Wood Specific Gravity Variability in Ceiba Pentandra

We examined the wood specific gravity variability in Ceiba pentandra trees from four Costa Rican life-zones and a moist tropical forest in Sierra Leone, West Africa. Trees from the African site averaged higher wood specific gravity than those occurring at two high-rainfall sites in Costa Rica. However, the high degree of variability within sites reduced our capacity to detect environmental and/or genetic differences among the sites. Higher intensity field samples, and/or provenance testing under specific environmental conditions, are recommended to help clarify the sources of this variation

Guidelines for integrating the environmental dimension into rural road programmes

Fra NORAGRIC.Roads, by facilitating movement of people, commodities, services and information, affect society in a multitude of ways. A single road may initiate a rural settlement's transition from a subsistence toa trade economy. A road penetrating a previously inaccessible wilderness area may provide opportunities for land development and small industry, but may simultaneously promote massive depletion of valuable natura! ecosystems. Road networks exercise a direct and profound influence on patterns of population clustering and dispersal

Pastoralists' Conceptions of Poverty: An Analysis of Traditional and Conventional Indicators from Borana, Ethiopia

Summary We examine the traditional wealth ranking system of Borana pastoralists in Ethiopia. We investigate the proximity of conventional poverty indicators to the traditional rankings, revealing the relative lack of proximity of income and expenditure indicators. An examination of the poverty rates generated by different indicators and poverty lines reveals that conventional measures produce poverty rates that are significantly higher than traditional rankings and measures based on herd size. Poverty diagnosis among pastoralists such as the Borana, in order to generate appropriate prescriptions, should to a greater extent rely on asset-based indicators; these should ideally be complemented by qualitative approaches.Africa Ethiopia indicators pastoralism poverty

Privatisation and liberalisation in the agricultural sector : an examination of processes and outcomes in three African cases

This Noragric Report was commissioned by the Norwegian Agency for Development Cooperation (NORAD) to Noragri

Guidelines for integrating the environmental dimension into rural road programmes

Roads, by facilitating movement of people, commodities, services and information, affect society in a multitude of ways. A single road may initiate a rural settlement's transition from a subsistence toa trade economy. A road penetrating a previously inaccessible wilderness area may provide opportunities for land development and small industry, but may simultaneously promote massive depletion of valuable natura! ecosystems. Road networks exercise a direct and profound influence on patterns of population clustering and dispersal

Fronteiras do Pensamento

Na conferência "Educação no Século XXI", o psicólogo norte americano Howard Gardner falou sobre sua teoria das Inteligências Múltiplas