Browsing Faculty of Natural Sciences by Author "Mutanga, Onisimo"
Now showing items 1-20 of 21
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Advancements in satellite remote sensing for mapping and monitoring ofalien invasive plant species (AIPs)
Royimani, Lwando; Mutanga, Onisimo; Dube, Timothy (Elsevier, 2019)Detecting and mapping the occurrence, spatial distribution and abundance of Alien Invasive Plants (AIPs) have recently gained substantial attention, globally. This work, therefore, provides an overview of advancements in ... -
Assessing edge effect on the spatial distribution of selected forest biochemical properties derived using the worldview data in Dukuduku forests, South Africa
Mutanga, Onisimo; Dube, Timothy; Omer, Galal (Wiley, 2019)This work explores the potential of the high‐resolution WorldView‐2 sensor in quan‐tifying edge effects on the spatial distribution of selected forest biochemical proper‐ties in fragmented Dukuduku forest in KwaZulu‐Natal, ... -
Carbon stock prediction in managed forest ecosystems using Bayesian and frequentist geostatistical techniques and new generation remote sensing metrics
Chinembiri, Tsikai Solomon; Mutanga, Onisimo; Dube, Timothy (MDPI, 2023)The study compares the performance of a hierarchical Bayesian geostatistical methodology with a frequentist geostatistical approach, specifically, Kriging with External Drift (KED), for predicting C stock using prediction ... -
Characterizing the spatio-temporal variations of C3 and C4 dominated grasslands aboveground biomass in the Drakensberg, South Africa
Shoko, Cletah; Mutanga, Onisimo; Dube, Timothy; Slotow, Rob (Elsevier, 2018)C3 and C4 grass species composition, with different physiological, morphological and most importantly phenological characteristics, influence Aboveground Biomass (AGB) and their ability to provide ecosystem goods and ... -
Correction: sibanda et al. application of drone technologies in surface water resources monitoring and assessment: a systematic review of progress, challenges, and opportunities in the global south. drones 2021, 5, 84
Dube, Timothy; Mazvimavi, Dominic; Sibanda, Mbulisi; Mutanga, Onisimo (Drones, 2022)In the original publication [1], “Fahad Alawadi. Detection of surface algal blooms using the newly developed algorithm surface algal bloom index (SABI)”, “Proc. SPIE 7825, Remote Sensing of the Ocean, Sea Ice, and Large ... -
Determining optimal new generation satellite derived metrics for accurate C3 and C4 grass species aboveground biomass estimation in South Africa
Shoko, Cletah; Mutanga, Onisimo; Dube, Timothy (MDPI, 2018)While satellite data has proved to be a powerful tool in estimating C3 and C4 grass species Aboveground Biomass (AGB), finding an appropriate sensor that can accurately characterize the inherent variations remains a ... -
Discrimination of tomato plants (solanum lycopersicum) grown under anaerobic baffled reactor effluent, nitrified urine concentrates and commercial hydroponic fertilizer regimes using simulated sensor spectral settings
Sibanda, Mbulisi; Mutanga, Onisimo; Dube, Timothy (MPDI, 2019)We assess the discriminative strength of three different satellite spectral settings (HyspIRI, the forthcoming Landsat 9 and Sentinel 2-MSI), in mapping tomato (Solanum lycopersicum Linnaeus) plants grown under hydroponic ... -
Effect of landscape pattern and spatial configuration of vegetation patches on urban warming and cooling in Harare metropolitan city, Zimbabwe
Kowe, Pedzisai; Mutanga, Onisimo; Dube, Timothy (Bellweather Publishing, 2021)The spatial configuration of vegetation patches in the landscape has implications for the provision of ecosystem services, human adaptation to climate change, enhancement, or mitigation of urban heat island. Until recently, ... -
Hierarchical Bayesian geostatistics for C stock prediction in disturbed plantation forest in Zimbabwe
Chinembiri, Tsikai S.; Mutanga, Onisimo; Dube, Timothy (Ecological Informatics, 2022)We develop and present a novel Bayesian hierarchical geostatistical model for the prediction of plantation forest carbon stock (C stock) in the eastern highlands of Zimbabwe using multispectral Landsat-8 and Sentinel-2 ... -
The impact of land-use/land cover changes on water balance of the heterogeneous Buzi sub-catchment, Zimbabwe
Chemura, Abel; Rwasoka, Donald Tendayi; Mutanga, Onisimo (Elsevier, 2020)The nature of interactions between ecological, physical and hydrological characteristics that determine the effects of land cover change on surface and sub-surface hydrology is not well understood in both natural ... -
Impacts of eco-environmental quality, spatial configuration, and landscape connectivity of urban vegetation patterns on seasonal land surface temperature in Harare metropolitan city, Zimbabwe
Kowe, Pedzisai; Mutanga, Onisimo; Dube, Timothy (Taylor and Francis Group, 2022)The study examined the impact of eco-environmental quality conditions, spatial configurations and landscape connectivity of urban vegetation on seasonal land surface temperature (LST) in Harare, Zimbabwe between May and ... -
Inter-Seasonal Estimation of Grass Water Content Indicators Using Multisource Remotely Sensed Data Metrics and the Cloud-Computing Google Earth Engine Platform
Masenyama, Anita; Mutanga, Onisimo; Dube, Timothy; Sibanda, Mbulisi (MDPI, 2023)Indicators of grass water content (GWC) have a significant impact on eco-hydrological processes such as evapotranspiration and rainfall interception. Several site-specific factors such as seasonal precipitation, temperature, ... -
Landsat-8 and sentinel-2 based prediction of forest plantation c stock using spatially varying coefficient Bayesian hierarchical models
Chinembiri, Tsikai Solomon; Mutanga, Onisimo; Dube, Timothy (MDPI, 2022)This study sought to establish the performance of Spatially Varying Coefficient (SVC) Bayesian Hierarchical models using Landsat-8, and Sentinel-2 derived auxiliary information in predicting plantation forest carbon (C) ... -
Landsat-8 and sentinel-2 based prediction of forest plantation c stock using spatially varying coefficient bayesian hierarchical models
Dube, Timothy; Chinembiri, Tsikai Solomon; Mutanga, Onisimo (Remote Sensing, 2022)This study sought to establish the performance of Spatially Varying Coefficient (SVC) Bayesian Hierarchical models using Landsat-8, and Sentinel-2 derived auxiliary information in predicting plantation forest carbon (C) ... -
Mapping rangeland ecosystems vulnerability to Lantana camarainvasion in semi-arid savannahs in South Africa
Dube, Timothy; Maluleke, Xivutiso Glenn; Mutanga, Onisimo (Journal of Ecology, 2022)We mapped and modelled the potential areas vulnerable to Lantana camara (L. camara) invasion in semi-arid savannah ecosystems in the communal lands of Bushbuckridge and Kruger National Park, South Africa. Specifically, we ... -
Pansharpened landsat 8 thermal-infrared data for improved land surface temperature characterization in a heterogeneous urban landscape
Mushore, Terence Darlington; Mutanga, Onisimo; Dube, Timothy (Elsevier, 2022)Challenges associated with adolescents are prevalent in South African societies. During the adolescence stage, children may become involved in deviant behaviour. Although a significant number of studies have focused on the ... -
Progress in remote sensing of grass senescence: A review on the challenges and opportunities
Royimani, Lwando; Mutanga, Onisimo; Dube, Timothy (Institute of Electrical and Electronics Engineers, 2021)Grass senescence estimation in rangeland is particularly important for monitoring the conditions of forage quality and quantity. During senescence, grasses lose their nutrients from the leaves to the root and thereby ... -
Remote Sensing Grassland Productivity Attributes: A Systematic Review
Bangira, Tsitsi; Mutanga, Onisimo; Sibanda, Mbulisi; Dube, Timothy; Mabhaudhi, Tafadzwanashe (MDPI, 2023)A third of the land on the Earth is composed of grasslands, mainly used for forage. Much effort is being conducted to develop tools to estimate grassland productivity (GP) at different extents, concentrating on spatial and ... -
Review of the current models and approaches used for maize crop yield forecasting in sub-Saharan Africa, and their potential use in early warning systems
Dube, Timothy; Chitsiko, Ringson J; Mutanga, Onisimo; Kutwayo, Dumisani (Physics and Chemistry of the Earth, 2022)Agriculture is the mainstay of many developing economies, and successful production is intricately linked to food security, economic development, and regional stability. Estimates of crop yield for strategic grain crops, ... -
Spatial clustering of vegetation fire intensity using modis satellite data
Mupfiga, Upenyu Naume; Mutanga, Onisimo; Dube, Timothy (MDPI, 2022)This work analyses the spatial clustering of fire intensity in Zimbabwe, using remotely sensed Moderate Resolution Imaging Spectroradiometer (MODIS) active fire occurrence data. In order to investigate the spatial pattern ...