Dynamics of populations, movements and responses to climatic changes in North Africa and the Nile Valley

1997 ◽  
Vol 12 (1-2) ◽  
pp. 25-31 ◽  
Author(s):  
B. E. Barich
1988 ◽  
Vol 29 (2) ◽  
pp. 145-176 ◽  
Author(s):  
Angela E. Close

This article reports on developments in archaeological research in North Africa during the last four years, as these are reflected in the 350, or thereabouts, radiocarbon (and thermoluminescence) dates that have appeared since the last review. The number of new dates, and new data, becoming available indicate that North African archaeology is flourishing, although, in contrast to the earlier decades of this century, the focus seems now to be moving toward the eastern part of the region, and toward matters of adaptation rather than of simple classification, as exemplified by the new interpretations of the Dhar Tichitt Neolithic in Mauritania.The lower Nile Valley has yielded evidence for an intensification of subsistence activities in the Late Palaeolithic in two areas, Makhadma and Kubbaniya, both involving fish-harvesting and the latter also witnessing the use of plant-foods on a scale hitherto undocumented for this period.At the beginning of the Holocene, there is now good evidence for an eighth millennium bc Neolithic in northern Niger, complete with sophisticated ceramics, which complements the evidence already known for similar phenomena further east in the Sahara. There is even a possibility that the Khartoum Mesolithic of the central Nile Valley might be equally old. Our understanding of the Sudanese Neolithic has greatly increased. For the first time, there appears to be a development from the Khartoum Mesolithic into the Khartoum Neolithic, albeit located outside the Valley. The Khartoum Neolithic is more or less confined to the fourth millennium bc, but did give rise to the later Kadada Neolithic. After Kadada, the focus of settlement seems to have shifted outside the Valley until Meroitic times.In the protohistoric and historic periods, we have a better understanding of the chronology of the Egyptian Predynastic, although not yet of its development; what models exist will be radically modified if the pyramids are indeed as old as the dates on them now indicate. Finally, far from the Nile Valley in northern Niger, there comes detailed evidence of the development of a precocious metallurgical tradition within a Neolithic context.


Antiquity ◽  
1939 ◽  
Vol 13 (52) ◽  
pp. 389-402 ◽  
Author(s):  
R. F. Peel

The two volumes of rock-drawings from southern Upper Egypt collected by Dr H. A. Winkler, and published by the Egypt Exploration Society, together form a work of the utmost interest and importance to all interested in the archaeology and ethnology of North Africa. In the first volume, published in 1938, Dr Winkler included a selection of the material collected from the deserts east of the Nile and from the Nile valley itself. In the second volume, just published, the drawings and paintings are all from the deserts west of the Nile and cover three main regions : first the edges of the Nile valley itself from Qena to Aswan ; secondly the regions between the Nile and Kharga; and thirdly certain parts of the central Libyan Desert towards the extreme south-western frontiers of Egypt, in particular the mountain ‘ desert oasis ’ of Gebel ’Uweinat.


2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
Mohamed A. Daw ◽  
Abdallah El-Bouzedi ◽  
Mohamed O. Ahmed ◽  
Aghnyia A. Dau ◽  
Mohamed M. Agnan

Hepatitis C virus is a major public health threat associated with serious clinical consequences worldwide. North Africa is a unique region composed of seven countries that vary considerably in the predisposing factors to microbial diseases both historically and at the present time. The dynamics of HCV in the region are not well documented. The data are both limited and controversial in most of the countries in the region. In North Africa, the epidemiology of HCV is disparate and understanding it has been hampered by regional “epidemiological homogeneity” concepts. As the dynamics of HCV vary from country to country, context-specific research is needed. In this review, we assess studies performed in each country in the general populations as well as among blood donors and groups exposed to the HCV infection. The reported prevalence of HCV ranges from 0.6% to 8.4% in the Maghreb countries and is predominated by genotype 1. In the Nile valley region, it ranges from 2.2% to 18.9% and is dominated by genotype 4. In North African countries, HCV seems to be a serious problem that is driven by different vectors even in different geographical locations within the same country. Efforts should be combined at both the national and regional levels to implement efficient preventive and treatment strategies.


1978 ◽  
Vol 8 (4) ◽  
pp. 23-29
Author(s):  
Yohannis Abate

Africa is now the least urbanized of the continents but is becoming more so at one of the fastest rates in the world. The history of urbanization in Africa predates the birth of Christ; it may have developed as early as 3500 B.C. in the flood plain of the lower Nile for control and administration of the Nile Valley by the Pharaohs, though most of the ancient and pre-colonial African urban centers are now insignificant towns and some have become extinct. Between 1500 B.C. and 500 A.D., the Mediterranean coast of North Africa saw the creation of many cities, which flourished because of trade between the Phoenicians and Carthaginians.


Author(s):  
Robert Morkot

Scholarly attitudes to the regions south of Egypt have changed significantly in recent decades. Despite this, the terminology of the first archaeologists persists as do some ideas about cultural and political development. Although much recent excavation has added considerably to our knowledge of cultures, their development, and range, some historical issues remain unresolved. Survey in the western deserts has revealed much about climatic changes and settlement patterns, and also challenged ideas about Egyptian activities remote from the Nile Valley.


2009 ◽  
Vol 30 (2) ◽  
pp. 273-282 ◽  
Author(s):  
Michael Robinson ◽  
Nicholas Arnold ◽  
Salvador Carranza

AbstractPhylogenetic analysis of 1117 bp of mitochondrial DNA sequences (731 bp of cytochrome b and 386 bp of 16S rRNA) indicate that Echis consists of four main clades: E. ocellatus, and the E. coloratus, E. pyramidum, and E. carinatus groups. In the E. coloratus group, E. coloratus itself shows substantial genetic divergence from E. omanensis, corroborating their separate species status. In the E. pyramidum clade, E. pyramidum from Egypt and E. leucogaster from West Africa are genetically very similar, even though samples are separated by 4000 km. South Arabian populations of the E. pyramidum group are much better differentiated from these and two species may be present, animals from Dhofar, southern Oman probably being referable to E. khosatzkii. In the E. carinatus group, specimens of E. carinatus sochureki and E. multisquamatus are very similar in their DNA. The phylogeny indicates that the split between the main groups of Echis was followed by separation of African and Arabian members of the E. pyramidum group, and of E. coloratus and E. omanensis. The last disjunction probably took place at the lowlands that run southwest of the North Oman mountains, which are likely to have been intermittently covered by marine incursions; they also separate the E. pyramidum and E. carinatus groups and several sister taxa of other reptiles. The E. carinatus group may have spread quite recently from North Oman into its very extensive southwest Asian range, and there appears to have been similar expansion of E. pyramidum (including E. leucogaster) in North Africa. Both these events are likely to be associated with the marked climatic changes of the Pleistocene or late Pliocene. Similar dramatic expansions have also recently occurred in three snake species in Iberia.


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