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Peter Ndubuisi Eze

Peter Ndubuisi Eze
Botswana Int'l Univ of Sci and Tech

B.Agric., M.Phil., Ph.D.
Open to collaborations in: sustainable management of soil resources and soil-landscape dynamics under changing climate.

About

45
Publications
14,452
Reads
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651
Citations
Citations since 2016
35 Research Items
573 Citations
2016201720182019202020212022050100150
2016201720182019202020212022050100150
2016201720182019202020212022050100150
2016201720182019202020212022050100150
Introduction
A geoscientist. My research centers on pure and applied pedology focusing on how soils form, occur and function at landscape, regional and continental scales in both natural and managed ecosystems.
Additional affiliations
March 2015 - present
Botswana International University of Science and Technology
Position
  • Senior Researcher
March 2014 - February 2015
University of the Witwatersrand
Position
  • PostDoc Position
February 2011 - December 2013
University of Cape Town
Position
  • PhD Student
Education
January 2011 - December 2013
University of Cape Town
Field of study
  • Environmental and Geographical Science
August 2006 - December 2008
University of Ghana
Field of study
  • Soil Science
October 1995 - August 2021
University of Nigeria
Field of study
  • Agriculture with a major in Soil Science

Publications

Publications (45)
Article
Full-text available
This study examined the fixation pattern and kinetics of plant-available [diethylene triamine pentaacetic acid (DTPA)-extractable] copper (Cu), as well as basic soil properties that influence Cu availability in selected semi-arid soils. Soil samples from six different series were used and data obtained from Cu extraction experiments fitted to vario...
Article
Full-text available
Bulk density (ρb), a soil physical property critical for estimating soil carbon storing potentials, is often under-reported in many tropical soil databases because of the difficulty and tedious nature of its measurement in the field. In this study, a pedotransfer function was developed to estimate the bulk density of topsoils (0–30 cm) of Nimbia Fo...
Article
Earthenware pottery making, a major occupation among rural dwellers in southern Botswana, has been one of the mainstay of their economy for centuries. Consequently, local potters have classified their pottery-making soils based on indigenous knowledge with no verifiable scientific support. This study explores information on the criteria used by ind...
Article
Full-text available
The benefits of digital soil maps cannot be overemphasised. For many years, researchers have mapped different soil classes, properties and processes while identifying the spatial associations between soil properties using side-by-side visualization maps. Although this is acceptable, it may be difficult to identify complex spatial associations betwe...
Article
Proxy records from across the Southern Hemisphere show significant local to regional scale variability in climatic and environmental conditions during late Marine Isotope Stage 3 and early Marine Isotope Stage 2, prior to the global last glacial maximum (LGM; 26.5–19.0 kyr). Although not necessarily synchronous across the hemisphere, the regional s...
Article
Full-text available
Given that soil properties including micronutrient contents vary in space and time, geospatial mapping is necessary for robust site-specific management planning. Kriging interpolation is often used in GIS environments for mapping, but it has inherent limitation of having a smooth effects. In this study, sequential Gaussian simulation (SGS) was used...
Article
Full-text available
Environmental pollution by potentially toxic element (PTE) and the associated health risks in humans are increasingly becoming a global challenge. The current study is an in-depth assessment of PTEs including the often studied lead (Pb), manganese (Mn), zinc (Zn), arsenic (As) and the less-studied titanium (Ti), rubidium (Rb), strontium (Sr), zirco...
Preprint
Full-text available
A quarry in the Chobe Enclave, northern Botswana, exposes a prominent pedostratigraphic unit of approximately 8 metres consisting of two pedostratigraphic levels (PL), older PL1 and younger PL2. In a region where proxies for palaeoenvironmental reconstruction are terribly lacking, this study assessed the potentials of paleosols (fossil soils) to an...
Chapter
Variations in the nature and properties of soils (pedodiversity) on the Late Neogene hilly dryland and Quaternary erosional and depositional surfaces of the Hardveld, spanning the south-eastern to south-central parts of Botswana are well established. Following the updated IUSS Working Group World Reference Base (WRB) soil classification system, thi...
Article
Dimensionality reduction is important for revealing important details that may be useful in decision-making. Although different dimensionality reduction methods have been applied in several soil-based studies, Kohonen self-organizing map neural network (KSOM-NN) has attracted significant attention from researchers because of the quality of data vis...
Article
Full-text available
Environmental pollution by potentially toxic element (PTE) and the associated health risks in humans are increasingly becoming a global challenge. The current study is an in-depth assessment of PTEs including the often studied lead (Pb), manganese (Mn), zinc (Zn), arsenic (As) and the less-studied titanium (Ti), rubidium (Rb), strontium (Sr), zirco...
Article
The application of multivariate geostatistical and statistical methods remain valuable tools for environmental pollution assessment. In particular, stochastic simulation techniques like sequential Gaussian simulation (SGS) and the self-organizing map artificial neural networks (SeOM-ANNs) have facilitated the understanding of the spatial distributi...
Article
Rapid, inexpensive, and equally reliable estimates of potentially toxic elements are a necessity; portable X-ray fluorescence (pXRF) spectrometry is a handy tool to help achieve such. The current study sought to compare multiple linear regression with three regularized regression models [Ridge, Lasso, and ElasticNet (ENET)] for the estimation of to...
Article
Pedogenic parameters and data on geochemical compositions were analysed to improve our understanding of pedogenesis and soil morphology in an ecologically and geologically unique and relatively quiescent tectonic setting of the Okavango Delta, northern Botswana. A complex interaction of pedogenic and gradational processes in the area resulted in th...
Conference Paper
Full-text available
The Okavango delta is home to the biggest wetland ecosystem in southern Africa. Charaterised by hot semi-arid climates, evapotranspiration exceeds precipitation in the Okavango and this leads to the deposition of soluble salts, mainly alkali carbonates, as surface crusts which are subsequently leached into the subsoil during rainy season (McCarthy...
Article
Aggregate-protected soil organic matter remains an important platform for organic carbon stabilisation and a sink for atmospheric CO 2 emission, which play a crucial role in sustainable functioning of terrestrial ecosystems. This study was conducted to determine water stable soil aggregates, dry stable aggregates, and soil organic carbon (SOC) asso...
Article
Full-text available
Termite mounds are replete with natural nanoparticles, and they vary in physicochemical, geochemical, mineralogical, and biological properties from the adjoining soils. Although termite mounds have wide ecological and environmental roles including soil formation, faunal and vegetation growth and diversity, organic matter decomposition, geochemical...
Article
Full-text available
The bioavailability of trace elements is strongly influenced by the physical and chemical properties of the soil system. This study sought to establish the relationships between the trace elements (barium, strontium and rubidium), soil organic matter and soil separates in semiarid soils from Central Botswana in a bid to improve our understanding of...
Data
Batswana (people from Botswana) hold core traditional values in high esteem and derive satisfaction from passing such values which include proverbs across generations. Proverbs are extensively used among the elders and they are generally rich in morally sound philosophies needed for purposeful living and peaceful coexistence. Setswana is the domina...
Presentation
Full-text available
A student conference on Geochemistry aspects
Article
Full-text available
Bacterial diversity is known to be a driver of soil ecosystem services and it is influenced by the natural integrity of the environments. Samples from garden soil, saline soil and sludge-impacted soil were studied to evaluate the influence of soil properties on bacterial abundance and diversity for improved management. Soil samples were collected f...
Article
Full-text available
The suitability of a reference element or normalizer used in assessing soil contamination levels using enrichment factor (EF) is important for soil quality assessment and monitoring. This study evaluated the results of using three reference elements Ti, Fe, and Zr for EF determination of Rb and Sr in soils within treated wastewater discharge vicini...
Article
Full-text available
Increasing environmental and socioeconomic transformations in African drylands are driving land degradation. Using the Composite Land Degradation Index, this study assessed physical, chemical and biological degradation by determining their extent and severity. Palapye, an agro-pastoral region in eastern Botswana was used as a case study. Land degra...
Article
Full-text available
The soils were characterized with regards to their macro morphology, physicochemical properties and heavy metal contents. This is to infer their pedogenesis and propose agrotechnology transfers as well as management considerations necessary for sustainable cultivation. A reconnaissance survey was used for initial soil identification. Two categories...
Article
Full-text available
Geostatistical modelling has proven to be a good tool for decision making in soil nutrient management because it has the ability to map spatial heterogeneity and uncertainty. This study outlines a comparative approach to quantify the uncertainties and correlations in spatial process models as illustrated for the distribution of Zn in top soils of a...
Chapter
Full-text available
Proverbs are truths that link one generation to another. They h ave been passed down through millennia to provide advice about how to live life. Every country has a vast archive of proverbs that have been handed down orally from generation to generation. The very name “proverb” indicates that they originated “before” (Latin, pro) the written “word”...
Chapter
Full-text available
Proverbs are truths that link one generation to another. They h ave been passed down through millennia to provide advice about how to live life. Every country has a vast archive of proverbs that have been handed down orally from generation to generation. The very name “proverb” indicates that they originated “before” (Latin, pro) the written “word”...
Article
Full-text available
With a mining-driven economy, Botswana has experienced increased geochemical exploration of minerals around existing mining towns. The mining and smelting of copper and nickel around Selibe-Phikwe in the Central Province are capable of releasing heavy metals including Pb, Fe, Mn, Co, Ni and Cu into the soil environments, thereby exposing humans, pl...
Article
Fluvial geomorphology affects river character, behaviour, evolution, trajectory of change and recovery potential, and as such affects biophysical interactions within a catchment. Water bodies in South Africa, in common with many other water-stressed parts of the world, are generally under threat due to increasing natural and anthropogenic influence...
Article
Industrial and domestic wastewater is a potential contaminant capable of degrading the quality of the soil environments, if not properly treated. This study reports the 20 years cumulative effects of treated wastewater discharge on heavy metal (HMs) concentration in the proximal environment of Palapye Wastewater Treatment Plant (PWTP), Central Bots...
Article
Full-text available
Geospatial dataset of trace elements including manganese (Mn), iron (Fe), titanium (Ti), rubidium (Rb), strontium (Sr), thorium (Th), Vanadium (V) and Zirconium (Zr) of near-surface soils in a Cu-Ni prospecting field at Airstrip North, Central Botswana were statistically analysed. Grid sampling method was used in the field data collection. The rela...
Article
Full-text available
This study examined zinc (Zn) fixation pattern and kinetics in three semiarid alkaline soils of the Southern High Plains, USA. Soil chemical data obtained from Zn-extraction experiments conducted at different depths were fitted to various kinetic models to examine Zn fixation patterns. Within the experimental period of 90 days, approximately 57% of...
Article
Full-text available
This article contains a statistically analyzed dataset of the heavy metals including Cr, Co, Ni, Cu, Zn and Pb contents of near-surface (~30cm depth) soils in a Cu–Ni prospecting field at Airstrip North, Central Botswana. The soils developed on paragneisses and amphibolites parent materials in a semi-arid environment with hardveld vegetation, “The...
Article
Three pedons on the alluvial terraces of the Sabie-Sand River Basin within Kruger National Park, South Africa, were studied to improve our understanding of recent environmental changes, and assess degree of chemical weathering and pedogenesis in the area using geochemical and micromorphology proxies. Particle-size distributions were obtained using...
Article
Despite being well renowned for prominent palaeosols, there is no documented attempt at appraising the suitability of existing palaeosol nomenclature and classification systems for palaeosols from South Africa, even in the wake of increasing scientific awareness of the applicability of palaeosol-based proxies for palaeoenvironmental and palaeoclima...
Article
Full-text available
Properties of five soils developed on different positions of a Legon hill catena in the Accra Plains, Ghana, were studied. Nyigbenya, Toje, Adenta, Haatso and Alajo series were located on the higher upperslope, lower upperslope, middle slope, lower slope and bottom slope positions, respectively. All the soils had bulk density between 1.00 and 1.40...
Article
Full-text available
Globally, much weight is currently being placed on agriculture to provide food for the growing popu-lation as well as feedstock for the bioenergy industry. Unfortunately, the intensification of agricultural operations to satisfy these growing needs has been associated with a number of environmental and human health risks. A review of publications o...
Article
Full-text available
Palaeosols are common along the coastline of southern South Africa as stacked aeolian dune deposits but have rarely been studied. We selected two late Quaternary palaeosols exposed in a marine cliff-face at Koeberg and coastal barrier dune at Goukamma, South Africa in order to improve our understanding of their pedogenesis and palaeoclimate dynamic...
Article
Full-text available
At elevated temperature regimes and abundant precipitation, mobilization and accretion of weathered iron oxides are promoted especially in a reduced environments in the tropics. This may lead to the formation of plinthite, which hardens irreversibly upon repeated wetting and drying to form petroplinthite. The need for this review stems from the see...
Data
a b s t r a c t Neogene Langebaanweg (LBW) palaeosol-sediment-sequences at the West Coast of South Africa are well known for their well-preserved rich palaeontological heritage. The palaeosols developed on estuarine/ marine/coastal alluvial deposits stacked on each other, ranging in age from the Mid-Miocene to Qua-ternary. Elemental mobility and re...
Article
Full-text available
a b s t r a c t Neogene Langebaanweg (LBW) palaeosol-sediment-sequences at the West Coast of South Africa are well known for their well-preserved rich palaeontological heritage. The palaeosols developed on estuarine/ marine/coastal alluvial deposits stacked on each other, ranging in age from the Mid-Miocene to Qua-ternary. Elemental mobility and re...
Article
Full-text available
Contaminants such as nitrogen (N), phosphorus (P), dissolved organic carbon (DOC), arsenic (As), heavy metals, and infectious pathogens are often associated with agricultural systems. Various soil and water remediation techniques including the use of chemical amendments have been employed to reduce the risks associated with these contaminants. This...
Article
Full-text available
Environmental contamination by heavy metals remains a major threat to health and agricultural productivity, particularly in developing countries. This study evaluated the distribution, controlling variables, and potential sources of heavy metals in the soils of the Legon hill catena, prominent soils of Accra Plains, Ghana, West Africa. Soil samples...

Questions

Questions (3)
Question
I have a soil sample and would like to isolate and identify the eggs and/or larvae in it. Anyone with a simplified laboratory guide on how achieve this objective?
Question
In post-processing of sequential Gaussian simulation raster in ArcMap, can someone please provide a step-by-step guide on how to calculate the joint probability (spatial uncertainty validation) for a given soil property hotspots on 100 realization in ArcMap for four critical probability thresholds (98, 95, 90, and 80%). Thank you very much.
Question
I have a large geospatial dataset on heavy metals in soils. After performing OK, IDW, and spline interpolation, I would like to compare the outputs statistically to know which method yields better results in my study area. Please help with a step-by-step guide and also how to interpret the results.
I understand Raster Calculator in ARCGIS can also be used. Could someone please shed more light on this.
Thank you.

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Cited By

Projects

Projects (2)
Project
Sustainable and climate adapted management of water resources related to mining activities in southern Africa. What are the best water amount and quality monitoring concepts and technologies as that are fundamental for sustainable mining water management? This includes the total water balance from groundwater and surface via soil moisture to precipitation and mine water ? How can water reuse be made safe with respect to irrigation in land rehabilitation measures or agriculture?
Project
The main goal of this project is to provide distributed soil moisture information at regional scales with reasonable spatial and temporal scales in a semi-arid region. In addition, also to analyse factors that contribute to soil moisture variability in this study.