Science for the Planet: Sinking Seaweed for Sequestration
Organic oceanographer Ajit Subramaniam explains how sargassum seaweed would possibly assist scale back carbon dioxide ranges in our environment to counteract local weather change. He’s finding out the practicality and impacts of sinking huge quantities of the surface-growing plant all the way down to the seafloor, which might lure it—and the carbon it absorbs by way of photosynthesis—for at the least a century.
“The thought is that when you gather the sargassum offshore the place ocean depths are about 2,000 meters and also you sink it to the seafloor shortly, you then can be taking out the carbon dioxide that was fastened—and that’s making up this biomass—and principally put it out of contact with the environment for at the least 100 years,” says Subramaniam.
Researchers assume local weather change has helped gas huge sargassum blooms, which have been piling up and rotting on the shores of fashionable vacationer seashores within the Caribbean—an all-too-visible instance of how communities who’ve contributed the least to the local weather disaster are essentially the most impacted by it.
“When the sargassum washes up on the seashores, it emits hydrogen sulfide, which is doubtlessly injurious to human well being, however extra importantly, it fully drives away the tourism that many of those communities rely upon,” says Subramaniam.
That is the second video of Science for the Planet, a brief explainer sequence about how Columbia Local weather College scientists and students try to grasp the results of local weather change and assist remedy the disaster.