Increasing ocean absorption of carbon dioxide (carbon sequestration) and screening out some sunlight were evaluated. Carbon uptake is also known as carbon sequestration. This opens up the possibility of carbon dioxide sequestration in the mantle. However, deforestation disrupts the processes of carbon sequestration and affects localized climates. Another danger related to carbon sequestration is induced seismicity. The study also suggested potential to improve carbon sequestration. Another proposed form of carbon sequestration in the ocean is direct injection. Seaweed farming can be an actor in biological carbon sequestration. These organisms "aid in carbon sequestration and water filtration". Emerging management practices include managing forestlands for biodiversity, carbon sequestration and air quality. Researchers have suggested a number of approaches to improving carbon sequestration relevant to concrete production. Ice cores from Greenland record a pulse of starkly reduced levels of organic carbon sequestration. Deforestation can release significant amounts of CO absent sequestration via active follow-up forestry programs. Brazilian ethanol is produced from sugar cane and noted for high carbon sequestration. This process is known as 'carbon sequestration by mineral carbonation' or mineral sequestration.