Grazing Intensity and Spatial Heterogeneity in Bare Soil in a Grazing-Resistant Grassland
نویسندگان
چکیده
منابع مشابه
Impact of Grazing on Soil Biota in a Mediterranean Grassland
The effect of cattle grazing on the soil nematode and protozoan communities, and on microbial biomass, was measured in Israel’s northern highlands. Three grazing areas were compared: (1) with 1 1 cow ha 1 y ; (2) 0 55 cow ha 1 y ; and (3) control—no grazing for almost 18 years. Soil samples were collected from the upper 10 cm level of each area (n1⁄4 24), in autumn, before the onset of the rain...
متن کاملSpatial heterogeneity and irreversible vegetation change in semiarid grazing systems.
Recent theoretical studies have shown that spatial redistribution of surface water may explain the occurrence of patterns of alternating vegetated and degraded patches in semiarid grasslands. These results implied, however, that spatial redistribution processes cannot explain the collapse of production on coarser scales observed in these systems. We present a spatially explicit vegetation model...
متن کاملEffects of cattle grazing timing and intensity on soil seed banks and regeneration strategies in a Mediterranean grassland
The relationship between the soil seed bank at the onset of the growing season and the structure of the ensuing vegetation under grazing was investigated in an eastern Mediterranean grassland. Species responses to two contrasting cattle grazing regimes were studied through plant trait analyses. Traits included plant size, phenology, seed size and germination fraction. Changes in species composi...
متن کاملImpacts of Grazing Intensity and Plant Community Composition on Soil Bacterial Community Diversity in a Steppe Grassland
Soil bacteria play a key role in the ecological and evolutionary responses of agricultural ecosystems. Domestic herbivore grazing is known to influence soil bacterial community. However, the effects of grazing and its major driving factors on soil bacterial community remain unknown for different plant community compositions under increasing grazing intensity. Thus, to investigate soil bacterial...
متن کاملImpacts of grazing intensity on denitrification and N2O production in a semi-arid grassland ecosystem
N2O production from denitrification in soils contributes to the enhanced greenhouse effect and the destruction of the stratospheric ozone. Ungulate grazing affects denitrification and the production of N2O. The short-term effect of grazing on denitrification and N2O production has been examined in several grassland ecosystems. However, the effects of long-term grazing have rarely been studied. ...
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ژورنال
عنوان ژورنال: Rangeland Ecology & Management
سال: 2012
ISSN: 1550-7424
DOI: 10.2111/rem-d-11-00005.1