scholarly journals Preface: Understanding spatio-temporal variability of water resources and the implications for IWRM in semi-arid eastern and southern Africa

Author(s):  
Hodson Makurira ◽  
Dominic Mazvimavi ◽  
Evison Kapangaziwiri ◽  
Jean-Marie Kileshye Onema ◽  
Webster Gumindoga

CATENA ◽  
2019 ◽  
Vol 172 ◽  
pp. 528-546 ◽  
Author(s):  
Ekrem Lutfi Aksakal ◽  
Kenan Barik ◽  
Ilker Angin ◽  
Serdar Sari ◽  
Khandakar Rafiq Islam

Africa south of the Equator has a low population density which reflects the scarcity of reliable supplies of potable water. Productive agricultural methods have been demonstrated and are practised on advanced enterprises throughout the subcontinent, but most of the population still live by subsistence agriculture which is increasingly destructive of soil and water resources as numbers increase. Higher priority for agriculture, better rewards and status for food producers and the urgent application of known techniques of soil conservation are all necessary if the semi-arid areas of southern Africa are to feed their increasing populations.


Author(s):  
Manuel Will

The Sibudan is a technocomplex within the cultural stratigraphy of the southern African Middle Stone Age (MSA), first formulated in 2012. The term was introduced as a working concept to organize the spatio-temporal variability in material culture among the archaeological record following the Howiesons Poort during Marine Isotope Stage 3 (MIS 3; ~59–24 ka). In contrast to the more widely used name “post-Howiesons Poort” (“post-HP”)—an umbrella term resting primarily upon temporal aspects—the Sibudan possesses a formal definition based on characteristic elements of its lithic technology. The site of Sibudu, located in the eastern part of southern Africa (KwaZulu-Natal), serves as type locality since it has yielded a rich and high-resolution record of modern human occupations during MIS 3. The Sibudan type sequence at Sibudu, dated to ~58 ka and encompassing twenty-three layers, features both characteristic traits and diachronic variability. The consistent techno-typological elements include predominantly local raw material procurement, concomitant use of multiple core reduction methods (Levallois, discoid, platform, and bipolar), manufacture of flake and blade assemblages, as well as soft stone hammer percussion for blades. Temporal variability exists in the proportions and morphologies of tools and unifacial points in particular—including Tongati, Ndwedwe, and asymmetric convergent tools—the presence of bifacial points, as well as the frequency of blank types and different core reduction methods. Comparative studies since 2014 suggest a spatio-temporal extension of the Sibudan in the eastern part of southern Africa during early MIS 3 (~58–50 ka), with marked differences to assemblages of similar ages along the southern coast and Western Cape. The concept is thus not a direct substitute or congruent with the “post-HP” and “Sibudu technocomplex.” On a more interpretive level, the Sibudan has featured in discussions on the trajectory of cultural evolution among early modern humans, the scale and mechanisms of behavioral change during the MSA, and theoretical debate on the relevance of technocomplexes.


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