Wormcam apparatus.

<p>Image of the Wormcam apparatus (A) and a cross-sectional diagram of the entire Wormcam system (B). Cross-sectional diagram not drawn to scale.</p

Dynamic nature of the sediment during near anoxic conditions.

<p>Sediment profile image showing a worm (W) and worm burrows (Br), during severe hypoxic conditions, and bacteria (Bc) migrating to the sediment surface and producing copious amounts of organic matter. Scale around image is in cm units, and the blue circle on the graph shows the DO concentration for the image. Light artifacts from reflection in the prism are visible on the edge of the image.</p

Interaction between DO concentration and apparent-color RPD depth on burrow depth.

<p>Relationship of centroid burrow depth with DO concentration and aRPD depth. A significant relationship was found in the interaction between DO and RPD depth on burrow depth (p<0.001, F = 432.35).</p

Hypoxia's impact on infauna behavior.

<p>The holothurian, <i>Leptosynapta tenuis</i> (L), observed extending out of the sediment during near anoxic conditions. Scale around image is in cm units, and the blue circle on the graph shows the DO concentration for the image. Light artifacts from reflection in the prism are visible on the edge of the image.</p

DO concentration's relationship with bioturbation parameters.

<p>Relationship of DO concentrations and centroid (A), maximum burrow depths (B), burrow length (C), and aRPD depth (D). Significant positive relationships were found for centroid (p<0.0005, F = 254.48) and maximum (p<0.0005, F = 191.37) burrow depths as well as for burrow length (p<0.0005, F = 95.32) and RPD depth (p<0.0005, F = 399.98).</p

Sediment profile during near anoxic conditions.

<p>Sediment profile image showing <i>Paraprionospio pinnata</i> (P) at the surface during the onset of a near anoxic event. Scale around image is in cm units, and the blue circle on the graph shows the DO concentration for the image. Light artifacts from reflection in the prism are visible on the edge of the image.</p