Abstract
BackgroundThis study represents the first in-depth ethnobotanical study in the province of Uíge in northern Angola and documents the traditional knowledge of the Bakongo people living in the area. Due to deforestation and frequent fires, degraded savannahs dominate the landscape in the study region. Here we provide a list of useful plants from these savannahs including quantitative data about cultural importance of the respective species, aiming on the one hand to conserve the local knowledge and on the other hand to create a reliable basis for research projects in the region.MethodsField work was conducted in April and May 2014 in 5 municipalities of Uíge province. The study is based on 32 semi-structured and free-listing interviews, group discussions of varying scope and 14 field trips, involving a total of 82 informants. Throughout the course of the study herbarium specimens of the useful species were collected for later identification. Cultural importance index was applied to analyse the data sets recorded and to determine the best-known useful species in the region. All data sets were compared to the literature available for the region.ResultsThe study documents a total of 498 citations for the use of 122 plants from 48 families, 34.0 % of which were unknown according to the literature used for comparison. The high amount (71 %) of medical use-reports indicates that plants still play a crucial role in rural health care. We identified 14 plant species of special interest for pharmacological analysis. Species of highest cultural importance are Annona senegalensis Pers. and Sarcocephalus latifolius (Sm.) E.A., both of which are frequently found in disturbed savannahs.ConclusionsThe study points out the importance of savannahs even if degraded in terms of useful plants and provides a valuable addition to current knowledge of plant use in Northern Angola. This is not only essential for further studies, i.e. regarding pharmaceutical agents, but also for the design of a planned botanical garden of the University Kimpa Vita in Uíge, which aims at communicating the findings to the local people.
Highlights
This study represents the first in-depth ethnobotanical study in the province of Uíge in northern Angola and documents the traditional knowledge of the Bakongo people living in the area
A recent study of Urso et al [9] offers first quantitative data for the province of Namibe in the south-west of the country. Their survey emphasizes the importance of plants to both cultural identity and livelihood strategies in the area and identifies a high amount of species that were until not known for their ethnobotanical importance
The most commonly used plant families are Fabaceae (13.1 %), Asteraceae (13.1 %), Euphorbiaceae (6.6 %), Lamiaceae (6.6 %) and Malvaceae (5.7 %), all of which are widely distributed in Angola [31]
Summary
This study represents the first in-depth ethnobotanical study in the province of Uíge in northern Angola and documents the traditional knowledge of the Bakongo people living in the area. We provide a list of useful plants from these savannahs including quantitative data about cultural importance of the respective species, aiming on the one hand to conserve the local knowledge and on the other hand to create a reliable basis for research projects in the region. A recent study of Urso et al [9] offers first quantitative data for the province of Namibe in the south-west of the country. Their survey emphasizes the importance of plants to both cultural identity and livelihood strategies in the area and identifies a high amount of species that were until not known for their ethnobotanical importance. Due to 40 years of Civil War and War of Independence, a lot of research needs to be done in this field
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