Figure 3
From: Coral mucus fuels the sponge loop in warm- and cold-water coral reef ecosystems
Transfer of coral mucus C and N in a) the warm-water sponge loop and b) the cold-water sponge loop.
C:N ratios presented inside red boxes (i.e. Cmucus:Nmucus) indicate the C:N ratio of coral mucus-derived organic matter that is transferred at each step of the sponge loop. Solid lines indicate trophic transfer of coral mucus confirmed in the current study and dotted lines indicate trophic transfers inferred from literature. Note that Cmucus:Nmucus refers only to the ratio of mucus-derived C and N transferred at each step and not to the C:N ratio of the bulk sponge tissue and detritus. Photograph in (a) © Malik Naumann and (b) © Solvin Zankl.
