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Dissolved organic nitrogen as an indicator of livestock impacts on soil biochemical quality

LandLibrary Resource
Journal Articles & Books
декабря, 2011

Soil degradation in the Mediterranean and other arid and semi-arid regions of the world is caused mainly by cultivation and grazing. A consequence of de-vegetation due to overgrazing has been a decrease in organic matter (litter) input to soil and a decrease of aggregate size and stability making soils more susceptible to erosion and to organic matter losses.

Long-term water balance and conceptual model of a semi-arid mountainous catchment

LandLibrary Resource
Journal Articles & Books
декабря, 2011
United States of America

Long-term water balance investigations are needed to better understand hydrologic systems, especially semi-arid mountainous catchments. These systems exhibit considerable interannual variability in precipitation as well as spatial variation in snow accumulation, soils, and vegetation.

Desertification and livestock grazing: The roles of sedentarization, mobility and rest

LandLibrary Resource
Journal Articles & Books
декабря, 2011

Pastoralism is an ancient form of self-provisioning that is still in wide use today throughout the world. While many pastoral regions are the focus of current desertification studies, the long history of sustainability evidenced by these cultures is of great interest.

Using Normalized Difference Vegetation Index to Estimate Carbon Fluxes from Small Rotationally Grazed Pastures

LandLibrary Resource
Journal Articles & Books
декабря, 2011
United States of America

Satellite-based normalized difference vegetation index (NDVI) data have been extensively used for estimating gross primary productivity (GPP) and yield of grazing lands throughout the world.

Desertification and livestock grazing: The roles of sedentarization, mobility and rest

LandLibrary Resource
Journal Articles & Books
декабря, 2011

Pastoralism is an ancient form of self-provisioning that is still in wide use today throughout the world. While many pastoral regions are the focus of current desertification studies, the long history of sustainability evidenced by these cultures is of great interest.

Effects of grazing exclusion on the spatial variability of subalpine plant communities: A multiscale approach

LandLibrary Resource
Journal Articles & Books
декабря, 2011

The fine-scale spatial structure of plant communities is a key component for understanding the dynamics in vegetation following changes in land management but needs to be assessed at an appropriate scale. We studied the response of plant diversity and spatial variability of species and trait composition to grazing vs.

Residue Potential of Norsesquiterpene Glycosides in Tissues of Cattle Fed Austral Bracken (Pteridium esculentum)

LandLibrary Resource
Journal Articles & Books
декабря, 2011

Austral bracken, Pteridium esculentum, occurs widely in Australian grazing lands and contains both the known carcinogen ptaquiloside and its hydroxy analogue, ptesculentoside, with untested carcinogenic potential. Calves were fed a diet containing 19% P.

Morphology and phenology of Scabiosa columbaria from mown and grazed habitats – Results of a simulation experiment

LandLibrary Resource
Journal Articles & Books
декабря, 2011
Europe

We analysed the morphology and phenology of Scabiosa columbaria in relation to grassland management by mowing and grazing. We selected 12 populations from mown and grazed calcareous grassland in six regions of central Europe.

Simple models of carbon and nitrogen cycling in New Zealand hill country pastures: exploring impacts of intensification on soil C and N pools

LandLibrary Resource
Journal Articles & Books
декабря, 2011
New Zealand

Concerns about climate change and water quality make it necessary to have a better understanding of the cycling of carbon (C) and nitrogen (N) within landscapes. In New Zealand, pastoral farming on hill country is a major land use, and there is little information available at a landscape level on the cycling of C and N within these systems, particularly the impacts of land use intensification.