bioerosion by sea urchins

Frank KELMO F.Kelmo at
Fri Oct 26 15:50:22 EDT 2001

Dear Colleagues,
Amongst the disastrous effects of the 1997-98 ENSO I have found the 
following affirmation:
"Sea urchins eroded disturbed coral colonies at rates that exceed 
carbonate production, potentially resulting in the elimination of 
existing reef buildups" 
My question is how sea-urchins erosion can be best assessed? 
Mokady et al. 1996 (Biol Bull, 190(3):367-372), suggest 
quantification of CaCO3 fecal pellets contents + total gut contents. 
Any other suggestions? I would appreciate everything you can track 
Thanks, Frank.

Coral Reef Ecology
Benthic Ecology Research Group
613 Davy Building, University of Plymouth,
Drake Circus, Devon, PL4 8AA
United Kingdom.
Phone: +44 (0)1752 232951 (Lab) +44 (0)870 712 5852 (home)
Fax: +44 (0)1752 232970
E-mail: fkelmo at
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