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Grass-to-tree facilitation in an arid grazed environment (Aïr Mountains, Sahara)

LandLibrary Resource
Journal Articles & Books
Dezembro, 2009
Níger

The scarcity of tree regeneration is a major concern for the long-term conservation of tree cover in the Aïr-Ténéré Nature Reserve (Sahara, Niger), and the causes of this shortage are poorly understood. We raised the hypothesis that livestock pressure is a key-factor in the mortality of tree seedlings and that facilitation processes among plants may enhance tree regeneration.

Does the strength of facilitation by nurse shrubs depend on grazing resistance of tree saplings

LandLibrary Resource
Journal Articles & Books
Dezembro, 2009

Facilitation of tree regeneration by nurse shrubs that offer protection against large herbivores is an important driver of wood-pasture dynamics. Here we asked whether the response to facilitation by nurse shrubs depends on the grazing resistance of the protégé saplings.

Effects of grazing exclusion on species composition in high-altitude grasslands of the Central Alps

LandLibrary Resource
Journal Articles & Books
Dezembro, 2009
Áustria

Our study examines the effects of grazing exclusion on low-productive subalpine and alpine grasslands of the Central Alps (UNESCO Biosphere Park Gurgler Kamm, Obergurgl, Austria). A long-term exclusion experiment was established in 2000 in the subalpine, the lower, and the upper alpine zone.

Phytogenic resources of halophytes of Central Asia and their role for rehabilitation of sandy desert degraded rangelands

LandLibrary Resource
Journal Articles & Books
Dezembro, 2009
Ásia Central

Based on soil characteristics, watertable level, mineral composition of plant biomass, morphological/reproductive traits and carbon discrimination values, a new concept for the classification of halophytes was developed. Six main groups of halophytes have been described within the desert flora of Central Asia.

Quantifying soil organic carbon in forage-based cow-calf congregation-grazing zone interface

LandLibrary Resource
Journal Articles & Books
Dezembro, 2009

Recent concerns about global warming due to accumulations of atmospheric CO₂ have encouraged the achievement of better understanding of the roles of animal agriculture in mitigating CO₂ emissions. Grazing can accelerate and alter the timing of nutrient transfers, and increase the amount of nutrients cycled from plant to soil.

State-and-Transition Models for Heterogeneous Landscapes: A Strategy for Development and Application

LandLibrary Resource
Journal Articles & Books
Dezembro, 2009

Interpretation of assessment and monitoring data requires information about how reference conditions and ecological resilience vary in space and time. Reference conditions used as benchmarks are often specified via potential-based land classifications (e.g., ecological sites) that describe the plant communities potentially observed in an area based on soil and climate.

Kangaroos in the rangelands: opportunities for landholder collaboration

LandLibrary Resource
Journal Articles & Books
Dezembro, 2009
Austrália

For 3 years, the Future of Australia's Threatened Ecosystems (FATE) Program has been working towards achieving multiple benefits for rangelands by applying conservation through sustainable use (CSU) approaches to the kangaroo industry. A critical component of this work is landholder involvement in kangaroo management that results in commercial gain.

From Pasture Land to Farm Plots, Triggers and Motivations for Land Use Changes in Afar, Ethiopia

LandLibrary Resource
Conference Papers & Reports
Dezembro, 2009
Etiópia

Communal land use system has existed in pastoral Afar (as in many other pastoral areas) since time of immemorial accommodating the interests of different user groups. This form of land use system, which has adapted to the harsh environment in which herders raise their livestock, enables efficient utilization of scattered pastoral resources since it accommodates constant mobility of livestock.

Soil seed bank evaluation along a degradation gradient in arid rangelands of the Somali region, eastern Ethiopia

LandLibrary Resource
Journal Articles & Books
Dezembro, 2009
Etiópia

The potential and regeneration capacity of soil seed banks in three eastern Ethiopian rangeland ecosystems (Asbuli grassland or arid grassland, Aydora open savanna or arid bush/grassland and Hurso closed savanna or arid bush land) were determined over a degradation gradient.

Land use/cover changes and their implications on rural livelihoods in the degraded environments of central Tanzania

LandLibrary Resource
Journal Articles & Books
Dezembro, 2009
Tanzania

This paper examines the changes in land use/cover types in the degraded environment of central Tanzania over the last 45 years, and how such changes have influenced agricultural and livelihoods sustainability, especially in the Irangi Hills.

Critical success factors of a whole of business extension approach for increased capacity of beef producers and improved enterprise profit and sustainability

LandLibrary Resource
Journal Articles & Books
Dezembro, 2009

The 'Research to Reality Project' assisted beef producers in the Burdekin catchment of north Queensland to develop practical responses to a range of production and grazing land management challenges. The project involved three groups of beef producers encompassing 19 enterprises, 680000ha of land and the management of 162000 cattle.