Rangeland Ecology & Management
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Displaying 101 - 145 of 145 results
- Library Collection RecordRegional water budget tendencies reported by 14C-dated field data are correlated with Late Quaternary cooling and warming phases. Areal frequency distribution analysis of these correlations shows…Publication Date 1989
- palaeobotany
- palaeoclimate
- Africa
- Library Collection RecordMethods used in the analysis of 1163 pieces of charcoal from Elands Bay, South Africa, are described. Results from three archaeological sites (Tortoise Cave, Spring Cave and Mike Taylors Midden) show…Publication Date 1992
- South Africa
- Elands Bay
- Holocene
- environment
- charcoal
- palaeobotany
- Africa
- Library Collection RecordThe Mfolozi and Hluhluwe Valleys of southeastern Africa are representative of a sub-tropical biome and have archaeological evidence for farming settlement spanning more than 1500 years. By collecting…Publication Date 1984
- southern Africa
- sub-tropics
- farming communities
- soils
- plant communities
- site distributions
- iron production
- Environmental change
- conservation
- palaeobotany
- agriculture
- Africa
- Library Collection RecordArtifact occurrences from the alluvial fills of the Lower Vaal Basin, South Africa, are summarized with reference to a revised stratigraphic framework for these deposits. The Older Gravels, Younger…Publication Date 1978
- palaeobotany
- Africa
- Library Collection RecordThe Karoo Sequence spans an age ranging from Carboniferous to Jurassic and occurs in intra-cratonic and graben-rift basins throughout southern Africa. All of the subcontinent 039;s bituminous,…Publication Date 1990
- plant anatomy
- palaeoecology
- grasslands
- palaeobotany
- Africa
- Library Collection RecordPetrographical and palynological coal-quality investigations relating to variations in one of the best-known and well-researched coalfields in Africa, the Witbank coalfield, and one of the most…Publication Date 1989
- palaeobotany
- Africa
- Library Collection RecordNo abstract availablePublication Date 1991
- palaeobotany
- grassland
- soils
- Africa
- Library Collection RecordThe fossil locality of Fort Ternan, Kenya, preserves the remains of the middle Miocene hominoidKenyapithecus wickeri, and a reconstruction of the paleoenvironment of this site offers important…Publication Date 1991
- middle Miocene
- Bovids
- functional morphology
- Kenyapithecus
- paleoecology
- hominoid evolution
- palaeobotany
- Africa
- Library Collection RecordStructural and stratigraphic aspects of the Lebowa Granite Suite (the granites) and Rustenburg Layered Suite (the basic rocks) are examined and compared in various compartments of the Bushveld…Publication Date 1990
- palaeobotany
- Africa
- Library Collection RecordAn extensive search was made for distinctive shock-metamorphic effects in order to test the theory that the Bushveld Complex (BC) was formed by the impact of large extraterrestrial objects. Field and…Publication Date 1990
- palaeobotany
- Africa
- Library Collection RecordPaleomagnetic pole positions, ocean-floor magnetic anomalies and least-squares fits of continental edges show that most Phanerozoic orogenic belts have formed at or near the borders of continents and…Publication Date 1976
- palaeobotany
- Africa
- Library Collection RecordA pollen sequence in a relatively young hyrax dung midden in the Orange Free State, South Africa, shows marked changes in composition which can be related to environmental fluctuations. The midden…Publication Date 1992
- palaeobotany
- Africa
- Library Collection RecordPollen analysis of vlei or swamp sediments from the Nuweveldberg Mountains in the Central Karoo yields a vegetation history spanning the last 760 years. It sheds light on the local vegetation shifts…Publication Date 1989
- palaeobotany
- palaeoclimate
- Africa
- Library Collection RecordResults of fossil pollen studies in Eastern, Central and Southern Africa covering the last 32,000 years are surveyed in this paper. This research, conducted between 1951 and 1985, was mostly…Publication Date 1988
- palaeobotany
- Africa
- Library Collection RecordPollen spectra in a peat deposit from a mountainous area near Tate Vondo in Venda have been grouped into three zones. The oldest zone of c. 12,000-10,000 yr B.P. contains mainly grassland and fynbos…Publication Date 1987
- palaeobotany
- Africa
- Library Collection RecordPollen analyses of rare spring deposits in the Transvaal, South Africa, ranging back to roughly 35 000 B.P., were carried out. A photographic record of 140 types of palynomorphs was made. Indicators…Publication Date 1982
- palaeobotany
- Africa
- Library Collection RecordThis article deals with the most important aspects of nearly twenty years of intensive study of the pollen-and-spore content of Tertiary sediments in some parts of tropical South America, Africa and…Publication Date 1968
- palaeobotany
- southern Africa
- Library Collection RecordEquus Cave, in Quaternary tufa near Taung in the semiarid woodland of the southern Kalahari, yielded 2.5 m of sediment in which a rich assemblage of bones and coprolites was preserved. The fossils…Publication Date 1987
- palaeobotany
- Africa
- Library Collection RecordPollen spectra from cores of organic spring deposits from the Transvaal provide evidence for the climatic evolution of the province during the last 35,000 yr B.P. or more. The past climatic phases…Publication Date 1982
- palaeobotany
- Africa
- Library Collection RecordThe development of reliable paleoclimatic maps at a global scale requires data at the following three levels of analysis: (1) well-recorded observations of evenly positioned, well-dated geological…Publication Date 1979
- palaeobotany
- palaeoclimate
- Africa
- Library Collection RecordThe 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…Publication Date 1978
- palaeobotany
- Africa
- Library Collection RecordSediment composition, grain size and clay mineral record of a high-resolution sediment core from the continental slope off Namibia was investigated to gain information on the deposition of…Publication Date 1996
- palaeobotany
- Africa
- Library Collection RecordTrophic structure and composition are examined in two important biotic records, one the Paleogene of Wyoming and Montana, and the other from the Neogene of Pakistan. The Paleogene sequence spans…Publication Date 1995
- palaeobotany
- Africa
- Library Collection RecordThe Pretoria Saltpan is a circular crater 1130 m in diameter and is situated some 40 km N of Pretoria (lat. 25°34'30''/long. 28°04'59''E). A recent tube sampling and…Publication Date 1993
- palaeobotany
- Africa
- Library Collection RecordPolleniferous sediments from southern Africa associated with past warm episodes before the Last Glacial Maximum, are rare. Interpretation of environmental conditions during these phases are…Publication Date 1993
- palaeobotany
- palaeoclimate
- Africa
- Library Collection RecordPollen evidence from two cores recovered from the Mpulungu basin, South lake Tanganyika, reveals a significant pattern of changes in vegetation in relation to climatic fluctuations between 25,000 and…Publication Date 1991
- palaeobotany
- palaeoclimate
- Africa
- Library Collection RecordHyrax middens in relatively dry parts of Africa preserve plant material which includes pollen. The bottoms of two stratified hyrax dung middens from Blydefontein Basin in the Karoo shrubland of South…Publication Date 1990
- palaeobotany
- Africa
- Library Collection RecordA review of Late Quaternary palaeoclimatic data derived from several pollen sequences, between ca. 22 and 34°S in Southern Africa, shows a degree of similarity in temperature and moisture variations…Publication Date 1989
- palaeobotany
- palaeoclimate
- Africa
- Library Collection RecordThe Plio-Pleistocene sediments of Olduvai Gorge, Tanzania, are well known for their records of both hominid evolution and the paleoenvironments where these early hominids lived. This paper…Publication Date 1984
- palaeobotany
- Africa
- Library Collection RecordIt was thought for a long time that equatorial regions had remained virtually unchanged at least since the Tertiary period -- it is only from the Late Tertiary that we can talk of the present…Publication Date 1982
- palaeobotany
- Africa
- Library Collection RecordExtensive systems of fixed linear dunes occur in the Kalahari region of southern Africa, from 28°S to 16°30'S. They provide evidence for large-scale expansion of arid climates in the…Publication Date 1981
- palaeobotany
- Africa
- Library Collection RecordAn examination of sediment from piston cores and 3.5-kHz seismic reflection profiles from the northern Cape Basin and southern Angola Basin reveal a contrasting history of depositional processes in…Publication Date 1980
- palaeobotany
- Africa
- Library Collection RecordRecognition of (late) Tertiary shorelines on continental coasts is becoming increasingly common. It is argued that the elevations of such features are central to their approximate dating and the…Publication Date 1984
- palaeobotany
- Africa
- Library Collection RecordDinoflagellate cyst and pollen records from marine sediments off the southwestern African coast reveal three major aridification periods since the last glaciation and an environmental correlation…Publication Date 2000
- aridification
- upwelling
- pollen
- dinoflagellate cyst
- interhemispheric asynchrony
- Southwestern Africa
- palaeobotany
- Africa
- Library Collection RecordDetailed reconstructions of vegetation structure are critical to understanding morphological and behavioral adaptations of Plio-Pleistocene African hominids. Savanna grassland habitats are often…Publication Date 1997
- bovid
- vegetation
- grasslands
- bipedality
- savanna
- palaeobotany
- Africa
- Library Collection RecordThis paper discusses land use patterns of hunter-gatherers inhabiting arid grasslands of later Pleistocene East Africa, inferred from an analysis of raw material economy in five Later Stone Age (LSA…Publication Date 1999
- palaeobotany
- land use
- grasslands
- Africa
- Library Collection RecordWoody, subalpine shrubs and grasses currently surround Lake Rutundu, Mount Kenya. Multiple proxies, including carbon isotopes, pollen and grass cuticles, from a 755-cm-long core were used to…Publication Date 2003
- Late Quaternary
- East Africa
- palaeoecology
- fire history
- C3
- C4
- palaeobotany
- Africa
- Library Collection RecordStable carbon and oxygen isotope analyses of ungulate grazers from four archaeological sites located in different environs within the Caledon River Valley have provided a relatively well-dated proxy…Publication Date 2002
- terminal Pleistocene
- Holocene
- carbon and oxygen isotopes
- southern Africa
- palaeoenvironments
- palaeobotany
- palaeoclimate
- Africa
- Library Collection RecordThe microscopic charcoal content of several Quaternary pollen sequences is used to investigate fire history in South Africa both during the Holocene and the Late Pleistocene. Although fluctuations in…Publication Date 2002
- microscopic charcoal
- pollen sequences
- fire history
- Iron Age
- Quaternary
- South Africa
- palaeobotany
- Africa
- Library Collection RecordIn quantitative phytolith analysis, chance error associated with insufficient counts can affect the robustness of the interpretation, whether it is vegetation reconstruction or taxonomic…Publication Date 2009
- palaeobotany
- Library Collection RecordSedimentary charcoal records document changes in fire regime. We have identified 67 sites (30 sites with better than millennial resolution) which have records for some part of the Last Glacial to…Publication Date 2010
- fire ecology
- palaeobotany
- climate change
- Library Collection RecordNinety-four sites worldwide have sufficient resolution and dating to document the impact of millennial-scale climate variability on vegetation and fire regimes during the last glacial period.…Publication Date 2010
- palaeobotany
- climate change
- vegetation dynamics
- Library Collection Record1. Abrupt changes and regime shifts are common phenomena in terrestrial ecological records spanning centuries to millennia, thus offering a rich opportunity to study the patterns and drivers of…Publication Date 2011
- palaeobotany
- palaeoecology
- abrupt change
- alternate stable states
- aridity
- climate change
- critical thresholds
- palaeoecology and land-use history
- Quaternary
- regime shifts
- Library Collection Record1. Interactions among plants and their consumers, pollinators and dispersers are central to evolutionary theory, but interactions among plants themselves have received much less attention. Thus…Publication Date 2011
- palaeobotany
- co-evolution
- competition
- evolution
- extended phenotype
- facilitation
- niche
- plant-plant interactions
- selection
- Library Collection RecordAbstract Long-term palaeoecological records are needed to test ecological hypotheses involving time, as short-term observations are of insufficient duration to capture natural variability. In this…Publication Date 2013
- Long-term ecology
- Non-analogue communities
- community stability
- Climate–vegetation disequilibrium
- Origin of biodiversity
- biodiversity conservation
- palaeobotany
- ecosystem ecology
- vegetation dynamics
- climate change
- human impact
- conservation
- fire
- pollen
- Venezuelan Gran Sabana region
- northern South America