aims of the study are to investigate existing land...

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  • For investments to provide local benefits, mechanisms need to be in place ensuring technical and economic viability, consistency with local land use plans and taxation regimes, and transfers of assets from nonviable projects. This should also include the scope for investment and associated land governance issues in countries’ broader development strategies that identify areas or crops where investment can provide the highest benefits based on agro-ecological endowments and existing land use intensity.

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  • Biological invasions are one of the major threats to our native biodiversity. The magnitude of biodiversity losses, land degradation and productivity losses of managed and natural ecosystems due to invasive species is enormous. It has an adverse impact on our efforts to maintain biodiversity and on our conservation programs, and thus could create societal instability.

    pdf361p camchuong_1 11-12-2012 34 3   Download

  • Dynamical systems theory in mathematical biology and environmental science has attracted much attention from many scientific fields as well as mathematics. For example, “chaos” is one of its typical topics. Recently the preservation of endangered species has become one of the most important issues in biology and environmental science, because of the recent rapid loss of biodiversity in the world. In this respect, permanence or persistence, new concepts in dynamical systems theory, seem important.

    pdf188p phoebe75 01-02-2013 20 3   Download

  • Spatial analysis by way of weighted overlay was used to determine possible locations where the Boran cattle may strive. By considering elevation and annual rainfall data within the Dry Kolla agro-ecological zone of Ethiopia, one could extract a refined suitability map for the Boran. Within the Dry Kolla ‘mask’, one would extract the two variables or layers (elevation and rainfall) and conduct a simple statistical description by which the means and standard deviations are determined.

    pdf52p conduongdinhmenh 07-05-2013 23 3   Download

  • (BQ) Part 1 book "Elements of development administration" has contents: Development - Administration - An overview; ecology of development - administration; planning and development - administration; organisational aspects of development - administration.

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  • This paper argues that ecological economics is a suitable approach to address the issues of marine fishery resource use and management. In particularly, the paper will focus on biological and economic aspects of marine fishery resources that must be taken into consideration in designing fishery policies.

    pdf14p hieutinhcotu 19-06-2017 1 1   Download

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