RESUMEN. El pastoreo es una perturbación importante en los ecosistemas de pastizales, ya que altera su estructura y su funcionamiento. Las micorrizas arbusculares son interacciones cosmopolitas de estos ecosistemas, y se destacan por su incidencia elevada en las gramíneas. Las micorrizas muestran respuestas diversas y contradictorias al pastoreo (ser beneficiadas, perjudicadas o no ser afectadas). Una posible hipótesis es que cada componente del pastoreo (defoliación selectiva, deyecciones y pisoteo) diferiría en su importancia relativa al afectar la micorrización.

Abstract: Aims: The Rio de la Plata grasslands are one of the largest areas of temperate humid and sub-humid grasslands of the world. A substantial fraction of these natural grasslands are preserved in Uruguay, occupying more than 60% of the country. So far, Uruguayan grasslands have been indirectly classified using only geomorphological and edaphic criteria. An adequate description of vegetation heterogeneity is a prerequisite to study ecosystem function and to design management and conservation strategies for this region.

Abstract: Aims:The Rio de la Plata grasslands are one of the largest areas of temperate humid and sub-humid grasslands of the world. A substantial fraction of these natural grasslands are preserved in Uruguay, occupying more than 60% of the country. So far, Uruguayan grasslands have been indirectly classified using only geomorphological and edaphic criteria. An adequate description of vegetation heterogeneity is a prerequisite to study ecosystem function and to design management and conservation strategies for this region.

Abstract: Stink bugs are pests of economic importance of extensive crops (commodities) in the Neotropics, particularly in Southern South America. They are abundant, have a broad geographical distribution, and cause severe damage. Main species include the Neotropical brown-stink bug, Euschistus heros (F.), the red-banded stink bug, Piezodorus guildinii (Westwood), the Southern green stink bug, Nezara viridula (L.), the green-belly stink bugs, Dichelops furcatus (F.), and D. melacanthus (Dallas), and the brown-winged stink bug, Edessa meditabunda (F.).

Presentación. Condiciones climáticas. Evaluación de sorgo forrajero para pastoreo. Materiales y Métodos. Lista de cultivares evaluados. Resultados de sorgo forrajero para pastoreo.

Presentación. Condiciones climáticas. Evaluación de sorgo forrajero para pastoreo. Materiales y Métodos. Lista de cultivares evaluados. Resultados de sorgo forrajero para pastoreo.

ÍNDICE: I. PRESENTACIÓN p.1. II. CONDICIONES CLIMÁTICAS p.3. III. EVALUACIÓN DE SORGO PARA SILO p.7 1. MATERIALES Y MÉTODOS:1.1. LISTA DE CULTIVARES EVALUADOS p.11. 2. RESULTADOS DE SORGO PARA SILO p.13.

ÍNDICE: I. PRESENTACIÓN p.1. II. CONDICIONES CLIMÁTICAS p.3. III. EVALUACIÓN DE SORGO PARA SILO p.7 1. MATERIALES Y MÉTODOS:1.1. LISTA DE CULTIVARES EVALUADOS p.11. 2. RESULTADOS DE SORGO PARA SILO p.13.

Abstract: Sustainability science recognizes the importance of the integrated assessment of the ecological and social systems in land-use planning. However, most studies so far have been conceptual rather than empirical. We developed a framework to characterize the social-ecological systems heterogeneity according to its functioning through the identification of social?ecological functional types (SEFT).

Abstract: Sustainability science recognizes the importance of the integrated assessment of the ecological and social systems in land-use planning. However, most studies so far have been conceptual rather than empirical. We developed a framework to characterize the social-ecological systems heterogeneity according to its functioning through the identification of social?ecological functional types (SEFT).