Abstract

), while no effect was found for M. longa.ForC. finmarchicus, a rela-tively constant fecal pellet production (FPP) and fecal pellet volume suggestedingestion of sediment, which probably led to reduction in egg production rates(EPRs) at high sediment concentrations. For Pseudocalanus sp., FPP decreased withincreasing sediment concentrations, while no effect was observed on EPR. No sig-nificant difference was observed in FPP for M. longa feeding on the diatom T. weiss-flogii compared to the ciliate Strombidium sulcatum. The study shows that highsediment concentrations influence the capability of carbon turnover in C. finmarchi-cus and Pseudocalanus sp., while M. longa appears to be more tolerant to high sedi-ment loads. Therefore, high concentrations of SPM could potentially influence thespecies composition of glacially influenced fjords.KEYWORDS: grazing; copepoda; suspended sediment; Greenland

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