Paradise lost: large mammal remains as a proxy for environmental change from MIS 6 to the Holocene in southern Africa

2021 ◽  
Author(s):  
J.P. Reynard
Keyword(s):  
Environmental Change ◽  
Southern Africa ◽  
Temporal Trends ◽  
Cape Floristic Region ◽  
Ecological Resilience ◽  
Eastern Region ◽  
Faunal Remains ◽  
Large Herbivores ◽  
The Holocene ◽  
Faunal Turnover

Abstract Analyses of faunal remains are a key means of inferring palaeoenvironmental change. In this paper, the use of faunal remains as a proxy for environmental conditions from Marine Isotope Stage 6 to the Holocene in southern Africa is reviewed. The focus of this review is on large herbivore abundance and how these fluctuate temporally and regionally in accordance with palaeo-climatic shifts. Here, southern Africa is divided into four eco-regions loosely based on climatic, biotic and zoogeographic traits: the Cape Floristic Region, the arid and semi-arid region, the savanna and grassland region, and the wetter eastern region. The relative abundance of large herbivores within these regions are noted, and temporal trends are inferred. On the whole, most eco-regions maintain similar herbivore compositions over time showing the regional ecological resilience of these taxa to local-scale environmental change. Yet some changes in faunal frequencies are apparent. The Cape Floristic Region shows evidence of significant faunal turnover from the Late Pleistocene to the Holocene. Here, grazers are significantly more abundant during glacial periods, probably linked to the terrestrial expansion of the palaeo-Agulhas coastal plain. Shifts in ungulate abundance in the currently xeric central interior, also indicate wetter periods in the Pleistocene. Holocene faunas are generally similar to historic distributions but shifts between xeric and mesic periods are also evident.

Faunal Exploitation Strategies During the Later Pleistocene in Southern Africa

2021 ◽  
Author(s):  
G. L. Dusseldorp ◽  
J.P. Reynard
Keyword(s):  
Southern Africa ◽  
Modern Human ◽  
Middle Stone Age ◽  
Faunal Remains ◽  
Large Herbivores ◽  
Subsistence Economies ◽  
Wide Range ◽  
Key Sites ◽  
Blombos Cave

The Late Pleistocene in southern Africa shows important developments in human subsistence economies. Zooarchaeological research indicates that early modern humans exploited a wide range of faunal species during the Middle Stone Age. Southern African societies developed flexible animal exploitation strategies that increased their resilience against the backdrop of drastic Pleistocene climatic changes. While megafauna are virtually absent, very large herbivores such as giant buffalo and dangerous prey such as suids were targeted with regularity. The study of faunal remains of such key sites as Border Cave, Blombos Cave, Klasies River, and Sibudu also played an important role in the development of overarching theories of the role of subsistence in the development of modern human behaviors through landmark studies by Richard Klein, Lewis Binford, and Curtis Marean, among others.

scholarly journals The Role of Mesoscale Convective Complexes in Southern Africa Summer Rainfall

2013 ◽  
Vol 26 (5) ◽  
pp. 1654-1668 ◽  
Author(s):  
R. C. Blamey ◽  
C. J. C. Reason
Keyword(s):  
South Africa ◽  
Southern Africa ◽  
Rainfall Variability ◽  
Warm Season ◽  
Tropical Rainfall Measuring Mission ◽  
Summer Rainfall ◽  
Spatial And Temporal Variability ◽  
Eastern Region ◽  
Southwest Indian Ocean ◽  
Mesoscale Convective

Abstract A combination of numerous factors, including geographic position, regional orography, and local sea surface temperatures, means that subtropical southern Africa experiences considerable spatial and temporal variability in rainfall and is prone to both frequent flooding and drought events. One system that may contribute to rainfall variability in the region is the mesoscale convective complex (MCC). In this study, Tropical Rainfall Measuring Mission (TRMM) Multisatellite Precipitation Analysis (TMPA) data is used to document the precipitation produced by MCCs over southern Africa for the 1998–2006 period. Most of the rainfall associated with MCCs is found to occur over central Mozambique, extending southward to eastern South Africa. High precipitation totals associated with these systems also occur over the neighboring southwest Indian Ocean, particularly off the northeast coast of South Africa. MCCs are found to contribute up to 20% of the total summer rainfall (November–March) in parts of the eastern region of southern Africa. If the month of March is excluded from the analysis, then the contribution increases up to 24%. In general, the MCC summer rainfall contribution for most of the eastern region is approximately between 8% and 16%. Over the western interior and Botswana and Namibia, the MCC contribution is much less (<6%). It is also evident that there is considerable interannual variability associated with the contribution that these systems make to the total warm season rainfall.

Changing Patterns in the Late Pleistocene/Early Holocene Prehistory of Southern Africa as Seen from the Nelson Bay Cave Stone Artifact Sequence

1978 ◽  
Vol 10 (1) ◽  
pp. 84-111 ◽  
Author(s):  
Janette Deacon
Keyword(s):  
Southern Africa ◽  
Sensu Stricto ◽  
Middle Stone Age ◽  
Stone Age ◽  
Faunal Remains ◽  
Later Stone Age ◽  
Large Numbers ◽  
Changing Patterns ◽  
Selection Of ◽  
Stone Artifact

The dating of the Stone Age sequence in southern Africa has been considerably revised over the last decade, and one of the anomalies which has resulted is that the Middle Stone Age, now dated to beyond 30,000 B.P., does not immediately precede the Later Stone Agesensu stricto. The excavation and analysis of occupation horizons dating between the most recent Middle Stone Age assemblages and the Holocene is therefore of particular interest. Nelson Bay Cave, situated on the southern coast of South Africa, contains deposits which partly fill the “gap” between the Middle and Later Stone Ages, and the occupation horizons dating between about 18,000 and 5000 years ago are described in this paper. Changes in the habitat in the vicinity of the site caused by sea-level and vegetation changes coincident with the amelioration of temperatures at the end of the Pleistocene are clearly marked in the faunal remains at the site. Largely correlated with the faunal changes (which includes the introduction of marine resources to the cave at about 12,000 B.P.) are changes in the stone artifact assemblages. Three industries are recognized in the sequence: the Robberg, characterized by microbladelets produced from bladelet cores and a few small scrapers and backed tools; the Albany, characterized by large scrapers and an absence of backed tools; and the Wilton, characterized by a variety of Formal Tools including relatively large numbers of small scrapers and backed tools. These changes in artifact-manufacturing traditions are interpreted as signaling adjustments to changing environmental conditions. An explanation for these adjustments is not sought in a simple cause-and-effect relationship between the environment and the cultural response; artifact changes are seen instead as the result of a twofold process, with the environment acting as an external stimulus to change, and the direction of the artifact change governed by the selection of a range of possibilities offered by the technology of the Later Stone Agesensu latothat was widespread in subequatorial Africa during the last 20,000 years.

scholarly journals Spatial and spatiotemporal dynamics of visceral leishmaniasis in an endemic North-eastern region of Brazil

2021 ◽  
Vol 15 (2) ◽  
Author(s):  
Ândria Silveira Almeida ◽  
Caíque Jordan Nunes Ribeiro ◽  
Camila Caroline Carlini ◽  
Rogério Silva Santos ◽  
Allan Dantas Dos Santos ◽  
...  
Keyword(s):  
Visceral Leishmaniasis ◽  
Temporal Trends ◽  
Spatiotemporal Dynamics ◽  
Eastern Region ◽  
Endemic Region ◽  
Health Care Networks ◽  
The North ◽  
North Eastern ◽  
Local Moran ◽  
New Research

Visceral Leishmaniasis (VL) is a neglected disease with increasing incidence in Brazil, particularly in the North-eastern. The aim of this study was to analyze the spatial and spatiotemporal dynamics of VL in an endemic region of North-eastern Brazil, between 2009 and 2017. Using spatial analysis techniques, an ecological and time series study was made regarding VL cases in Sergipe filed as notifiable disease events. With data from the Brazilian Institute of Geography and Statistics (Instituto Brasileiro de Geografia e Estatística, IBGE), a digital population and cartographic baseline was established. Segmented linear regression was used to examine the temporal trends. The statistical analysis methods of Global and Local Moran’ I, local Bayesian empirical methodology and spatial-temporal scanning were used to produce thematic maps. High instances were found among adults, males, urban residents, non-Whites and persons with low levels of education. A decrease in the recovery rate and an increase in the proportion of urban cases and lethality was found. A heterogeneous VL distribution with spatiotemporal agglomeration on the seaside of the state was seen in Sergipe. To better manage the disease, new research is encouraged together with development of public health strategies. Further, improving health care networks, especially primary care, is suggested as this approach has a key role in health promotion, prevention and monitoring of the most prevalent diseases.

scholarly journals An Agro-Based Society after Post-Industrial Society: From a Perspective of Economic Growth Paradigm

2021 ◽  
Vol 10 (12) ◽  
pp. 455
Author(s):  
Hongyun Han ◽  
Sheng Xia
Keyword(s):  
Economic Growth ◽  
Environmental Change ◽  
Industrial Revolution ◽  
Global Environmental Change ◽  
Profit Maximization ◽  
Industrial Society ◽  
The Holocene ◽  
Degraded Ecosystems ◽  
Almost All ◽  
Post Industrial

Since the Industrial Revolution, a new era has arisen called the Anthropocene, in which human actions have become the main driver of global environmental change outside the stable environmental state of the Holocene. During the Holocene, environmental change occurred naturally, and the Earth’s regulatory capacity maintained the conditions that enabled human development. Resource overexploitation of the industrial “Anthropocene”, under the principle of profit maximization, has led to planetary ecological crises, such as overloaded carbon sinks and climate changes, vanishing species, degraded ecosystems, and insufficient natural resources. Agro-based society, in which almost all demands of humans can be supported by agriculture, is characterized by life production. The substitution of Agro-based society for a post-industrial society is an evolutionary result of social movement, it is an internal requirement of a sustainable society for breaking through the resource constraint of economic growth. The core feature of agriculture is to use organisms as production objects and rely on life processes to achieve production goals. The substitution of Agro-based society for a post-industrial society is the precondition for a sustainable carbon cycle, breaking through the resource limits of the industrial “Anthropocene”, alleviating the environmental pressure of economic development, and promoting society from increasing disorderly entropy to orderly decreasing entropy. Meanwhile, technological advancements and growing environmental awareness of society make it feasible for the substitution of an agro-based society for a post-industrial society.

Sign in / Sign up

Export Citation Format

Share Document