2019-07-23

[public] 506K views, 18.3K likes, dislikes audio only

MinuteEarth

Thanks to the St. Croix Watershed Research Station for sponsoring this video! To learn more about their work, visit https://www.smm.org/scwrs/.

Aquatic cyanobacteria first oxygenated earth’s air, making human life possible; now, due to our actions, cyanobacteria are madly blooming once more, poisoning our coasts in the process

Thanks also to our Patreon patrons https://www.patreon.com/MinuteEarth and our YouTube members.

___________________________________________

To learn more, start your googling with these keywords:

Cyanobacteria: aquatic photosynthesizing bacteria often erroneously call blue-green algae

Blue-green algae: incorrect name often used for cyanobacteria because they are blue-green in appearance and can be confused with algae

Dead zone: coastal area where cyanobacteria blooms lead to anaerobic conditions, killing fish and other organisms

Mycrosystins: a class of toxic compounds released by certain cyanobacteria

___________________________________________

Subscribe to MinuteEarth on YouTube: http://goo.gl/EpIDGd

Support us on Patreon: https://goo.gl/ZVgLQZ

And visit our website: https://www.minuteearth.com/

Say hello on Facebook: http://goo.gl/FpAvo6

And Twitter: http://goo.gl/Y1aWVC

And download our videos on itunes: https://goo.gl/sfwS6n

___________________________________________

Credits (and Twitter handles):

Script Writer: Peter Reich

Script Editor: David Goldenberg (@dgoldenberg)

Video Illustrator: Sarah Berman (@sarahjberman)

Video Director: David Goldenberg (@dgoldenberg)

Video Narrator: Julián Gómez (@thejuliangomez)

With Contributions From: Henry Reich, Alex Reich, Kate Yoshida, Ever Salazar, Julián Gómez, Arcadi Garcia Rius

Music by: Nathaniel Schroeder: http://www.soundcloud.com/drschroeder

___________________________________________

References:

Bargu S et al. Mississippi River diversions and phytoplankton dynamics in deltaic Gulf of Mexico estuaries: A review. Estuarine, Coastal and Shelf Science 221:39-52 (2019).

Berman-Frank I, Lundgren P, Falkowski P. Nitrogen fixation and photosynthetic oxygen evolution in cyanobacteria. Research in Microbiology 154, 157–164 (2003)

Carey CC et al. Eco-physiological adaptations that favour freshwater cyanobacteria in a changing climate. Water Research 46, 1394-1407 (2012)

Garcia AK et al. Reconstructed ancestral enzymes suggest long-term cooling of Earth’s photic zone since the Archean. Proc Natl Acad Sci 114:4619-4624 (2017)

Glass JB, Wolfe-Simon F, Anbar AD. Coevolution of metal availability and nitrogen assimilation in cyanobacteria and algae. Geobiology 7, 100-123 (2009).

Lyons TW, CT Reinhard, NJ Planavsky. The rise of oxygen in Earth’s early ocean and atmosphere Nature 506, 307–315 (2014).

Planavsky NJ et al. The evolution of the marine phosphate reservoir. Nature 467, 1088-1090 (2010)

Soo RM et al. On the origins of oxygenic photosynthesis and aerobic respiration in Cyanobacteria. Science 355, 1436–1440 (2017)

Tromas N et al. Characterising and predicting cyanobacterial blooms in an 8-year amplicon sequencing time course. ISME J 11:1746-1763 (2017)