Abel Chemura

Abel Chemura
Potsdam Institute for Climate Impact Research | PIK · Climate Resilience: Research Domain II

PhD

About

68
Publications
45,222
Reads
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Citations
Introduction
I hope to develop and/or disseminate scientific innovations that help in sustainable development. I believe that science holds the key to many of the development challenges that the world is facing and appropriate scientific research, policy and innovation will make much more difference on the lives of farmers than anything else.
Additional affiliations
July 2018 - present
Potsdam-Institut für Klimafolgenforschung
Position
  • Researcher
June 2013 - June 2018
Chinhoyi University of Technology
Position
  • Research Associate
January 2010 - December 2014
EAFCA/CFC/CRI
Position
  • Building Capacity for Certification of East African Fine Coffees
Education
June 2009
SIWI/SIDA/AWRC
Field of study
  • Advanced International Training Program on Integrated Water Resources Management(IWRM)
June 2008
Hunan Agricultural Group
Field of study
  • Research Exchange Programme
June 2008
University of Pretoria
Field of study
  • Postgraduate Certificate Research Methodology

Publications

Publications (68)
Article
Full-text available
Tropical root and tuber crops such as cocoyam ( Colocasia esculenta (L.)) are important for food security and livelihoods and yet neglected in climate change impact studies and large-scale crop improvement programs. The aim of this study was to apply the maximum entropy modelling approach to assess production potential for the orphan crop cocoyam u...
Article
Full-text available
Southern Africa has been identified as one of the hotspot areas of climate extremes increasing, at the same time many communities in the region are dependent on rain-fed agriculture, which is vulnerable to these rainfall and temperature extremes. The aim of this study is to understand changes in extreme indices during the agricultural season under...
Article
The brown planthopper, Nilaparvata lugens (Stål) is the most serious pest of rice across the world. It is also known to transmit stunted viral disease; the insect alone or in combination with a virus causes the break- down of rice vascular system, leading to economic losses in commercial rice production. Despite its immense economic importance, inf...
Article
Perennial commodity crops, such as coffee, often play a large role globally in agricultural markets and supply chains and locally in livelihoods, poverty reduction, and biodiversity. Yet, the production of spatial information on these crops are often overlooked in favor of annual food crops. Remote sensing detection of coffee faces a particular set...
Article
This work assesses land cover changes on the Upper Runde sub-catchment, Zimbabwe, and associated effects on sedimentation rates and risks. The model was implemented using the common Geographic Information Systems tools. To achieve this objective, mean annual and monthly rainfall, as well as sediment data, were used (December 2016 and April 2017). L...
Article
Full-text available
Accurate and spatially explicit yield information is required to ensure farmers’ income and food security at local and national levels. Current approaches based on crop cutting experiments are expensive and usually too late for timely income stabilization measures like crop insurances. We, therefore, utilized a Gradient Boosted Regression (GBR), a...
Article
Full-text available
This study aimed to evaluate the influence of crop type, cropping systems and weather elements on foraging behaviour of pollinators, which is imperative for designing pollinator friendly agricultural systems. Generalised linear models were used to assess foraging time and visitation frequency of the honey bee Apis mellifera scutellata and the sting...
Article
Full-text available
Livestock is important for livelihoods of millions of people across the world and yet climate change risk and impacts assessments are predominantly on cropping systems. Climate change has significant impacts on Net Primary Production (NPP) which is a grassland dynamics indicator. This study aimed to analyze the spatio-temporal changes of NPP under...
Article
Full-text available
• Worldwide bees provide an important ecosystem service of plant pollination. Climate change and land-use changes are among drivers threatening bee survival with mounting evidence of species decline and extinction. In developing countries, rural areas constitute a significant proportion of the country's land, but information is lacking on how diffe...
Article
Full-text available
Current climate change impact studies on coffee have not considered impact on coffee typicities that depend on local microclimatic, topographic and soil characteristics. Thus, this study aims to provide a quantitative risk assessment of the impact of climate change on suitability of five premium specialty coffees in Ethiopia. We implement an ensemb...
Article
The little studied Mount Cameroon Francolin Pternistis camerunensis is endangered and strictly endemic to the undergrowth of Mount Cameroon’s primary forest. We surveyed the species in the Mount Cameroon National Park in July–August 2016 using call playback at 86 plots systematically placed along 17 transects in an attempt to assess the occupancy a...
Article
Full-text available
Edible insects have gained popularity as alternative food resources in the face of climate change and increasing carbon and environmental footprints associated with conventional agricultural production. Among the positive attributes that make edible insects suitable as food and feed substrates include rapid reproduction, high energy conversion effi...
Article
Examining the suitability of landscape patches for endangered species enhances critical insights and indicators into the processes of population structure, community dynamics, and functioning in ecosystems particularly in protected areas (PAs). While PAs are the cornerstone in biodiversity conservation, there is debate on their efficacy to retain t...
Article
Full-text available
Agroforestry is a promising adaptation measure for climate change, especially for low external inputs smallholder maize farming systems. However, due to its long-term nature and heterogeneity across farms and landscapes, it is difficult to quantitatively evaluate its contribution in building the resilience of farming systems to climate change over...
Article
Macrotermes natalensis is a widely consumed edible termite species that inhabits termitaria of different soil colours in southern Africa. However, there is paucity of data regarding the relationship between termitaria soil properties, nutritional composition and safety for edible soldier termites. We hypothesised that soil properties viz. metal com...
Article
Grasslands are subject to degradation in arid and semi-arid areas as the result of various pressures, including climate change. Therefore, spatial and temporal monitoring of vegetation cover fluctuation is needed for better understanding and management of natural resources to sustain livelihoods that depend on these grasslands. In this study, chang...
Article
Grasslands are subject to degradation in arid and semi-arid areas as the result of various pressures, including climate change. Therefore, spatial and temporal monitoring of vegetation cover fluctuation is needed for better understanding and management of natural resources to sustain livelihoods that depend on these grasslands. In this study, chang...
Experiment Findings
New agro-ecological regions for Zimbabwe have been developed. The package includes an android based application for dissemination of the new zones and other associated information
Article
Full-text available
Immediate yield loss information is required to trigger crop insurance payouts, which are important to secure agricultural income stability for millions of smallholder farmers. Techniques for monitoring crop growth in real-time and at 5 km spatial resolution may also aid in designing price interventions or storage strategies for domestic production...
Book
Full-text available
EXECUTIVE SUMMARY Agriculture remains a key sector to the economy of Zimbabwe providing livelihoods to more than 70% of the population and supplying raw materials for the predominantly agro-based economy. Land degradation, climate change, loss of biodiversity and ecosystem services pose significant challenges for the majority of the people who der...
Book
Full-text available
Eastern Zimbabwe is a mountainous area, which mostly lies in Agro-ecological Regions I and II. These regions receive the most rainfall and have the best natural suitability for the production of specialist crops and trees. The regions provide the most diverse ecosystem services in the country as they are at the top of a five-tier agro-ecological ch...
Article
Full-text available
This study is the first to assess wildlife-vehicle collisions (WVC) in Zimbabwe. The study analysed the impact and factors that influence vehicle collisions with large wild mammals along the Harare-Chirundu road section in the protected Hurungwe Safari Area, northern Zimbabwe. Data were retrieved from the Hurungwe Safari Area records and covered th...
Article
Full-text available
Climate change is projected to impact food production stability in many tropical countries through impacts on crop potential. However, without quantitative assessments of where, by how much and to what extent crop production is possible now and under future climatic conditions, efforts to design and implement adaptation strategies under Nationally...
Preprint
Full-text available
Crop diversification is a promising climate change adaptation strategy for food production stability. However, without quantitative assessments of where, with which crop mixes and to what extent diversification is possible now and under future climatic conditions, efforts to expand crop diversification under Nationally Determined Contributions (NDC...
Article
Full-text available
Many rural households derive a variety of direct use goods and services from wetland ecosystems in many countries, and as such wetlands are their pillar to livelihoods. The contribution of wetlands to economic wellbeing of society at household, community level and national level is however not well understood. The aim of this study was to use the d...
Article
Full-text available
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 and disturbed environments. The spatiotemporal dynamics of water fluxes and their relationship with land cover changes between 2009 and 2...
Article
Full-text available
Pollination ecosystem service contributes tremendously to food security; however, little is known about the farmers’ awareness of the ecosystem service to ensure conservation of pollinators. This study determined farmers’ perceptions, knowledge, attitudes toward bees, and pollination in a maize-producing region of Zimbabwe using semistructured ques...
Technical Report
A report prepared by the Potsdam Institute for Climate Impact Research (PIK) in cooperation with HFFA Research GmbH for the Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH on behalf of the German Federal Ministry for Economic Cooperation and Development (BMZ). The report aims to contribute to Ethiopia’s NDC implementation and to...
Article
Abstract After the withdrawal of agrarian capital from financing agriculture in the context of a backlash following the implementation radical land redistribution and tenure reforms since 2000, the fiscally constrained Zimbabwean state assumed an enlarged role in funding production, especially of food grains. Various input subsidy programs were in...
Conference Paper
Full-text available
Background Commodity trading is important for many developing countries with cocoa and coffee being important commodities traded globally. However, it is not established how climate change will impact on the internal sourcing of these commodities and if current distribution of infrastructure will be able to meet the distribution requirements of pro...
Poster
Full-text available
Agriculture in developing countries plays crucial role for food security, employment, and economic development. It, however, faces the greatest risks of climate change which is why many developing countries put adaptation in agriculture at the centre of their Nationally Determined Contributions (NDCs). Such adaptation planning shall start with quan...
Chapter
Sub-Saharan Africa (SSA) is a geographical region consisting of 49 countries, out of which at least 39 countries have experience with the cultivation of Jatropha curcas L. Since the year 2000, jatropha production escalated in SSA and peaked around 2007/2008. The major drivers of this trend were initial claims made about jatropha including its abili...
Article
This study sought to determine Local Climate Zones (LCZs) in Harare metropolitan City, using Landsat 8 multi-spectral and multi-temporal data. The World Urban Database and Access Portal Tool (WUDAPT) and Support Vector Machine classifiers were applied. Training datasets were extracted from Google Earth as prescribed by the WUDAPT procedure. Before...
Article
Edible insects present unique opportunities for food and nutrition security in many African communities. However, the characteristics of habitats and spatial distribution of edible insects is not known and yet it is important for understanding their ecology, planning harvesting and conservation activities in the wild. The edible ground cricket (Hen...
Article
Nitrogen (N) is the most limiting factor to coffee development and productivity. Therefore, development of rapid, spatially explicit and temporal remote sensing-based approaches to determine spatial variability of coffee foliar N are imperative for increasing yields, reducing production costs and mitigating environmental impacts associated with exc...
Research
Nutritional compositiopn of insects that are consumed in Zimbabwe and the habitast they occupy and are normally captured from during harvesting.
Article
Full-text available
Coffee leaf rust (CLR) caused by the fungus Hemileia vastarix is a devastating disease in almost all coffee producing countries and remote sensing approaches have the potential to monitor the disease. This study evaluated the potential of Sentinel-2 band settings for discriminating CLR infection levels at leaf levels. Field spectra were resampled t...
Article
The interest in the use of remote sensing data in agriculture, but also for plant disease assessments, has in-12 creased considerably in the last years. The satellite-based Sentinel-2 MultiSpectral Imager (MSI) sensor has been launched recently for multispectral vegetation condition assessment for agricultural and ecosystem applications. The aim of...
Article
The development of cost-effective, reliable and easy to implement crop condition monitoring methods is urgently required for perennial tree crops such as coffee (Coffea arabica), as they are grown over large areas and represent long term and higher levels of investment. These monitoring methods are useful in identifying farm areas that experience p...
Article
Reliable and accurate quantification of plant Leaf Area Index (LAI) is critical in understanding its role in reducing runoff. The main aim of the present study was to evaluate the ability of the Red Edge (RE) band derived from RapidEye in estimating LAI for applications in quantifying canopy interception at landscape scale. To achieve this objectiv...
Article
Full-text available
An understanding of the habitat selection patterns by wild herbivores is critical for adaptive management, particularly towards ecosystem management and wildlife conservation in semi arid savanna ecosystems. We tested the following predictions: (i) surface water availability, habitat quality and human presence have a strong influence on the spatial...
Data
Presence only data for four wild herbivores collected using road counts for the years 2006 and 2010. (TXT)
Data
The coefficient of determination (R2) and the variance inflation factor (VIF) of the four environmental variables used in the model. (DOCX)
Article
Full-text available
p>The paper investigates the level of water user participation in water conservation and demand management in Gweru. Data was solicited from a combination of user opinion and key informants selected from the local authority and citizen representative groups. A household survey including 489 residents was carried out in the different categories of r...
Article
Edible insects are gaining recognition as food with potential of contributing to attainment of household food security. In sub-Saharan Africa, sustainable use of insects as food is threatened by lack of data on host plants and habitatassociations. In addition, lack of nutritional data on most edible insects reduces consumer confidence and limits in...
Article
Coffee is a commodity of international trade significance, and its value chain can benefit from age-specific thematic maps. This study aimed to assess the potential of Landsat 8 OLI to develop these maps. Using field-collected samples with the random forest classifier, splitting coffee into three age classes (Scheme A) was compared with running the...
Article
Full-text available
Coffee is an important commodity crop in Zimbabwe and many other African countries in terms of its contribution to local and national economies. Coffee production in terms of productivity and quality face severe constraints due to climate change. A study was therefore carried out to understand and quantify the potential impact of climate change on...
Article
Full-text available
Information about age of oil palm is important in sustainability assessments, carbon mapping, yield projections and precision agriculture. The aim of this study was to develop and test an approach to determine the age of oil palm plantations (years after planting) by combining high resolution multispectral remote sensing data and regression techniq...
Article
Full-text available
A study was carried out to determine the effects of organic, inorganic fertilizers and integrated soil fertility management and irrigation levels (1,000, 750 and 500 ml per planting station) on coffee growth. There were no significant differences (p > 0.05) in girth, number of leaves and number of primaries due to the different soil fertility manag...
Article
Full-text available
Soil salinity and sodicity are major factors limiting agricultural productivity in irrigation schemes located in semi-arid areas. A study was conducted to assess the quality of irrigation water used in Mutema Irrigation Scheme located in south-east Zimbabwe to understand how irrigation water quality is related to the chemical quality of soils in th...
Article
Full-text available
A study was conducted to evaluate four common coffee (Coffea arabica) varieties in Zimbabwe for drought tolerance and ability to recover. The plants were subjected to drought stress for 21 and 28 days with evaluation of recovery done 14 days after interruptive irrigation. Coffee varieties were not significantly different in initial fresh and dry bi...
Article
Full-text available
The production of agricultural commodities faces increased risk of pests, diseases and other stresses due to climate change and variability. This study assesses the potential distribution of agricultural pests under projected climatic scenarios using evidence from the African coffee white stem borer (CWB), Monochamus leuconotus (Pascoe) (Coleoptera...
Conference Paper
Full-text available
The farmer field school (FFS) concept grew as a result of inadequacies realized in other agricultural extension approaches in dealing with crop production challenges. The objectives of this paper are to analyze how farmer experimentation in the coffee FFS has been performing in terms of agricultural innovation and dissemination of farming technolog...