The similarity in the behaviour of the microcosms and Narragansett Bay 

 gives some confidence that these systems will be good experimental tools for 

 ecological and biogeochemical experiements. 



ACKNOWLEDGMENTS 



This work was supported by grant No. R803902020 from the 

 Environmental Protection Agency. We thank Ann and Ted Durbin for allowing 

 us to use their phytoplankton counts and zooplahkton biomass data in Figures 

 24-4 and 24-9, and Scott Nixon for helpful discussion. 



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