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JOURNAL OF PLANKTON RESEARCH | VOLUME 5 | NUMBER 6 | PAGES 935-938 | 1983
© Oxford University Press

other

The effects of Cu on the adenylate energy charge of open ocean phytoplankton1

Steve E. Fitzwater, George A. Knauer and John H. Martin

Moss Landing Marine Laboratories Moss Landing, CA 95039, USA

Received on March 1, 1983; accepted on August 1, 1983

The effects of short-term, acute Cu exposure (6 h) on the adenylate energy charge (ECA) of open-ocean phytoplankton populations (northeastern equatorial Pacific) were investigated. Energy charge remained at {small tilde}0.77 over the range of Cu additions (0.025 – 5.µg l–1), even though 14C uptake and total adenylate levels (ATP + ADP + AMP) were reduced by as much as 60%. These findings suggest that ECA alone is not a sensitive indicator of acute sublethal metal effects on phytoplankton.

1This research was supported by the NSF Biological Oceanography Program grant #OCE 81-17286.


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