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	and mechanisms of the initiation and termination of 
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	INTERNATIONAL-CORAL-REEF-SYMPOSIUM,-TOWNSVILLE,-
	AUSTRALIA,-8th-12th-AUGUST-1988.-VOLUME-1:-PLENARY-
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The importance of human impacts on reefs is repeatedly 
stressed. From the global scale of the Greenhouse Effect 
itself--which has been characterized as an "unprecedented 
(and uncontrolled) geophysical experiment"--to local 
development or fishing practices, few natural reef impacts 
have not been amplified, changed, or mimicked by man. The 
central question is "How may we best study reefs in a 
changing climate in order to understand (1) the natural 
forces and human impacts that have shaped reef development 
through the present and (2) the effects of natural and man-
made environmental modifications that will change and define 
reefs in the future?" Answers to this question may be found 
only by studying coral reef systems over a wider and more 
thoughtfully defined range of time and space than has been 
common in the past.