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Deep-Sea Respiration Expedition 2018

Deep-Sea Respiration Expedition 2018

The Midwater Respirometry System (MRS) is loaded with samples and attached to a mooring at 2,800 meters for 48 hours.

MBARI Expedition #446

Expedition goal: The principal goal of this expedition is to measure oxygen consumption rates of select deep-sea animals using a custom-designed tool, the Midwater Respirometry System (MRS). Weather permitting we will deploy the instrument at both shallow  (approximately 300 meters) and deep (approximately 3,000 meters) depths. We will also be observing and collecting midwater animals to investigate their ecology, physiology, and behavior in conjunction with onboard collaborators from the Smithsonian National Museum of Natural History, Stanford University, and the Monterey Bay Aquarium.

Expedition dates: August 8- 16, 2018

Ship: R/V Western Flyer

Research technology:  ROV Doc Ricketts, Midwater Respirometer System

Expedition chief scientist: Bruce Robison

Measuring changes in environmental parameters (i.e., oxygen, temperature) and predicting the ecological consequences has been one of the long-term objectives of MBARI’s Midwater Ecology Group, led by Bruce Robison. Beginning in 1996, the team has used ROVs and AUVs to make quantitative measurements of the abundance and vertical distribution patterns of the animals that occupy the upper kilometer of the water column over Monterey Canyon. A significant result of these studies has been the documentation of a 60-to 80-meter vertical expansion of the oxygen minimum zone related to ocean warming that has resulted in a fragmentation of the resident midwater community.

About Deep-Sea Respiration Expedition 2018

August 8-16, 2018 – The Midwater Ecology Group is measuring oxygen consumption rates of select deep-sea animals using a custom-designed tool, the Midwater Respirometry System (MRS).