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Capacidad competitiva y tolerancia a la defoliación en Stipa clarazii, Stipa tenuis y Stipa ambiguaCompetitive ability and defoliation tolerance in Stipa clarazii, Stipa tenuis y Stipa ambigua
(Fundacion Romulo Raggio, 2006-01)
Mayores valores de tasas de crecimiento, capacidad de proliferación radical, densidad de longitud de raíces y capacidad de absorción de nutrientes se han asociado con un aumento en la adquisición de nutrientes en las ...
Regrowth capacity in relation to defence strategy in Stipa clarazii and Stipa trichotoma, native to semiarid Argentina
(Wiley, 2007-09)
Plants can defend themselves against herbivores by either avoiding or tolerating herbivory. Since avoidance mechanisms divert resources to other than growth processes, it could be expected a lower regrowth capacity in ...
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. ...
Variations in chemical composition associated with tissue aging in palatable and unpalatable grasses native to central Argentina
(Elsevier, 2005-02)
Tissue aging in unpalatable grasses appears to be associated with a rapid decay in nutritional value because grazers usually start to avoid them at early stages of maturity. The objective of the present study was to determine ...
Perennial grasses of different successional stages under various soil water regimes: do they differ in root length density?
(Interciencia, 2007-12)
La información sobre densidad de longitud de raíces (DLR) es escasa en gramíneas perennes de diferentes estados sucesionales expuestas a varios niveles hídricos del suelo. Los efectos de distintos niveles hídricos sobre ...
Direct assessment of competitive ability and defoliation tolerance in perennial grassesÉvaluation directe de la compétitivité et de la tolérance à la défoliation des graminées vivaces
(Agricultural Inst Canada, 2004-01)
Stipa clarazii is a dominant, late-seral perennial grass species under exclosure or lightly grazed rangelands in semiarid Argentina, whereas S. tenuis and S. ambigua are earlier-seral perennial tussock grasses. Recent ...
Defoliation Tolerance and Ammonium Uptake Rate in Perennial Tussock Grasses
(Society for Range Management, 2004-01)
Se ha demostrado que Stipa clarazii tiene una mayor tolerancia a la defoliación y capacidad competitiva que S. tenuis y S. ambigua, 3 especies de gramíneas perennes nativas en los pastizales naturales semiáridos del centro ...
Phytolith Assemblages in Grasses Native to Central Argentina
(Oxford University Press, 2004-12)
Background and Aims Phytolith reference collections are a prerequisite for accurate interpretation of soil phytolith assemblages aimed at reconstructing past vegetation. In this study a phytolith reference collection has ...
Perennial grasses of different successional stages under various soil water inputs: do they differ in root length density?
(Asociación Interciencia, Venezuela, 2007-03)
Information about root length density (RLD) on perennial grasses of different successional stages exposed to various soil water inputs is limited. The effects on RLD of different soil water inputs were evaluated in the ...
Effects of Defoliation at Varying Soil Water Regimes on Aboveground Biomass of Perennial Grasses
(Taylor, 2003-04)
We evaluated the effects of defoliation under varying soil water regimes on aboveground biomass of perennial grasses native to semiarid rangelands of central Argentina. The palatable species Stipa tenuis and S. clarazii ...