Browsing Faculty of Natural Sciences by Author "Dube, Timothy"
Now showing items 41-60 of 69
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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 ... -
Progress in the remote sensing of groundwater-dependent ecosystems in semi-arid environments
Rampheri, Mangana B.; Dube, Timothy; Dondofema, Farai (Elsevier, 2021)Remote sensing of groundwater-dependent ecosystems (GDEs) has increased substantially in recent years. Of significant prominence, is the delineation and mapping of groundwater-dependent vegetation (GDV), species diversity, ... -
Progress in the remote sensing of veld fire occurrence and detection: A review
Graham, Earl; Dube, Timothy; iiMpakairi, Kudzai S. (Wiley, 2023)Our research provides a detailed overview of the progress in remotely sensed fire monitoring techniques, which have been developed and employed for fire occurrence and detection. Our overview is provided from a literature ... -
Progress in the use of geospatial and remote sensing technologies in the assessment and monitoring of tomato crop diseases
Mothapo, Mologadi Clodean; Dube, Timothy; Abdel-Rahman, Elfatih (Taylor and Francis Group, 2022)With a growing global population and accelerating climatechange, systematic assessment and monitoring of crop diseases isurgently required to ensure food security and production.However, current dietary transitions ... -
Remote sensing for water resources and environmental management
Dube, Timothy; Shekede, Munyaradzi D.; Massari, Christian (MDPI, 2023)In line with the United Nations Sustainable Development Goal (SDG) 6, the main goal of the Special Issue on “Remote sensing for water resources and environmental management” was to solicit papers from a diverse range of ... -
Remote sensing for water resources and environmental management
Dube, Timothy; Shekede, Munyaradzi D.; Massari, Christian (Remote Sensing, 2022-12-21)In line with the United Nations Sustainable Development Goal (SDG) 6, the main goal of the Special Issue on “Remote sensing for water resources and environmental management” was to solicit papers from a diverse range of ... -
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 ... -
Remote sensing of land use-land cover change and climate variability on hydrological processes in Sub-Saharan Africa: Key scientific strides and challenges
Govender, Tanushri; Dube, Timothy; Shoko, Cletah (Taylor and Francis Group, 2022)The impact of land use land cover (LULC) change and climatevariability on water resources poses as a major threat in semi-aridenvironments, especially in the sub-Saharan Africa. Countries insub-Saharan Africa are vulnerable ... -
Remotely sensed applications in monitoring the spatio-temporal dynamics of pools and flows along non-perennial rivers: A review
Maswanganye, Sagwati Eugene; Dube, Timothy; Mazvimavi, Dominic (Taylor and Francis Group, 2022)Non-perennial rivers (NPRs) account for more than 50% of the world’s river network and their occurrence is expanding. Some rivers that were previously classified as perennial have evolved to be NPRs in response to climate ... -
Remotely sensed c3 and c4 grass species aboveground biomass variability in response to seasonal climate and topography
Dube, Timothy (Wiley Online Library, 2019)Seasonal climate and topography influence C3 and C4 grass species aboveground biomass (AGB). Climate change further threatens these grasses AGB, thereby compromising their ability to provide ecosystem goods and services. ... -
Remotely sensed data for estimating chlorophyll-a concentration in wetlands located in the Limpopo Transboundary River Basin, South Africa
Dzurume, Tatenda; Dube, Timothy; Shoko, Cletah (Physics and Chemistry of the Earth, 2022)Wetlands in semi-arid regions are highly productive and biologically diverse ecosystems that contribute significantly to livelihood and economic development and play a substantial role in sustaining rural livelihoods. These ... -
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 characterisation of vegetation diversity in groundwater-dependent ecosystems using in-situ and sentinel-2 msi satellite data
Mpakairi, Kudzai Shaun; Dube, Timothy; Dondofema, Farai (MDPI, 2022)Groundwater-Dependent Ecosystems (GDEs) are under threat from groundwater overabstraction, which significantly impacts their conservation and sustainable management. Although the socio-economic significance of GDEs is ... -
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 ... -
Spatio–temporal variation of vegetation heterogeneity in groundwater dependent ecosystems within arid environments
Mpakairi, Kudzai S; Dube, Timothy; Dondofema, Farai; Dalu, Tatenda (Ecological Informatics, 2022)Climate change, land cover change and the over–abstraction of groundwater threaten the existence of Groundwater-Dependent Ecosystems (GDE), despite these environments being regarded as biodiversity hotspots. The vegetation ... -
Spectral classification, mapping and physical habitat implications of a riparian invasion by Tamarix ramosissima Ledeb. in the Touws River, Klein Karoo, South Africa
Grenfell, Michael; Dube, Timothy (Taylor and Francis Group, 2022)This paper investigates the invasion of a reach of the Touws River by the deciduous alien tree Tamarix ramosissima Ledeb. (Pink Tamarisk, Saltcedar). The objectives of the paper were to investigate ... -
A systematic review on the use of remote sensing technologies in quantifying grasslands ecosystem services
Masenyama, Anita; Mutanga, Onisimo; Dube, Timothy; Bangira, Tsitsi (2022)The last decade has seen considerable progress in scientific research on vegetation ecosystem services. While much research has focused on forests and wetlands, grasslands also provide a variety of different provisioning, ... -
Understanding climate change effects on the potential distribution of an important pollinator species, Ceratina moerenhouti (Apidae: Ceratinini), in the Eastern Afromontane biodiversity hotspot, Kenya
Mukundamago, Mukundi; Dube, Timothy; Mudereri, Bester Tawona (Elsevier, 2023)Monitoring key pollinator taxa such as the genus Ceratina requires precise near real-time predictions to facilitate better surveillance. The potential habitat suitability of Ceratina moerenhouti was predicted in the Eastern ... -
Understanding climate change effects on the potential distribution of an important pollinator species, ceratina moerenhouti (apidae: ceratinini), in the eastern afromontane biodiversity hotspot, Kenya
Mukundamago, Mukundi; Dube, Timothy; Mudereri, Bester Tawona (Elsevier Ltd, 2023)Monitoring key pollinator taxa such as the genus Ceratina requires precise near real-time predictions to facilitate better surveillance. The potential habitat suitability of Ceratina moerenhouti was predicted in the Eastern ...