Date of Award
Master of Science (MS)
Dr. Lawrence Kiage
Dr. Daniel Deocampo
A 3.5 m radiocarbon-dated sediment core was recovered from the Kapkanyar mire, Cherangani Hills, Kenya, to reconstruct the paleoclimatic and paleoenvironmental variations in Tropical East Africa since the last glacial maxima. Through a multi-proxy approach of pollen, elemental geochemistry, and LOI analysis, different deductions were made based on the relationship of the patterns exhibited by each proxy. Associations of varying pollen type groupings: the arboreal, herbaceous and shrubs were used to infer the prevailing paleoclimates considering the vegetation-climate relationship that has been observed and exploited in pioneering palynological studies. Findings from this study reveal notable climate dynamics of sub-orbital scale global climate signals including the East African monsoon signals, the African Humid period (16Ka-6Ka) and Pleistocene aridity events such as the Younger Dryas (14Ka-12Ka). Although anthropogenic activities are observed to be a principal driver in environmental change, it is evident that they do not entirely oust natural background climatic changes.
Opiyo, Benjamin Atieno, "Paleoenvironmental and Paleoclimatic Changes in Tropical East Africa Since the LGM: New Record from the Cherangani Hills Kenya.." Thesis, Georgia State University, 2018.