Funded PhD studentship at:
Department of Geography & Environment
University of Southampton
Title: When was the South Pacific colonised? A lake sediment approach to understanding climate:human drivers of ecosystem change on remote Pacific Islands
Supervisors: Sandra Nogue, Pete Langdon, David Sear (all University of Southampton), and William Gosling (University of Amsterdam)
Deadline: 2 January 2017
To find out more about the project, check eligibility criteria, and details of how to apply click here.
The Pacific islands of Polynesia were among the last places on earth to be colonised by humans. The precise dates of colonisation are debated – a situation which arises from the different sources of evidence. New lake sediment records from the Cook Islands (Atiu, Mangaia) and Samoa (Upolu) show very clear evidence of disturbance, but what is unclear is to what extent the signal represents the arrival of humans or a change in climate. A key question for the analysis of sedimentary records is the ability to distinguish natural variability in the environment of Pacific Islands from that arising from the arrival of humans in a temporal and spatial context. We aim to use lipid biomarkers, fossil charcoal, and pollen preserved in lake sediments to identify: 1) the presence of humans and/or livestock that were brought with them, and 2) the related environmental change. Multiproxy approaches supported by statistical analysis, will be deployed to three sites where we already have good chronological controls and high resolution records of palaeoclimate. We are well placed to apply new methods and higher resolution analyses to address fundamental questions about the response of remote pacific islands to climate and human forcing.