Author:Ramoelo, Abel; Cho, Moses A; Mathieu, Renaud SADate:Oct 2012The emergence of high resolution multispectral sensors with red-edge information such as, WorldView-2, RapidEye, Sentinel-2 (to be launched in 2013) and
SumbandilaSAT moves remote sensing towards routine monitoring of rangeland resource quality.Read more
Author:Ramoelo, Abel; Cho, Moses A; Mathieu, Renaud SA; Skidmore, AK; Schlerf, M; Heitkönig, IMADate:Oct 2012Grass quality and quantity information plays a crucial role in understanding the distribution, densities and population dynamics of herbivores (i.e. livestock and wildlife). Leaf nitrogen (N) and biomass (g/ m2) are indicators of grass quality ...Read more
Author:Lemley, D; Lekane, CP; Taljaard, Susan; Adams, JBDate:Jun 2022This study investigated the nutrient removal efficiency of a constructed wetland (CW) piloted to treat urban runoff before entering an estuary. Physico-chemical, dissolved inorganic nutrient (DIN and DIP), and stormwater inflow volume data ...Read more
Author:Buitenwerf, R; Stevens, N; Gosling, CM; Anderson, TM; Olff, HDate:May 2011Litter-feeding termites influence key aspects of the structure and functioning of semi-arid ecosystems around the world by altering nutrient and material fluxes, affecting primary production, food web dynamics and modifying vegetation ...Read more
Author:Dudeni-Tlhone, N; Ramoelo, Abel; Cho, Moses A; Debba, Pravesh; Mathieu, Renaud SADate:Oct 2010This paper uses the spatial and the least squares (Analysis of Covariance-ANCOVA) regression methods to evaluate the important environmental factors in estimating quality grass for grazing (based on the nitrogen (N) content in grass). The ...Read more
Author:Ramoelo, Abel; Skidmore, A; Schlerf, M; Heitkönig, I; Mathieu, Renaud SA; Cho, Moses ADate:Aug 2013Determining the foliar N: P ratio provides a tool for understanding nutrient limitation on plant production and consequently for the feeding patterns of herbivores. In order to understand the nutrient limitation at landscape scale, remote ...Read more
Author:Mdutyana, M; Thomalla, Sandy J; Philibert, R; Ward, BB; Fawcett, SEDate:Jul 2020Net primary production (NPP) fueled by nitrate is often equated with carbon export, providing a metric for CO2 removal to the deep ocean. This “new production paradigm” assumes that nitrification, the oxidation of regenerated ammonium to ...Read more
Author:Clarke, SDate:Oct 2012In this study, 5 000 kg of sawdust was effectively used to denitrify an industrially-high contaminated site. Total removal of nitrate concentration of up to
600 mg/L NO 3 as N was achieved.Read more
Author:Wakelin, J; McKechnie, AE; Woodborne, SMDate:Jul 2010The Blue Swallow (Hirundo atrocaerulea) is a threatened intra-African migrant with breeding populations in three geographically disjunct regions. We analysed stable hydrogen, nitrogen and carbon isotope ratios in feather keratin to determine ...Read more
Author:Symes, CT; Woodborne, SMDate:Nov 2011The authors measured d13C and d15N isotope signatures in flight feathers of a White-bellied Sunbird to assess the value of using stable isotopes of feathers in avian dietary studies. Significant variation in d13C and d15N isotope values of ...Read more