Shallow-water wave lensing in coral reefs: A physical and biological case study

Veal, Cameron James, Carmi, Maya, Dishon, Gal, Sharon, Yoni, Michael, Kelvin, Tchernov, Dan, Hoegh-Guldberg, Ove and Fine, Maoz (2010) Shallow-water wave lensing in coral reefs: A physical and biological case study. Journal of Experimental Biology, 213 24: 4304-4312. doi:10.1242/jeb.044941

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Author Veal, Cameron James
Carmi, Maya
Dishon, Gal
Sharon, Yoni
Michael, Kelvin
Tchernov, Dan
Hoegh-Guldberg, Ove
Fine, Maoz
Title Shallow-water wave lensing in coral reefs: A physical and biological case study
Journal name Journal of Experimental Biology   Check publisher's open access policy
ISSN 0022-0949
1477-9145
Publication date 2010-12
Sub-type Article (original research)
DOI 10.1242/jeb.044941
Open Access Status File (Publisher version)
Volume 213
Issue 24
Start page 4304
End page 4312
Total pages 9
Place of publication Cambridge, United Kingdom
Publisher The Company of Biologists
Collection year 2011
Language eng
Abstract Wave lensing produces the highest level of transient solar irradiances found in nature, ranging in intensity over several orders of magnitude in just a few tens of milliseconds. Shallow coral reefs can be exposed to wave lensing during light-wind, clear-sky conditions, which have been implicated as a secondary cause of mass coral bleaching through light stress. Management strategies to protect small areas of high-value reef from wave-lensed light stress were tested using seawater irrigation sprinklers to negate wave lensing by breaking up the water surface. A series of field and tank experiments investigated the physical and photophysiological response of the shallow-water species Stylophora pistillata and Favites abdita to wave lensing and sprinkler conditions. Results show that the sprinkler treatment only slightly reduces the total downwelling photosynthetically active and ultraviolet irradiance (̃5.0%), whereas it dramatically reduces, by 460%, the irradiance variability caused by wave lensing. Despite this large reduction in variability and modest reduction in downwelling irradiance, there was no detectable difference in photophysiological response of the corals between control and sprinkler treatments under two thermal regimes of ambient (27°C) and heated treatment (31°C). This study suggests that shallow-water coral species are not negatively affected by the strong flashes that occur under wave-lensing conditions. © 2010.
Keyword Coral
Wave lensing
Light
Frequency light fluctuations
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Global Change Institute Publications
Official 2011 Collection
 
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Citation counts: TR Web of Science Citation Count  Cited 10 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 11 times in Scopus Article | Citations
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Created: Sun, 12 Dec 2010, 00:05:54 EST