Karpov 109
Figure 35c. Differential GPS positions indicating presence of the fishes in Figure 35c on ROV dive
transects in the southern portion of PGER. Inside bars represent modified primary substrate types as
determined from ROV videotape. Outside bars represent relief categories.
Karpov 110
Figure 36a. Differential GPS positions indicating presence of the macroinvertebrates, Tethya aurantia,
and an unidentified gorgonian at PGER. Positions are superimposed on ROV dive transects along with
bathymetry over the analog sidescan sonar image.
Karpov 111
Figure 36b. Differential GPS positions indicating presence of the fishes in Figure 36a on ROV dive transects
in the northern portion of PGER. Inside bars represent modified primary substrate types as determined from
ROV videotape. Outside bars represent relief categories.
Karpov 112
Figure 36c. Differential GPS positions indicating presence of the fishes in Figure 36a on ROV dive
transects in the southern portion of PGER. Inside bars represent modified primary substrate types as
determined from ROV videotape. Outside bars represent relief categories.
Karpov 113
Figure 37a. Differential GPS positions indicating presence of the macroinvertebrates, Parastichopus
californicus, and Strongylocentrotus franciscanus at PGER. Positions are superimposed on ROV dive
transects along with bathymetry over the analog sidescan sonar image.
Karpov 114
Figure 37b. Differential GPS positions indicating presence of the fishes in Figure 37a on ROV dive
transects in the northern portion of PGER. Inside bars represent modified primary substrate types as
determined from ROV videotape. Outside bars represent relief categories.
Karpov 115
Figure 37c. Differential GPS positions indicating presence of the fishes in Figure 37a on ROV dive
transects in the southern portion of PGER. Inside bars represent modified primary substrate types as
determined from ROV videotape. Outside bars represent relief categories.
Karpov 116
02468
1012141618
100
- 149
150
- 199
200
- 249
250
- 299
300
- 345
350
- 399
400
- 449
Size (mm)
Num
ber
Obse
rved
PGER
PCMR
Figure 38. Comparison of size distribution of the California sea cucumber,
Parastichopus californicus, from PGER and PCMR. Bars represent frequency
in each length category. A total of 51 cucumbers were measured from five
transects at PGER and a total of 30 cucumbers were measured from one
transect at PCMR.
Karpov 117
Figure 39. California sea cucumber, Parastichopus californicus, from ROV digital
videotape. The cucumbers were found over “RockSand1” habitat (Rock habitat
with <33% sand as secondary substrate) with medium relief (1–3 m) at a depth of
36.3 m (October 3, 1999).
Karpov 118
Figure 40. Rock with evidence of sand scour at its base. Nearly the lower half
of the rock has been scoured by sand (October 3, 1999).
Karpov 119
Figure 41. (a) The sand impacted aggregated nipple sponge, Polymastia pachymastia,
at a depth of 35.3 m (October 3, 1999). (b) Close up of P. pachymastia.
Karpov 120
Figure 42. The brown alga, Laminaria dentigera, with holdfast covered by shifting sand
at a depth of 20.6 m (October 6, 1999).
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