La cuenca del río Los Puestos, área considerada en este trabajo, se sitúa en el extremo norte del departamento de Ambato, Catamarca, Argentina. Sus límites están establecidos por las formaciones pampeanas Ambato-Manchao (4.050 m.s.n.m.) al oeste, y por la sierra Graciana-Balcozna (1.850 m.s.n.m.) al este. En tanto, su límite sur lo constituye el valle de Catamarca y, hacia el norte, los Altos de Singuil. En la llanura aluvial del fondo del valle, corre de norte a sur el río Los Puestos, que nace en los Altos de Singuil, a 1.250 m.s.n.m. En este escenario, a partir del siglo VI d.C.

Se compararon dos manejos pratenses: pastoreo con vacunos y pastoreo con ovejas, en un suelo volcánico, del centro-sur de Chile, con los valores bioindicadores de Ellenberg establecidos para malezas europeas, que forman esas praderas. Se comprobó que el pastoreo con ovinos degrada el suelo y la cubierta vegetal mucho más que el pastoreo con bovinos, lo que se corresponde con las diferencias vegetacionales y edáficas establecidas por un estudio anterior mediante análisis edáficos y fitosociológicos.

In the last three decades, the Borana rangelands of Southern Ethiopia have been deteriorating due to unsustainable utilization. This paper analyses the changes in indigenous range management among the Borana pastoralists and the role of development interventions.The fieldwork was carried out during 2000-2002, following a severe drought. Two locations, Dida Hara and Web, that once were part of a large grazing system with seasonally distinct herd movements, experienced differences in development interventions.

Agistment is the practice of temporarily moving stock between properties, and is used by pastoralists both to strategically develop their enterprises and as a response to environmental heterogeneities such as variation in rainfall. This paper considers the agistment market in the northern Australian rangelands using the 'market failure framework'. This form of economic analysis identifies failings in a market, thus, provides a rigorous basis for designing interventions intended to improve market performance.

In the last 100 years or so, desertification, degradation, and woody plant encroachment have altered huge tracts of semiarid rangelands. It is expected that the changes thus brought about significantly affect water balance in these regions; and in fact, at the headwater-catchment and smaller scales, such effects are reasonably well documented. For larger scales, however, there is surprisingly little documentation of hydrological change.

In European mountain areas, shrub encroachment resulting from farmland abandonment is most often managed by mechanical operations such as roller chopping or controlled burning, which have proved to be ineffective and unsustainable. Recent agroecological findings highlight the potential impact of grazing on long-term shrub dynamics. We thus explored the potential contribution of livestock farms to the management of shrub encroachment.

The potential of grazing lands to sequester carbon has been investigated in different terrestrial environments but the results are often inconclusive. Our study examined the soil organic carbon (SOC) and soil microbial biomass carbon (MBC) contents inside and outside four grazing exclosures that had been established more than four decades ago in the semi-arid sagebrush steppe of Wyoming.