Planktonic grazers are a potentially important source of marine dissolved organic carbon

摘要

A series of laboratory experiments was performed to measure dissolved organic carbon (DOC) production during herbivorous grazing by heterotrophic protists (ciliate Strombidinopsis acuminatum, dinolflagellate Oxyrrhis marina) and copepods (Calanus pacificus). COC production by phytoplankton was also measured. Experiments were per- formed in artificial seawater to provide a low DOC background against which changes in DOC concentration could be measured directly.