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Title: Evaluation of spore wall chemistry as a novel biochemical proxy for UV-B radiation
Author: Fraser, Wesley T.
Awarding Body: Open University
Current Institution: Open University
Date of Award: 2009
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The stratospheric ozone layer provides protection for Earth's land-based organisms against harmful ultraviolet (UV) radiation, but the past century has seen the ozone layer compromised as a result of human activity, resulting in commensurate shifts in surface UV-B flux. Despite the importance of UV radiation to the well-being of life, records of surface UV-B flux only exist for a short period of time. In order to gain a deeper understanding of the behaviour of ozone and UV-B flux in the past an alternative method of determining UV-B is required. Changes in spore chemistry have been proposed as a palaeo-monitor of UV-B flux, which can then be related to stratospheric ozone abundance. By employing the rapid and inexpensive technique of FTIR microspectroscopy to investigate changes in spore chemistry, a large dataset spanning seven different spatial and temporal UV regimes has been generated in order to evaluate the feasibility of routine usage of a spore-based UV-B proxy.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available