Seasonal variations in the subsurface ultraviolet-B on an inshore Pacific coral reef ecosystem

Downs, Nathan J. and Schouten, Peter W. and Parisi, Alfio V. (2013) Seasonal variations in the subsurface ultraviolet-B on an inshore Pacific coral reef ecosystem. Photochemistry and Photobiology, 89 (5). pp. 1234-1243. ISSN 0031-8655


Fringing coral reefs provide a unique opportunity to study shallow aquatic ecosystems. A fringing coral reef system located in close proximity to a developed region was considered in this study. In such an environment the rate of decay of dissolved organic matter is high and the penetration of higher energy ultraviolet-B extends a greater influence on species diversity, particularly upon shallow benthic communities. Results from a nine month subsurface ultraviolet-B exposure measurement campaign performed at a site located on the southern Queensland coast (Hervey Bay, 25oS) are presented in this research. For this, a novel dosimetric technique was utilised to measure long-term subsurface ultraviolet-B exposures. The resultant data set includes exposure measurements made during the significant La Niña event of late 2010 which resulted in unprecedented high sea surface temperatures and severe flooding across eastern Australia, impacting upon the lagoon regions of the Great Barrier Reef and Queensland's southern estuaries, including the study site. The influence of season, diurnal tidal variation, cloud cover and solar zenith angle were analysed over the campaign period. Mean minimum daylight water depth was found to be the most significant factor influencing subsurface ultraviolet-B.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2013 The American Society of Photobiology. Published online 16 Jul 2013. Published version deposited in accordance with the copyright policy of the publisher.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Agricultural, Computational and Environmental Sciences
Date Deposited: 02 Jul 2013 03:56
Last Modified: 20 Oct 2014 05:41
Uncontrolled Keywords: Pacific Ocean; coral islands; ultraviolet radiation; ecosystem
Fields of Research : 06 Biological Sciences > 0602 Ecology > 060205 Marine and Estuarine Ecology (incl. Marine Ichthyology)
05 Environmental Sciences > 0501 Ecological Applications > 050102 Ecosystem Function
04 Earth Sciences > 0401 Atmospheric Sciences > 040103 Atmospheric Radiation
Socio-Economic Objective: D Environment > 96 Environment > 9605 Ecosystem Assessment and Management > 960507 Ecosystem Assessment and Management of Marine Environments
Identification Number or DOI: 10.1111/php.12101

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