Carnivore Size and Quaternary Climatic Change in Southern Africa

1986 ◽  
Vol 26 (1) ◽  
pp. 153-170 ◽  
Author(s):  
Richard G. Klein
Keyword(s):  
South Africa ◽  
Southern Africa ◽  
Late Quaternary ◽  
Geochemical Data ◽  
Mathematical Relationship ◽  
Carnivore Species ◽  
Quantitative Estimates ◽  
The Relationship ◽  
Problematic Aspect ◽  
Cool Conditions

The relationship between carnassial length and latitude south is analyzed for 17 African carnivore species to determine if individuals tend to be larger in cooler climates, as predicted by Bergmann's Rule. With modern data in support, middle and late Quaternary temperatures might then be inferred from mean carnassial length in fossil samples, such as those from Equus Cave, Elandsfontein, Sea Harvest. Duinefontein, and Swartklip in the Cape Province of South Africa. One problematic aspect of the study is the use of carnassial length and latitude as necessary but imperfect substitutes for body size and temperature, respectively. For some species, another difficulty is the relatively small number of available modern specimens, combined with their uneven latitudinal spread. Still, in 14 of the species, carnassial length does tend to increase with latitude south, while mean carnassial length in the same species tends to be greater in those fossil samples which accumulated under relatively cool conditions, as inferred from sedimentologic, palynological, or geochemical data. Given larger modern samples from a wide variety of latitudes, refinement of the mathematical relationship between carnassial length and latitude in various species may even permit quantitative estimates of past temperatures in southern Africa.

Non-Electoral Executive Turnover and Low-Capacity Democracy in Southern Africa

2021 ◽  
Vol 56 (2) ◽  
pp. 194-215
Author(s):  
Nathan Munier
Keyword(s):  
South Africa ◽  
Southern Africa ◽  
Executive Turnover ◽  
Dominant Party ◽  
Executive Authority ◽  
Dominant Parties ◽  
The Relationship ◽  
Insight Into

What do non-electoral turnovers tell us about the relationship between elections, executive turnover, and democratisation? Can they contribute to democratisation? To gain insight into these questions, we consider the experiences of Southern Africa. While transfers of executive authority have become commonplace in Southern Africa, they do not necessarily coincide with elections and rarely involve partisan turnover. Neither the mode nor the form of executive turnover corresponds clearly with prior assessments of democracy. This study examines recent non-electoral turnovers in Zimbabwe (November 2017), South Africa (February 2018), and Botswana (April 2018). This research finds that non-electoral transfers of presidential authority in Southern Africa represent efforts by dominant parties to manage factional conflicts and enhance their ability to benefit from incumbency in competitive elections. While non-electoral turnover in executive authority might promote democracy under some conditions, they do more to sustain dominant party rule and a stagnate level of low-capacity democracy.

Elemental proxy evidence for late Quaternary palaeoenvironmental change in southern African sedimentary records: interpretation and applications

2021 ◽  
Author(s):  
M.S. Humphries
Keyword(s):  
Environmental Change ◽  
Southern Africa ◽  
Southern Oscillation ◽  
Late Quaternary ◽  
Rainfall Variability ◽  
Analytical Techniques ◽  
Summer Rainfall ◽  
Geochemical Data ◽  
Complex Nature ◽  
Cape Coast

Abstract Sediments are the most important source of Late Quaternary palaeoclimate information in southern Africa, but have been little studied from a geochemical perspective. However, recent advances in analytical techniques that allow rapid and near-continuous elemental records to be obtained from sedimentary sequences has resulted in the increasing use of elemental indicators for reconstructing climate. This paper explores the diverse information that can be acquired from the inorganic component of sediments and reviews some of the progress that has been made over the last two decades in interpreting the climatic history of southern Africa using elemental records. Despite the general scarcity of elemental records, excellent examples from the region exist, which provide some of the longest and most highly resolved sequences of environmental change currently available. Records from Tswaing crater and marine deposits on the southern KwaZulu-Natal coastline have provided rare glimpses into hydroclimate variability over the last 200 000 years, suggesting that summer rainfall in the region responded predominantly to insolation forcing on glacial-interglacial timescales. Over shorter timescales, lakes and wetlands found in the Wilderness embayment on the southern Cape coast and along the Maputaland coast in north-eastern South Africa have yielded highly-resolved elemental records of Holocene environmental change, providing insight into the changing interactions between tropical (e.g., El Niño-Southern Oscillation) and temperate (e.g., mid-latitude westerlies) climate systems affecting rainfall variability in the region. The examples discussed demonstrate the multiple environmental processes that can be inferred from elemental proxies and the unique insight this can provide in advancing our understanding of past climate change on different timescales. The interpretation of geochemical data can be complicated by the complex nature of sedimentary environments, various proxy assumptions and analytical challenges, and the reliability of sediment-based climate reconstructions is substantially enhanced through multi-proxy approaches.

International Sanctions: A Framework for Analysis with Special Reference to the UN and Southern Africa

1972 ◽  
Vol 26 (3) ◽  
pp. 527-550 ◽  
Author(s):  
Margaret Doxey
Keyword(s):  
South Africa ◽  
International Economic ◽  
United Nations ◽  
Special Reference ◽  
Southern Africa ◽  
Economic Sanctions ◽  
The Status ◽  
International Sanctions ◽  
The Relationship

This paper falls into two main parts. In Part I an attempt is made to develop a simple framework which can be used for analyzing the role of sanctions, with special reference to international sanctions.1In Part II this framework is used to investigate the status of the United Nations as a sanctioning body and, in particular, the relationship between the UN and Southern Africa where Rhodesia has been subjected to international economic sanctions since 1965 and South Africa has been under threat of similar measures since the early 1960s.2

Size Variation in the Rock Hyrax (Procavia capensis) and Late Quaternary Climatic Change in South Africa

1996 ◽  
Vol 46 (2) ◽  
pp. 193-207 ◽  
Author(s):  
Richard G. Klein ◽  
Kathryn Cruz-Uribe
Keyword(s):  
South Africa ◽  
South African ◽  
Late Quaternary ◽  
Size Variation ◽  
Food Plants ◽  
Adult Size ◽  
Rock Hyrax ◽  
Mean Size ◽  
Procavia Capensis ◽  
The Relationship

The average adult size of the rock hyrax varies greatly across South Africa. Regression analysis suggests that mean hyrax size is more closely linked to precipitation than to temperature, probably because precipitation has a much greater impact on preferred hyrax food plants. The relationship between mean size and precipitation is curvilinear, such that size increases up to about 700 mm/annum and declines thereafter. This parallels a tendency for less palatable grasses to replace more palatable ones where rainfall exceeds 700 mm/annum. In conjunction with other indicators of past climate, hyrax size variation can be used to reconstruct precipitation history near deeply stratified South African late Quaternary sites, including Elands Bay Cave, Die Kelders Cave 1, and Nelson Bay Cave.

Stratigraphy of late Quaternary mountain slope landforms and deposits in southern Africa and their significance for the dynamics of mountain sediment systems

2021 ◽  
Author(s):  
J. Knight ◽  
S.W. Grab
Keyword(s):  
South Africa ◽  
Southern Africa ◽  
Late Quaternary ◽  
Sediment Supply ◽  
Eastern Cape ◽  
Mountain Slope ◽  
Quantitative Evidence ◽  
Gravity Driven ◽  
Great Escarpment ◽  
Steep Slopes

Abstract Mountains are areas of high potential sediment yield due to their steep slopes and generally cool, wet climates. Mountain sediments are moved by gravity-driven and often cryogenically-influenced processes, and captured within valleys or footslopes in the form of screes, alluvial/colluvial fans and terraces, or on hillslopes in the form of solifluction sheets, debris lobes/ridges and openwork block deposits. This study critically examines the geomorphic, sedimentary, stratigraphic and dating evidence from cryogenically-influenced late Quaternary slope deposits found along the highest sectors of the Great Escarpment in the Eastern Cape Province (South Africa) and Maloti–Drakensberg range (Lesotho, and KwaZulu-Natal Province, South Africa). This evidence is set in the context of mountain weathering and erosion/transportation processes during the late Quaternary, and the dynamics of such sedimentary systems. Despite many general reports and observations, there is little detailed and quantitative evidence for late Quaternary slope processes, products and stratigraphy in southern Africa. This study integrates the existing morphological, sedimentary and dating evidence to examine mountain slope evolution in southern Africa based on the conceptual framework of sediment cascades. Application of this framework can help explain the spatial and temporal differences in sediment supply and dynamics observed in different sectors of the Great Escarpment during the late Quaternary.

scholarly journals Between Principles & Power: Water Law Principles & the Governance of Water in Post-Apartheid South Africa

Daedalus ◽  
2021 ◽  
Vol 150 (4) ◽  
pp. 220-239
Author(s):  
Heinz Klug
Keyword(s):  
South Africa ◽  
Water Resources ◽  
Southern Africa ◽  
International Agreements ◽  
Water Law ◽  
Constitutional Rights ◽  
Access To Water ◽  
The Relationship

Abstract Debates over the management and allocation of water in the postcolonial era, and in post-apartheid South Africa in particular, reveal that struggles over water resources in Southern Africa occur within three broad frames: the institutional, the hydrological, and the ideological. Each of these realms reflects tensions in the relationship between power and principle that continue to mark the governance of water. Each perspective offers a way to understand the use and the limits of law in the management of a country's water resources. The existence of explicit principles, whether as policy guidelines, constitutional rights, or in the language of regional and international agreements, provides two important resources for those who struggle for access to water. First, a vision of a more just allocation of this fundamental resource and, second, an articulation of common benchmarks to which states and governments might be held to account.

scholarly journals Seasonal influences on surface ozone variability in continental South Africa and implications for air quality

2018 ◽  
Author(s):  
Tracey Leah Laban ◽  
Pieter Gideon van Zyl ◽  
Johan Paul Beukes ◽  
Ville Vakkari ◽  
Kerneels Jaars ◽  
...  
Keyword(s):  
South Africa ◽  
Air Quality ◽  
South African ◽  
Biomass Burning ◽  
Southern Africa ◽  
Seasonal Changes ◽  
The North ◽  
North Eastern ◽  
The Relationship ◽  
Surface O3

Abstract. Although elevated ozone (O3) concentrations are observed in many areas within continental southern Africa, few studies have investigated the regional atmospheric chemistry and dominant atmospheric processes driving surface O3 formation in this region. The aim of this study was to conduct an assessment of comprehensive continuous surface O3 measurements performed at four sites located in continental South Africa. These sites were representative of regional background (Welgegund and Botsalano) and industrial regions (Marikana and Elandsfontein) in the north-eastern interior in South Africa as indicated by comparison with other sites in this region. The regional O3 problem was also shown with O3 concentrations being higher than 40 ppb at many sites in the north-eastern interior, while the South African air quality standard limit for O3 was regularly exceeded at the four sites in this study. O3 levels were generally lower at other background sites in the Southern Hemisphere compared to the South African sites, while similar seasonal patterns were observed. The temporal O3 patterns observed at the four sites resembled typical trends for O3 in continental South Africa, i.e. O3 concentration peaking in late winter and early spring, and daytime O3 peaks associated with increased photochemical production. The seasonal O3 trends observed in continental South Africa were mainly attributed to the seasonal changes in emissions of O3 precursor species and changes in meteorological conditions. Increased O3 concentrations in winter were indicative of increased emissions of O3 precursors from household combustion for space heating and the concentration of low-level pollutants near the surface. A spring maximum was observed at all the sites, which was attributed to increased regional biomass burning during this time. Source area maps of O3 and CO indicated significantly higher O3 and CO concentrations associated with air masses passing over a region where a large number of seasonal open biomass burning occurred in southern Africa, which indicated CO associated with open biomass burning as a major source of O3 in continental South Africa. The relationship between O3, NOx and CO indicated a strong dependence of O3 on CO, while O3 levels remained relatively constant or decreased with increasing NOx. The seasonal changes in the relationship between O3 and precursors species also reflected the seasonal changes in sources of precursors. The instantaneous production rate of O3, P(O3), calculated at Welgegund indicated that at least 40 % of O3 production occurred in the VOC-limited regime. These relationships between O3 concentrations and P(O3) with O3 precursor species revealed that large parts of the regional background in continental South Africa can be considered CO- or VOC-limited, which can be attributed to high anthropogenic emissions of NOx in the interior of South Africa. It was indicated that the appropriate emission control strategy should be CO (and VOC) reduction associated with household combustion and regional open biomass burning to effectively reduce O3 pollution in continental South Africa.

Region of Birth and Child Mortality among Black Migrants to South Africa: Is there a foreign-born advantage?

2016 ◽  
Vol 13 (3) ◽  
pp. 359-376 ◽  
Author(s):  
Tiffany L Green ◽  
Amos C Peters
Keyword(s):  
South Africa ◽  
South African ◽  
Child Mortality ◽  
Southern Africa ◽  
Strong Relationship ◽  
Developed Countries ◽  
Black Immigrants ◽  
Foreign Born ◽  
Region Of Origin ◽  
Child Deaths

Much of the existing evidence for the healthy immigrant advantage comes from developed countries. We investigate whether an immigrant health advantage exists in South Africa, an important emerging economy.  Using the 2001 South African Census, this study examines differences in child mortality between native-born South African and immigrant blacks.  We find that accounting for region of origin is critical: immigrants from southern Africa are more likely to experience higher lifetime child mortality compared to the native-born population.  Further, immigrants from outside of southern Africa are less likely than both groups to experience child deaths.  Finally, in contrast to patterns observed in developed countries, we detect a strong relationship between schooling and child mortality among black immigrants.

Reverend Doctor Sox Leleki and His Role in the Black Methodist Consultation

2019 ◽  
Vol 6 (2) ◽  
Author(s):  
Sonwabile Mancotywa
Keyword(s):  
South Africa ◽  
Southern Africa ◽  
Political Influence ◽  
Individual Member ◽  
Methodist Church ◽  
Role Players

The Methodist Church of Southern Africa (MCSA) is one of the mainline Christian denominations with a very good history. However, it was not immune from the larger political influence of South Africa that was polarised by apartheid. This article is intended to look at the formation known as the Black Methodist Consultation (BMC), which at that time had an individual member who played an important role in its development and activities. Sox Leleki was one of the key role players of this movement inside the Methodist Church

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