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. 2018 May 16;8:7619. doi: 10.1038/s41598-018-25989-2

Figure 1.

Figure 1

Photographs showing luminophore tracer fate consecutive to Marenzelleria spp. bioturbation and feeding activities at the end of the experiment. (A) Occurrence of Marenzelleria burrows (indicated by white arrows) burying tracers down in the sediment along glass-wall of core 5b. White line indicates the sediment-water interface (SWI). Sediment oxidized layer (ox) had a light brown color whereas reduced layer (red) was black. (B) Close-up photo from above core 2a showing the sediment surface with luminophore tracers (in pink and yellow), a Marenzelleria burrow opening (b) and fecal-pellet strings (p).