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Long-term avian research at the San Joaquin Experimental Range: Recommendations for monitoring and managing oak woodlands

Journal Articles & Books
Décembre, 2011
Amérique septentrionale

Experimental forests and ranges are living laboratories that provide opportunities for conducting scientific research and transferring research results to partners and stakeholders. They are invaluable for their long-term data and capacity to foster collaborative, interdisciplinary research. The San Joaquin Experimental Range (SJER) was established to develop appropriate land management practices on foothill rangelands in California. SJER has a long and rich history of avian research.

Evolution of sedentary pastoralism in south India: case study of the Kangayam grassland

Journal Articles & Books
Décembre, 2011
Inde

Kangayam grassland in the tropical region of south India has been sustainably managed for over one hundred and fifty years. In a region with meagre rainfall, growing grass is the farmers' main vocation. Between 1855 and 1881, the majority of government 'wastelands' were given on lease to farmers who organized the land into grazing paddocks and fenced with hedges of Balasmodendron berryi. Numerous wells were dug in the grazing lands to provide water for drinking to animals and to some extent for irrigation.

Evolution of sedentary pastoralism in south India: case study of the Kangayam grassland

Journal Articles & Books
Décembre, 2011
Inde

Kangayam grassland in the tropical region of south India has been sustainably managed for over one hundred and fifty years. In a region with meagre rainfall, growing grass is the farmers' main vocation. Between 1855 and 1881, the majority of government 'wastelands' were given on lease to farmers who organized the land into grazing paddocks and fenced with hedges of Balasmodendron berryi. Numerous wells were dug in the grazing lands to provide water for drinking to animals and to some extent for irrigation.

Restoration of Ecosystem Carbon Stocks Following Exclosure Establishment in Communal Grazing Lands in Tigray, Ethiopia

Journal Articles & Books
Décembre, 2011
Éthiopie

Degraded lands are common in human-influenced tropical semiarid areas, and the potential for C sequestration through rehabilitation of these areas is substantial. In this study, we investigated changes in ecosystem C stocks (ECS) after establishing exclosures on degraded communal grazing lands, and identified easily measurable biophysical and management-related factors that can be used to predict ECS restoration in the highlands of Tigray, Ethiopia. We selected replicated (n = 3) 5-, 10-, 15-, and 20-yr-old exclosures and paired each exclosure with an adjacent communal grazing land.

Does land use change affect the interactions between two dry grassland species?

Journal Articles & Books
Décembre, 2011
Allemagne

Over the last 20 years, a change in traditional land use practices has taken place in central Germany. Formerly species-rich dry grassland communities have been converted into communities with greatly reduced diversity in many places. Whereas grass species have expanded, several forbs have declined in abundance. For the present study, plant–plant interactions were assessed between the expanding grass Festuca rupicola and the forb Dianthus carthusianorum – two typical, companion grassland species – to ascertain any associated effects of land use change.

Assessing the short-term impacts of changing grazing regime at the landscape scale with remote sensing

Journal Articles & Books
Décembre, 2011
États-Unis d'Amérique

Livestock grazing is an important form of land use, affecting ecosystems worldwide. In ecoregions that evolved with low densities of large ungulates, such as those in the western United States, there is ongoing debate as to the appropriate concentrations of livestock that can be sustained. Limited landscape-scale monitoring makes it difficult to pinpoint the landscape-scale impacts of livestock on ecosystems.

Persistent Acacia savannas replace Mediterranean sclerophyllous forests in South America

Journal Articles & Books
Décembre, 2011
Chili
Amérique du Sud

Mediterranean ecosystems are global hotspots of biodiversity threaten by human disturbances. Growing evidence indicates that regeneration of Mediterranean forests can be halted under certain circumstances and that successional stages can become notoriously persistent. The Mediterranean sclerophyllous forest in central Chile is been largely transformed into savannas dominated by the invasive legume tree Acacia caven as result of interacting management and ecological factors.

typology of graziers to inform a more targeted approach for developing natural resource management policies and agricultural extension programs

Journal Articles & Books
Décembre, 2011
Australie

The use of landholder typologies to assist in the development of natural resource management (NRM) policies and agricultural extension programs has increased considerably in the past decade. In this paper we explore the potential of developing a typology of graziers to more effectively tailor policies and programs with the aim of improving land management outcomes.

Reducing contention amongst organisations dealing with commercially valuable but invasive plants: The case of buffel grass

Journal Articles & Books
Décembre, 2011
Australie

Policy development can fail when organisations tasked with managing contentious species for different outcomes are at odds. Buffel grass (Cenchrus ciliaris L. syn. Pennisetum ciliare L. Link) has been planted worldwide and is a valuable pasture grass but it is contentious because of its environmental impacts. Due to this contention, government agencies in Australia have been reticent about developing policy for sustainable management of buffel grass.

Improved modeling of soil organic carbon in a semiarid region of Central East Kazakhstan using EPIC

Journal Articles & Books
Décembre, 2011
Kazakhstan

Inappropriate land use and soil mismanagement produced wide-scale soil and environmental degradation to the short-grass steppe ecosystem in the semiarid region of central east Kazakhstan. A limitation for determining the impacts of land use changes on soil organic carbon (SOC) is the dearth of information on SOC stocks under the predominant land uses in the region.