Buscar
Mostrando ítems 31-40 de 292
Assessing Fire Severity in Semiarid Environments with the DNBR and RDNBR Indices
(Global Journals, 2019-03-31)
Available remote sensing historical Landsat TM images allow identifying of first order effects of wildfires also in huge and inaccessible regions. In this paper the usefulness of the best known satellitederived severity ...
Temporal and spatial variation in the soil seed bank of Nassella trichotoma (serrated tussock) in its native range
(Csiro Publishing, 2021-01-21)
Serrated tussock (Nassella trichotoma (Nees) Hack. ex Arechav) is an unpalatable grass species that has been expanding in its native range and invading non-native ranges. In this study in its natural environment, we aimed ...
Bud viability in perennial grasses: Water stress and defoliation effects
(Society for Range Management, 2002-03)
Effects of the timing and frequency of defoliation under different levels of soil water availability were evaluated on bud metabolic activity and subsequent outgrowth in the desirable (i.e., palatable) Stipa clarazii Ball. ...
Effects of fire severity on early recovery of Patagonian steppes
(Csiro Publishing, 2013-08)
Fire severity influences the recovery and biodiversity of plant communities. We compared the early post-fire recovery of plant functional groups in two sites (one burnt with high severity and one with low severity) in the ...
Mechanical control of shrubs in a semiarid region of Argentina and its effect on soil water content and grassland productivity
(Elsevier Science, 2004-08)
Mechanical shrub control with roller choppers can be an inexpensive and non contaminant system for increasing grassland production in rangelands dry regions. A field experiment was carried out between October 1997 and ...
Temperature sensitivity of carbon decomposition in soil aggregates along a climatic gradient
(Sociedad Chilena de la Ciencia del Suelo, 2016)
© 2016, Sociedad Chilena de la Ciencia del Suelo. All rights reserved.Global warming affects the carbon (C) pools in terrestrial ecosystems, accelerating biological processes that feed back into the phenomenon of climate ...
Effect of grazing and drought on seed bank in semiarid patchy rangelands of northern patagonia, Argentina
(University of Chicago Press, 2019-03-28)
Premise of research. The soil seed bank (SSB) plays a critical role in vegetation regeneration after stress and/or disturbance events. Here, we analyzed how drought and grazing influence the SSB of shrub patches and ...
Effect of grazing and drought on seed bank in semi-arid patchy rangelands of northern Patagonia, Argentina
(University of Chicago Press, 2019)
Beef production and net revenue variability from grazing systems on semiarid grasslands of North America
(Elsevier Science, 2019-02)
Sustainability of ranches and rural economies in the Great Plains of western North America is contingent on the economic vitality of beef production in a changing climate. Our objective was to measure and compare the ...