• [2013-07-22] Tropical ecosystems regulate variations in Earth's carbon dioxide levels
  + http://www.sciencedaily.com/releases/2013/07/130723103501.htm + http://www.csiro.au/Portals/Media/Tropical-ecosystems-regulate-variations-in-Earths-carbon-dioxide-levels.aspx + http://www.pnas.org/content/110/32/13061 + http://www.csiro.au/en/Portals/Media/Tropical-ecosystems-regulate-variations-in-Earths-carbon-dioxide-levels.aspx + http://www.nasa.gov/press/2013/july/tropical-ecosystems-boost-carbon-dioxide-as-temperature-rises/ + http://www.nasa.gov/content/tropical-ecosystems-boost-carbon-dioxide-as-temperatures-rise/ + http://ecosmagazine.com/paper/EC13172.htm
  in Tietoukka Monitor > 2013 > 2013-30 with atmospheric_carbon_dioxide land-surface_air_temperatures photosynthesis respiration tropics

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