APPENDIX X

Gametogenic Ecology of a Hydrothermal Vent Community

• Spatial analysis of reproductive activity within field--tests whether reproduction vent species is continuous.
• If not continuous -- test whether synchrony is controlled by tidal cycles
• Second set of samples collected 1 month later permits a time-series approach.

Sea Cliff/ATV Operations

Highlights

• ATV Sampling of biota
• ATV Sampling of black smokers
• ATV temperature measurements
• ATV small package deployment and recovery
• Sea Beam survey on arrival
• 24 hour operations maximize bottom time
• Launch and recovery in sea state 4
• Professional, competent, courteous crew
• (~24 members of combined Sea Cliff and ATV crew)