Andries Jordaan

Prof. Andries Jordaan


Research Focus & Metrics

Academic Career Length

15Years (2012-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 January 2018 in Climate Risk Management
Verified
Journal Article
Open access
MMMuluken Mekuyie
Muluken Mekuyie
AJAndries Jordaan
Andries Jordaan
YMYoseph Melka
Yoseph Melka

29 June 2020 in Sustainable Water Resources Management
Verified
Journal Article
Closed access
PDF file
YNYong Sebastian Nyam
Yong Sebastian Nyam
Julius Harrison KotirJulius Harrison Kotir
Julius Harrison Kotir
AJAndries Jordaan
Andries Jordaan
AOAbiodun Ogundeji
Abiodun Ogundeji
ATA. R. Turton
A. R. Turton

27 January 2017 in Jàmbá: Journal of Disaster Risk Studies
Verified
Journal Article
Open access
PDF file
FMFumiso Muyambo
Fumiso Muyambo
AJAndries Jordaan
Andries Jordaan
Yonas BahtaYonas Bahta
Yonas Bahta
The aim of this article was to assess and identify social vulnerability of communal farmers to drought in the O.R. Tambo district in the Eastern Cape province of South Africa using a survey data and social vulnerability index (SoVI). Eleven social vulnerability indicators were identified using Bogardi, Birkman and Cardona conceptual framework. The result found that an SoVI estimated for O.R. Tambo district was very high with a Likert scale of 5 for cultural values and practices, security or safety, social networks, social dependence, preparedness strategies and psychological stress attributed for the high value of social vulnerability to drought. Indigenous knowledge and education had an SoVI value of 2, which was of low vulnerability, contributing positively to resilience to drought. The study also found that government involvement in drought risk reduction is limited; as a result, the study recommends that a national, provincial and district municipalities policy on drought risk reduction and mitigation should be developed.

26 September 2017 in Sustainability
Verified
Journal Article
Open access
PDF file
VGValerie Graw
Valerie Graw
GGGohar Ghazaryan
Gohar Ghazaryan
KDKaren Dall
Karen Dall
AGAndoni Delgado Gómez
Andoni Delgado Gómez
AAAyman Abdel-Hamid
Ayman Abdel-Hamid
ODOlena Dubovyk
Olena Dubovyk
Eastern Cape Province in South Africa has experienced extreme drought events during the last decade. In South Africa, different land management systems exist belonging to two different land tenure classes: commercial large scale farming and communal small-scale subsistence farming. Communal lands are often reported to be affected by land degradation and drought events among others considered as trigger for this process. Against this background, we analyzed vegetation response to drought in different land management and land tenure systems through assessing vegetation productivity trends and monitoring the intensity, frequency and distribution of the drought hazard in grasslands and communal and commercial croplands during drought and non-drought conditions. For the observation period 2000–2016, we used time series of 250 m Vegetation Condition Index (VCI) based on the Moderate Resolution Imaging Spectroradiometer (MODIS) Enhanced Vegetation Index (EVI) and Climate Hazard Group InfraRed Precipitation with Station data (CHIRPS) precipitation data with 5 km resolution. For the assessment of vegetation dynamics, we: (1) analyzed vegetation productivity in Eastern Cape over the last 16 years with EVI; (2) analyzed the impact of drought events on vegetation productivity in grasslands as well as commercial and communal croplands; and (3) compared precipitation-vegetation dynamics between the drought season 2015/2016 and the non-drought season 2011/2012. Change in total annual vegetation productivity could detect drought years while drought dynamics during the season could be rather monitored by the VCI. Correlation of vegetation condition and precipitation indicated areas experiencing significant vegetation productivity trends showing low and even negative correlation coefficients indicating other drivers for productivity change and drought impact besides rainfall.

27 January 2017 in Jàmbá: Journal of Disaster Risk Studies
Verified
Journal Article
Open access
PDF file
FMFummi Muyambo
Fummi Muyambo
Yonas BahtaYonas Bahta
Yonas Bahta
AJAndries Jordaan
Andries Jordaan
Even though the significance of indigenous knowledge in agriculture is internationally recognised, the role thereof in disaster risk reduction in South Africa is not well documented. This article determined the influence of indigenous knowledge in drought risk reduction in O.R. Tambo district of the Eastern Cape province (South Africa). Primary data were collected from 87 communal farmers through purposive sampling using a structured questionnaire. Focus group discussions were also held with the target group (farmers and extension officers) to gain more information and clarification on indigenous knowledge. The finding indicated that the majority of respondents (64.4%) relied on indigenous knowledge in their farming practice and drought risk reduction. Two-thirds (66.7%) of the respondents revealed that indigenous knowledge contributed to the resilience of farmers towards drought. The respondents unanimously agreed that indigenous knowledge is losing its significance in farming and drought risk reduction, because the younger generation did not value it anymore. Lack of documentation and deterioration of its application by the younger generation were found to be the main challenge for most respondents. The study concluded that indigenous knowledge was still an integral part of agricultural practices, applied drought risk reduction strategies and contributed to resilience against disasters. Based on the findings, the study recommends that indigenous knowledge be compiled, documented and published so that all farmers can learn of effective farming practices, passed on from generation to generation. Community holders of such information are encouraged to make younger generations aware of the benefits of indigenous knowledge to promote its usage.

11 April 2018 in African Journal of Range & Forage Science
Verified
Journal Article
Closed access
MMMuluken Mekuyie
Muluken Mekuyie
AJAndries Jordaan
Andries Jordaan
YMYoseph Melka
Yoseph Melka
The present study was conducted in the southern Afar Region in Ethiopia to analyse the trends of land-use and land-cover changes and their drivers in the period 1985 to 2015 using remote sensing, field observation, focus group discussions and semi-structured interviews. A substantial loss of grassland cover (64.5%), moderate decline of cultivated land (24%) and a considerable increase in bush and shrub land cover (114.3%) occurred between 1985 and 2015. Consequently, pastoralist’s access to rangeland resources and farmlands was highly restricted, thus putting the pastoral production system under increasing threat. A 13.3% decline of bare land was also observed during the same period. The results further indicated that policy, climate change, and variability, biotic factors including population growth, overgrazing, Prosopis juliflora seed dispersal via livestock’s fecal droppings and seed germination potential of P. juliflora under moisture stress were the most important drivers of land-use and land-cover ...