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Soil Biology and Agriculture in the Tropics
The relationships between soils, microbes and humans are of crucial relevance in the tropics, where plant stress and microbial activity are exacerbated. This volume of Soil Biology presents the living component of tropical soils, showing how it is shaped by environmental conditions and emphasizing its dramatic impact on human survival and well-being. Following an introduction to the specificities of tropical soils and of their microbial communities, the biological aspects of soil management are examined, dealing with land use change, conservation and slash-and-burn agriculture, the restoration of hot deserts, agroforestry and paddy rice cultivation. As they are of particular relevance for tropical agriculture, symbioses of plants and microbes are thoroughly covered, as are the biodegradation of pesticides and health risks associated with wastewater irrigation. Lastly, traditional soil knowledge is discussed as a key to our sustainable presence in this world.
A Systems Approach to Agroecology
As agroecology gains momentum in the international research-for-development arena, there is an urgent need for methods and tools to support the codesign and evaluation of agroecological systems and their transitions. The social and ecological complexity of agroecosystems, their dynamics, uncertainties and sustainability, calls for a holistic, systemic approach to agroecology. As such, several questions arise for example: how do we deal with heterogeneity, landscapes, biodiversity or learning processes in agroecosystems analysis? How do we categorise diversity or analyse trade-offs in social-ecological interactions? How do we conceptualise, codesign and monitor agroecological transitions? This book sets out to answer these questions by building on the valuable ‘classics’ in agroecology. The book presents a systems perspective that underpins a combination of methodologies, ranging from participatory tools and field observations to mathematical simulation modelling. Researchers, advanced students and transdisciplinary practitioners will find in this book insights and methods to design research and (co-) innovation processes to foster agroecological transitions.
Phosphorus in Agroforestry Systems
A zona da mata esta situada no dominio morfologico da Mata Atlantica, na regiao sudeste de Minas Gerais, Brasil, Este dominio acompanha a costa brasileira de norte a sul e esta entre os cinco dos 25 "pontos quentes" da biodiversidade, que ssao as areas de maior biodiversidade vegetal e animal e mais ameaçadas do planeta. Originalmente a Zona da Mata era coberta por florestas, restando atualmente cerca de 7.5% da cobertura original. Os agroecosistemas que se instalaram na regiao apresentam produtividade decrescente devido a intensificaçao do uso do solo, utilizando muitas vezes manejo inadequado. Em 1993, agricultores e pesquisadores, buscando alternativas agricolas mais sustentaveis inicia...
Proceedings
This international symposium featured three interconnected thematic foci of interdisciplinary research. They focussed on the changes in the extent and intensity of agricultural and forest land use in tropical forest margins and their implications for rural development and for conservation of natural resources such as biodiversity, soils and water. The symposium took place in Goettingen. Almost 130 international authors have contributed a short abstract and their adress.
Para uma crítica do presente
Partindo da invasão da FFCL-USP - a Maria Antônia - em 1968, Irene Cardoso faz uma abordagem sensível e precisa dos fatos que marcaram uma geração e das possibilidades de aproximação com o passado e com os campos da subjetividade.
Forests and Society
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Anais do IV Congresso Brasileiro de Rochagem
Artigos científicos relacionados ao tema dos remineralizadores de solo.
Diplomatic List
Directory of foreign diplomatic officers in Washington.
CCC - Comando de Caça aos Comunistas
Em um contexto de exploração do "perigo vermelho", um ano antes do golpe que instauraria a ditadura que perduraria por 21 anos, estudantes de tradicionais faculdades paulistas, amparados nas premissas anticomunistas, se reúnem para formar um grupo que se tornaria conhecido como o Comando de Caça aos Comunistas. O grupo, por meio de seus integrantes, passa, então, a atuar dentro do ambiente universitário, influenciando a dinâmica da política estudantil e com a escalada da repressão, em 1968, os atos ultrapassam os muros das universidades passando a atuar, inclusive, no aparelho repressivo, deixando sua assinatura nas violações aos direitos humanos ocorridas no período. Ao estudar ...
