scholarly journals Areal patterns in the vowel systems of the Macro-Sudan Belt

2020 ◽  
Vol 24 (1) ◽  
pp. 113-179
Author(s):  
Nicholas Rolle ◽  
Florian Lionnet ◽  
Matthew Faytak
Keyword(s):  
Statistical Tests ◽  
Central Africa ◽  
West African ◽  
Sub Saharan Africa ◽  
East African ◽  
Language Varieties ◽  
Phonological Features ◽  
Vowel Systems ◽  
Sub Saharan ◽  
Heterogeneous Region

AbstractThis paper investigates the areal distribution of vowel systems in the Macro-Sudan Belt, an area encompassing most of the western and central parts of northern Sub-Saharan Africa. We report on a survey of 681 language varieties with entries coded for two phonological features: advanced tongue root (ATR) harmony and the presence of interior vowels (i.e. non-peripheral vowels [ɨ ɯ ɜ ə ʌ … ]). Our results show that the presence of ATR harmony in the Macro-Sudan Belt is limited to three geographically unconnected zones: an Atlantic zone, a West African zone, and an East African zone. Between the West and East African ATR Zones is a genetically heterogeneous region where ATR harmony is systematically absent: we term this the Central African ATR-deficient zone. Our results show that in this same Central African zone, phonemic and allophonic interior vowels are disproportionately prevalent. Based on this distribution, we highlight two issues. First, ATR and interiority have an antagonistic relationship and do not commonly co-occur within vowel systems; this finding is supported through statistical tests. Second, our survey supports the existence of the Macro-Sudan Belt, but the discontinuous distribution of ATR harmony and its systematic absence in Central Africa challenges the proposal that this area represents the ‘hotbed’ of the Macro-Sudan Belt.

scholarly journals The distribution of advanced tongue root harmony and interior vowels in the Macro-Sudan Belt

2017 ◽  
Vol 2 ◽  
pp. 10 ◽  
Author(s):  
Nicholas Revett Rolle ◽  
Matthew Faytak ◽  
Florian Lionnet
Keyword(s):  
Central Africa ◽  
Strong Relationship ◽  
West African ◽  
East African ◽  
The West ◽  
Language Varieties ◽  
Phonological Features ◽  
Vowel Systems ◽  
Chi Squared ◽  
Heterogeneous Region

In this paper we investigate the distribution of vowel systems in the Macro-Sudan Belt, an area of Western and Central Africa proposed in recent areal work (Güldemann 2008, 2011; Clements & Rialland 2008). We report on a survey of 615 language varieties with entries coded for two phonological features: advanced tongue root (ATR) harmony and the presence of interior vowels (i.e. non-peripheral vowels, such as [ɨ ɯ ɜ ə ʌ …]). Our results show that the presence of ATR harmony in the Macro-Sudan Belt is limited to three separated zones: an Atlantic ATR Zone, a West African ATR Zone, and an East African ATR Zone, all geographically unconnected to one another. We additionally show that between the West and East African ATR Zones is a geographically extensive, genetically heterogeneous region of Central Africa where ATR harmony is systematically absent which we term the Central African ATR-less Zone. Our results also show a large region where phonemic and allophonic interior vowels are disproportionately prevalent, which we term the Central African Interior Vowel Zone. This zone noticeably overlaps with the Central African ATR-less Zone, suggesting that ATR and interiority have an antagonistic relationship. Chi-squared tests support the presence of a strong relationship between the two types of vowel contrasts.

scholarly journals First Report of East African Cassava Mosaic Begomovirus in Nigeria

Plant Disease ◽  
1999 ◽  
Vol 83 (4) ◽  
pp. 398-398 ◽  
Author(s):  
F. O. Ogbe ◽  
G. I. Atiri ◽  
D. Robinson ◽  
S. Winter ◽  
A. G. O. Dixon ◽  
...  
Keyword(s):  
Central Africa ◽  
Mosaic Disease ◽  
Sub Saharan Africa ◽  
Cassava Mosaic Disease ◽  
Enzyme Linked Immunosorbent Assay ◽  
East African ◽  
African Countries ◽  
Manihot Esculenta Crantz ◽  
Cross River State ◽  
Sub Saharan

Cassava (Manihot esculenta Crantz) is an important food crop in sub-Saharan Africa. One of the major production constraints is cassava mosaic disease caused by African cassava mosaic (ACMV) and East African cassava mosaic (EACMV) begomoviruses. ACMV is widespread in its distribution, occurring throughout West and Central Africa and in some eastern and southern African countries. In contrast, EACMV has been reported to occur mainly in more easterly areas, particularly in coastal Kenya and Tanzania, Malawi, and Madagascar. In 1997, a survey was conducted in Nigeria to determine the distribution of ACMV and its strains. Samples from 225 cassava plants showing mosaic symptoms were tested with ACMV monoclonal antibodies (MAbs) in triple antibody sandwich enzyme-linked immunosorbent assay (1). Three samples reacted strongly with MAbs that could detect both ACMV and EACMV. One of them did not react with ACMV-specific MAbs while the other two reacted weakly with such MAbs. With polymerase chain reaction (2), the presence of EACMV and a mixture of EACMV and ACMV in the respective samples was confirmed. These samples were collected from two villages: Ogbena in Kwara State and Akamkpa in Cross River State. Co-infection of some cassava varieties with ACMV and EACMV leads to severe symptoms. More importantly, a strain of mosaic geminivirus known as Uganda variant arose from recombination between the two viruses (2). This report provides evidence for the presence of EACMV in West Africa. References: (1) J. E. Thomas et al. J. Gen. Virol. 67:2739, 1986. (2) X. Zhou et al. J. Gen. Virol. 78:2101, 1997.

Proceedings of the African Pathologists Summit; March 22–23, 2013; Dakar, Senegal: A Summary

2014 ◽  
Vol 139 (1) ◽  
pp. 126-132 ◽  
Author(s):  
African Pathologists' Summit Working Groups
Keyword(s):  
Clinical Pathology ◽  
West African ◽  
Sub Saharan Africa ◽  
East African ◽  
Laboratory Service ◽  
Medical College ◽  
The Status ◽  
Sub Saharan ◽  
American Society ◽  
International Academy

Context This report presents the proceedings of the African Pathologists Summit, held under the auspices of the African Organization for Research and Training in Cancer. Objectives To deliberate on the challenges and constraints of the practice of pathology in Sub-Saharan Africa and the avenues for addressing them. Participants Collaborating organizations included the American Society for Clinical Pathology; Association of Pathologists of Nigeria; British Division of the International Academy of Pathology; College of Pathologists of East, Central and Southern Africa; East African Division of the International Academy of Pathology; Friends of Africa–United States and Canadian Academy of Pathology Initiative; International Academy of Pathology; International Network for Cancer Treatment and Research; National Cancer Institute; National Health and Laboratory Service of South Africa; Nigerian Postgraduate Medical College; Royal College of Pathologists; West African Division of the International Academy of Pathology; and Faculty of Laboratory Medicine of the West African College of Physicians. Evidence Information on the status of the practice of pathology was based on the experience of the participants, who are current or past practitioners of pathology or are involved in pathology education and research in Sub-Saharan Africa. Consensus Process The deliberations were carried out through presentations and working discussion groups. Conclusions The significant lack of professional and technical personnel, inadequate infrastructure, limited training opportunities, poor funding of pathology services in Sub-Saharan Africa, and their significant impact on patient care were noted. The urgency of addressing these issues was recognized, and the recommendations that were made are contained in this report.

scholarly journals Afrikai citerák

2021 ◽  
Vol 14 (3-4.) ◽  
pp. 47-73
Author(s):  
József Brauer-Benke
Keyword(s):  
Indian Ocean ◽  
West Africa ◽  
Atlantic Coast ◽  
Central Africa ◽  
Sub Saharan Africa ◽  
East African ◽  
Population Movements ◽  
Instrument Type ◽  
The Indian Ocean ◽  
Sub Saharan

A general historical survey of African zither types cannot fail to highlight the disproportionalities brought about in the study of Africa by the essentialistic ideology of Afrocentrism. Thus the widely known videoclip of the 1987 hit Yé-ké-yé-ké by the late Mory Kante (d. 22nd May 2020), musician and composer of Guinean Mandinka origin has allowed millions to experience the kora harp lute with which he accompanied his song and popularized this instrument as well as the musical tradition of the West African griots, while the obviously related mvet harp zither is scarcely known today. This despite the fact that both the latter instrument type and its specialists, the mbomo mvet master singers, played a very similar role in the cultures of the Central African chiefdoms, as did the nanga bards playing the enanga trough zither in the East African kingdoms. Another important and interesting historical insight provided by a careful morphological and etymological analysis of African zither types and their terminology that takes comparative account of South and Southeast Asian data and ethnographic parallels concerns the possibility of borrowings. Thus stick and raft zither types may well have reached the eastern half of West Africa and the northeastern part of Central Africa – several centuries prior to the era of European geographical explorations – owing to population movements over the Red Sea. It seems therefore probable that the African stick bridges harp zithers (in fact a sui generis instrument type rather than a subtype of zithers) developed from South Asian stick zither types. On the other hand, tube zithers and box zithers – fretted-enhanced versions of the stick zither – certainly reached Africa because of the migration of Austronesian-speaking groups over the Indian Ocean, since their recent ethnographic analogies have survived in Southeast Asia as well. By contrast types of trough zither, confined to East Africa, must have developed in Africa from box zither types, which are based on similar techniques of making the strings tense. The hypothesis of African zither types having originated from beyond the Indian Ocean is further strengthened by the absence of these instruments in such regions of Sub-Saharan Africa as the Atlantic coast of West Africa as well as in Northeast, Southwest and South Africa. Thus the historical overview of African zither types also helps refute the erroneous idea that prior to the arrival of European explorers and colonizers the continent was isolated from the rest of the world. In fact seafaring peoples such as the Austronesians, Chinese, Indians, Arabs and Persians did continually reach it, bringing with them cultural artifacts, production techniques and agricultural products among other things, which would then spread over large distances along the trade routes over Africa.

Regional Arrangements

2019 ◽  
pp. 121-156
Author(s):  
Eleanor M. Fox ◽  
Mor Bakhoum
Keyword(s):  
West African ◽  
Common Market ◽  
Sub Saharan Africa ◽  
East African ◽  
East African Community ◽  
Regional Coordination ◽  
African Community ◽  
The Common ◽  
Sub Saharan ◽  
Eastern And Southern Africa

This chapter studies regional coordination in sub-Saharan Africa. Regional arrangements occupy a significant part of African competition policy. The most integrative form of arrangement is a common market, wherein member states tear down trade barriers between and among them, create supranational authorities to oversee trade and competition, and even create monetary unions. The chapter then discusses selected regional groups; namely, the Common Market of Eastern and Southern Africa (COMESA), the Southern African Development Community (SADC), the East African Community (EAC), the West African Economic and Monetary Union (WAEMU), and the Economic Community of West African States (ECOWAS).

Bantu Genesis—Archaeological Reflexions

1968 ◽  
Vol 9 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Merrick Posnansky
Keyword(s):  
Central Africa ◽  
Sub Saharan Africa ◽  
East African ◽  
The West ◽  
East African Coast ◽  
Primary Cultivation ◽  
Sub Saharan ◽  
Iron Working ◽  
River Valleys ◽  
Valley Area

The article presents a reassessment of the archaeological background for the prehistory of the Bantu movements. The differences between the Channelled wares of Central Africa and the Dimple-based wares of East Africa are demonstrated and the greater abundance of Dimple-based ware sites noted. In both cases the distribution is largely in areas suitable for primary cultivation such as river valleys and lakeside areas. It is suggested that both wares are derived from pottery traditions originating to the west of their eastern African distribution areas. Recent evidence would indicate that iron working spread to sub-Saharan Africa both from West Africa and also, via the East African coast, from the Red Sea, and that the earliest iron-using peoples in southern Africa were probably not all negroes. It is also suggested that a negro foraging population was perhaps present in Central Africa before the arrival of agriculture. On agricultural origins, it is noted that some agriculture existed in the Rift valley area by perhaps as early as 1000 b.c., though the main expansion of agriculture is postulated as being of western origin. In conclusion it would appear that the West African origins of Bantu genesis are more important than suggested by Oliver in Journal of African History, Volume VII, and almost certainly antedate the 2000 years timescale previously advanced.

Women in Gabon

2021 ◽  
Author(s):  
Claire H. Griffiths
Keyword(s):  
Central Africa ◽  
Early Period ◽  
Sub Saharan Africa ◽  
African Women ◽  
Female Population ◽  
History Of ◽  
Sub Saharan ◽  
Tropical Woods ◽  
New Research ◽  
Export Revenue

Gabon, a small oil-rich country straddling the equator on the west coast of Africa, is the wealthiest of France’s former colonies. An early period of colonization in the 19th century resulted in disease, famine, and economic failure. The creation of French Equatorial Africa in 1910 marked the beginning of the sustained lucrative exploitation of Gabon’s natural resources. Gabon began off-shore oil production while still a colony of France. Uranium was also discovered in the last decade of the French Equatorial African empire. Coupled with rich reserves in tropical woods, Gabon has achieved, since independence in 1960, a higher level of export revenue per capita of population than any other country in sub-Saharan Africa in the postcolonial era. However, significant inequality has characterized access to wealth through paid employment throughout the recorded history of monetized labor. While fortunes have been amassed by a minute proportion of the female population of Gabon associated with the ruling regime, and a professional female middle-class has emerged, inequalities of opportunity and reward continue to mark women’s experience of life in this little-known country of West Central Africa. The key challenge facing scholars researching the history of women in Gabon remains the relative lack of historical resources. While significant strides have been made over the past decade, research on women’s history in Francophone Africa published in English or French remains embryonic. French research on African women began to make a mark in the last decade of colonization, notably with the work of Denise Paulme, but then remained a neglected area for decades. The publication in 1994 of Les Africaines by French historian Catherine Coquery-Vidrovitch was hailed at the time as a pioneering work in French historiography. But even this new research contained no analysis of and only a passing reference to women in Gabon.

scholarly journals Volcanic activity and hazard in the East African Rift Zone

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Juliet Biggs ◽  
Atalay Ayele ◽  
Tobias P. Fischer ◽  
Karen Fontijn ◽  
William Hutchison ◽  
...  
Keyword(s):  
Volcanic Activity ◽  
East African Rift ◽  
Volcanic Hazards ◽  
Crisis Response ◽  
Sub Saharan Africa ◽  
Rift System ◽  
East African Rift System ◽  
East African ◽  
Sub Saharan ◽  
African Rift

AbstractOver the past two decades, multidisciplinary studies have unearthed a rich history of volcanic activity and unrest in the densely-populated East African Rift System, providing new insights into the influence of rift dynamics on magmatism, the characteristics of the volcanic plumbing systems and the foundation for hazard assessments. The raised awareness of volcanic hazards is driving a shift from crisis response to reducing disaster risks, but a lack of institutional and human capacity in sub-Saharan Africa means baseline data are sparse and mitigating geohazards remains challenging.

An Historical Assessment and Analysis of Economic Imperialism in West Africa

2021 ◽  
pp. 1-17
Author(s):  
Ayokunle Olumuyiwa Omobowale ◽  
Natewinde Sawadogo
Keyword(s):  
West Africa ◽  
Civil Wars ◽  
National Development ◽  
West African ◽  
Sub Saharan Africa ◽  
Skilled Workers ◽  
The West ◽  
West African Coast ◽  
Sub Saharan ◽  
Economic Imperialism

Abstract The West African political economy has been shaped by the policies, decisions and actions of dominant European imperialist countries since about over 500 years. Starting with imperial merchant capitalism along the West African coast in the 16th Century and French gradual acquisition of Senegal as a colony as from 1677, West Africa has remained under the imperialist hold. West Africa remains economically dependent on its former colonial masters despite more than 60 years since the countries started gaining independence. The consequences of economic imperialism on West Africa have included exploitative resource extraction, proxy and resource influenced civil wars, illegal trade in natural resources, mass poverty, and external migration of skilled workers necessary for national development. The world sees and broadcasts poverty, starvation, conflict and Saharan migration in the West African sub-continent, but hardly reports the exploitative imperialistic processes that have produced poverty and misery in West Africa in particular and across sub-Saharan Africa in general.

Progressive Multifocal Leukoencephalopathy and JC Virus Genotypes in West African Patients With Acquired Immunodeficiency Syndrome

1999 ◽  
Vol 123 (5) ◽  
pp. 395-403
Author(s):  
Sylvester C. Chima ◽  
Hansjürgen T. Agostini ◽  
Caroline F. Ryschkewitsch ◽  
Sebastian B. Lucas ◽  
Gerald L. Stoner
Keyword(s):  
Progressive Multifocal Leukoencephalopathy ◽  
Acquired Immunodeficiency Syndrome ◽  
Jc Virus ◽  
West African ◽  
Sub Saharan Africa ◽  
Virus Genotypes ◽  
Acquired Immunodeficiency ◽  
Sub Saharan ◽  
African Patients ◽  
Immunodeficiency Syndrome

Abstract Objective—Progressive multifocal leukoencephalopathy is caused by polyomavirus JC in immunosuppressed patients. JC virus genotypes are identified by sequence analysis of the viral genome. Despite the prevalence of acquired immunodeficiency syndrome in sub-Saharan Africa, few cases of progressive multifocal leukoencephalopathy have been reported from this region. Here we describe 4 African cases and provide an analysis of viral genotypes. Methods.—Immunohistochemical staining by labeled streptavidin-biotin for capsid protein antigen was performed on all cases. Polymerase chain reaction amplification of viral genomic DNA was followed by direct cycle sequencing. Results.—JC virus type 3 was identified in 2 cases, and type 6 was isolated in 1 case. The viral regulatory region from 1 case showed an uncommon rearrangement pattern. Conclusions.—Progressive multifocal leukoencephalopathy in West African patients with acquired immunodeficiency syndrome is caused by African genotypes of JC virus (types 3 and 6). The prevalence of disease in this autopsy series from sub-Saharan Africa (1.5%) was less than has been reported from Europe and the United States (4% to 10%) and may be partly due to biological differences in JC virus genotypes. Further studies will be needed to confirm this observation.

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