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CO 2 sequestration in the ocean. Ocean fertilization or ocean nourishment is a type of technology for carbon dioxide removal from the ocean based on the purposeful introduction of plant nutrients to the upper ocean to increase marine food production and to remove carbon dioxide from the atmosphere.
Ocean iron fertilization is an example of a geoengineering technique that involves intentional introduction of iron-rich deposits into oceans, and is aimed to enhance biological productivity of organisms in ocean waters in order to increase carbon dioxide (CO 2) uptake from the atmosphere, possibly resulting in mitigating its global warming effects.
To enhance carbon sequestration processes in oceans the following chemical or physical technologies have been proposed: ocean fertilization, artificial upwelling, basalt storage, mineralization and deep-sea sediments, and adding bases to neutralize acids. [5]
Stimulating phytoplankton blooms is thought to increase sedimentation of particulate organic carbon after the blooms die off, leading to increased carbon sequestration. Since past iron fertilization experiments have resulted in large phytoplankton blooms, some have suggested that large-scale ocean fertilization experiments should be conducted ...
The fecal pellets of zooplankton can be important vehicles for the transfer of particulate organic carbon (POC) to the deep ocean, often making large contributions to the carbon sequestration. The size distribution of the copepod community indicates high numbers of small fecal pellets are produced in the epipelagic. However, small fecal pellets ...
Seagrass restoration projects often involve divers planting seeds or shoots on the ocean floor. This process can slow and low-yielding, Oakes says. It can also be risky for divers working on the ...
These include ocean fertilization, the purposeful introduction of plant nutrients to the upper ocean. [43] [44] While one of the more well-researched carbon dioxide removal approaches, ocean fertilization would only sequester carbon on a timescale of 10-100 years. While surface ocean acidity may decrease as a result of nutrient fertilization ...
A cyclonic eddy centered on 48 deg S, 16 deg E was selected for fertilization. The experiment began on India's Republic Day (26 January 2009). 10 tonnes (9.8 long tons; 11 short tons) of ferrous sulfate dissolved in seawater was spread over an area of 300 square kilometres (120 sq mi), and the patch created was monitored for 38 days to investigate the effects of iron addition on marine ...