INVESTIGADORES
ROSTAGNO Cesar Mario
artículos
Título:
Effects of soil degradation on infiltration rates in grazed semiarid rangelands
Autor/es:
CHARTIER, M., C.M ROSTAGNO Y G. PAZOS
Revista:
JOURNAL OF ARID ENVIRONMENTS
Editorial:
ACADEMIC PRESS LTD-ELSEVIER SCIENCE LTD
Referencias:
Año: 2011 vol. 75 p. 666 - 671
ISSN:
0140-1963
Resumen:
In grazed semiarid ecosystems, considerable spatial variability in soil infiltration exists as a result of
vegetation and soil patchiness. Despite widespread recognition that important interactions and feedbacks
occur between vegetation, runoff and erosion, currently there is only limited quantitative information
on the control mechanisms that lead to differences in infiltration from different vegetation types.
In this paper, we determine (i) the relationship between vegetation and soil surface characteristics and
(ii) the soil infiltration rate by using rainfall simulations on runoff plots (0.60 1.67 m) in three plant
communities of northeastern Patagonia: grass (GS), degraded grass with scattered shrubs (DGS), and
degraded shrub steppes (DSS). Our results clearly indicate that vegetation and soil infiltration are closely
coupled. Total infiltration was significantly higher in the GS (69.6 mm) compared with the DGS and DSS
(42.9 and 28.5 mm, respectively). In the GS, soil infiltration rate declined more slowly than the others
communities, reaching a terminal infiltration rate significantly greater (57.7 mm) than those of DGS and
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
communities, reaching a terminal infiltration rate significantly greater (57.7 mm) than those of DGS and
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
(42.9 and 28.5 mm, respectively). In the GS, soil infiltration rate declined more slowly than the others
communities, reaching a terminal infiltration rate significantly greater (57.7 mm) than those of DGS and
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
communities, reaching a terminal infiltration rate significantly greater (57.7 mm) than those of DGS and
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
coupled. Total infiltration was significantly higher in the GS (69.6 mm) compared with the DGS and DSS
(42.9 and 28.5 mm, respectively). In the GS, soil infiltration rate declined more slowly than the others
communities, reaching a terminal infiltration rate significantly greater (57.7 mm) than those of DGS and
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
communities, reaching a terminal infiltration rate significantly greater (57.7 mm) than those of DGS and
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
(42.9 and 28.5 mm, respectively). In the GS, soil infiltration rate declined more slowly than the others
communities, reaching a terminal infiltration rate significantly greater (57.7 mm) than those of DGS and
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
communities, reaching a terminal infiltration rate significantly greater (57.7 mm) than those of DGS and
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
communities of northeastern Patagonia: grass (GS), degraded grass with scattered shrubs (DGS), and
degraded shrub steppes (DSS). Our results clearly indicate that vegetation and soil infiltration are closely
coupled. Total infiltration was significantly higher in the GS (69.6 mm) compared with the DGS and DSS
(42.9 and 28.5 mm, respectively). In the GS, soil infiltration rate declined more slowly than the others
communities, reaching a terminal infiltration rate significantly greater (57.7 mm) than those of DGS and
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
communities, reaching a terminal infiltration rate significantly greater (57.7 mm) than those of DGS and
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
(42.9 and 28.5 mm, respectively). In the GS, soil infiltration rate declined more slowly than the others
communities, reaching a terminal infiltration rate significantly greater (57.7 mm) than those of DGS and
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
communities, reaching a terminal infiltration rate significantly greater (57.7 mm) than those of DGS and
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
coupled. Total infiltration was significantly higher in the GS (69.6 mm) compared with the DGS and DSS
(42.9 and 28.5 mm, respectively). In the GS, soil infiltration rate declined more slowly than the others
communities, reaching a terminal infiltration rate significantly greater (57.7 mm) than those of DGS and
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
communities, reaching a terminal infiltration rate significantly greater (57.7 mm) than those of DGS and
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
(42.9 and 28.5 mm, respectively). In the GS, soil infiltration rate declined more slowly than the others
communities, reaching a terminal infiltration rate significantly greater (57.7 mm) than those of DGS and
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
communities, reaching a terminal infiltration rate significantly greater (57.7 mm) than those of DGS and
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
In this paper, we determine (i) the relationship between vegetation and soil surface characteristics and
(ii) the soil infiltration rate by using rainfall simulations on runoff plots (0.60 1.67 m) in three plant
communities of northeastern Patagonia: grass (GS), degraded grass with scattered shrubs (DGS), and
degraded shrub steppes (DSS). Our results clearly indicate that vegetation and soil infiltration are closely
coupled. Total infiltration was significantly higher in the GS (69.6 mm) compared with the DGS and DSS
(42.9 and 28.5 mm, respectively). In the GS, soil infiltration rate declined more slowly than the others
communities, reaching a terminal infiltration rate significantly greater (57.7 mm) than those of DGS and
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
communities, reaching a terminal infiltration rate significantly greater (57.7 mm) than those of DGS and
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
(42.9 and 28.5 mm, respectively). In the GS, soil infiltration rate declined more slowly than the others
communities, reaching a terminal infiltration rate significantly greater (57.7 mm) than those of DGS and
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
communities, reaching a terminal infiltration rate significantly greater (57.7 mm) than those of DGS and
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
coupled. Total infiltration was significantly higher in the GS (69.6 mm) compared with the DGS and DSS
(42.9 and 28.5 mm, respectively). In the GS, soil infiltration rate declined more slowly than the others
communities, reaching a terminal infiltration rate significantly greater (57.7 mm) than those of DGS and
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
communities, reaching a terminal infiltration rate significantly greater (57.7 mm) than those of DGS and
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
(42.9 and 28.5 mm, respectively). In the GS, soil infiltration rate declined more slowly than the others
communities, reaching a terminal infiltration rate significantly greater (57.7 mm) than those of DGS and
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
communities, reaching a terminal infiltration rate significantly greater (57.7 mm) than those of DGS and
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
communities of northeastern Patagonia: grass (GS), degraded grass with scattered shrubs (DGS), and
degraded shrub steppes (DSS). Our results clearly indicate that vegetation and soil infiltration are closely
coupled. Total infiltration was significantly higher in the GS (69.6 mm) compared with the DGS and DSS
(42.9 and 28.5 mm, respectively). In the GS, soil infiltration rate declined more slowly than the others
communities, reaching a terminal infiltration rate significantly greater (57.7 mm) than those of DGS and
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
communities, reaching a terminal infiltration rate significantly greater (57.7 mm) than those of DGS and
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
(42.9 and 28.5 mm, respectively). In the GS, soil infiltration rate declined more slowly than the others
communities, reaching a terminal infiltration rate significantly greater (57.7 mm) than those of DGS and
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
communities, reaching a terminal infiltration rate significantly greater (57.7 mm) than those of DGS and
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
coupled. Total infiltration was significantly higher in the GS (69.6 mm) compared with the DGS and DSS
(42.9 and 28.5 mm, respectively). In the GS, soil infiltration rate declined more slowly than the others
communities, reaching a terminal infiltration rate significantly greater (57.7 mm) than those of DGS and
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
communities, reaching a terminal infiltration rate significantly greater (57.7 mm) than those of DGS and
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
(42.9 and 28.5 mm, respectively). In the GS, soil infiltration rate declined more slowly than the others
communities, reaching a terminal infiltration rate significantly greater (57.7 mm) than those of DGS and
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
communities, reaching a terminal infiltration rate significantly greater (57.7 mm) than those of DGS and
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
DSS (25.7 and 12.9 mm, respectively). The high rate of water losses via overland-flow may limit the
possibilities for grass seedling emergence and establishment and favor the persistent dominance of
shrubs
possibilities for grass seedling emergence and establishment and favor the pers