legal definition of a reef
Mark Spalding
Mark.Spalding at unep-wcmc.org
Mon Jan 14 07:04:30 EST 2002
The new World Atlas of Coral Reefs provides a simple definition which may be
of use:
A reef is "a physical structure which has been built up, and continues to
grow over decadal time-scales, as a result of the accumulation of calcium
carbonate laid down by hermatypic corals and other organisms."
This definition tries to get in:
- physical structure
- living components
- a reef may go through dramatic events such as Acanthaster plagues, but is
still a reef
- corals are critical, but often not the only components.
Of course under this definition there remain a lot of important coral
communities which are not coral reefs, and also some dead eroding structures
which WERE coral reefs.
Cheers
__________________________________________
Mark Spalding, PhD
Senior Marine Ecologist
UNEP-World Conservation Monitoring Centre www.unep-wcmc.org
219 Huntingdon Road Tel: +44 (0)1223 277314
Cambridge, CB3 0DL Fax: +44 (0)1223 277136
UK e-mail:mark.spalding at unep-wcmc.org
or
Research Associate
Cambridge Coastal Research Unit
Department of Geography
Downing St
Cambridge
UK
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