Fish Lose Fear of Predators with Elevated CO2
A study by the Australian Institute of Marine Science (Aims), James Cook University and the Georgia Institute of Technology found the behavior of fish would be “seriously affected” by greater exposure to COÂ 2.
Researchers studied the behavior of coral-reef fish at naturally occurring COÂ 2Â vents in Milne Bay, in eastern Papua New Guinea.Â Fish found living near the vents, where bubbles of COÂ 2Â seeped into the water, were attracted to predator odor and exhibited bolder behavior than fish from control reefs, the study said.
More than 90 per cent of the excess COÂ 2Â in the atmosphere is soaked up by the oceans. When COÂ 2Â is dissolved in water, it causes ocean acidification, which changes its chemistry.Â The Aims study found the diversity of fish at the COÂ 2Â vents was not influenced, but that fish nerve-stimulation mechanisms were altered.
While fish at the vents faced fewer predators than usual, the consequences for fish in the wider ocean could be significant as more COÂ 2Â was dissolved in the water, the study said.
Photo: Gareth Williams Flickr photostream
Stay Up-to-Date On Environmental Management, Energy & Sustainability News with EL's Free Daily Newsletter
Energy Manager News
- Con Edison Development Procures GE Energy Storage System
- Courthouse Replaces Oversized Boiler
- Indoor Farming Company Works on HVAC with PUE 1.0
- Toolkits Designed to Help Health Care Facilities Reduce Energy
- San Antonio Macyâ€™s Store Showcases Better Buildings Challenge Measures
- Natural Gas Gensets to Reach 27 GW of Installed Capacity by 2024
- Larson Releases a Solar Powered Generator with Manual Crank Mast
- Energy Efficiency in Food Service Businesses