Results 71 to 80 of about 135 (95)
Technology and sustainability for the development of the Caldenal [PDF]
WIT Transactions on Ecology and the Environment, 2006 The Caldenal is a temperate semi-arid region located in the central part of Argentina and comprises an area of about 40,000 km. It is located in the ecotone between the cultivated humid Pampa to the east and the arid Monte to the west. The region is characterized by a highly variable annual and seasonal distribution of rainfall (400-600 mm ...
H. E. Laborde +2 more
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Grazing ecology and the conservation of the Caldenal rangelands, Argentina
Journal of Arid Environments, 2016 Abstract Grazing by domestic livestock in the Caldenal rangelands has been threatening the ecological balance of this unique biome located in the semiarid zone of central Argentina. The aim of this review was to describe and explain the floristic changes observed in grazed rangelands in the southern Caldenal, discuss management alternatives for the ...
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Range management and production on the fringe: The Caldenal, Argentina
Journal of Rural Studies, 1996Abstract North American problems in coming to terms with the management of the semi-arid Plains environment are well known. Less documented are those of Argentina's equivalent on the fringe of the Humid Pampas. Argentine agricultural aid and research has been focussed on the Humid Pampas, and little understanding of the special problems of the dry ...
Arthur Morris
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Effect of Climoedaphic Heterogeneity on Woody Plant Dominance in the Argentine Caldenal Region
Rangeland Ecology and Management, 2018Woody plant encroachment is widespread throughout drylands of the world, but rates and patterns of encroachment at the regional scale can be mediated by soil and climate. Climoedaphic properties may therefore help to explain patterns of woody plant dominance.
Brandon T Bestelmeyer, Lauren Švejcar
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Rangeland Ecology and Management, 2019
Abstract Management impacts and natural events can produce ecosystem state changes that are difficult to reverse. In such cases, a detailed understanding of drivers, thresholds, and feedback mechanisms are needed to design restoration interventions. The Caldenal ecoregion in central Argentina has undergone widespread state change, and restoration is ...
Brandon T Bestelmeyer
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Abstract Management impacts and natural events can produce ecosystem state changes that are difficult to reverse. In such cases, a detailed understanding of drivers, thresholds, and feedback mechanisms are needed to design restoration interventions. The Caldenal ecoregion in central Argentina has undergone widespread state change, and restoration is ...
Brandon T Bestelmeyer
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The Caldenal ecosystem: Effects of a prescribed burning on soil chemical properties
Arid Land Research and Management, 2016ABSTRACTBefore and after a prescribed burning, the upper 2.5 cm of soil in patches of forage, nonforage, and shrub vegetation were sampled. Then, bulk density, gravimetric moisture, pH in water, available phosphorus, exchangeable cations, cationic exchange capacity, total nitrogen, total, particulate, and mineral organic carbon contents were determined.
María Sofía Larroulet +4 more
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Acta Oecologica, 2007
Fire and grazing can modulate feedbacks between pools of carbon and nitrogen of plant and soil, altering cycles of these elements in grassland ecosystems. The magnitude of these effects may be limited by climate and by limited plasticity in tissue chemistry within a given photosynthetic pathway. We tested the hypotheses that (1) fire reduces rates of C
Thomas Boutton +2 more
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Fire and grazing can modulate feedbacks between pools of carbon and nitrogen of plant and soil, altering cycles of these elements in grassland ecosystems. The magnitude of these effects may be limited by climate and by limited plasticity in tissue chemistry within a given photosynthetic pathway. We tested the hypotheses that (1) fire reduces rates of C
Thomas Boutton +2 more
exaly +2 more sources
Applied Geography, 2012
Protected areas are critical for conservation of the world's biodiversity; however, parks isolated from their surroundings will not assure the maintenance of biodiversity and ecosystem integrity. Private lands have the potential to achieve the dual role of conserving natural habitats while providing goods and services societies need.
Mariano González-Roglich +2 more
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Protected areas are critical for conservation of the world's biodiversity; however, parks isolated from their surroundings will not assure the maintenance of biodiversity and ecosystem integrity. Private lands have the potential to achieve the dual role of conserving natural habitats while providing goods and services societies need.
Mariano González-Roglich +2 more
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SOIL DEGRADATION RELATED TO OVERGRAZING IN THE SEMI-ARID SOUTHERN CALDENAL AREA OF ARGENTINA
Soil Science, 2001The aim of the present study is to determine quantitatively the magnitude of the structural changes that occur in the soil during the degradation process affecting natural grassland in the semi-arid ecosystem of the southern area of the District of the Calden, Argentina.
María Bonita Villamil +2 more
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