Fig 2. Grazing by Oikopleura dioica influences particle fate.

Different fates of particles grazed by the appendicularian Oikopleura dioica: particles associated with the discarded house (white arrow) via retention on either the inlet filters (IF), food-concentrating filter (FCF), or house walls; particles captured on the pharyngeal filter (PF), ingested, and incorporated into fecal pellets (FP) (blue arrow). Arrow widths represent the average flux of houses (703 mg C m^-2 d^-1) and fecal pellets (446 mg C m^-2 d^-1) [44]. Arrow lengths represent the average sinking rates of houses (50 m day^-1) ([38] and references therein) and fecal pellets (60 m day^-1) [44]. Values show the range of flux for houses ([38] and references therein) and fecal pellets [42, 44], and the sinking rates of houses [42] and fecal pellets [44, 45]. Schematic of O. dioica by Jenna Valley.