Dendrogram of hierarchical cluster analysis of species data, clusters identified using the SIMPROF routine (p < 0.01).

<p>Dendrogram (A) shows the SIMPROF cluster results prior to splitting and consolidation of clusters and (B) shows re-labelled clusters after splitting and consolidation. Those clusters that were combined or split from Fig. 3a are labelled in red. SIMPROF clusters are collapsed for ease of interpretation and are represented by green dashed lines. Grey lines represent SIMPROF identifying with no significant internal structure.</p

Meso-scale geomorphological features identified from the summit and flank of Anton Dohrn Seamount.

<p>Meso-scale geomorphological features identified from the summit and flank of Anton Dohrn Seamount.</p

Example images of biotopes identified from multivarite cluster analysis.

<p>Refer to <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0124815#pone.0124815.s002" target="_blank">S1 Table</a> for biotope details. g (Oph. Cer), i (Lop.Mad), j (Syr.Car), k (Syr.Oph), o (Por.Pso), p (Ser.Pso), t (Sol.Oph), u (Lop.Oph), w (Sol.Car), x (Sol.Por), y (Lep.Par), z (Ker.Sol), aa (Gor.Zoa). copyright JNCC, 2009.</p

Camera transects sampled from the NW (top) and SE (bottom) survey areas of Anton Dohrn Seamount overlaid on multibeam bathymetry.

<p>Selected bathymetric contours are shown as dashed lines with labelled water depths in metres below sea level.</p

Distribution of non-VME biotopes (mapped using video footage) biotopes on the NW and SE side of Anton Dohrn Seamount.

<p>Refer to <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0124815#pone.0124815.g002" target="_blank">Fig 2</a> for bathymetric scale.</p

Results of all diversity indices (mean) used in the multivariate ANOSIM.

<p>Results of all diversity indices (mean) used in the multivariate ANOSIM.</p

The study area west of Scotland, UK.

<p>Survey areas on the NW and SE sides of Anton Dohrn Seamount are marked. Bathymetric contours are provided by GEBCO, the 200 m depth contour (dashed line) marks the approximate position of the continental shelf break.</p

Mean normalised diversity and 95% confidence intervals of biotopes defined from Anton Dohrn Seamount.

<p>Mean normalised diversity and 95% confidence intervals of biotopes defined from Anton Dohrn Seamount.</p

Distribution of xenophyophore communities (mapped using video footage) biotopes on the NW and SE side of Anton Dohrn Seamount.

<p>Refer to <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0124815#pone.0124815.g002" target="_blank">Fig 2</a> for bathymetric scale.</p

Visual discrimination of screen-detected persistent from transient subsolid nodules: An observer study - Fig 3

<p><b>(a)</b> Correctly identified transient lesion with a probability score of ≤ 40 by all four observers. <b>(b)</b> Correctly identified persistent lesion with a probability score of ≥ 80 by all four observers. <b>(c)</b> Incorrectly identified lesion by majority of observers: transient lesion, but scored as persistent (probability score ≥ 60). <b>(d)</b> Incorrectly identified lesion by majority of observers: persistent lesion, but scored as transient (probability score ≤ 40).</p