Personal information

Verified email domains

Activities

Employment (2)

Kruger National Park [SA]: Phalaborwa, Limpopo, ZA

Lanscape Ecologis (Scientific Services)
Employment
Source: Self-asserted source
Johannes George Chirima

Agricultural Research Council: Pretoria, ZA

Employment
Source: Self-asserted source
Johannes George Chirima

Education and qualifications (3)

University of the Witwatersrand Johannesburg Faculty of Science: Johannesburg, Gauteng, ZA

PhD
Education
Source: Self-asserted source
Johannes George Chirima

Indiana University of Pennsylvania: Indiana, Pennsylvania, US

2002-08-01 to 2005-05-31 | MSc ( Ecological Statistics, GIS, Biological Sciences,)
Education
Source: Self-asserted source
Johannes George Chirima

University of Zimbabwe: Harare, Harare, ZW

2000-07-01 to 2002-06-30 | MSc (Tropical Resources Ecology)
Education
Source: Self-asserted source
Johannes George Chirima

Professional activities (1)

SACNASP: PRETORIA, Gauteng, ZA

Professional ( Statistical modelling, Ecological Statistics, GIS, Remote sensing )
Membership
Source: Self-asserted source
Johannes George Chirima

Works (50 of 57)

Items per page:
Page 1 of 2

Evaluation of Micrometeorological Models for Estimating Crop Evapotranspiration Using a Smart Field Weighing Lysimeter

Water
2025-01-11 | Journal article
Contributors: Phathutshedzo Eugene Ratshiedana; Mohamed A. M. Abd Elbasit; Elhadi Adam; Johannes George Chirima
Source: check_circle
Crossref
grade
Preferred source (of 2)‎

Field-Scale Winter Wheat Growth Prediction Applying Machine Learning Methods with Unmanned Aerial Vehicle Imagery and Soil Properties

Land
2024 | Journal article
EID:

2-s2.0-85189183088

Part of ISSN: 2073445X
Contributors: Nduku, L.; Munghemezulu, C.; Mashaba-Munghemezulu, Z.; Masiza, W.; Ratshiedana, P.E.; Kalumba, A.M.; Chirima, J.G.
Source: Self-asserted source
Johannes George Chirima via Scopus - Elsevier
grade
Preferred source (of 3)‎

Patterns of Animal Rabies Prevalence in Northern South Africa between 1998 and 2022

Tropical Medicine and Infectious Disease
2024 | Journal article
EID:

2-s2.0-85183389374

Part of ISSN: 24146366
Contributors: Mogano, K.; Sabeta, C.T.; Suzuki, T.; Makita, K.; Chirima, G.J.
Source: Self-asserted source
Johannes George Chirima via Scopus - Elsevier
grade
Preferred source (of 3)‎

Field-scale variability and dynamics of soil moisture in Southwestern Nigeria

Discover Soil
2024-10-10 | Journal article
Contributors: Adedayo O. Adewole; Adebayo O. Eludoyin; George J. Chirima; Solomon W. Newete
Source: check_circle
Crossref

Unraveling the Relationship between Soil Nutrients and Maize Leaf Disease Occurrences in Mopani District Municipality, Limpopo Province, South Africa

Agronomy
2024-09-28 | Journal article
Contributors: Basani Lammy Nkuna; Johannes George Chirima; Solomon W. Newete; Adriaan Johannes Van der Walt; Adolph Nyamugama
Source: check_circle
Crossref
grade
Preferred source (of 2)‎

Assessing Maize Yield Spatiotemporal Variability Using Unmanned Aerial Vehicles and Machine Learning

Geomatics
2024-06 | Journal article | Author
Contributors: Colette de Villiers; Zinhle Mashaba-Munghemezulu; Cilence Munghemezulu; Johannes George Chirima; Solomon G. Tesfamichael
Source: check_circle
Multidisciplinary Digital Publishing Institute
grade
Preferred source (of 2)‎

Research Progress in the Application of Google Earth Engine for Grasslands Based on a Bibliometric Analysis

Grasses
2024-04 | Journal article | Author
Contributors: Zinhle Mashaba-Munghemezulu; Lwandile Nduku; Cilence Munghemezulu; Johannes George Chirima
Source: check_circle
Multidisciplinary Digital Publishing Institute
grade
Preferred source (of 2)‎

Synergetic Use of Sentinel-1 and Sentinel-2 Data for Wheat-Crop Height Monitoring Using Machine Learning

AgriEngineering
2024-04-22 | Journal article
Contributors: Lwandile Nduku; Cilence Munghemezulu; Zinhle Mashaba-Munghemezulu; Phathutshedzo Eugene Ratshiedana; Sipho Sibanda; Johannes George Chirima
Source: check_circle
Crossref
grade
Preferred source (of 2)‎

Determination of Soil Electrical Conductivity and Moisture on Different Soil Layers Using Electromagnetic Techniques in Irrigated Arid Environments in South Africa

Water (Switzerland)
2023 | Journal article
EID:

2-s2.0-85160833700

Part of ISSN: 20734441
Contributors: Ratshiedana, P.E.; Abd Elbasit, M.A.M.; Adam, E.; Chirima, J.G.; Liu, G.; Economon, E.B.
Source: Self-asserted source
Johannes George Chirima via Scopus - Elsevier
grade
Preferred source (of 3)‎

Developing an early warning system to strengthen disaster risk resilience: experiences from flood-prone areas of KwaZulu-Natal province

Research Square
2023 | Other
EID:

2-s2.0-85179437536

Contributors: Lunga, W.; Nkosi, M.; Chirima, G.; Madzivhandila, T.; Ratshiedana, P.; Ramaphakela, T.; Majikijela, Y.; Musarurwa, C.
Source: Self-asserted source
Johannes George Chirima via Scopus - Elsevier

The extent, perceived causes and impacts of land use and land cover change in Tyhume Valley, South Africa

Frontiers in Conservation Science
2023 | Journal article
EID:

2-s2.0-85170273364

Part of ISSN: 2673611X
Contributors: Masiza, W.; Hamandawana, H.; Chirima, J.G.; Khoboko, P.; Parkies, N.
Source: Self-asserted source
Johannes George Chirima via Scopus - Elsevier

The Umlindi Newsletter: Disseminating Climate-Related Information on the Management of Natural Disaster and Agricultural Production in South Africa

Climate
2023 | Journal article
EID:

2-s2.0-85180454105

Part of ISSN: 22251154
Contributors: Maake, R.; Malherbe, J.; Masupha, T.; Chirima, G.; Beukes, P.; Roffe, S.; Thompson, M.; Moeletsi, M.
Source: Self-asserted source
Johannes George Chirima via Scopus - Elsevier
grade
Preferred source (of 3)‎

Unmanned Aerial Vehicle (UAV) and Spectral Datasets in South Africa for Precision Agriculture

Data
2023 | Journal article
EID:

2-s2.0-85163718749

Part of ISSN: 23065729
Contributors: Munghemezulu, C.; Mashaba-Munghemezulu, Z.; Ratshiedana, P.E.; Economon, E.; Chirima, G.; Sibanda, S.
Source: Self-asserted source
Johannes George Chirima via Scopus - Elsevier
grade
Preferred source (of 3)‎

Weed Detection in Rainfed Maize Crops Using UAV and PlanetScope Imagery

Sustainability (Switzerland)
2023 | Journal article
EID:

2-s2.0-85172899874

Part of ISSN: 20711050
Contributors: de Villiers, C.; Munghemezulu, C.; Mashaba-Munghemezulu, Z.; Chirima, G.J.; Tesfamichael, S.G.
Source: Self-asserted source
Johannes George Chirima via Scopus - Elsevier
grade
Preferred source (of 3)‎

Modelling of Intra-Field Winter Wheat Crop Growth Variability Using in Situ Measurements, Unmanned Aerial Vehicle-Derived Vegetation Indices, Soil Properties, and Machine Learning Algorithms

2023-11-21 | Conference paper
Contributors: Lwandile Nduku; Cilence Munghemezulu; Zinhle Mashaba-Munghemezulu; Wonga Masiza; Phathutshedzo Eugene Ratshiedana; Ahmed Mukalazi Kalumba; Johannes George Chirima
Source: check_circle
Crossref

Quantifying Aboveground Grass Biomass Using Space-Borne Sensors: A Meta-Analysis and Systematic Review

Geomatics
2023-10-18 | Journal article
Contributors: Reneilwe Maake; Onisimo Mutanga; George Chirima; Mbulisi Sibanda
Source: check_circle
Crossref
grade
Preferred source (of 2)‎

Quantifying Aboveground Grass Biomass Using Space-Borne Sensors: A Meta-Analysis and Systematic Review

2023-06-27 | Preprint
Contributors: Reneilwe Maake; Onisimo Mutanga; George Chirima; Mbulisi Sibanda
Source: check_circle
Crossref
grade
Preferred source (of 2)‎

Do Satellite Data Correlate with In Situ Rainfall and Smallholder Crop Yields? Implications for Crop Insurance

Sustainability (Switzerland)
2022 | Journal article
EID:

2-s2.0-85123755058

Part of ISSN: 20711050
Contributors: Masiza, W.; Chirima, J.G.; Hamandawana, H.; Kalumba, A.M.; Magagula, H.B.
Source: Self-asserted source
Johannes George Chirima via Scopus - Elsevier
grade
Preferred source (of 3)‎

Grass species diversity response to brush packing in semi-arid rangelands of South Africa

Journal of Arid Environments
2022 | Journal article
EID:

2-s2.0-85137061199

Part of ISSN: 1095922X 01401963
Contributors: Mangani, T.; Marquart, A.; Chirima, G.; Kellner, K.
Source: Self-asserted source
Johannes George Chirima via Scopus - Elsevier
grade
Preferred source (of 2)‎

Public Health Awareness on Bat Rabies among Bat Handlers and Persons Residing near Bat Roosts in Makurdi, Nigeria

Pathogens
2022 | Journal article
EID:

2-s2.0-85138535520

Part of ISSN: 20760817
Contributors: Ameh, V.O.; Chirima, G.J.; Quan, M.; Sabeta, C.
Source: Self-asserted source
Johannes George Chirima via Scopus - Elsevier
grade
Preferred source (of 2)‎

Using mulching to reduce soil surface temperature to facilitate grass production

Heliyon
2022 | Journal article
EID:

2-s2.0-85144723907

Part of ISSN: 24058440
Contributors: Mangani, T.; Mangani, R.; Chirima, G.; Khomo, L.; Truter, W.
Source: Self-asserted source
Johannes George Chirima via Scopus - Elsevier

Validation of LAI, chlorophyll and FVC biophysical estimates from sentinel-2 level 2 prototype processor over a heterogeneous savanna and grassland environment in South Africa

Geocarto International
2022 | Journal article
EID:

2-s2.0-85132123501

Part of ISSN: 10106049
Contributors: Tsele, P.; Ramoelo, A.; Qabaqaba, M.; Mafanya, M.; Chirima, G.
Source: Self-asserted source
Johannes George Chirima via Scopus - Elsevier
grade
Preferred source (of 2)‎

Spatio-temporal epidemiology of animal and human rabies in northern South Africa between 1998 and 2017

PLOS Neglected Tropical Diseases
2022-07-29 | Journal article
Contributors: Kgaogelo Mogano; Daniel Leo Horton; Toru Suzuki; Debrah Mohale; Baby Phahladira; Ernest Ngoepe; Yusuke Kamata; George Chirima; Claude Sabeta; Kohei Makita
Source: check_circle
Crossref

A Proposed Satellite-Based Crop Insurance System for Smallholder Maize Farming

Remote Sensing
2022-03-21 | Journal article
Part of ISSN: 2072-4292
Source: Self-asserted source
Johannes George Chirima
grade
Preferred source (of 3)‎

Rabies outbreak in black-backed jackals (Canis mesomelas), South Africa, 2016.

Epidemiology and Infection
2022-01-07 | Journal article
Part of ISSN: 0950-2688
Part of ISSN: 1469-4409
Source: Self-asserted source
Johannes George Chirima
grade
Preferred source (of 2)‎

A remote sensing-based approach to investigate changes in land use and land cover in the lower uMfolozi floodplain system, South Africa

Transactions of the Royal Society of South Africa
2021 | Journal article
EID:

2-s2.0-85100597505

Part of ISSN: 0035919X
Contributors: Dlamini, M.; Adam, E.; Chirima, G.; Hamandawana, H.
Source: Self-asserted source
Johannes George Chirima via Scopus - Elsevier
grade
Preferred source (of 2)‎

Delineating smallholder maize farms from sentinel-1 coupled with sentinel-2 data using machine learning

Sustainability (Switzerland)
2021 | Journal article
EID:

2-s2.0-85105376640

Part of ISSN: 20711050
Contributors: Mashaba-Munghemezulu, Z.; Chirima, G.J.; Munghemezulu, C.
Source: Self-asserted source
Johannes George Chirima via Scopus - Elsevier
grade
Preferred source (of 3)‎

Linking agricultural index insurance with factors that influence maize yield in rain-fed smallholder farming systems

Sustainability (Switzerland)
2021 | Journal article
EID:

2-s2.0-85106187092

Part of ISSN: 20711050
Contributors: Masiza, W.; Chirima, J.G.; Hamandawana, H.; Kalumba, A.M.; Magagula, H.B.
Source: Self-asserted source
Johannes George Chirima via Scopus - Elsevier
grade
Preferred source (of 3)‎

Mapping smallholder maize farms using multi-temporal sentinel-1 data in support of the sustainable development goals

Remote Sensing
2021 | Journal article
EID:

2-s2.0-85105527010

Part of ISSN: 20724292
Contributors: Mashaba-Munghemezulu, Z.; Chirima, G.J.; Munghemezulu, C.
Source: Self-asserted source
Johannes George Chirima via Scopus - Elsevier
grade
Preferred source (of 3)‎

Modeling the spatial distribution of soil nitrogen content at smallholder maize farms using machine learning regression and sentinel-2 data

Sustainability (Switzerland)
2021 | Journal article
EID:

2-s2.0-85117727284

Part of ISSN: 20711050
Contributors: Mashaba-Munghemezulu, Z.; Chirima, G.J.; Munghemezulu, C.
Source: Self-asserted source
Johannes George Chirima via Scopus - Elsevier
grade
Preferred source (of 3)‎

Restoration after bush control in selected rangeland areas of semi-arid savannas in South Africa

Bothalia
2021 | Journal article
EID:

2-s2.0-85104956615

Part of ISSN: 23119284 00068241
Contributors: Kellner, K.; Mangani, R.T.; Sebitloane, T.J.K.; Chirima, J.G.; Meyer, N.; Coetzee, H.C.; Malan, P.W.; Koch, J.
Source: Self-asserted source
Johannes George Chirima via Scopus - Elsevier
grade
Preferred source (of 2)‎

Earth Observation Systems and Pasture Modeling: A Bibliometric Trend Analysis

ISPRS International Journal of Geo-Information
2021-11-20 | Journal article
Part of ISSN: 2220-9964
Source: Self-asserted source
Johannes George Chirima
grade
Preferred source (of 4)‎

Characterizing Leaf Nutrients of Wetland Plants and Agricultural Crops with Nonparametric Approach Using Sentinel-2 Imagery Data

Remote Sensing
2021-10-22 | Journal article
Part of ISSN: 2072-4292
Source: Self-asserted source
Johannes George Chirima
grade
Preferred source (of 5)‎

Crop Growth Monitoring and Yield Prediction System Applying Copernicus Data for Poland & South Africa

2021 IEEE International Geoscience and Remote Sensing Symposium IGARSS
2021-07-11 | Conference paper
Source: Self-asserted source
Johannes George Chirima
grade
Preferred source (of 2)‎

Assessing the Effects of Land Use on Surface Water Quality in the Lower uMfolozi Floodplain System, South Africa

International Journal of Environmental Research and Public Health
2021-01-11 | Journal article
Part of ISSN: 1660-4601
Source: Self-asserted source
Johannes George Chirima
grade
Preferred source (of 4)‎

Enhanced mapping of a smallholder crop farming landscape through image fusion and model stacking

International Journal of Remote Sensing
2020 | Journal article
EID:

2-s2.0-85090785369

Part of ISSN: 13665901 01431161
Contributors: Masiza, W.; Chirima, J.G.; Hamandawana, H.; Pillay, R.
Source: Self-asserted source
Johannes George Chirima via Scopus - Elsevier
grade
Preferred source (of 2)‎

Machine learning algorithms for mapping Prosopis glandulosa and land cover change using multi-temporal Landsat products: a case study of Prieska in the Northern Cape Province, South Africa

South African Journal of Geomatics
2020 | Journal article
Source: Self-asserted source
Johannes George Chirima

. Exploring machine learning algorithms for mapping crop types in a heterogeneous agriculture landscape using Sentinel-2 data. A case study of Free State Province, South Africa

South Africa Journal of Geomatics
2020-09-30 | Journal article
Source: Self-asserted source
Johannes George Chirima

Earth Observation Strategies for Degradation Monitoring in South Africa with Sentinels - Results from the Spaces 2 Saldi-Project Year 1

IGARSS 2020 - 2020 IEEE International Geoscience and Remote Sensing Symposium
2020-09-26 | Conference paper
Source: Self-asserted source
Johannes George Chirima
grade
Preferred source (of 2)‎

Complete Coding Sequences of 23 South African Domestic and Wildlife Rabies Viruses

Microbiology Resource Announcements
2020-09-17 | Journal article
Part of ISSN: 2576-098X
Source: Self-asserted source
Johannes George Chirima
grade
Preferred source (of 2)‎

Exploring machine learning algorithms for mapping crop types in a heterogeneous agricultural landscape using sentinel -2 data. A case study of the Free State Province, South Africa

South Africa Journal of Geomatics
2020-09-02 | Journal article
Source: Self-asserted source
Johannes George Chirima

Exploring machine learning algorithms for mapping crop types in a heterogeneous agriculture landscape using Sentinel-2 data. A case study of Free State Province, South Africa

South Africa Journal of Geomatics
2020-09-02 | Journal article
Source: Self-asserted source
Johannes George Chirima

Insights into the microbial composition and potential efficiency of selected commercial biofertilisers

Heliyon
2020-07 | Journal article
Part of ISSN: 2405-8440
Source: Self-asserted source
Johannes George Chirima
grade
Preferred source (of 2)‎

Socio-Economic Benefits Stemming from Bush Clearing and Restoration Projects Conducted in the D’Nyala Nature Reserve and Shongoane Village, Lephalale, South Africa

Sustainability
2020-06-24 | Journal article
Part of ISSN: 2071-1050
Source: Self-asserted source
Johannes George Chirima
grade
Preferred source (of 3)‎

The Umlindi Newsletter: disseminating climate-related information for agriculture and natural disaster in South Afric

South African Society for Atmospheric Sciences
2019-10-08 | Conference paper
Source: Self-asserted source
Johannes George Chirima

Expansions and contractions of occupied range by large mammalian herbivores in Kruger Park, South Africa: a response to rainfall variability

Biodiversity International Journal
2018-11-20 | Journal article
Part of ISSN: 2575-906X
Source: Self-asserted source
Johannes George Chirima

Radiometric calibration framework for ultra-high-resolution UAV-derived orthomosaics for large-scale mapping of invasive alien plants in semi-arid woodlands: <i>Harrisia pomanensis</i> as a case study

International Journal of Remote Sensing
2018-08-18 | Journal article
Part of ISSN: 0143-1161
Part of ISSN: 1366-5901
Source: Self-asserted source
Johannes George Chirima
grade
Preferred source (of 2)‎

Community composition and functions of endophytic bacteria of Bt maize

South African Journal of Science
2018-07-30 | Journal article
Part of ISSN: 1996-7489
Source: Self-asserted source
Johannes George Chirima
grade
Preferred source (of 2)‎

Evaluation of Unified Algorithms for Remote Sensing of Chlorophyll-a and Turbidity in Lake Shinji and Lake Nakaumi of Japan and the Vaal Dam Reservoir of South Africa under Eutrophic and Ultra-Turbid Conditions

Water
2018-05-09 | Journal article
Part of ISSN: 2073-4441
Source: Self-asserted source
Johannes George Chirima
grade
Preferred source (of 3)‎

Forecasting winter wheat yields using MODIS NDVI data for the Central Free State region

South African Journal of Science
2017-11-29 | Journal article
Part of ISSN: 1996-7489
Source: Self-asserted source
Johannes George Chirima
grade
Preferred source (of 2)‎
Items per page:
Page 1 of 2

Peer review (8 reviews for 3 publications/grants)

Review activity for Environmental monitoring and assessment. (1)
Review activity for Remote sensing applications. (4)
Review activity for Remote sensing. (3)