Modification of Respirations for Ocean Acidification Studies
MBARI’s benthic and midwater respirometers, which have been used successfully to measure community oxygen consumption in passive mode, will be modified to allow perturbation experiments under controlled levels of CO2 enrichment. The number of chambers will be increased to allow for an adequate number of controls for the experiment, and gas impermeable materials will be substituted to prevent contamination. The new design will reduce the cost of ship time to get the same amount of information. By the end of 2009, field tests for the new designs will be underway.