A ‘pink tide’ swept over Latin America following Hugo Chávez's 1998 election to the presidency in Venezuela, bringing to power multiple left or center-left governments. What possibilities for and obstacles to social change were presented by their having attained power through the ballot box? This question is explored through an examination of Venezuela's agrarian reform and the promotion of agroecology within it.
Oil exploration and production activities (OEPA) and other extractive endeavors can create large-scale and permanent landscape alterations through the establishment of infrastructure features such as roads, well pads, pipelines and production facilities. These structures can lead to or increase landscape fragmentation and degradation, reduce biodiversity, disrupt important ecosystem services and attract informal settlements that further alter the landscape, deplete area resources and lead to social conflict.
The conservation of individual plant and animal species has been advanced greatly by the World Conservation Union's (IUCN) development of objective, repeatable, and transparent criteria for assessing extinction risk, which explicitly separate the process of risk assessment from priority-setting. Here we present an analogous procedure for assessing the extinction risk of terrestrial ecosystems, which may complement traditional species-specific risk assessments, or may provide an alternative when only landscape-level data are available.
To provide a quantitative spatial analysis of the riverscape (open-water bodies and their surrounding areas) of the Western Amazonian lowlands using a consistent surface of remotely sensed imagery. Taking into account the essential significance of fluvial environments for the Amazonian biota, we propose that an enhanced understanding of the Amazonian riverscape will provide new insight for biogeographical studies in the region and contribute to the understanding of these megadiverse tropical lowlands.
Es una realidad que hay contradicciones en cuanto al manejo y la tenencia de la tierra en América Latina, siendo una situación importante que impacta en las economías locales y en la vida de millones de personas. Aunque en las últimas dos décadas la mayoría de los países latinoamericanos han implementado en su legislación medidas para promover el acceso y derecho de la mujer a la tierra, siguen existiendo limitaciones que no han permitido un mayor avance hacia la equidad en la distribución de la tierra.