Southern Africa Collection

The Grassland Society of Southern Africa (GSSA) is involved and concerned with the science and practice of range and pasture management. This broad field involves primarily the use and conservation of natural resources. It encompasses applied fields such as livestock production, wildlife management, nature conservation, water catchment management and range and mine-dump rehabilitation. The disciplines include, amongst others, ecology, botany zoology, range and pasture science, animal science, soil science and genetics. This collection includes journal articles from the African Journal of Range and Forage Science as well as related articles and reports from throughout the Southern African region.

Contact
Grassland Society of Southern Africa
Address: 
GSSA
PO Box 41
Hilton
3245
South Africa
Total Entries in Collection: 
3603

Records in Collection

Published: 2012
1.?There are now approximately 10 examples of plants that use volatile cues emitted by damaged neighbours to adjust their defences against herbivores. For two of these examples, preliminary evidence suggested that plants may experience net benefits...
Published: 2012
The higher flammability of tropical savanna, compared with forest, plays a critical role in mediating vegetation-environment feedbacks, alternate stable states, and ultimately, the distribution of these two biomes. Multiple factors contribute to...
Published: 2012
Landscape metrics have been widely developed over the last two decades. One of the major recent developments in landscape metrics analysis was the integration of the third dimension. Topography has an extremely important role in ecosystems function...
Published: 2012
Long-term series of vegetation change is one of the key study contents for evaluating terrestrial ecosystems and plays an important role in global change study. The CSCS (Comprehensive and Sequential Classification System) model was used in the...
Published: 2012
This study compared the profitabilities of systems of dairy production based on N-fertilized grass (FN) and grass-white clover (WC) grassland and assessed sensitivity to changing fertilizer N and milk prices. Data were sourced from three system-...
Published: 2012
Plant species composition and community functional structure (i.e. trait composition at the community level) result from a hierarchy of environmental filters that constrain which species and traits tend to be dominant in a given habitat. We...
Published: 2012
The impact of deferred grazing (no defoliation of pastures for a period generally from spring to autumn) and fertilizer application on plant population density, ground cover and soil moisture in a hill pasture (annual grass dominated, with...
Published: 2012
The Northeast China Transect (NECT) is a mid-latitude terrestrial transect in the International Geosphere-Biosphere Programme. Its major environmental gradient is precipitation, which gradually decreases from the eastern mountainous region to the...
Published: 2012
Although portable x-ray fluorescence (XRF) technology is widely accepted for environmental use in field screening test regarding the analytical approach, it needs to be evaluated with sufficient data and meet its performance characteristics to be...
Published: 2012
To support the further development of grazing practices for dairy production systems based on perennial ryegrass (Lolium perenne L.), allometric relationships among leaf-stage categories and pseudostem were derived for perennial ryegrass tillers...
Published: 2012
1. The potential resorption of substantial amounts of nutrients from all vegetative organs of plants has large implications for the plant nutrient economy and for biogeochemical cycles. So far, most studies have focused on leaf nutrient resorption...
Published: 2012
Enhanced atmospheric ammonia (NH3) concentration could impact growth of crops. The effect of atmospheric NH3 in combination with nitrogen?deprived and ?sufficient supply (ND and NS, respectively) on growth of maize plants (Zea mays L.) was...
Published: 2012
OTALEX II is the Territorial and Environmental Observatory of Alentejo (Portugal) and Extremadura (Spain), co-financed by POCTEP, developed with the cross-border collaboration of several Portuguese and Spanish bodies. It is composed of a Spatial...
Published: 2012
Four herbicide (topik, puma super, granstar and derby) treatments at the recommended field dose (RFD) were applied for 5 weeks on wheat (Triticum sativum L. cv. Giza 168) crop. These selected herbicides are recommended to control two types (narrow...
Published: 2012
The objective of this study was to quantify the effect of perennial ryegrass (Lolium perenne L., PRG) sward density on seasonal and total DM yield under simulated grazing and animal grazing by cattle, and to assess the effectiveness of visually...
Published: 2012
Nitrous oxide (N2O) flux in the semi-arid Leymus chinensis (Trin.) Tzvel. grassland in Inner Mongolia, China was measured for two years (from January 2005 to December 2006) with the enclosed chamber technique. The measurements were made twice per...
Published: 2012
Understanding how environmental factors drive plant community assembly remains a major challenge in community ecology. The strength of different assembly processes along environmental gradients, such as environmental filtering and functional niche...
Published: 2012
The study evaluated the plasticity of Chloris gayana Kunth cv. Fine Cut to defoliation in terms of tiller size/density compensation (SDC). Twelve mini-swards were grown in a greenhouse under non-limiting water and nutrient availabilities for 188 d....
Published: 2012
Background: Agricultural intensification has transformed most grasslands of Central Europe from non-intensive to highly intensive management during the last 50 years, resulting in large reductions of species diversity. This impoverishment has raised...
Published: 2012
There is increased global interest in the environmental impacts of farming, including the need to prevent the contamination of soil, water and air with excessive amounts of nitrogen (N) and phosphorus (P) in grazed systems. Reduction in grazing...
Published: 2012
Surface soil shear strength can be a useful dynamic index for soil erodibility and thus a measure of soil resistance to water erosion. In this study, we evaluated the predictive capabilities of artificial neural networks (ANNs) and an adaptive neuro...
Published: 2012
In recent years, the regional environment ministry, conscious of the tremendous economic, social and environmental importance of the pastures of Andalusia, has stimulated a series of projects for the planning of pasture in different regions,...
Published: 2012
We investigated the relationships of net ecosystem carbon exchange (NEE), soil temperature, and moisture with soil respiration rate and its components at a grassland ecosystem. Stable carbon isotopes were used to separate soil respiration into...
Published: 2012
The present study highlights the effects of sheep grazing and precipitation on herbage and animal performance in a grazed steppe of Inner Mongolia. Experimental data were collected during grazing periods of four consecutive years (2005–2008), and...
Published: 2012
Climates are changing worldwide at rates not seen previously in geological time. This affects food production itself and the growth and reproduction of plant pathogens which reduce crop yield and quality. There is a need to develop an understanding...
Published: 2013
Plant growth can be limited by resource acquisition and defence against consumers, leading to contrasting trade-off possibilities. The competition-defence hypothesis posits a trade-off between competitive ability and defence against enemies (e.g....
Published: 2012
Grassland Science in Europe, Vol. 16
Published: 2012
Background: Elevated anthropogenic nitrogen (N) deposition is an important cause of biodiversity decline and disruption of ecosystem function and services, yet these impacts on many globally important ecosystems remain poorly studied. The Western...
Published: 2012
The Grange Feed Costing Model was modified to simulate the economic implications of grassland management strategies for a grass-based suckler beef calf-to-weanling system at the whole-farm level. The modified model enabled costing of annual grass...
Published: 2012
The effects of different land-use histories on contents of soil carbon (C) and nitrogen (N) and fluxes of greenhouse gases [carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O)] measured using the closed chamber method were investigated in...
Published: 2012
The studied area is the agricultural region Montes de Navahermosa integrated into the historic natural area Montes de Toledo. It is located in the south-western side of Toledo province (Castille-La Mancha, Spain). This territory is characterized by...
Published: 2012
The outcomes of previous studies have resulted in differing recommendations on the rate and timing of fertilizer N applications for forage maize. In order to gain an improved understanding of the role of N fertilizer, a field experiment was carried...
Published: 2012
Grassland biomass has been identified as a potential energy source. The combustion of mature and fibrous biomass, as occurs in extensive grasslands managed with low cutting frequencies, is one possible conversion technique. This study tested the...
Published: 2012
Climate change presents new challenges for managing plant health. Simultaneously, the revolution in sequencing technologies offers an exciting new perspective on whole microbial communities – and on both microbial responses to climate and microbial...
Published: 2012
Among the most promising approaches of long-term atmospheric CO2 sequestration is terrestrial biogeochemical carbon sequestration. One of the most promising terrestrial biogeochemical carbon sequestration mechanisms is the occlusion of carbon within...
Published: 2012
Little is known about the immediate effect of high nitrogen (N), phosphorus (P) and potassium (K) application rates on sown grasslands cut twice per year. We asked how quickly plant species composition, biomass yield, biomass chemical properties and...
Published: 2012
Increasing the residual water-soluble carbohydrate (WSC) concentration in silage may improve the nutritional value but impair aerobic stability. Our aim was to determine whether the residual WSC concentration and aerobic stability of low dry-matter...
Published: 2012
In many countries, high nitrous oxide (N2O) emissions have been observed during soil freezing and thawing periods. Quantification of those emissions is crucial to evaluate annual N2O emissions. For this study, we measured N2O and nitric oxide (NO)...
Published: 2012
This study of the plant landscape of a sub-coastal hilly area in southern Marche, Italy, has allowed the proposal of two main models that are highly correlated with the geomorphological and bioclimate variations of the area. This study area is very...
Published: 2012
The accuracy of two simple methods was compared for the prediction of crude protein (CP) content of above-ground plant material of mixed-species composition on abandoned cultivated land in Japan. The first method is based on standard CP values (in g...
Published: 2012
A rising plate meter (RPM) is an instrument used for the measurement of compressed sward height and estimation of yield on grasslands. The aim of this study was to investigate the use of an RPM to evaluate lucerne height as an agronomic trait...
Published: 2012
Estimation of the sensitivity for soil organic carbon to climate change is critical for evaluating the potential response of the terrestrial biosphere to global change. In this study, we integrated CENTURY 4.5 model with GIS to assess the soil...
Published: 2012
Edited by G. Lemaire, J. Hodgson and A. Chabbi. Wallingford UK and Cambridge MA, USA: CABI 2011. Hardback, 312 pp. ISBN 978-1-84593-809-3. £85/ US$160/ €120.
Published: 2012
There is a growing interest in the use of deficit irrigation and perennial pasture species other than perennial ryegrass (Lolium perenne L.) in temperate agriculture, in response to the decreasing availability of irrigation water. Deficit irrigation...
Published: 2012
We investigated the relationships between soil respiration and environmental factors during foliation and defoliation periods in three ecosystems under the same physical - geographical environmental conditions in central Japan. These ecosystems...
Published: 2012
Nitrogen (N) applications can have a significant effect on soil N availability. The effect of 3 years of N fertilization on soil net N mineralization during the growing season (May–September) was studied in 2005 and 2006 in grassland of northern...
Published: 2012
The purpose of this study was to investigate the response of ?15N in herbage and cattle tail switch hair to long-term grazing pressure on a rough fescue grassland (Festuca campestris Rydb.) near Stavely, Alberta, Canada. Cattle have grazed the...
Published: 2012
In the Peruvian sierra near the city of Cajamarca, livelihood options of extensive grazing and plantation forestry often conflict with ecosystem services provided by the native jalca grasslands where these land uses are undertaken. This study...
Published: 2012
Classifying grasses into plant functional types (PFT) according to their strategy of nutrient capture (PFT A, B and b) or nutrient conservation (PFT C) is claimed to predict variability in biomass production and herbage quality in grasslands. PFT A...