The challenge of rangeland degradation in a temperate semiarid region of Argentina: The Caldenal

  title={The challenge of rangeland degradation in a temperate semiarid region of Argentina: The Caldenal},
  author={Osvaldo Alberto Fernandez and Marlon Gil and Roberto Alejandro Distel},
  journal={Land Degradation \& Development},
The phytogeographical region known as the Caldenal comprises an area of approximately 10 million ha in the central temperate part of Argentina (35–40° S, 62–66° W). The original physiognomy of the vegetation consisted of a gramineous steppe with isolated shrubs and trees. Rangeland deterioration was initiated in the early‐1900s with the introduction of livestock by the colonizing European ranchers. After a few decades of inappropriate use, the Caldenal proved to be a fragile environment. Major… 
Arid and Semiarid Rangelands of Argentina
Two thirds of continental Argentina are arid and semiarid rangelands. These rangelands include five phytogeographic regions: (1) Puna, (2) Chaco Occidental, (3) Monte, (4) Caldenal, and (5)
Twenty-five Years of Fire Research in the Temperate Semi-arid Rangelands of Central Argentina: A Synthesis
Abstract Fire is a natural part in the semiarid zone of central Argentina (Caldenal). Historically, it had an important ecological role in this ecosystem on the species composition, vegetation
The invasive species most represented at local, regional or state scale studies were Acroptilon repens, Centaurea solstitialis, Eleagnus angustifolia, Medicago minima, Chondrilla juncea, Dipsacus sativus and Sorghum halepense.
Unpalatable perennial grass invasion in central-east Argentina native grasslands: processes, implications and recovery.
. In temperate semiarid central-east Argentina, unpalatable perennial grasses (UPG) have been steadily invading native grasslands formerly dominated by palatable perennial grasses (PPG). The
Summer habitat use and activity patterns of wild boar Sus scrofa in rangelands of central Argentina
This study is the first landscape-scale research carried out in an agricultural landscape in Argentina and the first one based on camera-trapping data and contributes valuable information that could be used to design strategies to reduce wild boar population or to minimize the damage caused by this invasive species in Argentina.
Consequences of anthropogenic disturbances on soil seed bank diversity and nurse shrub effect in a semiarid rangeland
What is the effect of common land use histories on the diversity, richness, spatial distribution and abundance of the soil seed bank (SSB)? Does the effect change between different microsites under
Responses of vegetation to different land-use histories involving grazing and fire in the North-east Patagonian Monte, Argentina
In arid and semiarid lands around the world, vegetation is distributed in patches within a bare soil matrix. Vegetation in the North-east Patagonian Monte, Argentina is a shrubland steppe, and
Species-Specific Responses of Carnivores to Human-Induced Landscape Changes in Central Argentina
The results demonstrate that the impact of human activities spans across this guild of carnivores and that species-specific responses appear to be mediated by ecological and behavioral attributes.
Factores asociados a la invasión de pajas en bosques de la región semiárida central argentina
(Palabras clave: pastoreo, recursos del suelo, palatabilidad, estrategias de uso de recursos) ABSTRACT. Factors associated to invasion by non-palatable grasses in Argentinean semi-arid forest: In


Soil phytoliths as evidence for species replacement in grazed rangelands of central Argentina
The hypothesis of the dominance of preferred mid-grasses in the pristine condition in rangelands of central Argentina is supported, and that a shift towards the dominate of preferred short-grass and avoided grasses has occurred in its present disturbed condition.
Herbivory in arid and semi - arid regions in argentina
  • E. Bucher
  • Environmental Science, Geography
  • 1987
Terrestrial herbivory in the Chaco, Monte and Patagonia natural regions of Argentina shows similar patterns to equivalent regions of North America, as well as distinctive features that might be linked to evolutionary interactions with the diverse fauna of large herbivores which became extinct during the Pleistocene.
Towards an increased and sustainable production in semi-arid rangelands of central Argentina: two decades of research☆
Abstract The Caldenal or Southern Espinal is a temperate, semi-arid region covering about 40,000 km 2 in central Argentina. Cattle raising on natural vegetation is the major economic activity in this
Diet selection by goats on a semi-arid shrubland in central Argentina
The objective of this study was to determine diet selection by goats on a semi-arid shrubland in the central part of Argentina. Ten goats grazed on a pasture for 10-days periods in winter, spring,
Silica bodies in perennial grasses of the southern District of the Caldén in central Argentina
Silica bodies found in blades, sheaths and stems of eleven perennial grasses that are abundant in the Caldenal rangelands of central Argentina are described and classified to help characterise the epidermis of these species in previous studies.
Shrub Invasions of North American Semiarid Grasslands
The composition and structure of the semiarid or desert grasslands of southwestern North America have changed over the past 150 years and the causes of changes that have led to the present woody-brushy composition of these semiarids has been difficult to determine.
Effects of selective defoliation on the competitive interaction between palatable and unpalatable grasses native to a temperate semi-arid grassland of Argentina
The hypothesis that selective defoliation of palatable species confers a competitive advantage to unpalatable species, which could ultimately lead to replacement in grasslands is supported.
Effect of fire on grasses in central semi-arid Argentina
Study of the effects of different fire intensities and season of burning on six important grass species in the Caldenal found that Stipa gynerioides and S. speciosa, two grasses not readily consumed by cattle, were sensitive to fire severity.