[Coral-List] Nutrient thresholds for coral reefs

DeeVon Quirolo deevon at bellsouth.net
Thu Feb 16 09:56:52 EST 2006

Dr. Brian Lapointe of Harbor Branch Oceanographic Institution and Dr. 
Peter Bell of  University of Queensland/Australia both arrived at the 
same thresholds from different perspectives, but they are:  1 mg/L 
dissolved inorganic nitrogen, .01 mg/L soluble reactive 
phosphorus.  You can contact either Lapointe or Bell for further 
info.  These thresholds are far lower than any current water quality 

Best, DeeVon Quirolo, Reef Relief www.reefrelief.org

At 08:43 PM 2/15/2006, Fiona Webster wrote:
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>I am a PhD student study coral reef ecology at the Ningaloo Reef in 
>Western Australia.  I am interested in bottom up verses top down 
>effects on the growth of algae and how this may affect coral 
>health.  I am going to be looking at the role of nutrients on algal 
>growth and would like to set my nutrient concentrations at a similar 
>level to other coral reefs which are considered to be nutrient 
>enriched.   Can anyone advise what levels of inorganic nitrogen and 
>phosphorous in the water column are considered enriched?  I am after 
>references and/or unpublished data.
>Thank you
>Fiona Webster
>Phd student
>Marine Ecology
>School Biological Sciences
>Department of Science and Engineering
>Murdoch University
>Coral-List mailing list
>Coral-List at coral.aoml.noaa.gov

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