File:Dwindling diatoms and the mixed layer.ogv

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Original file (Ogg multiplexed audio/video file, Theora/Vorbis, length 1 min 55 s, 960 × 540 pixels, 1.32 Mbps overall, file size: 18.04 MB)

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English: Dwindling diatoms and the mixed layer
Earth's oceans teem with microscopic plants called phytoplankton. But according to a 2015 NASA study, populations of diatoms, the largest type of phytoplankton algae, have declined more than 1 percent per year from 1998 to 2012. Phytoplankton are an essential base of the marine food web and absorb carbon dioxide dissolved in the ocean that originally came from the atmosphere. The tiny organisms occupy the uppermost layer of ocean water, called the mixed layer, where waves and currents continually churn, drawing up nutrients from a deeper layer of water below. Scientists say the phytoplankton declines observed over the 15-year study period are due to the mixed layer becoming shallower, which results in fewer nutrients reaching the diatoms. The reduction in population may reduce the amount of carbon dioxide drawn out of the atmosphere and transferred to the deep ocean for long-term storage.
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Source NASA Visualization Explorer
Author NASA
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Public domain This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
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current09:57, 27 October 20201 min 55 s, 960 × 540 (18.04 MB)Epipelagic (talk | contribs)Uploaded a work by NASA from [https://svs.gsfc.nasa.gov/11934 NASA Visualization Explorer] with UploadWizard

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