Diver-portable respirometer for non-destructive and non-invasive measurements of coral metabolic rates in situ.

Features

• Diver-portable respirometer

• Measures O2 and pH changes in a flow through system

• Water flow rate and light levels set by the user

• Automatic calculations of photosynthesis and respiration

• Uses Android App and submersible tablet

  
  

Components

• Electronics components are contained in a pressure resistant acrylic Electronics Housing (80 m depth) connected by waterproof cables to the incubation flow-sensor “head”.

• An Incubation Head housing the sensors, pump, LED light source is attached by the user to the coral/substrate surface with special retractors.

• CISME is operated with a proprietary Android app on a Submersible Android Tablet connected to the CISME by a WiFi cable.

• Recirculating incubation volumes are produced by a closed cell foam seal that traps seawater within CISME against low relief surfaces: corals, reef substrates such as turf and coralline algae, settlement plates.

• Non-destructive sampling for massive corals with low rugosity surfaces. Branching corals require sampling.