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Mostrando ítems 31-40 de 2004
Effect of defoliation frequency on Rytidosperma virescens plants and arbuscular mycorrhizal fungi colonization
(Elsevier, 2022-06-09)
Rangelands provide different ecosystem services to satisfy human needs. Although grazing management in southern Patagonia is mostly characterized by extensive continuous grazing, rotational grazing management may improve ...
Grazing increases evapotranspiration without the cost of lowering soil water storages in arid ecosystems
(John Wiley & Sons Inc, 2017-09)
Grazing is the predominant land use practice in arid environments; however, there are relatively few studies of grazing effects on ecosystem functioning. We assessed the impact of grazing on soil moisture, evapotranspiration ...
Oxide nanolayers in stratified samples studied by X-ray resonant Raman scattering at grazing incidence
(Hindawi Publishing Corporation, 2015-08)
X-ray resonant Raman scattering is applied at grazing incidence conditions with the aim of discriminating and identifying chemical environment of iron in different layers of stratified materials using a low resolution ...
Effects of postgrazing residue on morphogenetic and structural characteristics of Tifton 85 pastures
(2016-07-01)
The ideal time to start grazing is when pastures reach 95% light interception. The use of residual leaf area index (rLAI) to time the interruption of grazing under intermittent grazing has recently been studied in forage ...
Rangeland grazing management in Argentine Patagonia
(IJAB. Friends science publishers, 2020-08-31)
Stocking rate adjustment in grazing management is recommended as a management tool to sustain productivity and improve soil health of permanent grassland ecosystems. The aim of this project was to assess the effect of ...
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 ...
Massa de forragem, composição morfológica e química de capim-tanzânia sob diferentes dias de descanso e altura de resíduo pós-pastejo
(Universidade Federal de Uberlândia (UFU), 2014)
Effects of grazing intensity and supplementation strategies on Tifton 85 production and on sheep performance
(2019-05-01)
This study evaluated the structural and production characteristics of Tifton 85 (Cynodon spp.) pastures and the performance of lambs under different residual leaf area index (rLAI) and supplementation strategies in tropical ...
Changes in plant cover induced by grazing affect the soluble fraction of soil organic carbon – but not the total pool size in the arid rangelands of Patagonian Monte, Argentina
(10th International Rangeland Congress, 2016)
Soilis the largest organic C (SOC) pool in the biosphere. The size ofthis pool depends on the primary production and SOC residence time which arecontrolled by biome type, climatic conditions and land management.In arid ...
Assessing soil microbial biodiversity as affected by grazing and woody vegetation cover in a temperate savannah
(Wiley Blackwell Publishing, Inc, 2021-04-07)
Although it is well established that land use and management affects soil microbial biodiversity, with consequences for soil-mediated ecosystem services, knowledge on human-induced variability in soil bacterial and fungal ...