We randomly assigned full-factorial treatment combinations of rainout shelters, simulated nitrogen deposition and prescribed fires to field plots in an herbaceous-dominated area of a semi-arid savanna.

Apr 10, 2016 · In addition, in our study we focus on a managed semi-arid savanna system, in which fires are usually suppressed directly by land users, and indirectly via reduced grass fuel biomass.

In this paper the term 'semi-arid savanna' refers to those regions of the world, which, in their natural state, have a predominant continuous grass cover, with scattered to numerous trees and shrubs.

A savanna biome is a grassland ecosystem characterized by a mix of grasses, scattered trees, and shrubs. Found primarily in semi-arid regions , such as parts of Africa, Australia, and South America, savannas are distinguished by their seasonal rainfall …

Methods: We randomly assigned full-factorial treatment combinations of rainout shelters, simulated nitrogen deposition and prescribed fires to field plots in an her-baceous-dominated area of a semi-arid savanna.

Jul 24, 2019 · These tree–grass interactions (often mediated by fire and herbivory) shape savanna tree ecology, and confound predictions of how strongly drought might affect trees.

Jan 15, 2018 · Soil under savanna shrubs is enriched in nutrients via positive feedbacks in ‘islands of fertility’. We investigated soil fertility and plant litter chemistry in arid South Africa in two coexisting shrub species. One shrub species was nitrogen-fixing and one was not.

Grassland patches within a semi-arid savanna were evaluated over 45-years for (1) local temporal dynamics of basal area for five dominant grass species within long-term heavily grazed and ungrazed treatments, (2) the influence of soil depth (resource availability) on vegetation dynamics, and (3) the applicability of community-level grazing ...

Jun 14, 2012 · We studied 18 grass species in semi-arid savanna of the Kalahari region of Botswana to quantify interspecific variation in three important root system traits including root system architecture, rhizosheath thickness and mycorrhizal colonization.

Feb 24, 2007 · Linking this data to daily meteorological and soil moisture data allowed the cues responsible for leaf flush in trees and grasses to be identified and a predictive model of savanna leaf-out was developed. This was tested on a 22-year NDVI dataset from the Advanced Very High Resolution Radiometer.