Solar UV exposures measured simultaneously to all arbitrarily oriented leaves on a plant

Parisi, A. V. and Schouten, P. and Downs, N. J. and Turner, J. (2009) Solar UV exposures measured simultaneously to all arbitrarily oriented leaves on a plant. In: MOCA 2009: Our Warming Planet , 19-29 Jul 2009, Montreal, Canada.

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Abstract

Cloud cover which is influenced by climate change, has a direct impact on the solar UV radiation incident on terrestrial ecosystems. In order to determine and evaluate the consequences associated with changes in solar UV radiation levels, research into the effects of solar UV radiation on different types of biota, such as plants is becoming increasingly significant. Therefore, a means of obtaining information on the solar UV radiation incident on plants is required. In this research, the spectral irradiances of the solar UV incident to the leaves on a plant were measured with a calibrated spectrometer. These spectra detail the correlation between solar UV irradiances with the inclination and orientation of each leaf, along with the effect of shading by other leaves. In order to measure the solar UVB exposures to plant leaves, polysulphone dosimeters were miniaturised to allow the measurement of UVB exposures to the leaves of smaller plants over the period of a day. For the cases of larger plants where exposure measurements were required over time intervals longer than the dynamic range of polysulphone, dosimeters based on polyphenylene oxide which has a dynamic range approximately five times longer than that of polysulphone were employed to measure the solar UVB exposures simultaneously on the leaves of a plant over a one week time period.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Speech)
Refereed: No
Item Status: Live Archive
Additional Information: No evidence of copyright restrictions preventing deposit.
Depositing User: Assoc Prof Alfio Parisi
Faculty / Department / School: Historic - Faculty of Sciences - Department of Biological and Physical Sciences
Date Deposited: 18 Jun 2010 01:46
Last Modified: 02 Jul 2013 23:22
Uncontrolled Keywords: polysulphone; UV; polyphenylene oxide; plants; solar; PPO
Fields of Research (FOR2008): 06 Biological Sciences > 0607 Plant Biology > 060705 Plant Physiology
02 Physical Sciences > 0299 Other Physical Sciences > 029999 Physical Sciences not elsewhere classified
04 Earth Sciences > 0401 Atmospheric Sciences > 040103 Atmospheric Radiation
Socio-Economic Objective (SEO2008): E Expanding Knowledge > 97 Expanding Knowledge > 970106 Expanding Knowledge in the Biological Sciences
URI: http://eprints.usq.edu.au/id/eprint/5554

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