Miguel A. Altieri

Learn More
Increasingly research suggests that the level of internal regulation of function in agroecosystems is largely dependent on the level of plant and animal biodiversity present. In agroecosystems, biodiversity performs a variety of ecological services beyond the production of food, including recycling of nutrients, regulation of microclimate and local(More)
A strategy is suggested for in situ conservation of crop genetic resources whereby conservation efforts are linked to rural development projects in Third World countries. We describe development projects that emphasize preservation of traditional farming systems and succeed in sustaining production by relying on the maintenance of biological and genetic(More)
The realization of the contribution of peasant agriculture to food security in the midst of scenarios of climate change, economic and energy crisis, led to the concepts of food sovereignty and agroecologically based production systems to gain much attention in the developing world in the last two decades. New approaches and technologies involving(More)
During 1996 and 1997, two adjacent 2.5 has organic vineyard blocks (A and B) were monitored to assess the distributional and abundance patterns of the Western grape leafhopper Erythroneura elegantula Osborn (Homoptera: Cicadellidae) and its parasitoid Anagrus epos Girault (Hymenoptera: Mymaridae), Western flower thrips Frankliniella occidentalis (Pergande)(More)
Biotechnology companies often claim that genetically modified organisms (GMOs) --specifically genetically altered seeds -are essential scientific breakthroughs needed to feed the world, protect the environment, and reduce poverty in developing countries. The Consultative Group on International Agricultural Research (CGIAR) and its constellation of(More)
Enhancing Crop Productivity via Weed Suppression in Organic No-Till Cropping Systems in Santa Catarina, Brazil Miguel A. Altieri a , Marcos A. Lana b , Henrique V. Bittencourt c , André S. Kieling d , Jucinei J. Comin d & Paulo E. Lovato d a College of Natural Resources, University of California, Berkeley, California, USA b Leibniz Centre for Agricultural(More)
OBJECTIVE To compare treatment of ongoing seizures using intramuscular (IM) midazolam versus intravenous (IV) diazepam. DESIGN Controlled clinical trial. PATIENTS Children with motor seizures of at least 10 minutes' duration. MAIN OUTCOME MEASURES Time to cessation of seizures. RESULTS Twenty-four patients were enrolled (13 midazolam, 11 diazepam).(More)
Thirty-five percent of global production from crops including at least 800 cultivated plants depend on animal pollination. The transformation of agriculture in the past half-century has triggered a decline in bees and other insect pollinators. In North America, losses of bee colonies have accelerated since 2004, leaving the continent with fewer managed(More)
In northwestern Portugal, peasants have developed complex vineyard (Vitis vinifera) systems comprising agroforests composed of host trees, vines, annual crops and in some cases animals. Until recently these vineyards suffered very few pest problems and received relatively low pesticide loads. In the last few years, new policy and market forces have prompted(More)