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Fishery Bulletin 97(2), 1999 



assumption of a closed-system. However, depending on 

 the time scale of the data available and the decrease in 

 reproductive success for strays, undetected metapopu- 

 lation structure could still cause problems. The second 



problem arises because metapopulation structure can 

 disconnect the abundance-habitat quality relationship. 

 This could lead managers to make erroneous inferences 

 regarding the habitat requirements for a species. The 



